【摘要】 本文报道黑龙江流域珍稀经济鱼类乌苏里白鲑生殖群体生态学。1994年秋季对黑龙江抚远江段洄游的乌里白鲑生殖群体的体长、体重组成、年龄组成、肥满度、成熟系数、生殖力、摄食等群体生态学特征进行研究,并提出其资源保护的措施。更多还原

【Abstract】 This article reports the population ecological characters of Coregonus ussurinsts Berg,a special commercial fish in Amur River valley. A investigation has been donewith the fish population,including its ford length, body weight,age,growth plumpness Fecunelity,muturation coefficient and eatiny. Risponce protecting and increasing methods have been proved.更多还原