• Induction of allotriploids in the hybrids ofOreochromis mossambicus female × red tilapia male

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    • Keywords


      Allotriploidy; heat shock; codominant

    • Abstract


      Cent percent allotriploids were induced by heat shocking (42°C for 3 min) of 2·5 min old (post-fertilization)Oreochromis mossambicus eggs fertilized with (homozygous) red tilapia milt. Control diploid hybrids were red (orange) in colour. A few triploid hybrids displayed more patches of black pigmentation. Hence red and black colours are regarded as co-dominants. Survival of the allotriploids was higher than that ofOreochromis mossambicus autotriploids.

    • Author Affiliations


      K Varadaraj1 T J Pandian1

      1. School of Biological Sciences, Madurai Kamaraj University, Madurai - 625 021, India
    • Dates


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