She found that female cavies (Cavia porcellus) undergo estrus -- and thus reproduce -- unless they are in contact with a male cavy (Cavia porcellus). Weir also found that chinchillas follow this pattern, but that a regimen of exogenous gonadotropins can induce estrus and ovulation in chinchillas.
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One of the area's favorite foods is the guinea pig or cavy (Cavia porcellus), called kuy or kuwi.Kichwa Yachakukkunapa Shimiyuk Kamu (Ministry of Education, Ecuador) The economy of this city is based on border trade between Ecuador and Colombia.
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Cavia guianae is a guinea pig species from South America. It is found in southern Venezuela, Guyana, and portions of northern Brazil. Some biologists believe it to be a feral offshoot of the domestic guinea pig, Cavia porcellus; others subsume it under the wild cavy, Cavia aperea.
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Cavia is a genus in the subfamily Caviinae that contains the rodents commonly known as guinea pigs or cavies. The best-known species in this genus is the domestic guinea pig, Cavia porcellus, an important meat animal in South America and a common household pet outside South America.
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Inside the houses, a large proportion of the rural population also keeps domestic cavies (i.e., Guinea pig, Cavia porcellus) for meat production, although they are rarely mentioned in statistics. Locally, the animals are called simbilisi, which is a Kihehe word. In Makete District, cavies are largely fed with bamboo leaves.
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Its weight was estimated at 408 g on the basis of an average femur depth of 4.8 mm.Rouse and Morse, 1999 An unidentified Rattus, the agouti Dasyprocta leporina, and the guinea pig (Cavia porcellus), all of which were introduced to the island by humans, have also been found in archeological sites.Wing et al., 1968, pp.
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Cavia anolaimae is a guinea pig species from South America. It is found in Colombia near Bogotá. It is believed to be a feral offshoot of the domestic guinea pig, Cavia porcellus, and is often treated as a synonym of C. porcellus, but Zúñiga et al. (2002), based on morphologic characters, recognized them as different species.
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The Brazilian guinea pig (Cavia aperea) (preá in Portuguese) is a guinea pig species found in Argentina, Brazil, Bolivia, Colombia, Ecuador, Guyana, Paraguay, Uruguay and Venezuela. Cavia aperea has been successfully mated to the domestic guinea pig, Cavia porcellus, though many females become infertile in successive generations. Brazilian guinea pigs are mainly diurnal animals and are narrower and longer than domesticated guinea pigs.
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Pentraxin proteins expressed in the nervous system are neural pentraxin I (NPTXI) and II (NPTXII). NPTXI and NPTXII are homologous and can exist within one species. It is suggested that both proteins mediate the uptake of synaptic macromolecules and play a role in synaptic plasticity. Apexin, a sperm acrosomal protein, is a homologue of NPTXII found in Cavia porcellus (Guinea pig).
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Its small stature and short generation time facilitates rapid genetic studies,About Arabidopsis on The Arabidopsis Information Resource page (TAIR) and many phenotypic and biochemical mutants have been mapped. A. thaliana was the first plant to have its genome sequenced. Among vertebrates, guinea pigs (Cavia porcellus) were used by Robert Koch and other early bacteriologists as a host for bacterial infections, becoming a byword for "laboratory animal," but are less commonly used today. The classic model vertebrate is currently the mouse (Mus musculus).
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The scientific name of the common species is Cavia porcellus, with ' being Latin for "little pig". Cavia is New Latin; it is derived from cabiai, the animal's name in the language of the Galibi tribes once native to French Guiana. Cabiai may be an adaptation of the Portuguese çavia (now savia), which is itself derived from the Tupi word saujá, meaning rat. Guinea pigs are called quwi or jaca in Quechua and cuy or cuyo (plural cuyes, cuyos) in the Spanish of Ecuador, Peru, and Bolivia.
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Barbara Weir was a pioneer of the study of reproductive biology of hystricomorpha rodents at the Wellcome Institute of Comparative Physiology, part of the Zoological Society of London. While there, Weir expanded studies of estrus induction in female chinchillas (Chinchilla chinchilla) and female guinea pigs (Cavia porcellus). Weir worked at Cambridge University in 1968, where she completed doctoral work on chinchillas (Chinchilla chinchilla) and their relatives and conducted several field expeditions to Argentina, Bolivia, and Peru. This was extraordinary in a time when women were not expected or often allowed to be field biologists.
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Cavia is classified in order Rodentia, although there was once a minority belief in the scientific community that evidence from mitochondrial DNA and proteins suggested the Hystricognathi might belong to a different evolutionary offshoot, and therefore a different order. If this had been so, it would have been an example of convergent evolution. However, this uncertainty is largely of historical interest, as abundant molecular genetic evidence now conclusively supports classification of Cavia as rodents. (and references therein) This evidence includes draft genome sequences of Cavia porcellus and several other rodents.
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The guinea pig or domestic guinea pig (Cavia porcellus), also known as cavy or domestic cavy (), is a species of rodent belonging to the family Caviidae and the genus Cavia. Despite their common name, guinea pigs are not native to Guinea, nor are they closely biologically related to pigs, and the origin of the name is still unclear. They originated in the Andes of South America. Studies based on biochemistry and hybridization suggest they are domesticated descendants of a closely related species of cavy, such as C. tschudii, and do not exist naturally in the wild.
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Roast guinea pig (Cavia porcellus) in Peru Guinea pigs, or cuy, are commonly eaten in Peru, in the southwestern cities and villages of Colombia, and among some populations in the highlands of Ecuador, mostly in the Andes highlands. Cuyes can be found on the menu of restaurants in Lima and other cities in Peru, as well as in Pasto, Colombia. Guinea pig meat is exported to the United States and European nations. In 2004, the New York City Department of Parks and Recreation took legal action to stop vendors serving cuy at an Ecuadorian festival in Flushing Meadows Park.
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The highest altitudes support the endangered mountain tapir (Tapirus pinchaque), cougar (Puma concolor), guinea pig (Cavia porcellus), and Andean fox (Lycalopex culpaeus). Lower down, the spectacled bear (Tremarctos ornatus), jaguar (Panthera onca), ocelot (Leopardus pardalis), margay (Leopardus wiedii), white-tailed deer (Odocoileus virginianus), brocket deers (Mazama sp.), vulnerable northern pudú (Pudu mephistophiles), and endangered giant otter (Pteronura brasiliensis) can all be found. Bird species common in the area include the Andean condor (Vultur gryphus), Andean cock-of-the-rock (Rupicola peruvianus), giant hummingbird (Patagona gigas), torrent duck (Merganetta armata), king vulture (Sarcoramphus papa), and swallow-tailed kite (Elanoides forficatus).
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Gessner is credited with a number of the first descriptions of species in Europe, both animals such as the brown rat (Rattus norvegicus), guinea pig (Cavia porcellus) and turkey (Meleagris), as well as plants such as the tulip (Tulipa gesneriana). He first saw a tulip in April 1559, growing in the garden of the magistrate Johann Heinrich Herwart at Augsberg, and called it Tulipa turcarum, the Turkish tulip. He is also credited with being the first person to describe brown adipose tissue, in 1551, in 1565 the first to document the pencil, and in 1563 among the first Europeans to write about the effects of tobacco.
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After a short postdoctoral research fellowship supervised by Abdus Salam at the International Centre for Theoretical Physics in Trieste, Italy he retrained as a physiologist at UCL, gaining a Master of Science degree in 1974 which led to work with Paul Fatt and Gertrude Falk between 1974 and 1977 in the Biophysics Department. Ashmore was appointed a Lecturer in Physiology at the University of Bristol in 1983 and promoted to Reader in 1988, before moving back to UCL in 1993. Ashmore has worked on dissecting the cellular mechanisms of hearing by studying the organ of Corti in the mammalian cochlea especially the guinea pig (Cavia porcellus). This structure in the inner ear increases the selectivity and sensitivity of our hearing through an in-built cochlear amplifier.
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White-tailed deer formed the main meat in the diet of the inhabitants of Aguazuque In all of the layers of the Aguazuque site, remains of fauna have been uncovered. The fauna, part of the cuisine of the inhabitants of Aguazuque, consisted of mammals, reptiles, birds, fish and invertebrates such as gastropods, fresh water oysters and crustaceans. As at the other sites on the Altiplano Cundiboyacense, the main part of the diet of the people was formed by white-tailed deer (Odocoileus virginianus). Other mammals included little red brocket (Mazama rufina), guinea pigs (Cavia porcellus), nine-banded armadillo (Dasypus novemcinctus), white-lipped peccary (Tayassu pecari), crab-eating fox (Dusicyon thous), spectacled bear (Tremarctos ornatus), ocelot (Felis pardalis), puma (Felis concolor), lowland paca (Agouti paca), Agouti taczamawskii, Dasyprocta, ring-tailed coati (Nasua nasua), western mountain coati (Nasuella olivacea), common opossum (Didelphis marsupialis) and collared anteater (Tamandua tetradactyla).
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Ascorbic acid is a common enzymatic cofactor in mammals used in the synthesis of collagen, as well as a powerful reducing agent capable of rapidly scavenging a number of reactive oxygen species (ROS). Given that ascorbate has these important functions, it is surprising that the ability to synthesize this molecule has not always been conserved. In fact, anthropoid primates, Cavia porcellus (guinea pigs), teleost fishes, most bats, and some passerine birds have all independently lost the ability to internally synthesize Vitamin C in either the kidney or the liver. In all of the cases where genomic analysis was done on an ascorbic acid auxotroph, the origin of the change was found to be a result of loss-of-function mutations in the gene that codes for L-Gulono-γ- lactone oxidase, the enzyme that catalyzes the last step of the ascorbic acid pathway outlined above.
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