A ZZ/ZW sex chromosome system in a new species of the genus Parodon (Pisces, Parodontidae)

被引：51
|
作者：
Centofante, L [1 ]
Bertollo, LAC [1 ]
Moreira, O [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil
来源：
CARYOLOGIA | 2002年 / 55卷 / 02期
关键词：
biological diversity; Parodon fish; sex chromosomes;
D O I：
10.1080/00087114.2002.10589270
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A chromosome analysis was carried out in two sympatric fish species of the genus Parodon, Parodon sp. and P tortuosus, from the Paran basin, Sao Paulo State, Brazil. Although both species showed the same diploid number (2n=54), an interspecific diversity was detected concerning their karyotypic formulas and banding patterns, besides a ZZ/ZW sex chromosome system detected in Parodon sp., which was caracterized as a new species for this genus. No heteromorphic sex chromosomes were found in R tortuosus. These data are discussed concerning the characterization of the regional ictiofauna and its evolutionary aspects.
引用
收藏
页码：139 / 150
页数：12
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