Section 5
Chapter 4,834

Biochemical genetic analyses of the grass carp ctenopharyngodon idella female x bighead carp hypophthalmichthys nobilis f 1 hybrid and the parental species

Magee, S.M.; Philipp, D.P.

Transactions of the American Fisheries Society 111(5): 593-602


ISSN/ISBN: 0002-8487
Accession: 004833138

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The patterns of isozyme expression in tissues of the grass carp C. idella bighead carp H. nobilis and F1 hybrid (grass carp .female. .times. bighead carp .male.) were analyzed by vertical starch gel electrophoresis and histochemical staining procedures. Both parental species and the F1 hybrid were fixed for electrophoretically indistinguishable alleles at 21 of 30 loci studied. The 2 parental species were fixed for different alleles at the remaining 9 loci. Quantitative isozyme determinations were used to calculate the parental gene dosages in individuals of the 1979, 1980 and 1981 broods of F1 hybrids produced in Arkansas [USA]. Exclusive of low percentages of gynogenetic grass carp observed, the percentages of triploid F1 hybrids were 100% (1979), 44% (1980) and 100% (1981).

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