ArticleComparative cytogenetics2014
Similarities and differences among the chromosomes of the wild guinea pig Cavia tschudii and the domestic guinea pig Cavia porcellus (Rodentia, Caviidae).
Article in Comparative cytogenetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 13 citations in OpenAlex.
- Sex-Related Shape Variation and Right-Left Asymmetry in the Stylopodium and Zeugopodium of Guinea Pigs.Animals : an open access journal from MDPI · 2025Article
- Genome Divergence Based on Entropic Segmentation of DNA.Entropy (Basel, Switzerland) · 2025Article
- Guinea pig meat production in South America: Reviewing existing practices, welfare challenges, and opportunities.Animal welfare (South Mimms, England) · 2025Review
- First complete mitochondrial genome of the Alashan ground squirrel (Mitochondrial DNA. Part B, Resources · 2024Article
- High-altitude rodents have abundant collaterals that protect against tissue injury after cerebral, coronary and peripheral artery occlusion.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021Article
- Advances in cytogenetics of Brazilian rodents: cytotaxonomy, chromosome evolution and new karyotypic data.Comparative cytogenetics · 2017Review
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cavia tschudii Fitzinger, 1867 is a wild guinea pig species living in South America that according to the analysis of mitochondrial genes is the closest wild form of the domestic guinea pig. To investigate the genetic divergence between the wild and domestic species of guinea pigs from a cytogenetic perspective, we characterized and compared the C, G and AgNOR banded karyotypes of molecularly identified Cavia tschudii and Cavia porcellus Linnaeus, 1758 specimens for the first time. Both species showed 64 chromosomes of similar morphology, although C. tschudii had four medium size submetacentric pairs that were not observed in the C. porcellus karyotype. Differences in the C bands size and the mean number of AgNOR bands between the karyotypes of the two species were detected. Most of the two species chromosomes showed total G band correspondence, suggesting that they probably represent large syntenic blocks conserved over time. Partial G band correspondence detected among the four submetacentric chromosomes present only in the C. tschudii karyotype and their subtelocentric homologues in C. porcellus may be explained by the occurrence of four pericentric inversions that probably emerged and were fixed in the C. tschudii populations under domestication. The role of the chromosomal and genomic differences in the divergence of these two Cavia species is discussed.
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