Genus, Cavia Pallas, Species, Cavia tschudii Fitzinger, – Montane Guinea Pig. Direct Children: Subspecies, Cavia tschudii arequipae Osgood, AnAge entry for Cavia tschudii. Classification (HAGRID: ). Taxonomy: Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry). Familia: Caviidae Subfamilia: Caviinae Genus: Cavia Species: Cavia tschudii. Name[edit]. Cavia tschudii Fitzinger,

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Only the Y chromosomes and two autosomal pairs Cavia tschudii chromosomes 12, 13 and Tschueii porcellus chromosomes 14, 18 were unique of each species karyotype Table 1.

Cavia tschudii

Molecular Biology and Evolution 7: Reproduction ttschudii wild mammal species in captivity is a difficult and not always successful task. It is even more difficult to obtain descendants from crosses between different chromosomal races or species in the laboratory Walker et al.

Rock Cavy Kerodon rupestris Acrobatic cavy Tschjdii acrobata. Carnegie Institution of Washington Publications At least 10 good-quality metaphases for each of the staining methods per taxon were selected under a light microscope and digitally captured and stored. National Center for Biotechnology InformationU. The number and morphology of Cavia tschudii and Caavia porcellus chromosomes were similar to those reported for other subspecies and species of the genus Cavia.

Our objective is to discover the chromosomal and genomic cavix between these two species of Cavia in relation to the divergence associated with the domestication process.

Cricetidae in northwestern Argentina: Received Mar 13; Accepted Jun Based on these molecular results and on the analysis of mummified guinea pig remains found in archeological sites, Spotorno et al.

Vuilleumier F, Monasterio M. Submetacentric Cavia tschudii chromosomes Cts, first column at the left that originate the subtelocentric Cavia porcellus chromosomes Cpo, last column at the right: The cranial and dental remains were recovered from an owl pellet sample found in eastern slopes of the Ambato range, at m elevation, in a highland grasslands-Chaco Serrano ecotone. Cavia porcellus would be the domestic successor of Cavia tschudii from which it would have originated more than and possibly years ago Wing by a process of domestication and artificial selection in the Cavia tschudii populations which inhabit southern Peru and northern Chile Spotorno et al.


Retrieved from ” https: Rough simulation of the changes associated with the occurrence of pericentric inversions in Cavia tschudii chromosomes.

If the analysis of the crosses realized between chromosomal races of Mus and Sorex rodents Hauffe and SearleCastiglia and CapannaFranchini et al. Cytogenetic and Cell Genetics On mammals collected by Sr. International Journal of Human Genetics 7: Comparative Cytogenetics 8 2: Chromosomes were obtained from marrow cells using conventional in vivo colchicine, hypotonic method, preceded by yeast injection to improve the mitotic index Lee and Elder Most of the chromosomes of both species were tentatively identified according size and morphology.

The differences in the number of AgNOR bands found between the two Cavia species analyzed here and among the tschudii in each of them, confirmed the tendency to variability in NOR expression usually described for mammals. It has been proposed that this variability would depend mainly on the specific metabolic demands of cells and individuals Mikelsaar et al.

Montane guinea pig

Moreover, when we examined all the 3. Open in a separate window. The montane guinea gschudiiCavia tschudiia type of rodentis a guinea pig species from the Andes in South America.

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. This page was last edited on 15 Februaryat Cytogenetic and Genome Research Views Read Edit View history.

Mammalian Chromosome Newsletter Both Y chromosomes were completely heterochromatic, being larger the Y chromosome of Cavia tschudii than the Cavia porcellus one Fig. Proceedings of National Academy of Sciences Studies on Neotropical Fauna and Environment 19 3: Journal of Evolutionary Biology Animal Behaviour Monographs 5: By contrast, other wild specimens from Ica, Peru that also received the name Cavia cutleri by Tschudi inwere finally renamed as Cavia tschudii by Fitzinger in see Weir ; the latter is now the usually accepted name for the wild montane guinea pig Woods and Kilpatrick Montane guinea pig Conservation status.


C bands The chromosomal distribution of the C bands was similar in the karyotypes of the two species, being located preferentially in the centromeres and the short arms of the chromosomes Fig. The differences in morphology and the partial G band correspondences detected between four chromosomal pairs of these two species, suggest that the four submetacentric chromosomes present only in the Cavia tschudii karyotype would have suffered pericentric inversions originating the four subtelocentric chromosomes of Cavia porcellus Fig.

By contrast, the crosses between Cavia porcellus and Cavia aperea sensu Erxleben, Pictet and FerreroRood and between Cavia porcellus and Cavia cutleri Tschudi, sensu Bennet, Castle produced hybrids which were fertile in both sexes. Johns Hopkins University Press.

Montane guinea pig (Cavia tschudii) longevity, ageing, and life history

The chromosomal distribution of the C bands was similar in the karyotypes of the two species, being located preferentially in the centromeres and the short arms of the chromosomes Fig. To investigate the genetic divergence between the wild and domestic species of guinea pigs from a cytogenetic perspective, we characterized and compared the C, Ttschudii and AgNOR banded karyotypes of cavua identified Cavia tschudii and Cavia porcellus Linnaeus, specimens for the first time.

CasillaSantiago 7, Chile. Cytogenetics and Cell Genetics Capybara Hydrochoerus hydrochaeris Lesser Capybara Hydrochoerus isthmius. Genetics and Molecular Biology The statistical significance of the differences was estimated using a Chi squared test. Eds High altitude tropical biogeography.