三种兔脂鲤属（鱼类，无齿脂鲤科）物种的异形性染色体。
Heteromorphic sex chromosomes in three species of the genus Leporinus (Pisces, Anostomidae).
作者信息
Galetti P M, Foresti F, Bertollo L A, Moreira Filho O
出版信息
Cytogenet Cell Genet. 1981;29(3):138-42. doi: 10.1159/000131562.
PMID:7226896
Abstract
The present paper describes three cases of heteromorphic sex chromosomes in fishes of the genus Leporinus (Anostomidae). An XX/XY type was found in Leporinus lacustris and a ZZ/ZW type in L. silvestrii and L. obtusidens. These facts agree with the observations of Ebeling and Chen (1970), who suggested that heterogamety evolved not once but many times among the teleosts.
摘要
本文描述了兔脂鲤属（无齿脂鲤科）鱼类中三例异形性染色体的情况。在湖栖兔脂鲤中发现了XX/XY型，在银兔脂鲤和钝齿兔脂鲤中发现了ZZ/ZW型。这些事实与埃贝林和陈（1970年）的观察结果一致，他们认为异型配子在硬骨鱼中不是进化了一次，而是进化了很多次。
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