CYTOGENETICS OF BISEXUAL UNISEXUAL SPECIES OF POECILIA .1. C-BANDS, AG-NOR POLYMORPHISMS, AND SEX-CHROMOSOMES IN 3 POPULATIONS OF POECILIA-LATIPINNA

被引：43

作者：

SOLA, L ^{[1
]}

MONACO, PJ ^{[1
]}

RASCH, EM ^{[1
]}

机构：

[1] E TENNESSEE STATE UNIV,DEPT BIOPHYS,JOHNSON CITY,TN 37614

来源：

CYTOGENETICS AND CELL GENETICS | 1990年 / 53卷 / 2-3期

关键词：

D O I：

10.1159/000132917

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Three populations of the North American cyprin-odont fish Poecilia latipinna, considered to be one of the progenitor species of the gynogenetic unisexual P.formosa. were analyzed by C-banding and Ag-staining. C-bands were found to be polymorphic, and Ag-staining showed a high degree of variability in both the number and location of nucleolus organizer regions. The C-banding and Ag-staining patterns allow, to a certain extern. to distinguish individual specimens from each of these populations. Females of the three populations were found to have a het-eromorphic chromosome pair, which was frequently identifiable with Giemsa staining and always after C-banding. This pair could be interpreted as sex chromosomes of the ZWZZ type. © 1990 S. Karger AG, Basel.

引用

页码：148 / 154

页数：7

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