The banding karyotypes ofOryzomys talamancaeandOryzomys capito(Rodentia, Cricetidae)

Autor:	Antonio Perez-Zapata, Marisol Aguilera
Rok vydání:	1996
Předmět:	biology Genus Genetics Chromosome Zoology Capito Karyotype Oryzomys talamancae Oryzomys capito General Agricultural and Biological Sciences biology.organism_classification Oryzomys Cricetidae
Zdroj:	Caryologia. 49:321-326
ISSN:	2165-5391 0008-7114
DOI:	10.1080/00087114.1996.10797376
Popis:	SUMMARYOryzomys is the genus of South American cricetine rodents with the greatest number of species. More than 50 nominal forms have been assigned to the genus, but the taxonomical situation of most of these still confusing. Oryzomys also shows a great chromosomic differentiation and it karyotypes have been used as a diagnostic character for its species. With the aim of determinating the taxonomical frontiers between the species of the macconnelli-capito group, the banding karyotypes of two morphologically similar species of this group: O. talamancae and O. capito were studied. The karyotype of Oryzomys talamancae is very different from that of the other species of this genus, because it has few elements (34) and they are all biarmed. On the other hand, the karyotype of O. capito, constituted by 54 chromosomes, mostly acrocentrics, is rather ordinary among the oryzomyine. G-banding was performed with tripsin treatment, and C-bands by denaturation-renaturation. The comparison of the G-banding patterns all...
Databáze:	OpenAIRE
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