黄海南部小黄鱼Pseudosciaena plyactis(Bleeker)渔获群体结构与繁殖特征的初步研究  

STUDY ON THE POPULATION STRUCTURE AND REPRODUCTION OF PSEUDOSCIAENA PLYACTIS IN SOUTHERN YELLOW SEA

作　　者：任一平[1] 高天翔[1] 刘群[1] 薛莹 

机构地区：[1]青岛海洋大学水产学院,青岛266003

出　　处：《海洋湖沼通报》2001年第1期41-46,共6页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金课题!(39770584号;39970578号)共同资助。

摘　　要：本文对黄海南部小黄鱼繁殖群体进行了常规生物学测定。研究分析了体长组成和体重 组成、体长和体重关系、性比的变化、怀卵量及性腺的发育情况。总样品的性比组成为雌： 雄=1:2.7，且雄鱼比例逐月上升；测算其怀卵量在2686—34704粒之间，平均怀卵量为9518 粒；性成熟系数3月中旬为116‰，4月中旬最高为210‰，5月上旬为114‰，5月下旬只有33 ‰；绝对繁殖力（F）与体重（W）的关系式为：F=549.37W－4861.7（R=0.917）。The general biological characters of Pseudosciaenaplyactis in Southern Yellow Sea were studied in this paper. The composition of Pseudosciaenaplyactisacco rding to length and weight were analysed.At the same time the relationship bet ween length and weight were analyzed.Also, the variety of sexual ratio, egg qu antity and sex gland were studied.The sexual ratio of all samples was: female: male=1:1.27 . The proportion of male was increasing month by month. The number o f eggs was 2686-34704. The average number was 9518, and the coefficientof sexu al mature is 116‰ in the middle of March, 210‰ in the middle of April，114‰ i n the first ten-day of May，only 33‰ in the last ten-day of May；the relationsh ipbetween fecundity and weight was: F=549.37W－4861.7 (R=0.917).

关 键 词：小黄鱼 群体结构 繁殖群体 体长体重 性比 怀卵量 性腺 

分 类 号：S965.323[农业科学—水产养殖] Q346.1[农业科学—水产科学]