黄渤海区日本枪乌贼渔获量预报方法初探

Preliminary Consideration on the Methods of Forecasting the Catch of Japanese Squid,Lolio japonica,in the Yellow Sea and Bohai Sea

日本枪乌贼(Loligo japonica Steest-rup)在黄渤海区广为分布,渔获物主要胴长组成范围在70～120毫米之间,是一种一年生的广布性近海小型头足类。渔获量在万吨以上,但波动幅度较大。1970～1979年年平均渔获量5万多吨,波动于1.3～10.8万吨之间。其在黄渤海区冬春季底拖网渔业生产中常常以主要渔获种类出现。

Based on the data of fishing statistics and the investigation of biological resources from 1960 to 1984,the catch forecasting equation of Japanese squid,Loligo japonica Steestrup,in the Yellow Sea and Bohai Sea was set up as Y=86939.0118X-14519.4892 (r=0.71) and Y'=66932.1897X^(1.4299)(r=0.74) where X is the relative density of the squid in Shidao fishing ground in December.