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首页> 外文期刊>Journal of Ichthyology >Dynamics of the abundance and conditions of reproduction of mass species of pacific salmons ( Oncorhynchus) on the northwestern coast of Sakhalin
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Dynamics of the abundance and conditions of reproduction of mass species of pacific salmons ( Oncorhynchus) on the northwestern coast of Sakhalin

机译：萨哈林西北海岸群岛群岛群体繁殖群体繁殖的丰富和繁殖条件的动态及其繁殖条件

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AbstractThe efficiency of reproduction of Pacific salmons of the genusOncorhynchusin the rivers of the northwestern coast of Sakhalin Island is characterized on the basis of long-term data (1989?2014). Differences between the rivers in the northern and southern parts of the region under study have been revealed with respect to the channel type, faunistic composition of the aquatic biota, and prevailing species of salmons. A high spawning efficiency of pink salmonO. gorbuscha, high densities of filling of spawning grounds, and a relatively poor composition of the freshwater ichthyofauna have been recorded in the rivers of the northern part with the mountain–piedmont type of channel. Varied fish population and the high spawning efficiency of chum salmonO. ketahave been recorded in the rivers of the southern part with the mainly lowland channel. The salmon spawning area in the rivers of the northern and southern parts has been estimated. The data on the dynamics of the abundance of salmons on the northwestern coast of Sakhalin are given. The total value of the passage of spawners to the rivers of northwestern Sakhalin that is required for effective reproduction has been estimated, ranging from 0.672 to 1.639 million specimens for pink salmon and approximately 0.43 million specimens for chum salmon.]]>
机译： o。 Gorbuscha ，高密度填充产卵场，北部北部河流的河流河流河河河河河河河河河的较高密度。各种鱼类种群和高鲑鱼的高产卵效率<重点型=“斜体”> o。 Keta 已被南部的河流中记录，主要是低地渠道。估计了北部和南部围系的河流中的三文鱼产卵区。给出了Sakhalin西北海岸丰富的鲑鱼丰富的动态数据。估计粉红色三文鱼所需的西北萨哈林西北萨哈林河河流的总价值，从0.672〜1.639百万标本和大约4300万型鲑鱼样本。]>

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