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Karyological Studies on two Indian Estuarine Catfishes,Plotosus CaniusHam. andPseudeutropius Atherinoides(Bloch)

 

作者:

 

期刊: Caryologia  (Taylor Available online 1983)
卷期: Volume 36, issue 2  

页码: 139-144

 

ISSN:0008-7114

 

年代: 1983

 

DOI:10.1080/00087114.1983.10797653

 

出版商: Taylor & Francis

 

数据来源: Taylor

 

摘要:

Somatic chromosomes of two Indian estuarine Catfishes,Plotosus canius(Plotosidae) andPseudeutropius atherinoides(Schilbeidae), were studied from kidney cells of both sexes. The diploid complement ofP. caniusincludes 36 chromosomes of which there are 5 pairs of metacentric, 5 pairs of submetacentric and 8 pairs of acrocentric nature (FN = 56). In the 2n= 58 karyotype ofP. atherinoides, there are 14 pairs of metacentric, 6 pairs of submetacentric, 1 pair of subtelocentric and 8 pairs of acrocentric chromosomes (FN = 98). No sex chromosomes were observed in either species. The results show that the family Plotosidae may be an exceptional group of Siluriformes characterised by low diploid numbers. The Schilbeidae, on the other hand, is evidently less divergent.

 

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