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Genetic characterization in four sciaenid species from the Arabian Sea
Author(s) -
Menezes M. R.,
Naik S.,
Martins M.
Publication year - 1993
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1993.tb00410.x
Subject(s) - biology , loss of heterozygosity , allele , genetic variation , genetic distance , isozyme , genetics , zoology , gene , enzyme , biochemistry
Four sciaenid species Johnieops dussumieri, Kathala axillaris, Pennahia macropthalmus and Otolithes ruber were analysed electrophoretically for genetic variation at 18 loci (16 in P. macropthalmus and O. ruber ). Twelve loci were polymorphic in J. dussumieri , 10 in K. axillaris , three in P. macropthalmus and 12 in O. ruber ( P <0·99). Average heterozygosity ranged from 0·033 ± 0·100 to 0·070 ± 0·122. The allele frequencies of 14 loci were used to estimate Nei's genetic distance (D̄). The D̄ values ranged from 0·334 to 0·612. Three isozyme loci ( LDH‐B*, MDH‐2* and G3PDH‐1* ) were found to be the most reliable species‐specific markers.