@inproceedings{fdi:010020348, title = {{A}bsence of marked seasonal variations in sexual maturity of {P}angasius hypophthalmus brooders held in ponds at the {S}ukamandi station ({J}ava, {I}ndonesia)}, author = {{L}egendre, {M}arc and {S}ubagja, {J}. and {S}lembrouck, {J}acques}, editor = {}, language = {{ENG}}, abstract = {{A}n evaluation of the seasonal variations of sexual activity of #{P}. hypophthalmus$ broodstock held in 50 m2 ponds was carried out between {A}pril 1997 and {A}pril 1998 at the {S}ukamandi station ({W}est {J}ava, 6°{S} of latitude). {T}hese 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. {H}igh proportions of fluent males and mature females with post-vitellogenic oocytes of modal diameter superior to 1.00 mm were found at anytime. {A}s 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. {T}his 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. {O}vulation was successfully induced at 3, 2 and 4 months interval in a same #{P}. hypophthalmus$ female. {T}his indicated a quick recovery of oogenesis in females reared in the ponds. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{POISSON} {D}'{EAU} {DOUCE} ; {CYCLE} {DE} {REPRODUCTION} ; {HORMONE} ; {INDUCTION} ; {TEMPERATURE} ; {VARIATION} {SAISONNIERE} ; {PISCICULTURE} ; {METHODE} {D}'{ELEVAGE} ; {ETUDE} {EXPERIMENTALE} ; {INDONESIE} ; {JAWA} ; {SUKAMANDI} {STATION}}, numero = {}, pages = {91--96}, booktitle = {{T}he biological diversity and aquaculture of clariid and {P}angasiid catfishes in {S}outh-{E}ast {A}sia : proceedings of the mid-term workshop of the "{C}atfish {A}sia project"}, year = {1998}, URL = {https://www.documentation.ird.fr/hor/fdi:010020348}, }