A KARYOLOGICAL STUDY OF TURTLES FROM BRAZILIAN AMAZON REGION

被引：33

作者：

AYRES, M

SAMPAIO, MM

BARROS, RMS

DIAS, LB

CUNHA, OR

机构：

[1] Laboratorio de Génctica, Ciências e Letras, Universidade Federal do Pará, Belém

[2] Departamento de Histologia e Embriologia, Universidade Federal do Pará, Belém

[3] Museu Paraense ‘Emilio Goeldi’, Belém

来源：

CYTOGENETICS | 1969年 / 8卷 / 06期

关键词：

D O I：

10.1159/000130051

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The karyotypes of five turtles of the genus Podocnemis from the Amazon Region of Brazil were determined. Four species, P. cayemensis, P. expansa, P. sextuberculata and P. unifilis have 28 (2n) chromosomes and one, P. dumeriliatia, has 26 (2n). No morphologically distinguishable sex chromosomes could be observed. The difference in number in P. dumeriliatia can be explained by the occurrencc of a centric fusion. The chromosome numbers in this genus are extremely low when compared with the range previously found in Chclonia (2n = 50 to 64). © 1969 S. Karger AG, Basel.

引用

页码：401 / &

共 7 条

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