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1993年夏季白令海狭鳕资源调查期间,作者等应用声学/拖网评估调查方法,首次发现阿留申海盆区有大量当年生狭鳕幼鱼分布。研究结果表明:(1)当年生幼鱼主要分布在海盆区东北部,密集区位于东白令海陆架斜坡与公海区之间,呈西北东南走向;(2)鱼群主要栖息于中上层80—120米处,有明显的昼夜垂直移动现象;(3)7月份海盆区东北部幼鱼鱼体长度为29—47毫米,而南部波哥斯洛夫岛附近的鱼体长度仅为11—17毫米,系两个不同产卵期鱼群的子代;(4)幼鱼主要栖息层的水温为3—5℃,盐度为32.9—33.1,其分布与陆架斜坡地理环境和饵料生物关系较密切。
During the summer 1993 Bering Sea pollock resource survey, the authors used acoustical / trawl assessment surveys and found for the first time a large number of perennials in the Aleutian Basin. The results show that: (1) The juveniles are mainly distributed in the northeast of the basin, and the dense area is located between the shelf slope of the East Bering Sea and the sea area, -120 m, there is a clear vertical movement of day and night; (3) July juvenile fish in the northeastern basin length of 29-47 mm, while the fish near the island of Bogoslov in the south of the length of only 11- 17 mm, representing the offspring of two fish populations of different spawning periods; (4) The temperature of the main habitat of juvenile fish is 3-5 ° C and the salinity is 32.9-33.1, And food organisms more closely related.