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根据2004年7~11月“中远渔1号”调查船北太平洋公海秋刀鱼渔场探捕调查的生产情况,对秋刀鱼渔场进行分析。结果发现:①秋刀鱼渔场可根据渔场位置分为北部渔场和南部渔场,北部渔场范围为44°~45°N、156°~158°E,南部渔场范围为41°~42°N、150°~151°E,南部渔场的分布范围小于北部渔场。②秋刀鱼的生产以11月份生产最好,平均日产量达22.7t,其中最高日产量为60.42t;8月份的秋刀鱼生产最差,平均日产量为2.95t,与2003年的12.05t反差较大,主要是由于受到渔场环境因子变化的影响,鱼发位置偏至俄罗斯专属经济区内的缘故。③秋刀鱼舷提网作业平均日放网次数达7.6次,最高1天放网次数达到16次,而最高网次产量为11.05t。④秋刀鱼渔获组成以中小型鱼为主,占80%以上,除7月份渔获中特大型秋刀鱼占有较大比例外,其余月份很少有特大级秋刀鱼。⑤在相近的渔场位置,秋刀鱼个体随着生产月份的推迟,鱼体呈变小的趋势。
According to the investigation of the investigation on the fishing ground of Pacific saury of the Pacific North Pacific from July to November 2004, the fishing ground of saury is analyzed. The results are as follows: (1) The saury can be divided into the northern fishery and the southern fishery according to the fishing grounds. The fishing ground in the north ranges from 44 ° to 45 ° N and from 156 ° to 158 ° E. The southern fish range ranges from 41 ° to 42 ° N and 150 ° ~ 151 ° E. The distribution of southern fishery is less than that of northern fishery. ② saury production to produce the best in November, the average daily output of 22.7t, of which the highest daily output of 60.42t; saury production in August was the worst, the average daily output of 2.95t, and 12.05t in 2003 contrast Larger, mainly due to changes in fisheries environmental factors, the fish hair position offset to the sake of the Russian exclusive economic zone. (3) The average daily number of net jobs of saury fishing net was 7.6 times, the maximum number of net meals per day reached 16 times, and the highest net production was 11.05 tons. ④ The saury catches are dominated by small and medium sized fish, accounting for more than 80%. Except for the large proportion of large saury caught in July, there are very few saury saury in other months. ⑤In the similar fishery location, saury individuals with the production of the month postponed, the fish showed a smaller trend.