@article{fdi:40994,
  title = {{S}easonal changes in sexual maturity and fecundity, and {HCG}-induced breeding of the catfish, {H}eterobranchus longifilis val. (claridae), reared in {E}brie {L}agoon ({I}vory {C}oast)},
  author = {{L}egendre, {M}arc},
  editor = {},
  language = {{ENG}},
  abstract = {{O}ocyte maturation and ovulation were induced with human chorionic gonadotropin ({HCG}) in the {A}frican catfish, #{H}eterobranchus longifilis$. {F}emales with a mean oocyte diameter of at least 1.1 mm were used. 100 % ovulation was obtained after a single intramuscular {HCG} injection of between 1.0 and 2.5 {I}.{U}./g body weight ; a lower dose led to high variability in individual response. {L}atency time depended more on temperature than on the hormone dose. {E}ggs could be stripped within 14 h of a dose of 1.5 {I}.{U}./g of {HCG}, at a temperature of 27° to 29° {C}. {A}fter stripping, most of the eggs were fertilized, and high percentages of normal larvae (76 % = 8) were obtained after hatching. {F}ish hatched in captivity and becoming sexually mature at 1 year of age (mean weight 1.5 kg) were, in turn, artificially reproduced. {S}easonal changes in oocyte diameter (determined by periodic intraovarian biopsy of brooders reared in lagoon enclosures) showed a clear decrease in sexual activity at the beginning of the dry season ({D}ecember) which seemed to be related to higher water temperature. {H}owever, even at that time, good quality eggs were obtained after {HCG} injection. {T}hus, eggs and fry could be produced all year round, although the mean quantity of eggs collected per female kg proved to be much less at the beginning of the dry season (26 000 = 14 000) than during the rainy season (68 000 = 13 000). ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{EXPERIMENTATION} ; {REPRODUCTION} ; {GENITEUR} ; {MATURITE} {SEXUELLE} ; {FECONDITE} ; {VARIATION} {SAISONNIERE} ; {ANALYSE} {QUANTITATIVE} ; {SELECTION} ; {AQUACULTURE} ; {POISSON} {CHAT} ; {COTE} {D}'{IVOIRE} ; {EBRIE} {LAGUNE}},
  booktitle = {},
  journal = {{A}quaculture},
  volume = {55},
  numero = {},
  pages = {201--213},
  ISSN = {0044-8486},
  year = {1986},
  DOI = {10.1016/0044-8486(86)90115-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:40994},
}