Abstract:
:An electrophoretic analysis of 12 allozyme systems (14 loci, 40 alleles) was performed in the rodent genera Oryzomys and Oligoryzomys, in order to determine the levels of genetic variability within and among populations and species. One hundred and fifty-five individuals from 16 populations of Oryzomys russatus, Or. angouya, Oligoryzomys flavescens, and O1. nigripes species were trapped in nine Brazilian localities. Genetic divergence among populations, as well as the interpopulational gene diversity, was higher in Oryzomys than in Oligoryzomys. The dendrogram of the phenetic relationships among the 16 populations of these four species displays three clusters: the first one joins the O1. flavescens populations with those of O1. nigripes; the second groups the populations of Or. russatus, and the last assembles the populations of Or. angouya. The genetic parameters analyzed reveal that the species belonging to the genus Oryzomys are genetically more structured than those of Oligoryzomys, the latter presenting lower levels of intrademe genetic differentiation (G(ST)')
journal_name
Biochem Genetjournal_title
Biochemical geneticsauthors
Perini MV,Weimer TA,Callegari-Jacques SM,Mattevi MSdoi
10.1023/b:bigi.0000039807.50393.30subject
Has Abstractpub_date
2004-10-01 00:00:00pages
317-29issue
9-10eissn
0006-2928issn
1573-4927journal_volume
42pub_type
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