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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, 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.

Fichier PDF disponiblehttp://horizon.documentation.ird.fr/exl-doc/pleins_textes/doc34-08/010020348.pdf[ PDF Link ]

Titre
Absence of marked seasonal variations in sexual maturity of Pangasius hypophthalmus brooders held in ponds at the Sukamandi station (Java, Indonesia)
Année de publication1998
Type de documentColloque
AuteursLegendre Marc, Subagja J., Slembrouck Jacques.
InLegendre 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"
SourceJakarta (IDN) ; Can Tho : IRD ; Can Tho University, 1998, p. 91-96.
ColloqueCharacterisation, 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
RésuméAn 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 classementAquaculture [040AQUAC]
DescripteursPOISSON D'EAU DOUCE ; CYCLE DE REPRODUCTION ; HORMONE ; INDUCTION ; TEMPERATURE ; VARIATION SAISONNIERE ; PISCICULTURE ; METHODE D'ELEVAGE ; ETUDE EXPERIMENTALE
Descr. géo.INDONESIE ; JAWA ; SUKAMANDI STATION
LocalisationFonds IRD [F A010020339] ; Montpellier (Centre IRD)
Identifiant IRDfdi:010020348
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010020348

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