智利外海茎柔鱼生物学特性的初步研究Biological Characteristic of Dosidicus gigas off Chile Waters
刘必林,陈新军,钱卫国
摘要(Abstract)：
根据2007年1月和5～6月我国鱿钓船在智利外海的调查数据,对茎柔鱼生物学特性进行初步分析。结果表明:该地区茎柔鱼胴长范围287～702 mm,优势胴长为380～430 mm,占64.2%;体重范围0.63～11.3 kg,优势体重为0.5～2.0 kg,占75.6%;调查海区渔获个体自西向东、自南往北呈现增大趋势;依据胴长组成推断调查海域可能存在3个群体。生长指数大于3,与秘鲁外海茎柔鱼相近;雌雄性比约为3:1,性腺成熟度以Ⅰ期为主,占92%;摄食等级0～2级为主,约占73%;当地时间00:00后摄食量增大,胃含物以鱿鱼和中上层小型鱼类为主。
关键词(KeyWords)： 茎柔鱼;生物学特性;智利外海
基金项目(Foundation): 国家自然科学基金(NSFC40876090);; 曙光计划跟踪(08GG14);; 农业部智利外海茎柔鱼探捕(科06-65);; 上海市捕捞学重点学科(S30702)资助
作者(Author): 刘必林,陈新军,钱卫国
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