Paper published in a book (Scientific congresses and symposiums)
Behavioural and endocrine study of Oreochromis aureus, with special reference to sex-reversed males. In Proceedings of the Fifth International Symposium on the Reproductive Physiology of Fish
Oreochromis aureus; sex-reversal, pseudo-female; hormone profile, social status
Abstract :
[en] The relationship between social status and hormonal profiles (T, E2,11-KT, T3 and 74) was analysed in normal tilapias Oreochromis aureus. Dominant females and dominant males exhibited respectively T and 11-KT plasma level higher than subordinate fish of the same sex.Moreover, the behaviors of females and 17a-ethynylestradiol sex-reversed males (pseudo-females) were studied in mixed pairs or assemblages (4,6 or 8 fish in 500l and 10 fish in 100 l). The results suggested that pseudofemales were more aggressive and dominant that females. Activity rhythms were similar in females and pseudo females.
Poncin, Pascal ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Ovidio, Michaël ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Démographie des poissons et hydroécologie
Philippart, Jean-Claude ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Ruwet, Jean-Claude
Language :
English
Title :
Behavioural and endocrine study of Oreochromis aureus, with special reference to sex-reversed males. In Proceedings of the Fifth International Symposium on the Reproductive Physiology of Fish
Publication date :
July 1995
Event name :
Fifth International Symposium on the Reproductive Physiology of Fish
Event organizer :
The University of Texas
Event place :
Austin, Texas, United States
Event date :
2-8 Juillet 1995
Audience :
International
Main work title :
Proceedings of the Fifth Interrnational Symposium on the Reproductive Physiology of Fish
