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根据2003年9-11月在印度洋西北海域鸢乌贼资源的探捕生产情况,分海区初步分析了海洋环境因子与中心渔场之间的关系。调查表明,10月中下旬中心渔场分布在15°～16°N、61°E附近海域,平均日产均在5t以上。中心作业渔场处在冷水涡的边缘海域,其温盐结构如下:表温为27～29℃,盐度为35.96～36.03,0～100m的温度梯度为0.07℃/m,100～200m的温度梯度为0.04℃/m。100m的水温、盐度范围分别为19.5～23℃、35.70～35.80。各海域的作业渔场,其最适表温不同。在2°N～14°N海域,高产量出现在表温26.4～27.0℃间海域;在14°N～18°N海域,高产量出现在26.7～29.0℃间海域。
According to the exploration and production of Symlectoteuthis oualaniensis from January to November 2003 in the northwestern Indian Ocean, the relationship between marine environmental factors and the central fishery area was primarily analyzed in the sub-sea areas. According to the survey, the central fishing grounds were located in the sea areas between 15 ° and 16 ° N and 61 ° E in late to mid-October. The average daily production was above 5t. The center operating fishery is located in the edge waters of cold water vortex. Its temperature and salinity structure is as follows: the temperature gradient is 27-29 ℃, the salinity is 35.96-36.03, the temperature gradient of 0-100m is 0.07 ℃ / m, the temperature gradient of 100-200m 0.04 ° C / m. 100m water temperature, salinity range 19.5 ~ 23 ℃, 35.70 ~ 35.80. The operating fishing grounds of various seas have different optimum temperatures. In the waters of 2 ° N ~ 14 ° N, the high yields appeared in the sea area between 26.4 and 27.0 ℃ of the surface temperature; in the waters of 14 ° N ~ 18 ° N, the high yields appeared in the waters between 26.7 and 29.0 ° C.