• Genetic and morphological variations in the Indian mackerelRastrelUger kanagurta (Cuvier 1817) from the Goa region

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    • Keywords


      Genetic structure; heterozygosity; meristic characters; RastrelUger kanagurta

    • Abstract


      The population structure ofRastrelliger kanagurta (Cuvier 1817) from two localities off Goa (Arabian sea) was assessed from genetic and morphological characters. Seventeen loci were examined from 8 enzymes, sarcoplasmic proteins and hemoglobins. The allele frequencies were not significantly different between the two localities. Nei’s genetic distance value was 0-0017. The proportion of polymorphic loci at the 1% level was 47-1 and 52–9%. The level of genetic variation, estimated by average observed heterozygosity, was 5–8 and 6–6%. The sarcoplasmic protein-2 locus was found to be highly polymorphic. Significant (P< 0-001) departures from Hardy-Weinberg expectations were observed at this locus. About 67–89% of the variation in meristic characters was found to be within the groups.

    • Author Affiliations


      Maria R Menezes1 Sandeep Naik1 Maria Martins1

      1. National Institute of Oceanography, Dona Paula, Goa - 403 004, India
    • Dates


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