秘鲁外海茎柔鱼产量分布及其与表温关系的初步研究

Preliminary study on the catch distribution of Dosidicus gigas and its relationship with sea surface temperature in the offshore waters of Peru

根据2004年1～12月我国鱿钓船在东南太平洋海域茎柔鱼的生产统计和表温数据，按经纬度1°×1°的格式利用Marine Exlporer4．0软件，对其各月产量、平均日产量的分布以及与表温的关系进行分析。结果表明，1～7月产量主要集中在14°～17°S、80°～84°W海域，8～9月在9°～11°S、81°～83°W海域，12月在14°S以南海域。由此判断，作业渔场随月份进行西北-东南方向移动。全年都有较高的平均日产量，主渔汛为5～12月。作业渔场的适宜表温为18～22℃、24～25℃，其结果经过K-S检验。但适宜表温随季节发生变化。

Based on the catch data of D. gigas by Chinese squid jigging vessels in the offshore waters of Peru from Jan. to Dec. in 2004, the catch and catch per day distributions and its relationship with SST with the format of 1° latitude by 1° longitude are analyzed by software Marine Explorer 4.0. The results indicated that the catch mainly concentrated in the waters near 14° - 17° S, 80° - 84° W between January and July, 14° - 17° S, 80° - 84° W between August and September, and the southern waters of 14° S in December. So it is concluded that the fishing ground moved from northwest to southeast from Jan to Dec. The high catch per day was distributed all year and the main fishing season was from May to December. The suitable SST for fishing ground were 18 - 22 ℃ and 24- 25℃, which was tested by K - S method. During the fishing seasons, the suitable temperature changed seasonally.