Amenzoui Khadija, Ferhan-Tachinante Fatima, Yahyaoui Ahmed, Kifani Souad, Mesfioui Abdel Hakim
Institut national de recherche halieutique, 2, rue de Tiznit, Casablanca, Morocco.
C R Biol. 2006 Nov;329(11):892-901. doi: 10.1016/j.crvi.2006.08.002. Epub 2006 Sep 18.
This work focuses on aspects of reproductive biology of Sardina pilchardus from the Atlantic coast of Morocco. The mean values of batch fecundity estimated for the species is 23150(+/-1301) oocytes for a mean size of 19.5(+/-0.49) cm, the mean relative fecundity being 346(+/-7.34) oocytes per gram of female without ovary. Batch fecundity increases with total length and body weight without ovary. Sizes at first sexual maturity (L50) are reached for males and females at 15.8(+/-0.29) cm and 15.8(+/-0.35) cm, respectively. The spawning period for the population extends between October and July and the spawning peak occurs from October to February. However, the small sardines (14.5-17 cm) in their first reproduction spawn between November and June, whereas larger fish (17.5-25 cm) spawn between October and July. The factor of condition (K) increased in summer during the sexual resting phase. It is weak in winter during the period of reproduction. Regarding, the sex ratio, there was no significant difference in the number of males and females.
这项工作聚焦于摩洛哥大西洋沿岸沙丁鱼的生殖生物学方面。该物种估算的分批产卵量平均值为23150（±1301）个卵母细胞，平均体长为19.5（±0.49）厘米，平均相对产卵量为每克去卵巢雌鱼346（±7.34）个卵母细胞。分批产卵量随着去卵巢后的全长和体重增加而增加。雄鱼和雌鱼首次性成熟时的体长（L50）分别为15.8（±0.29）厘米和15.8（±0.35）厘米。该种群的产卵期在10月至7月之间，产卵高峰期在10月至2月。然而，初次繁殖的小沙丁鱼（14.5 - 17厘米）在11月至6月产卵，而较大的鱼（17.5 - 25厘米）在10月至7月产卵。在夏季性休止期，丰满度系数（K）增加。在冬季繁殖期，丰满度系数较低。关于性别比例，雄鱼和雌鱼的数量没有显著差异。
