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Production of Induced Gynogenetic Diploid Bagrid Catfish Leiocassis ussuriensis (Siluriformes) - II. Viability, Early Growth and Sex Ratio of Gynogenetic Diploidy  

Park, Sang-Yong (Department of Marine Biotechnology, Soonchunhyang University)
Nam, Yoon-Kwon (Department of Aquaculture, Pukyong National University)
Bang, In-Chul (Department of Marine Biotechnology, Soonchunhyang University)
Publication Information
Journal of Aquaculture / v.20, no.3, 2007 , pp. 190-193 More about this Journal
Abstract
Viability, early growth and sex ratio of induced gynogenetic diploid bagrid catfish (Leiocassis ussuriensis, Siluriformes) were examined. Survival rates of gynogenetic diploids and normal bi-parental diploids up to 180 days post hatching were not significantly different (P>0.05), and consequently resulted the mean percent survivals of 76% (gynogens) and 78% (bi-parental progeny) at the end of growth trial. Growth in both body weight and total length of gynogenetic diploids was also similar to those of normal diploid controls (P>0.05). Gynogenetic bagrid catfish displayed a similar level of ovarian development when compared to bi-parental diploid females, as judged at 10 weeks post hatching. Sex ratio of bi-parental progeny was normal 1:1 whereas all-femaleness was observed in gynogenetic progeny (P<0.05), suggesting that the genetic sex determination mechanism of this species should be XX-XY based female homogamety.
Keywords
Bagrid catfish (Leiocassis ussuriensis); Early viability and growth; Sex ratio; XX-XY female homogamety;
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Times Cited By KSCI : 5  (Citation Analysis)
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