170 Sentences With "produce eggs" | Random Sentence Generator

They produce eggs the size of grapefruits, which then hatch internally.

These lizards simply always produce eggs with two full sets of chromosomes.

Females produce eggs and bear young; males produce sperm and impregnate the females.

We buy lots of fresh produce, eggs for my husband's breakfasts, dairy, and snacks.

By comparison, women are spontaneous ovulators who produce eggs monthly, independent of sexual intercourse.

A woman may not produce eggs every month, or her eggs may not be healthy.

Local breeds can thrive and produce eggs with minimal care and irregular feeding, he said.

Billions of male chicks are killed each year because they are not used to produce eggs or meat.

This means that, in addition to the male's ejaculate, his body tissue is being used to produce eggs.

With IVF, a woman's ovaries are stimulated to produce eggs using medication, and then they're removed from her ovaries.

Residents lined the streets and vendors sold produce, eggs and meat in areas where clashes raged just a few weeks earlier.

The scientists carried out experiments on female Aedes aegypti mosquitoes, which require human blood for the proteins they need to produce eggs.

For an exceptional brunch in downtown Boone, stop by Melanie's Food Fantasy, where the menu features produce, eggs and meat from local farms.

There are two stovetop cooking methods that allow preheating for a hot start, and produce eggs that are equally easy to peel: boiling and steaming.

Some are paralyzed, some have damage to reproductive organs, and some have brain injuries that disrupt the secretion of hormones needed to produce eggs or sperm.

The average male ejaculation contains hundreds of millions of sperm, but human females can produce eggs in the low teens at most in the extraction process.

They have successfully genetically modified hens to produce eggs containing large amounts of interferon beta protein, a protein used to treat various illnesses, including multiple sclerosis and cancer.

Though it's early days here and we're just talking mice for now, theoretically, the technique could help older women who no longer produce eggs to have their own, biological offspring.

" In a statement, USDA said the kittens were used in the research because they were "the only hosts in which (the parasite) can complete its life cycle and produce (eggs).

After the beluga are born, it takes five years to determine their gender and around 10 years for the fish to produce eggs that are ready to be harvested for caviar.

When we can get cheap egg-like protein from plants, we can stop engineering chickens to produce eggs at an unsustainable, life-threatening rate — without interfering with anyone's enjoyment of a delicious food.

"... In our research laboratory, we are committed to responsibly [developing] the next generation of reproductive therapies that will allow our patients to use their tissues to produce eggs or sperm and have biological children," Orwig tells Axios.

Egg-laying chickens are packed by the tens of thousands into small barns where they often don't have enough space to spread their wings, and experience horrific health problems thanks to the rate at which they produce eggs.

Other advances: Loring, who collaborates with the San Diego Zoo, says her research team already has developed the stem cells for the northern white rhino and is in the process of developing artificial gametes to produce eggs and sperm.

Egg-laying chickens are packed by the tens of thousands into small barns where they often don't have enough space to spread their wings, and they experience horrific health problems thanks to the rate at which they produce eggs.

Too skinny and they are unlikely to produce eggs; too chubby and they will have mostly male chicks -- an evolutionary adaptation that benefited the species when the birds were plentiful but is not the best strategy to increase numbers quickly.

The highly automated plant, owned by a joint venture between China's Huayu Agricultural Science and Technology Co Ltd and EW Group's genetics business Hy-Line International, is the world's biggest hatchery of layer chicks, or birds raised to produce eggs rather than meat.

When we hear about some of these conditions — like the fact that chickens are forced to produce eggs at such a fast rate that their intestines sometimes partially fall out under the strain — we may want to put a stop to them.

The royal jelly stimulates the development of reproductive organs that a queen bee needs to produce eggs of her own, which then turn into more worker bees who dedicate their lives to providing delicious honey to the hive—and, incidentally, to hungry humans, too.

However, females with this mutation produce eggs that undergo normal development when fertilized.

Females from both habitats, however, were still able to produce eggs when given blood meals.

After about eight weeks, they begin to produce eggs in the lungs. Some patients develop brain damage if parasites establish in the brain and produce eggs. The brain damage commonly causes headache, vomiting, and seizures. Untreated cerebral paragonimaisis commonly results in death from increased intracranial pressure.

A few poultry farms produce eggs and chickens. Dairy farms supply barely-sufficient milk for local consumption.

Pribilof Island blue king crabs mate and produce eggs in late March to early May. Females generally brood their eggs externally for 12–14 months. Since blue king crabs need more than a year to brood their eggs, they miss a breeding cycle just before the larvae hatch and only produce eggs every other year, although first-time breeders can often produce eggs in subsequent years. Females release larvae around the middle of April in the Pribilof Islands, while those held at warmer temperatures in the laboratory may release larvae as early as February.

Females in high-density conditions produced only half of the eggs produced by females in low-density conditions. Larger females in high-density conditions produce eggs at a faster rate than smaller females. While smaller females in low-density groups produce eggs faster than larger females resulting in an equal reproductive output between small and large females.

Like most species of horse flies, the females of Scaptia lata need to feed on mammalian blood before they can produce eggs.

In: Pineda, M.A., Harnett, W. (eds.), Immune Response to Parasitic Infections (Vol. 2, pp. 175–212), Bentham eBooks, , . All parasitic worms produce eggs during reproduction.

Because many of the nutrients needed to produce eggs are obtained in the adult stage, the larval stage is much shorter and less susceptible to predation.

The larva reaches maturity in the digestive tract of the flamingo (definitive host). Adult parasites produce eggs, which are released in the feces and into the environment.

Males differ from females by having the second antennae markedly enlarged, and modified into clasping organs used in mating. Adult female brine shrimp ovulate approximately every 140 hours. In favourable conditions, the female brine shrimp can produce eggs that almost immediately hatch. While in extreme conditions, such as low oxygen level or salinity above 150‰, female brine shrimp produce eggs with a chorion coating which has a brown colour.

In biliary ducts, flukes mature, feed on blood, and produce eggs. Hypertrophy of biliar ducts associated with obstruction of the lumen occurs as a result of tissue damage.

Females produce eggs and give birth to live young that measure to be . Two genera are known: Squalus, which contains numerous species, and Cirrhigaleus, which has three species.

Aphid populations are often entirely female during the summer, with sexual reproduction only to produce eggs for overwintering. Some species can alternate between sexual and asexual strategies, an ability known as heterogamy, depending on many conditions. Alternation is observed in several rotifer species (cyclical parthenogenesis e.g. in Brachionus species) and a few types of insects, such as aphids which will, under certain conditions, produce eggs that have not gone through meiosis, thus cloning themselves.

When the fish is eaten by a bird, the larvae mature and adults start to produce eggs within two days. Reproduction takes place within one to two weeks, after which the parasite dies.

Neither male nor female ever eat, and live only long enough to mate and produce eggs. Lichen bag moths arrived in New Zealand from Australia in 1981 and have been gradually spreading across the country.

Cows can produce milk, which can be turned into cheese and butter, and chickens produce eggs. Both livestock can reproduce: cows by giving them Miracle Potion (equivalent to artificial insemination), and chickens by hatching their eggs.

Only the queens and males have wings (alate), and these ants are also known as reproductives or swarmers. Although most of the ants in the nest are female, only the queens produce eggs. Queens are usually over 20 mm long.

Along Lobsinger Line, it is common to see signs for produce, eggs, firewood, and "No Sunday Sales" from each of the laneways. Lobsinger Line ends at the T-intersection of Lobsinger and Waterloo Regional Road 5, in the hamlet of Crosshill, Ontario.

Smaller crustaceans, produce eggs with hard resistant covering capable of surviving even a severe drought. These cysts are blown by wind and the species is dispersed. Freshwater crabs and prawns carry their eggs until they hatch out, while leeches carry the young in a pouch.

Dioicous gametophytes of the liverwort Marchantia polymorpha. In this species, gametes are produced on different plants on umbrella-shaped gametophores with different morphologies. The radiating arms of female gametophores (left) protect archegonia that produce eggs. Male gametophores (right) are topped with antheridia that produce sperm.

After copulation, sperm are stored in a spermathecae and the females can use this for several ovulations. Macropodia Rostrata produce eggs around the size of 0.6mm, and several factors influence how many they can produce. Macropodia Rostrata are continuous breeders, and do not have mating seasons.

Vol 4 No 3 Pg 380 The females of the species do not require a blood meal to produce eggs, although they will bite if starved of nectar or in order to produce a second brood. They are thought to be capable of transmitting St. Louis encephalitis.

Adult Dioctophyme renale inhabit the kidney (typically the right kidney). Females produce eggs which are passed in urine. In aquatic environments, eggs embryonate after 15–100 days. These eggs are ingested by an aquatic oligochaete, hatch, penetrate blood vessels, and develop into a stage three larvae.

Electrona have a low fecundity. Females produce eggs the size of 0.7-0.9 mm. Spawning of some species may occur any time during the year. In the Arabian Sea, fish spawn during all seasons but significantly increases during monsoon transition periods (March–June and September–November).

The Dactylogyrus life cycle is direct, having no intermediate host. The hermaphroditic adults are oviparous and produce eggs into the water which hatch prior to attaching to the gills of a fish host and developing into an onchomiricidium.Moeller Jr., Robert B. "Miscellaneous Parasites of Fish." Cichlid-Forum.com.

The adults then mate and produce eggs. The eggs move to the alveolar capillaries via the circulation and hatch to L1 larvae. The L1 larvae burrow though the alveolar and are then coughed up and swallowed. L1 larvae are therefore passed in the faeces of infected cannids.

If the queen is successful, the workers continue to serve their role and tend to the brood and do not lay eggs. Despite behavioral castes, all females are morphologically similar. Therefore, any female can produce eggs and has the potential to become a queen, regardless of caste level.

Cyrtosomum penneri are roundworms of the family Atractidae that are found in the intestines or lungs of various vertebrate animals. They do not produce eggs; instead the adults produce larvae that are ready to infect as soon as they leave their mother's womb. C. penneri is found only in Mexico.

While male deer flies collect pollen, female deer flies feed on blood, which they require to produce eggs. Females feed primarily on mammals. They are attracted to prey by sight, smell, or the detection of carbon dioxide. Other attractants are body heat, movement, dark colours, and lights in the night.

Very little is known about the early life of Pacific sleeper sharks. They are believed to produce eggs that hatch inside the female's body (reproduction is ovoviviparous), but gestation time is unknown and litter sizes are thought to be about 10 pups. Its length at birth is about or less.

Eggs follow 3–5 days later. The female will spend hours inside her nesting box before eggs are laid. Once the first egg is laid, a new egg will follow every other day until the clutch is complete, typically at four to six eggs. Even without a nest or a male, lovebirds sometimes produce eggs.

Arctic cisco are able to spawn at 8 or 9 years of age. Females may only be able to spawn two or three times in their life, and do not necessarily produce eggs every year. The Arctic cisco reproduce in September. They do not reproduce in Alaskan waters, but do reproduce in Mackenzie River.

11 Oct. 2014. Polistes fuscatus use oophagy as a method to establish a dominance hierarchy; dominant females will eat the eggs of subordinate females such that they no longer produce eggs, possibly due to the unnecessary expending of energy and resources.West-Eberhard, M. J. 1969 The social biology of polistine wasps. Mis . Publ.Zool. Univ.

Panicle rice mites are parthenogenetic (virgin females can produce male offspring). The female will then mate with the male offspring and produce eggs. A mated female produces an average of 55 eggs in her lifetime. The lifecycle in the laboratory can vary from 3 days at 86 °F to 20 days at 68 °F.

The food consists of insects, worms, and other small invertebrates. The blue-throated keeled lizard likes to climb. It is easily frightened and is not often kept in captivity due to its protected status. Only two or four eggs are laid, and it has been assumed that females can produce eggs both in early spring and early autumn.

The brain, in species that have one, encircles the esophagus. Most molluscs have eyes, and all have sensors to detect chemicals, vibrations, and touch. The simplest type of molluscan reproductive system relies on external fertilization, but more complex variations occur. Nearly all produce eggs, from which may emerge trochophore larvae, more complex veliger larvae, or miniature adults.

An important innovation from the book is his experiments in chemotherapy in which he employed the "control"', the basis of experimental design in modern biological research. He described some 180 species of parasites. Perhaps, his most significant observation was that parasites produce eggs and develop from them, which contradicted the prevailing opinion that they are produced spontaneously.

WWF Malaysia, December 2001. p. 197 Agricultural activity began in Fraser's Hill in 1976 when the Fraser's Hill Development Corporation, in partnership with FIMA corporation, established a vegetable and poultry farm covering to produce eggs, chickens and vegetables. Crops grown on the vegetable farm include: cabbages, capsicum, carrots, French beans, green peas, lettuce, mandarin oranges, onions, strawberries and tomatoes.

Fishkill Farms' 130 acre property offers U-pick services for produce including blueberries, blackberries, cherries, peaches, nectarines, pears and vegetables. Pasture- raised hens also produce eggs for the farm. It also sells produce in Brooklyn farmers markets and an order-fulfillment service called Good Eggs. The farm offers community-supported agriculture shares for Hudson Valley residents.

The rooster's tail has some longer sword shaped feathers and it is held straight (horizontal with the body). The roosters weigh 2–3.25 kg and the hens from 1.5–2 kg. The hens are nonsitters, and produce 160 white eggs per year of 55–60 g weight. A chicken starts to produce eggs when eight months old.

They are then coughed up and swallowed into the gut, where they parasitise the intestinal mucosa of the duodenum and jejunum. In the small intestine, they molt twice and become adult female worms. The females live threaded in the epithelium of the small intestine and, by parthenogenesis, produce eggs, which yield rhabditiform larvae. Only females will reach reproductive adulthood in the intestine.

From there, they migrate to the lungs, where they emerge from blood vessels into the alveoli. They spend between 14 and 17 days migrating through the liver and lungs. At this point, they are coughed up and re-swallowed, where the larvae mature into adult roundworms that produce eggs. The worms take from 79 to 110 days to reach adulthood.

Eurycantha calcarata typically reproduce through sexual reproduction and produce eggs that hatch 4.5-6.5 months later. When no males are present in the population, this stick insect exhibits parthenogenesis instead. Eggs are typically 8.2 mm and 4 mm wide, with a somewhat cylindrical shape. Egg color can vary from shades of brown to grey and surface texture is rough and shiny.

Inexplicably, all the skeletons appear to have ruptured rib cages. Meanwhile, three Predators – Scar, Celtic and Chopper – arrive and kill the remaining team members on the surface. They make their way down to the pyramid and arrive just as the team unwittingly activates the structure and are trapped within it. The Alien Queen awakes from cryogenic stasis and begins to produce eggs.

They can live without food for several months, but females must have a blood meal before they can produce eggs. They can deliver about 4000 eggs on the host's fur. The eggs go through four lifecycle stages: embryo, larva, pupa, and imago (adult). This whole life cycle from egg to adult takes from two to three weeks, although this depends on the temperature.

Once the parasite has entered the body and begun to produce eggs, it uses the hosts' immune system (granulomas) for transportation of eggs into the gut. The eggs stimulate formation of granuloma around them. The granulomas, consisting of motile cells, carry the eggs to the intestinal lumen. When in the lumen, granuloma cells disperse leaving the eggs to be excreted within feces.

The calves are dairy calves which at the right age will begin producing milk to be processed and distributed. The chicks at the correct age will produce eggs to be processed and distributed. These cams are operated and maintained by Animal Planet L!VE. The Cicada Cam shows a terrarium full of cicadas which climb over a model of the United States Capitol.

Medaka live in small ponds, shallow rivers, and rice fields. They can survive in a wide range of water temperatures (), but they prefer a water temperature of . Since they eat juvenile mosquitoes and small plankton, they are known as a beneficial organism for humans. They produce 10-20 eggs per birth, and they can produce eggs every day in laboratory conditions.

The life cycle of Nacobbus begins when they hatch from eggs in the soil and migrate through roots and soil until mature, causing necrotic lesions. Then, mature females form a feeding site called a syncytium, which is composed of plant material and formed in healthy root tissue. There the females produce eggs and lay them in the soil to hatch.

The simplest molluscan reproductive system relies on external fertilization, but with more complex variations. All produce eggs, from which may emerge trochophore larvae, more complex veliger larvae, or miniature adults. Two gonads sit next to the coelom, a small cavity that surrounds the heart, into which they shed ova or sperm. The nephridia extract the gametes from the coelom and emit them into the mantle cavity.

Desert box turtles usually prefer wet springs where egg production is higher compared to dry springs where a smaller proportion of females produce eggs. Spring rains may increase the proportion of females laying eggs in the summer and in years with dry springs, turtles may defer laying eggs completely rather than reducing annual out.Nieuwolt-Dacanay, Pimmy M. (1997). Reproduction the Western Box Turtle, Terrapene ornata luteola.

Mate quality, not aggressive spillover, explains sexual cannibalism in a size-dimorphic spider. Behavioral Ecology and Sociobiology 66, 145-151 (2011). In H. helluo, females have a higher protein diet when cannibalizing males than when consuming only house crickets. Further studies show that Argiope keyserlingi females with high-protein/low-lipid diets resulting from sexual cannibalism may produce eggs of greater egg energy density (yolk investment).

This is because even though they have visible outer structures of the opposite sex, their inner structures are consistent to their sex. More important, the males produce sperm and the females produce eggs. Females have a penis-like structure, called the gynosome that has a tube leading into their body to where their genitalia are located. Neotrogla males have a structure resembling that of a vagina.

Both species produce eggs that are brown and pitted. T. canis eggs measure 75-90 µm and are spherical in shape, whereas the eggs of T. cati are 65-70 µm in diameter and oblong. Second stage larvae hatch from these eggs and are approximately 0.5mm long and 0.02mm wide. Adults of both species have complete digestive systems and three lips, each composed of a dentigerous ridge.

Both supply the dining hall with organic produce, eggs, and meat. The off-shore island properties include the Alice Eno Field Research Station on Great Duck Island where students conduct studies on Leach's storm petrels, guillemots, gulls, sparrows and other fields of natural history. The Edward McCormick Blair Research station on Mount Desert Rock is a center for the study of marine mammals and oceanographic issues.

The species Syritta pipiens is within the family of Syrphidae, commonly called hover or flower flies. Syrphidae is one of the largest families within the Diptera order and contains about 6,000 known species widely distributed around the world. They are distinctive flies that are often found on flowers, where the adult males primarily feed on nectar and adult females eat protein-rich pollen to produce eggs.

When the larvae are licked and swallowed by the horse during grooming they travel to the stomach and embed themselves into the glandular part of the stomach close to the margo plicatus. A thick mucus is excreted by the stomach lining. The larvae mature into adults and females produce eggs to complete the life cycle. Larvae that invade skin or eye tissue do not develop into adults.

The overall diet of this mosquito includes mammals, birds, reptiles, and amphibians. Main hosts for this mosquito are the eastern chipmunk (Tamias striatus), the gray squirrel (Sciurus carolinensis), and the fox squirrel (Sciurus niger). Only female mosquitoes take a blood meal to produce eggs, and they are typically aggressive human biters. Mosquitoes feed mainly at dusk and dawn, but they will bite during the day in wooded areas.

The game introduces his signature abilities to flutter jump and produce eggs from swallowed enemies. The game is well known for its unique artstyle, which heavily contrasted with the pre- rendered artstyle of contemporary games popularized by Donkey Kong Country. After four years of development, Yoshi's Island released in Japan in August 1995, and worldwide two months later. Some of its special effects were powered by a new Super FX2 microchip.

Rhabdias bufonis has a heterogonic lifestyle in which a generation of parasitic individuals is succeeded by a free-living generation. This is advantageous to the parasite as it allows reproduction for one or more generations in the absence of the host. The free-living male and female worms mate and produce eggs which hatch inside the mother. They feed on her internal organs and moult twice before they leave her body.

Cadmus is a genus of leaf beetles which are commonly called case bearing leaf beetles in the subfamily Chrysomelinae. They are widespread throughout Australia and include 5 subgenera and 68 species. Case bearing leaf beetles produce eggs encased in faecal material and larvae when hatched feed on leaf litter while housed in this protective home. The adults feed on Eucalyptus including Eucalyptus globulus but rarely become a major problem for forestry.

The eggs will hatch about four days after being laid, but it takes about four weeks for the first workers to become adults. The colony will continue to grow during the summer, and the queen will continue to produce eggs, rarely leaving the nest. The workers will supply her with nectar, maintain the colony, and help her produce a group of male offspring. New queens are produced shortly thereafter.

Peripatoides is a genus of velvet worms in the Peripatopsidae family. These animals are nocturnal hunters that spit glue to trap their prey. In New Zealand species of Peripatoides have 14, 15 or 16 pairs of legs. Female Peripatoides produce eggs that are fertilized internally and babies develop inside their mother until large enough to be born, in batches of 4-6, as colourless miniatures of the parents.

The Western pygmy perch is found predominantly in lakes, streams, and swamps, and can withstand a degree of brackishness. They have a preference for living among vegetation in the shallows around the water perimeter, and acclimatise readily to a range of water temperatures from almost 0 to 25 °C. Pygmy perch are egg layers. They produce eggs singly, laying 12 to 15 over a period of up to three hours.

Diagram of oogenesis in a digenean (Platyhelminthes) Some algae and the oomycetes produce eggs in oogonia. In the brown alga Fucus, all four egg cells survive oogenesis, which is an exception to the rule that generally only one product of female meiosis survives to maturity. In plants, oogenesis occurs inside the female gametophyte via mitosis. In many plants such as bryophytes, ferns, and gymnosperms, egg cells are formed in archegonia.

Yoshi runs and jumps to reach the end of the level while solving puzzles and collecting items. In a style new to the series, the game has a hand-drawn aesthetic. The game introduces his signature abilities to flutter jump and produce eggs from swallowed enemies. The game is well known for its unique artstyle, which heavily contrasted with the pre- rendered artstyle of contemporary games popularized by Donkey Kong Country.

The Totleger derives from the traditional rural chickens of Westphalia, and was reared mainly in the area of the cities of Bielefeld and Herford. It is closely related to the Ostfriesische Möwe and to the Braekel. Although the German word means "dead" and means "(egg-)layer", the real meaning is another. Due to the considerable ability to produce eggs, the breed was called "Alltagsleger" ("every-day layer") or "Dauerleger".

A pair of individuals move close to each other while facing in opposite directions, and transfer sperm to each other. Each is then able to produce eggs. There is no larval stage and the embryos undergo direct development into juveniles. This species exudes a milky-white substance containing terpenes from its dorsal gland; this is derived from toxic substances in the sponge it feeds on and acts to deter predators.

Also when the player marries as the girl, the game ends, but as a boy, the game continues. The player is given a pet in the beginning of the game, and may choose from a dog, a cat, a pig, or a bird. Livestock include cows, chickens, and sheep, and the player can have up to eight of each. Cows produce milk, chickens produce eggs, and sheep produce wool.

Pulvinaria regalis is a species of scale insect in the family Coccidae. Although it is commonly known as the horse chestnut scale, it affects other trees besides horse chestnuts as well as many species of woody shrubs. Adults are normally all female and produce eggs by parthenogenesis. The insects are thought to have originated in Asia but arrived in Europe in the second half of the twentieth century.

Artist's restoration of the oviraptorid Nemegtomaia brooding on its nest. Many associations between adult oviraptorosaur skeletons or embryos with elongatoolithid eggs (including Macroolithus) demonstrate that Macroolithus and other elongatoolithids were laid by oviraptorosaurs. One oviraptorosaur skeleton from the Upper Cretaceous of China was described in 2005; two shelled elongatoolithid eggs were preserved inside of its pelvis. This suggests that oviraptorosaurs had two functional oviducts where both would produce eggs simultaneously.

Right after reaching maturity, these clams produce eggs, followed by sperm. Throughout adult life, Corbicula is a self-fertile simultaneous hermaphrodite which can broadcast spawn up to 570 mucoid larvae per day per individual, and more than 68,000 per year per individual.McMahon, R.F. (1999) Invasive Characteristics of the Freshwater Bivalve Corbicula fluminea. In R. Claudi & J.H. Leach (Eds.), Nonindigenous Freshwater Organisms: Vectors, Biology, and Impacts (pp. 315-343).

Females have a single functional ovary and two oviducts, ovulating a single egg into each at a time. They can store sperm for at least 15 months. Females produce eggs throughout the year, laying them in pairs approximately once every 20 days from January to June, and once every 30 days the rest of the year. The second egg in a pair is deposited 12-24 hours after the first.

Snail farming is referred to as heliciculture, and includes the process of farming or raising land snails specifically for human consumption. Some commercial snail farms collect and process snail caviar, which is then jarred and marketed to consumers. Sometimes the snails are raised and kept in temperature, lighting and climate controlled conditions to encourage maximal reproduction, which produces the eggs. Since snails are hermaphroditic (having both male and female sexual organs), all can produce eggs.

In this state, the movements of the swimming appendages of the pair beat in a co- ordinated fashion. The females can produce eggs either as a result of mating or via parthenogenesis. There are two types of eggs: thin-shelled eggs that hatch immediately and thick-shelled eggs, which can remain in a dormant state. These cysts can last for a number of years, and will hatch when they are placed in saltwater.

Not much is mentioned regarding the reproduction habits of the Krites, as no information is shown in the films or given in interviews by the creators. They are portrayed with a need to eat before laying eggs, but how they produce eggs in the first place is never revealed. No mating rituals are shown or discussed in the films. In Critters 4, Charlie tells Fran that it takes six months for Krite eggs to incubate.

In Polistes humilis nests, there is an observable hierarchy between reproducing queens and sterile workers. There are no outward physical differences between females; even small females have been known to produce eggs. Since there are no morphological differences between females, behavioral characteristics are the primary determinate of whether a female reproduces or not. These females can be determined by observation as they often receive solid food, honey, and water from worker females returning from foraging.

Rhombozoa, or dicyemid mesozoans, are found in the nephrid tracts of squid and octopuses. They range from a few millimeters long with twenty to thirty cells that include anterior attachment cells and a long central reproductive cell called an axial cell. This axial cell may develop asexually into vermiform juveniles or it may produce eggs and sperm that self-fertilize to produce a ciliated infusiform larva. There are three genera: Dicyema, Pseudicyema and Dicyemennea.

Not all trematodes follow the typical sequence of eggs, miracidia, sporocysts, rediae, cercariae, and adults. In some species, the redial stage is omitted, and sporocysts produce cercariae. In other species, the cercaria develops into an adult within the same host. Many digenean trematodes require two hosts; one (typically a snail) where asexual reproduction occurs in sporocysts, the other a vertebrate (typically a fish) where the adult form engages in sexual reproduction to produce eggs.

Once the larvae find a host, they migrate to the ears and feed for 5–10 days. They then molt and become nymphs, still remaining within the host's ear. The nymphs feed for about a month, after which they crawl out of the ear onto the ground to molt again and become adults. The nymphal stages can remain in the ear for 1–7 months, and adults can produce eggs for up to 6 months.

Ivermectin is routinely used to control parasitic worms in the gastrointestinal tract of ruminant animals. These parasites normally enter the animal when it is grazing, pass the bowel and set and mature in the intestines, after which they produce eggs which leave the animal via its droppings and can infest new pastures. Ivermectin is effective in killing some, but not all, of these parasites. In dogs it is routinely used as prophylaxis against heartworm.

Antipathes dendrochristos growing several hundred meters down in the ocean Little is known about sexual reproduction in these corals. Sexual reproduction occurs after the coral colony is established. A colony will produce eggs and sperm, which meet in the water to create larvae that use currents to disperse and settle in new areas. The larval stage of the coral, called a planula, will drift along until it finds a surface on which it can grow.

Mating for pharaoh ants occurs within the nests with males that are usually not from the colony which ensures genetic diversity. The queen can typically produce eggs in batches of 10 to 12 at once, but can lay up to 400 eggs every time she mates. The eggs that are produced take up to 42 days to mature from an egg to an adult. Each queen within the nest lives between 4 and 12 months.

The tsetse fly (as well as other Glossinidae, Hippoboscidae, Nycteribidae and Streblidae) exhibits adenotrophic viviparity; a single fertilised egg is retained in the oviduct and the developing larva feeds on glandular secretions. When fully grown, the female finds a spot with soft soil and the larva works its way out of the oviduct, buries itself and pupates. Some flies like Lundstroemia parthenogenetica (Chironomidae) reproduce by thelytokous parthenogenesis, and some gall midges have larvae that can produce eggs (paedogenesis).

The life cycle of T. regenti is analogous to that of human schistosomes. Adult flukes mate in a nasal mucosa of anatid birds (e.g. Anas platyrhynchos, Spatula clypeata or Cairina moschata) and produce eggs with miracidia which hatch directly in the host tissue and leak outside when the bird is drinking/feeding. Once in water, the miracidia swim using their cilia and actively search for a proper molluscan intermediate host (Radix lagotis, Radix labiata, Radix peregra).

Some quail are farmed in large numbers. The common and Japanese (or coturnix) quail are both raised for table meat or to produce eggs. They are also readily hunted, often artificially stocked on game farms or to supplement wild populations. Migrating common quail are known to eat some poisonous seeds with no apparent ill effects but store the poison in their body fat, poisoning people who subsequently eat these birds; this condition is known as "coturnism".

Under certain conditions, this enables the insects to lay at least one egg pod before dying. Healthy locusts and grasshoppers, especially females, take some time after fledging to reach maturity and lay eggs, during which time they build up sufficient fat to produce up to three egg pods. However, infected ones usually dispense with this fattening period and go on to produce eggs immediately after fledging. This generally wears them out so much that they die after laying one pod.

Once larvae is fully mature make a hole to come out of the fruit, and it most happen when the fruit is on the ground. Then, the larva makes a hole on the ground to become a pupa. The life cycle begin again when the female emerge and become mature to produce eggs by feeding on sources of carbohydrate and protein. The life cycle (egg to adult) of Anastrepha ludens takes 27 days or longer if the temperature is lower than 30 °C.

Christine de Pizan lecturing to a group of men.At the beginning of the renaissance, women's sole role and social value was held to be reproduction. This gender role defined a woman's main identity and purpose in life. Socrates, a well- known exemplar of the love of wisdom to the Renaissance humanists, said that he tolerated his first wife Xanthippe, because she bore him sons, in the same way one tolerated the noise of geese because they produce eggs and chicks.

Yoshi retains much of his moveset from the Yoshi's Island series of games, including using his tongue to swallow enemies and using his flutter jump to reach high areas. Many elements such as flowers and mystery clouds also return. However, unlike other games where swallowing enemies would produce eggs which Yoshi could then throw, Yoshi instead produces balls of yarn. These yarn balls have various uses when thrown, such as tying up enemies or filling in certain platforms and objects.

A female kakapo will likely be able to produce eggs even when there are few resources, while a male kakapo will be more capable of perpetuating the species when there are plenty, by mating with several females. This supports the Trivers–Willard hypothesis. The relationship between clutch sex ratio and maternal diet has conservation implications, because a captive population maintained on a high quality diet will produce fewer females and therefore fewer individuals valuable to the recovery of the species.

The consequences to the girl with XX gonadal dysgenesis: # Her gonads cannot make estrogen, so her breasts will not develop and her uterus will not grow and menstruate until she is given estrogen. This is often given through the skin now. # Her gonads cannot make progesterone, so her menstrual periods will not be predictable until she is given a progestin, still usually as a pill. # Her gonads cannot produce eggs so she will not be able to conceive children naturally.

Both horse-flies and botflies (Oestridae) are sometimes referred to as gadflies. Adult horse-flies feed on nectar and plant exudates; the males have weak mouthparts and only the females bite animals to obtain enough protein from blood to produce eggs. The mouthparts of females are formed into a stout stabbing organ with two pairs of sharp cutting blades, and a spongelike part used to lap up the blood that flows from the wound. The larvae are predaceous and grow in semiaquatic habitats.

No doubt the female needs the plentiful fat and protein of the victim to produce eggs, much as many blood-sucking female insects need a blood meal before they can lay eggs. An adequately nourished female will parasitise the bagworm with several stings, perhaps dozens. Paralysed hosts remain fresh for months, long enough for the wasp larvae. The bagworm routinely infests the large local wattle plantations, which cover more than half a million acres (2,000 km2) in South Africa, primarily in Natal.

Danielle was also placed on Clomid to help her produce eggs and ovulate regularly. They went through 5 cycles (5 months) of intrauterine insemination on Clomid before discussing in vitro fertilization as an option. Instead of in vitro fertilization, they opted to switch Danielle to Femara and attempted intrauterine insemination again, ultimately becoming pregnant with Blayke. During their second journey of infertility, Adam's testosterone levels, sperm count, and sperm motility were considered normal; thus no infertility treatment was necessary for Adam.

Most tinamou eggs are solid colored, without spots or speckling; however, the eggs of Tinamotis species may exhibit small white speckles. The benefit of laying brightly colored eggs is unknown, but is not detrimental as most tinamou predators hunt at night. Eggs are relatively large compared to the mass of the female, though even the largest birds produce eggs very similar in size to the smallest of species. Their shapes are either spherical or elliptical; the two ends are similar in shape, and difficult to distinguish.

However, to humans it is considerably less harmful than deer flies (Chrysops), which bite much more vigorously. There are no commercially available insect repellents that fully work against this horse-fly, however it usually avoids smoke and exhaust gases. Weather has a great effect on the horse-flies' behavior, as they only fly on sunny and hot weather. Like all horse-fly species, it is only the females that require a blood meal, this is in order to provide sufficient protein to produce eggs.

The lifetime of adult worms varies tremendously from one species to another but is generally in the range of 1 to 8 years (see following table). This lifetime of several years is a result of their ability to manipulate the immune response of their hosts by secreting immunomodulatory products. Helminths can be either hermaphroditic (having the sex organs of both sexes), like tapeworms and flukes (not including the blood fluke), or have their sexes differentiated, like the roundworms. All helminths produce eggs (also called ova) for reproduction.

Other species need a blood meal before they can produce any eggs at all; they are said to practise anautogenous reproduction. As far as is known, all species need a blood meal for every following clutch of eggs. Proteins and other nutrients in the blood they eat enable the female to produce the proteins and fats necessary for them to produce eggs after using up their bodily food stores.Braverman, Y. Nematocera (Ceratopogonidae, Psychodidae, Simuliidae and Culicidae) and control methods Rev. sci. tech. Off. int. Epiz.

This makes them far more accessible to the foraging gulls than uninfected conspecifics, which will often move up when the tide is highest to feed on algae which they cannot otherwise access, but return underwater as soon as the tide recedes to avoid desiccation. Once the snails are eaten by herring gulls, the metacercariae hatch into mature flukes. These mate and produce eggs which are shed with the bird's feces. Their adult lifespan is a mere two weeks; several generations are thus produced each summer.

Young Polyclinum planum colonies appeared every month of the year at intertidal research plots at the southern end of Monterey Bay, California, USA, and these colonies survived on average for about 5.5 months, though the longest lived colony monitored to date lived 24 months. Colonies grow rapidly by a form of cloning described below. Because the growth of colonies of P. planum is indeterminate it becomes impossible to estimate a colony's age by its size after only a few months. Mature colonies produce eggs year round.

The female insect's main reproductive function is to produce eggs, including the egg's protective coating, and to store the male spermatozoa until egg fertilisation is ready. The female reproductive organs include paired ovaries which empty their eggs (oocytes) via the calyces into lateral oviducts, joining to form the common oviduct. The opening (gonopore) of the common oviduct is concealed in a cavity called the genital chamber and this serves as a copulatory pouch (bursa copulatrix) when mating. The external opening to this is the vulva.

Facultative hematophages, meanwhile, acquire at least some portion of their nutrition from non-blood sources in at least one of the sexually mature forms. Examples of this include many mosquito species, such as Aedes aegypti, whose both males and females feed on pollen and fruit juice for survival, but the females require a blood meal to produce its eggs. Fly species such as Leptoconops torrens can also be facultative hematophages. In anautogenous species, the female can survive without blood, but must consume blood in order to produce eggs (obligatory hematophages are by definition also anautogenous).

The mature adult female produces a batch of two to three hundred eggs, by parthenogenesis in most populations, and stores them in her ovisac until they hatch. The first instar nymph is known as a crawler and moves away from the mother scale. After about 10 days it becomes a second instar, and after a further 17 days, a third instar. After another 25 days, this becomes an immature adult, a stage that lasts for about 28 days, after which the mature adult starts to produce eggs and lives for about 45 days.

The replication cycle of a retrovirus entails the insertion ("integration") of a DNA copy of the viral genome into the nuclear genome of the host cell. Most retroviruses infect somatic cells, but occasional infection of germline cells (cells that produce eggs and sperm) can also occur. Rarely, retroviral integration may occur in a germline cell that goes on to develop into a viable organism. This organism will carry the inserted retroviral genome as an integral part of its own genome—an "endogenous" retrovirus (ERV) that may be inherited by its offspring as a novel allele.

This process occurs when the wetlands become dry during the warmer months, experiencing reduced and intermittent water flows. In September and October the adults take flight and produce eggs. Initial studies found the species to be abundant at its type locality, but its distribution was thought to be very limited. Further surveys located the species at more sites, and following a 12-month assessment, the United States Fish and Wildlife Service in 2012 determined the Platte River caddisfly was not suited to be listed as an endangered species.

Ethical motivations for excluding dairy products are based on issues with the industrial practices behind the production of milk. Concerns include the practice of keeping a cow constantly pregnant in order for her to lactate and the slaughter of unwanted male calves. Other concerns include the standard practice of separating the mother from her calf and denying the calf its natural source of milk.The Dairy Cow from the website of the Vegan Society This contrasts with the industrial practices surrounding egg-laying hens, which produce eggs for human consumption without being fertilized.

The diet of laying hens also may affect the nutritional quality of eggs. For instance, chicken eggs that are especially high in omega-3 fatty acids are produced by feeding hens a diet containing polyunsaturated fats from sources such as fish oil, chia seeds, or flaxseeds. Pasture-raised free-range hens, which forage for their own food, also produce eggs that are relatively enriched in omega-3 fatty acids when compared to those of cage-raised chickens. A 2010 USDA study determined there were no significant differences of macronutrients in various chicken eggs.

Shaw characterised Saint Joan as "A Chronicle Play in 6 Scenes and an Epilogue ". Joan, a simple peasant girl, claims to experience visions of Saint Margaret, Saint Catherine, and the archangel Michael, which she says were sent by God to guide her conduct. Scene 1 (23 February 1429): Robert de Baudricourt complains about the inability of the hens on his farm to produce eggs. Joan claims that her voices are telling her to lift the siege of Orléans, and to allow her several of his men for this purpose.

Viviparous fish include the families Goodeidae, Anablepidae, Jenynsiidae, Poeciliidae, Embiotocidae and some sharks (some species of the requiem sharks, Carcharinidae and the hammerheads, Sphyrnidae, among others). The halfbeaks, Hemiramphidae, are found in both marine and freshwaters and those species that are marine produce eggs with extended filaments that attach to floating or stationary debris, while those that are found in freshwater are viviparous with internal fertilization. The Bythitidae are also viviparous although one species, Dinematichthys ilucoeteoides, is reported to be ovoviviparous. Aquarists commonly refer to ovoviviparous and viviparous fish as "livebearers".

The female ostriches will lay their eggs at the same time, leading to having too many eggs in the nest. The major hen is able to detect which eggs belong to her and will push the other eggs on the perimeter of the nest, which is not looked after. This adaption of abandoning these eggs protects the well kept eggs from predators. In the grooved bill anis and in the guira cuckoo, these species will stop tossing eggs once they have started to produce eggs in the nest.

The mosquito life cycle consists of egg, larva, pupa, and adult stages. Eggs are laid on the water surface; they hatch into motile larvae that feed on aquatic algae and organic material. The adult females of most species have tube-like mouthparts (called a proboscis) that can pierce the skin of a host and feed on blood, which contains protein and iron needed to produce eggs. Thousands of mosquito species feed on the blood of various hosts ⁠— vertebrates, including mammals, birds, reptiles, amphibians, and some fish; along with some invertebrates, primarily other arthropods.

Kilner's research looks at how social evolution can generate biodiversity and much of her work looks at burying beetles (Silphidae) and birds. Her earlier research looked at birds that are brood parasites, which take advantage of other species' nests and parental care. In particular she found that cuckoos are able to produce eggs that mimic those of their host bird species. Kilner found that cowbirds, which are also brood parasites, do not try to outcompete the host chicks that they hatch next to (as with cuckoos) and instead cowbirds do better when the host chicks remain.

The mouth and pharynx have both cilia and well-developed muscles. In other parts of the canal system, the gastrodermis is different on the sides nearest to and furthest from the organ that it supplies. The nearer side is composed of tall nutritive cells that store nutrients in vacuoles (internal compartments), germ cells that produce eggs or sperm, and photocytes that produce bioluminescence. The side furthest from the organ is covered with ciliated cells that circulate water through the canals, punctuated by ciliary rosettes, pores that are surrounded by double whorls of cilia and connect to the mesoglea.

They live among the plankton and thus occupy a different ecological niche from their parents, only attaining the adult form by a more radical metamorphosis after dropping to the sea-floor. At least in some species, juvenile ctenophores appear capable of producing small quantities of eggs and sperm while they are well below adult size, and adults produce eggs and sperm for as long as they have sufficient food. If they run short of food, they first stop producing eggs and sperm, and then shrink in size. When the food supply improves, they grow back to normal size and then resume reproduction.

Winning a battle will grant the player rewards, such as coins, evolution material and eggs. In most regions of the game world, eggs won from these battles will only produce a bird of a particular plumage, depending on what zone the battle was fought in (i.e. battles won in the Yellow Desert would produce eggs for yellow birds). Eggs can also be hatched at the Bird Town to obtain new characters, with a chance to collect characters from The Angry Birds Movie, namely Matilda and her four anger management students (events only) and the elderly Shirley.

At the Houston Zoo This forced diet has affected the iguanas' ability to reproduce. As reproductive females are not being provided with enough nutrition to produce eggs and support their own metabolism; many do not survive after laying eggs, resulting in the present skewed sex ratio of 2 males to every female. Females usually lay one clutch of about 12-16 eggs per year in late spring or early summer. Anegada Island is rare in that it is not a volcanic island, but formed from coral and limestone providing many caves and natural burrows for the iguanas to live.

The new colonias were Santa María la Redonda, Guerrero and Santa María de la Ribera. The La Lagunilla market was created to replace the Santa Catarina tianguis, on lands next to it related to Callejón del Basilisco, the Plazuiela del Tequiesquite, Callejón de los Papas and 2a Calle de la Amargura. This first market was built between 1912 and 1913 as a series of wooden stalls with roofs by engineers Miguel Ángel de Quevedo and Ernesto Canseco. Initially, it was dedicated to the sale of produce, eggs and grains, with sections for domestic fowl and fish.

After further development in the stream snail, N. salmincola larva develop into rediae, which give rise to cercariae. The cercariae emerge from the snail and penetrate the second intermediate host, the salmonid (some non-salmonid) fish. The parasites develop into metacercaria and encyst within the kidneys, muscles, and fins of the salmonid fish. The parasites enter its final host, including canids and humans, upon ingestion of the infected fish, and develop into adult worms that produce eggs to be passed in the host’s feces.John, David T., and William A. Petri, Jr. Markell and Voge’s Medical Parasitology.

In her work Silent Spring, she wrote on DDT, a pesticide commonly used in human agricultural activities. Birds that ate the tainted bugs, Carson found, were more likely to produce eggs with thin and weak shells. These chemicals also play a role in human health, as consumption of tainted food (in processes called biomagnification and bioaccumulation) has been linked to issues such as cancers, neurological dysfunction, and hormonal changes. A well-known example of biomagnification impacting health in recent times is the increased exposure to dangerously high levels of mercury in fish, which can affect sex hormones in humans.

The need to feed on blood before laying eggs is less remarkable in animals whose ordinary diets consist largely or entirely of blood, such as ticks; in these taxa it is autogeny, or the ability to lay eggs without a blood meal, that is more remarked upon. Many insects are able to produce eggs without ingesting proteinaceous food as adults, relying upon stores of nutrients they acquired as larvae. Most, however, can lay relatively few eggs without feeding on protein, and almost all require a high-protein meal to lay additional eggs after a first batch.

Mosquitoes bite the waved albatrosses, directly leading to or transmitting diseases that cause nestling mortality, colony migration, or egg desertion in albatrosses. Experimental studies show that both sexes can survive on a sugar-only diet for 2–3 months, but females require blood meals for egg production. In females, supplementation of a blood meal in autogenous mosquitoes increased both egg production and lifespan. Additional observational studies of Ae. taeniorhynchus in nature showed that habitat impacts the effect of the meal source: females inhabiting mangrove swamps could produce eggs even without blood meals, but those from a grassy salt marsh environment could not.

In these systems, queen bees and wasps can mate and lay fertilized eggs that hatch into females. On the other hand, workers of most species in Hymenoptera can produce eggs, but cannot produce fertilized eggs due to loss of mating ability. Workers that lay eggs represent a cost for the colony because workers that lay eggs often do significantly less work, and thus negatively impact the health of the colony (for example: decreased amount of collected food, or less attention given to tending the queen's eggs). In this case, a conflict of interest arises between the workers and the colony.

Within a single barn, there may be several floors containing battery cages meaning that a single shed may contain many tens of thousands of hens. Light intensity is often kept low (e.g. 10 lux) to reduce feather pecking and vent pecking. Benefits of battery cages include easier care for the birds, floor-laid eggs (which are expensive to collect) are eliminated, eggs are cleaner, capture at the end of lay is expedited, generally less feed is required to produce eggs, broodiness is eliminated, more hens may be housed in a given house floor space, internal parasites are more easily treated, and labor requirements are generally much reduced.

Artificial gametes, also known as In vitro derived gametes (IVD), stem cell-derived gametes (SCDGs), and In vitro generated gametes (IVG), are gametes derived from stem cells. Research shows that artificial gametes may be a reproductive technique for same-sex male couples, although a surrogate mother would still be required for the gestation period. Women who have passed menopause may be able to produce eggs and bear genetically related children with artificial gametes. Robert Sparrow wrote, in the Journal of Medical Ethics, that embryos derived from artificial gametes could be used to derive new gametes and this process could be repeated to create multiple human generations in the laboratory.

Fishes that give birth to live young can be ovoviviparous, where the eggs are fertilized within the female and the eggs simply hatch within the female body, or in seahorses, the male carries the developing young within a pouch, and gives birth to live young. Fishes can also be viviparous, where the female supplies nourishment to the internally growing offspring. Some fish are hermaphrodites, where a single fish is both male and female and can produce eggs and sperm. In hermaphroditic fish, some are male and female at the same time while in other fish they are serially hermaphroditic; starting as one sex and changing to the other.

However, there are differences in adult sex ratios between families: in families in which females require multiple matings to keep producing eggs, sex ratios are less biased (close to 1); in families in which females can produce eggs continuously after only one mating, sex ratios are strongly skewed towards females. Several species of reptiles have temperature-dependent sex determination, where incubation temperature of eggs determines the sex of the individual. In the American alligator, for example, females are hatched from eggs incubated between , whereas males are hatched from eggs . In this method, however, all eggs in a clutch (20–50) will be of the same sex.

Toxic leather sea urchin (Asthenosoma marisrubri) Gold sea urchin (Tromikosoma sp.) at Phormosoma placenta Hygrosoma sp. Echinothurioids are nearly all found on the seabed at abyssal depths, but by way of an exception, Asthenosma ijimai is found in shallow water. Because of the difficulty in studying these echinothurioids at such depths, little is known of their feeding habits, but examination of their stomach contents suggests they eat detritus, mostly in the form of algal fragments. Their reproduction is also relatively unstudied, but some members of the group, such as Phormosoma placenta, produce eggs with large yolks which at first rise towards the surface and later sink again.

Taiwan's military is overwhelmingly male and only males are obligated to serve under conscription, this can cause complicated situations for intersex people. One noted case was in 1954 with the soldier Xie Jianshun who was originally assigned as a male at birth but was later discovered in the military to have many female characteristics. Xie had a penis but a very slim vaginal opening as well as internal gonads which contained both testicular and ovarian tissue, doctors determined that they could still produce eggs and that Xie's testicular tissue was deteriorating. Military doctors performed four surgeries despite Xie's desire to remain a man, afterwards Xie left the armed forces.

The newborn mice will therefore be chimeras: some parts of their bodies result from the original stem cells, other parts from the knocked-out stem cells. Their fur will show patches of white and grey, with white patches derived from the knocked-out stem cells and grey patches from the recipient blastocyst. #Some of the newborn chimera mice will have gonads derived from knocked-out stem cells, and will therefore produce eggs or sperm containing the knocked-out gene. When these chimera mice are crossbred with others of the wild type, some of their offspring will have one copy of the knocked-out gene in all their cells.

This amplexus behaviour allows the amphibians' cloacae to be in close contact, while gametes are released. Additionally, amplexus is thought to help with the alignment of the reproductive tracts of both males and females, which furthermore contributes to successful fertilization. A female amphibian may not always be receptive to a male amphibian who is trying to initiate amplexus, as the female may not be ready to produce eggs. When the female is not ready to engage in amplexus, she will simply vibrate her body, which will then be felt by the male who is clasped to her and he will then stop the amplexus behaviour.

The strongyloid's life cycle is heterogonic—it is more complex than that of most nematodes, with its alternation between free-living and parasitic cycles, and its potential for autoinfection and multiplication within the host. The parasitic cycle is homogonic, while the free-living cycle is heterogonic. The heterogonic life cycle is advantageous to the parasite because it allows reproduction for one or more generations in the absence of a host. In the free-living cycle, the rhabditiform larvae passed in the stool can either molt twice and become infective filariform larvae (direct development) or molt four times and become free-living adult males and females that mate and produce eggs from which rhabditiform larvae hatch.

In various species, gamergates reproduce in addition to winged queens (usually upon the death of the original foundress), while in other species the queen caste has been completely replaced by gamergates. In gamergate species, all workers in a colony have similar reproductive potentials, but as a result of physical interactions, a dominance hierarchy is formed and only one or a few top-ranking workers can mate (usually with foreign males) and produce eggs. Subsequently however, aggression is no longer needed as gamergates secrete chemical signals that inform the other workers of their reproductive status in the colony. Depending on the species, there can be one gamergate per colony (monogyny) or several gamergates (polygyny).

These pipefish have a polygynandrous mating system, with both males and females mating with multiple partners during a breeding season. Like other species of pipefish, the broadnosed pipefish is sex-role reversed: males brood the eggs and because of their increased investment in offspring are the choosier sex, whereas females compete more intensely than males for access to mates. Females can produce eggs faster than males can brood them, and are limited by the size of the male's brood pouch, which cannot carry all the eggs of a female similar to himself in size. Male brood time is approximately four to six weeks, during which time the male provides oxygen and nutrients to the developing embryos until they hatch.

In the South Concho River, TX, eggs averaged 1.3 mm in diameter, and increased in number with female size; average number of eggs in females examined was 74, with a range of about 15-200. In aquaria, spawning was observed at approximately 15-25 degrees C; over a 63-day period, a pair of Etheostoma lepidum laid 13 batches of eggs; numbers of eggs laid ranged from 47-109, totaling 1,115. Optimal temperature for egg production apparently 20-23 degrees C; a female held at this temperature range was observed to produce eggs, in the laboratory environment, over a period of at least 251 days. Egg incubation success is low above 24 degrees C.Hubbs, C., A.E. Peden, and M.M. Stevenson. 1969.

However, the infection can be prolonged because dormant larvae can be "recruited" sequentially from tissue "stores" (see Pathology, above) over many years, to replace expired adult worms. This can give rise to seasonal fluctuations in infection prevalence and intensity (apart from normal seasonal variations in transmission). Civilian Public Service workers built and installed 2065 outhouses for hookworm eradication in Mississippi and Florida from 1943 to 1947. They mate inside the host, females laying up to 30,000 eggs per day and some 18 to 54 million eggs during their lifetimes, which pass out in feces. Because 5 to 7 weeks are needed for adult worms to mature, mate, and produce eggs, in the early stages of very heavy infection, acute symptoms might occur without any eggs being detected in the patient's feces.

When the Bugrom homeland is annihilated by the Eye of God, she manages to avoid the attack with Jinnai's personal squad by traveling to deliver supplies to Katsuhiko on the frontline. At the start of the Alternate World series, she is urged by Jinnai to produce eggs for the new colony they are constructing, due to the Bugrom having been decimated by the Eye of God — Even though more survivors have found their way to the new colony, their numbers are still insufficient. However, much to Jinnai's horror, she needs to have a mate in order to give birth to a new generation, and Jinnai is the only male available at the time (at least, that is what she claims). Jinnai's attempt to escape her is why he and his squad are transported to Cretaria.

The yolk of a chicken egg Among animals which produce eggs, the yolk (also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Some types of egg contain no yolk, for example because they are laid in situations where the food supply is sufficient (such as in the body of the host of a parasitoid) or because the embryo develops in the parent's body, which supplies the food, usually through a placenta. Reproductive systems in which the mother's body supplies the embryo directly are said to be matrotrophic; those in which the embryo is supplied by yolk are said to be lecithotrophic. In many species, such as all birds, and most reptiles and insects, the yolk takes the form of a special storage organ constructed in the reproductive tract of the mother.

Aedes aegypti, a common vector of dengue fever and yellow fever Typically, both male and female mosquitoes feed on nectar, aphid honeydew, and plant juices, but in many species the mouthparts of the females are adapted for piercing the skin of animal hosts and sucking their blood as ectoparasites. In many species, the female needs to obtain nutrients from a blood meal before it can produce eggs, whereas in many other species, obtaining nutrients from a blood meal enables the mosquito to lay more eggs. A mosquito has a variety of ways of finding nectar or its prey, including chemical, visual, and heat sensors. Both plant materials and blood are useful sources of energy in the form of sugars, and blood also supplies more concentrated nutrients, such as lipids, but the most important function of blood meals is to obtain proteins as materials for egg production.

While this species is in the wild, dung constitutes a majority of the nutritional intake used for sexual development in both male and female adults, but diets with higher protein intake better facilitate mating ability of both sexes. Female sexual maturity requires the completion of 10 stages of follicle development in the ovaries to produce eggs that are completely mature, and ovaries in females which have been deprived of a high-protein diet do not develop fully. Although it is possible for females on a diet of only dung to reach the final stage of sexual maturity, it takes much more time than if they were to feed exclusively on beef liver; even then, a lower percentage of those feeding on dung will have fully developed. An experiment by Stoffolano demonstrated this, revealing that 100% of females feeding exclusively on beef liver were able to reach the final stage of sexual development after 13 days, while only 78% of females were able to do so when feeding exclusively on pig dung over a 20-day period.