Evidence for a System of Supernumerary Chromosomes inProchilodus ScrofaSteindachner, 1881 (Pisces, Prochilodontidae)
作者:
期刊:
Caryologia
(Taylor Available online 1983)
卷期:
Volume 36,
issue 4
页码: 307-314
ISSN:0008-7114
年代: 1983
DOI:10.1080/00087114.1983.10797671
出版商: Taylor & Francis
数据来源: Taylor
摘要:
Both males and females of the fishProchilodus scrofahave a diploid number of 2n= 54. However, with the exception of a single female, all 59 specimens (25 ♀, 34 ♂) studied had 1–5 minutes accessory chromosomes. The unstable behavior of these chromosomes during mitosis and meiosis as well as their heterochromatic nature, as detected by C-banding, are characteristics that emphasize their supernumerary nature. This is the first report of chromosomes of this type in the Osteichthyes (Pisces).
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