Publications des scientifiques de l'IRD

Legendre Marc, Subagja J., Slembrouck Jacques. (1998). Absence of marked seasonal variations in sexual maturity of Pangasius hypophthalmus brooders held in ponds at the Sukamandi station (Java, Indonesia). In : Legendre Marc (ed.), Pariselle Antoine (ed.). The biological diversity and aquaculture of clariid and Pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project". Jakarta (IDN) ; Can Tho : IRD ; Can Tho University, p. 91-96. Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15.

Titre du document
Absence of marked seasonal variations in sexual maturity of Pangasius hypophthalmus brooders held in ponds at the Sukamandi station (Java, Indonesia)
Année de publication
1998
Type de document
Colloque
Auteurs
Legendre Marc, Subagja J., Slembrouck Jacques
In
Legendre Marc (ed.), Pariselle Antoine (ed.), The biological diversity and aquaculture of clariid and Pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project"
Source
Jakarta (IDN) ; Can Tho : IRD ; Can Tho University, 1998, p. 91-96
Colloque
Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15
An evaluation of the seasonal variations of sexual activity of P. hypophthalmus broodstock held in 50 m2 ponds was carried out between April 1997 and April 1998 at the Sukamandi station (West Java, 6°S of latitude). These variations were assessed through the evolution of oocyte diameter of individual females, the proportion of fluent males and the success of hormonal-induced breeding trials. High proportions of fluent males and mature females with post-vitellogenic oocytes of modal diameter superior to 1.00 mm were found at anytime. As a consequence, successful induced breeding of this species using hormonal treatments could be performed regardless of season and allowed an all year long production of fry. This continuous sexual maturity of P. hypophthalmus broodstock, during both the dry and rainy seasons, may have resulted to a large extent from rather stable conditions, with a monthly mean water temperature constantly high (28-31°C) and a low variation of day length during the year. Ovulation was successfully induced at 3, 2 and 4 months interval in a same P. hypophthalmus female. This indicated a quick recovery of oogenesis in females reared in the ponds. (Résumé d'auteur)
Plan de classement
Aquaculture [040AQUAC]
Descripteurs
POISSON D'EAU DOUCE ; CYCLE DE REPRODUCTION ; HORMONE ; INDUCTION ; TEMPERATURE ; VARIATION SAISONNIERE ; PISCICULTURE ; METHODE D'ELEVAGE ; ETUDE EXPERIMENTALE
Description Géographique
INDONESIE ; JAWA
Localisation
Fonds IRD [F A010020339] ; Montpellier (Centre IRD)
Identifiant IRD
fdi:010020348
Contact