Genetic Stock Identification of Young Chum Salmon in the North Pacific Ocean and Adjacent Seas
Genetic Stock Identification of Young Chum Salmon in the North Pacific Ocean and Adjacent Seas
复制标题
北太平洋及邻近海域幼鲑鱼的遗传资源鉴定
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
N. Davis
中科院分区：
文献类型：
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作者：
S. Urawa;Y. Ueno;Y. Ishida;S. Takagi;G. Winans;N. Davis
利用遗传资源鉴定技术对鄂霍次克海、北太平洋和白令海幼鲑的地理来源进行了研究。我们使用的蛋白质等位酶字符（19个位点），覆盖77个北太平洋沿岸股票的遗传基线。在鄂霍次克海捕获的幼鲑（0.0岁），日本区域股票占主导地位（71%），在10月，但其组成下降到36%，在11月。11月，迁移到千岛群岛以东太平洋沃茨的幼鲑由57%的日本和30%的俄罗斯种群组成。年轻的鲑鱼（年龄0.1）在北太平洋西部冬季捕获的29%日本和65%俄罗斯股票在1月和37%日本和45%俄罗斯股票在2月。夏季，在北太平洋西部和中部捕获的幼鲑鱼（0.1岁）主要来自俄罗斯（59-69%），但在白令海中部（56-57°N，179°W）捕获的幼鲑鱼是日本（41%）、俄罗斯（38%）和阿拉斯加（20%）种群的混合体。这些结果表明，日本鲑鱼幼鱼留在鄂霍次克海从夏季到深秋，越冬在西北太平洋，然后迁移到白令海的夏季。
The geographical origins of young chum salmon (Oncorhynchus keta) captured in the Okhotsk Sea, North Pacific Ocean, and Bering Sea were estimated by genetic stock identification techniques. We used a genetic baseline for protein allozyme characters (19 loci) covering 77 North Pacific rims stocks. Among juvenile chum salmon (age 0.0) caught in the Okhotsk Sea, the Japanese regional stock was predominant (71%) in October, but its composition decreased to 36% in November. Juvenile chum salmon migrating to Pacific waters east of the Kuril Islands in November were composed of 57% Japanese and 30% Russian stocks. Young chum salmon (age 0.1) caught in winter in the western North Pacific Ocean consisted of 29% Japanese and 65% Russian stocks in January and 37% Japanese and 45% Russian stocks in February. In summer, young chum salmon (age 0.1) caught in the western and central North Pacific Ocean were predominately of Russian origin (59-69%), but young chum salmon caught in the central Bering Sea (56-57°N, 179°W) were a mixture of Japanese (41%), Russian (38%), and Alaskan (20%) stocks. These results suggest that Japanese chum salmon juveniles remain in the Okhotsk Sea from summer to late autumn, over-winter in the western North Pacific Ocean, and then migrate into the Bering Sea by summer.