Trends in Abundance and Biological Characteristics of Chum Salmon
Trends in Abundance and Biological Characteristics of Chum Salmon
复制标题
鲑鱼数量和生物学特性的趋势
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Alley
中科院分区：
文献类型：
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作者：
M. Fukuwaka;T. Azumaya;T. Nagasawa;A. N. Starovoytov;J. Helle;Toshihiko Saito;E. Hasegawa;S. Alley
鲑鱼是北太平洋第二丰富的鲑鱼。 20 世纪 30 年代，俄罗斯海岸和不列颠哥伦比亚省盛产鲑鱼。从 20 世纪 40 年代末到 1970 年代，鲑鱼的总捕获量很小，但在 1980 年代有所增加，从 1990 年代至今达到历史最高水平。鲑鱼的海洋分布受海面温度的影响。海洋生长和成熟鱼类的大小在 20 世纪 70 年代和 1980 年代有所下降，但在 1990 年代和 2000 年代有所恢复。这些丰度和生物特征的趋势与海洋条件相关。北太平洋溯河鱼类委员会进行的一项国际鲑鱼合作调查可能会阐明这些趋势之间关系的潜在机制。为了保护和可持续利用鲑鱼种群，我们应该监测海洋和河流中鲑鱼的丰度和生物特征。
Chum salmon are the second most abundant salmon in the North Pacific Ocean. In the 1930s, chum salmon were abundant along the Russian coast and in British Columbia. The total catch of chum salmon was small from the late 1940s into the 1970s but increased in the 1980s, reaching historically high levels from the 1990s to the present. Ocean distribution of chum salmon is affected by sea surface temperature. Ocean growth and fish size at maturity decreased in the 1970s and 1980s but recovered in the 1990s and 2000s. These trends in abundance and biological characteristics correlated with ocean conditions. An international cooperative salmon survey by the North Pacific Anadromous Fish Commission may elucidate the mechanisms underlying the relation - ships among these trends. For conservation and sustainable use of chum salmon stocks, we should monitor the abundance and biological characteristics of chum salmon both in the ocean and in rivers.