【摘要】 3种大麻哈鱼的洄游期、种群组成、数量变动等进行了调查研究。结果认为:溯河期依每年河流生态条件而有变化;驼背大麻哈鱼为单一龄组型,马苏大麻哈鱼为双龄组型,大麻哈鱼为多龄组型;其主要产卵场分布于绥芬河中、上游河区,我国河区种群数量较多。更多还原

【Abstract】 The upper and middle reaches of Suifenhe River is salmons spawning ground in Heilongjiang Province. There are three species of salmon. In this paper their population ecological characters are discussed, which might provide us scientific basis for exploitation and utilization of these fishes resource in Suifenhe River.更多还原