Morphological comparisons of diploid and triploid hybrid grass carp, Ctenopharyngodon idella♀×Hypophthalmichthys nobilis♂ |
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| Authors: | J R Cassani W E Caton B Clark |
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| Institution: | Lee County Hyacinth Control District, P.O. Box 06005, Fort Myers, Florida 33906, U.S.A.;Department of Biology, University of South Florida, Tampa, Florida 33620, U.S.A. |
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| Abstract: | Morphological and karyological comparisons of 25–28 hybrid grass carp from each of 3 year-classes (1979–1981) indicated that diploid fish resulted during 1979 (82.1%) and 1980 (76.0%) the others being triploid. All of the fish tested from the 1981 year-class were triploid. Most triploid fish differed from diploid fish by having a faster growth rate, fewer scales in the lateral line and transverse series below the lateral line, a relatively longer gut, and fewer deformities. |
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