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A standardized G‐banded karyotype for the raccoon (Procyon lotor)compared with the domestic cat

 

作者: Roscoe Stanyon,   Francesca Bigoni,   Johannes Wienberg,   John Hadidian,  

 

期刊: Bolletino di zoologia  (Taylor Available online 1993)
卷期: Volume 60, issue 1  

页码: 41-45

 

ISSN:0373-4137

 

年代: 1993

 

DOI:10.1080/11250009309355789

 

出版商: Taylor & Francis Group

 

关键词: Phylogeny;Cytogenetics;Caruivores;Procyonids

 

数据来源: Taylor

 

摘要:

We propose a standardized karyotype for the raccoon(Procyon lotor;2n = 38, FN 74) and compare it with that of the domestic cat (2n = 38, FN 72). Numerous chromosomes (12) have similar and sometimes identical G‐banding and 14 chromosome pairs have remained intact. Other chromosomes apparently differ by Robertsonian translocations and inversions. The conservation of these karyotypes is remarkable considering that the divergence of procyonids and felids predates 50 million years B.P. However, the common diploid number of 38 is not a primitive retention, as sometimes hypothesized. Instead, cats and raccoons converged on this chromosome number by a different series of translocations. The unsolved problems of carnivore phylogeny could benefit from a combination of high resolution banding and molecular cytogenetic analyses.

 

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