【作者】 刘德经； 谢开恩；

【Author】 LIU De-Jing~① XIE Kai-En~② (①Zhanggang Sea Clam Breeding Farm, Changle 350209; ②Fisheries Research Institute of Fujian,Xiamen 361012,China)

【机构】 福建省长乐市漳港海蚌场； 福建省水产研究所；

【摘要】 对福建省长乐沿海的西施舌繁殖生物学研究结果表明,年满一龄的西施舌开始性发育,生物学最小型为壳长46．5 mm,壳高37 mm,体重18．3 g。性比率与个体大小有关,存在雄性先熟和雌雄同体的现象。体长91～132 mm,个体绝对平均排卵量为429～317万粒/个,个体相对平均排卵量为2．648～1．210 万粒/g。性腺发育丰满度指数(R)在2～6月间,随着水温上升而递增。成熟期为4月中旬～6月中旬, 水温16．5～26．3℃；生殖期为5月上旬～7月下旬,水温21．8～28．6℃。西施舌的禁捕期应确定为4～7 月份。更多还原

【Abstract】 This paper describes the reproductive biology of Coelomactra antiquata which abounds in Fujian coastal waters.The results show that:Coelomactra antiquata require a full year to reach se- xual maturity.The smallest sized individuals are 46.5 mm long,37 mm high and weigh 18.3 g.The sex ratio is relative to individual body size;males mature first.The propagative period is the first ten-days of February to the first ten-days of March.Water temperature is 11.8-14.5℃.Growth period:the middle ten-day period of March to the middle ten-day period of April;water temperature is 15.8-18.2℃.Maturation period:the middle ten-day periond of April to the middle ten-day pe- riod of June,water temperature is 16.5-26.3℃.Reproductive period:the first ten-days of May to the last ten-days of July;water temperature is 21.8-28.6℃.Resting period:the first ten-days of August to the last ten-days of January;the water temperature is 29.3-9℃.更多还原