Item Description

Show full item record

Title: Parental Effects On Sex Ratios In Progeny Of The European Sea Bass (Dicentrarchus Labrax) 
Author: Gorshkov, S.; Meiri, I.; Rosenfeld, H.; Ben-Atia, S.; Lutzki, S.; Peduel, A.; Ron, B.; Skvortzov, A.; Gorshkova, G.; Tandler, A.
Date: 2003
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Gorshkov, S., Meiri, I., Rosenfeld, H., Ben-Atia, S., Lutzki, S., Peduel, A., Ron, B., Skvortzov, A., Gorshkova, G., & Tandler, A. (2003). Parental Effects On Sex Ratios In Progeny Of The European Sea Bass (Dicentrarchus Labrax). The Israeli Journal of Aquaculture - Bamidgeh, 55(4), 265-273.
Abstract: In European sea bass (Dicentrarchus labrax), females grow 20-50% faster than males. Therefore, they are more in demand than males for commercial farming, generating much inter- est in the development of female monosex populations. Whereas most current research focus- es on the influence of temperature on sex determination, the present experiments aimed at studying parental effects on sex ratios in progeny. The study analyzed progeny resulting from a diallel crossing (2 x 2 type or a complete bi-factorial mating design), reflecting both maternal and paternal genetic relatedness among progeny. The proportion of females varied significantly among families (20.7-68.2%). There were significant maternal and paternal effects on the pro- portion of females among the progeny. The effect of the parental interaction on the sex ratio in the progeny was also significant. Parents had a significant effect on total length and body weight. Sexual growth dimorphism, in favor of females, was evident in all the full-sib families and varied significantly between families. Among offspring at 9-9.5 months (68.9±23.7 g), females were 26.6% heavier than males. It is concluded that in addition to temperature manipulation in sea bass, as proposed in earlier studies, selection of parents will probably result in an improved ratio of female to male progeny.
Series/Report No.: The Israeli Journal of Aquaculture - Bamidgeh
Pages/Duration: 9 pages
ISSN: 0792-156X
URI: http://hdl.handle.net/10524/19088
Keywords: Dicentrarchus labrax , dimorphism, parental effects, sexual growth, sex ratio
LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.
Aquaculture--Israel--Periodicals.
Aquaculture--Periodicals.

Item File(s)

Files Size Format View
55_4_Gorshkov.pdf 318.9Kb PDF View/Open

This item appears in the following Collection(s)

Search


Advanced Search

Browse

My Account

Statistics

About