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Altered body shape as a morphometric indicator of triploidy in Indian catfish Heteropneustes fossilis (Bloch)
Author(s) -
Tiwary B K.,
Kirubagaran R.,
Ray A K.
Publication year - 1999
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.1999.00426.x
Subject(s) - heteropneustes fossilis , catfish , biology , aquaculture , ploidy , fish <actinopterygii> , karyotype , fishery , zoology , anatomy , genetics , chromosome , gene
Triploid fish are usually detected by various cytological techniques, such as karyotyping, flow cytometry, etc. However, these methods cannot be applied on an aquaculture farm with scanty resources. In the search for an easy and rapid morphometric method various body proportion ratios were compared between diploid and triploid fish. Despite many significant differences of morphometric ratios among two ploidy groups, only the ratio between standard length and body depth (SL/BD) was found to be a precise indicator of triploidy in Indian catfish Heteropneustes fossilis under our experimental conditions. This ratio may be useful in segregating triploids from diploids of this catfish in a aquaculture farm.