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L'inversion hormonale du sexe chez Oreochromis aureus (génotype mâle ZZ et génotype femelle ZW) avec un œstrogène (1717α-éthynylœstradiol) conduit à l'obtention de pseudofemelles, caractérisées par un genotype mâle (ZZ). Le croisement de ces pseudofemelles avec des mâles (ZZ)...Contributeur (s):
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17α-ethynylestradiol sex-reversed males of Oreochromis aureus (pseudofemales, ΔF, genotype ZZ) are used in aquaculture to produce a male monosex population by crossing with ZZ homogametic normal males. When placed with males (M) and females (F) in the same spawning tank, the spawning rate...Contributeur (s):
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Carole Rougeot / Laurent Minet / Christian Prignon / Alain Vanderplasschen / Bruno Detry / Pierre-Paul Pastoret / Charles MélardIn Eurasian perch (Perca fluviatilis), females grow significantly faster than males. Moreover, gonadal development has a significant negative impact on somatic growth and fillet yield. In order to induce sterility, triploidy induction was attempted by subjecting fertilised eggs to heat...Contributeur (s):
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Sibling juvenile vundu Heterobranchus longifilis reared at 27 ± 1 °C under 12L:12D were fed during the day, at night or over the entire 24-h cycle, for periods of 14-15 d. Nighttime feeding gave the highest growth rates, best feed conversion, lowest mortality, fewest losses due to...Contributeur (s):