Article (Scientific journals)
Study of sex ratio in progeny of a complex Oreochromis hybrid, the Florida red tilapia
Desprez, D.; Briand, C.; Hoareau, M. C. et al.
2006In Aquaculture, 251 (2-4), p. 231-237
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Keywords :
sex-ratio; sex determination; Oreochromis; tilapia; Florida red tilapia
Abstract :
[en] This paper reports a study on the progeny sex-ratio distribution in the Florida red tilapia. This hybrid originated as a cross between O. mossambicus male and O. urolepis hornorum female, which was then crossed with 0. niloticus and 0. aureus in order to improve its growth rate and its resistance to low temperature. We have studied the sex-ratio of I I I progenies from 46 females and 12 males, where the male percentage varied between 5% to 89%. The analysis of distribution showed three groups characterised by a mean male percentage of 26.7 +/- 9.81; 50.0 +/- 8.9 and 70.3 +/- 5.5%. The stability of sex ratios in repeated single pair matings and the parental influence on progeny sex ratios obtained are in agreement with a polygenic basis of sex determination in this complex hybrid. (c) 2005 Elsevier B.V. All rights reserved.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Desprez, D.
Briand, C.
Hoareau, M. C.
Mélard, Charles ;  Université de Liège - ULiège > Centre de formation et de recherche en aquaculture (CEFRA)
Bosc, P.
Baroiller, J. F.
Language :
English
Title :
Study of sex ratio in progeny of a complex Oreochromis hybrid, the Florida red tilapia
Publication date :
28 February 2006
Journal title :
Aquaculture
ISSN :
0044-8486
eISSN :
1873-5622
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
251
Issue :
2-4
Pages :
231-237
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 December 2010

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