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BIBTEX RIS

Chromosomal banding patterns in <i>Akodon arviculoides</i> (2n=14), <i>Akodon </i>sp. (2n=24 and 25), and two male hybrids with 19 chromosomes

1975; Karger Publishers; Volume: 15; Issue: 6 Linguagem: Inglês

10.1159/000130538

ISSN

1424-8581

Autores

Y. Yonenaga, Sanae Kasahara, Eunice Judith Cardoso de Almeida, Adriano Lúcio Peracchi,

Tópico(s)

Marine Biology and Ecology Research

Resumo

Chromosomal polymorphism resulting from two pericentric inversions in Akodon arviculoides (2n=14) has been described (YONENAGA, 1972a). In this paper the banding patterns are presented and identification of the inverted segments of the autosomal pairs 2 and 3 is made. The karyotype of Akodon sp., which varies in diploid number (2n-24 and 25), is described and shown to be due to the presence of a small submetacentric chromosome in the 2n=25 individuals. The karyotypes of two 2n=19 males studied show that they are hybrids between Akodon arviculoides (2n=14) and Akodon sp. (2n=24).

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