2006年北太平洋柔鱼作业渔场时空变化及其与表温的关系

<正>柔鱼(Ommastrephes bartramii)广泛分布在北太平洋,20世纪70年代初首先由日本鱿钓船开发,我国大陆于1993年开始利用该资源,1994年进行较大规模地商业性生产。目前北太平洋鱿钓渔业已成为我国远洋渔业的支柱1]。据估计,历史上北太平洋柔

Catch Distribution of Ommastrephes batramii and its Relationship with Sea Surface Temperature in the North Pacific Ocean in 2006

Ommastrephes bartramii is one of the important fishing targets in the Chinese squid jigging fishery, It plays a significant realistic role and has practical value to study the spatio-temporal distribution of fishing ground and its relationship with sea surface temperature (SST). Based on the catch data from Chinese squid jigging vessels in the North Pacific Ocean from May to November in 2006, the production and catch per day distribution and their relationship with SST with the format of 1° latitude by 1° longitude were analyzed by software of marine GIS. The results indicated that the catch were mainly concentrated in the waters near 39°N～42°N,170～172°E in June, and the SST ranged from 14 to 15 ℃. The catch were mainly concentrated in the waters near 40°N～42°N,159°E～161°E, and the SST ranged from 14 ℃ to 15 ℃ in July. From August to November, the catch were mainly concentrated in the waters near 41°N～44°N,151°E～156°E, and the optimum SST was 17～18 ℃ in August, 15～16 ℃ in September, 13～14 ℃ in October, and 11～13 ℃ in November. The K-S test indicated that there had a significant relationship between SST and daily catch (P<0.05).