胶州湾及其邻近水域渔业生物多样性的调查研究

Biodiversity Investigation in Jiaozhou Bay and Neighbouring Waters

根据 2 0 0 3年 10月～ 2 0 0 4年 5月逐月采集胶州湾及其邻近水域作业的定置网和底拖网具渔获物的分析与测定 ,记述了该海区出现的 10 6种渔业生物 ,并进行了定置网和底拖网的渔获物组成的比较 ,分析了种类组成特点及生物多样性的季节变化情况。结果表明 ,本调查区域渔获物以小型低值鱼类、经济无脊椎动物和经济幼鱼为主 ,渔获个体偏小。据此提出了保护近海生物多样性与合理利用近海渔业资源的一些建议。本次调查还首次记录了我国黄海沿岸罕见的蛇鳗科鱼类 长吻沙蛇鳗Ophisurusmacrorhynchus ,为青岛近海的渔业生物多样性的研究增添了新的资料。

The paper is based on the setnet and bottom trawl catch data in Jiaozhou Bay and its neighbouring waters from October, 2003 to May, 2004. There were 104 species recorded. The catch composition of the two types of fishing gear were compared, the seasonal variations of biodiversity were analyzed. The results showed that the catches in the study area consisted of juveniles of commercial fishes, small low-value fishes, and commercial invertebrates. The fish sizes were generally small. On the basis of the results, we made some suggestions to conserve the near-shore biodiversity and to rationally utilize the coastal fishery resources. This study also recorded the presence of the O.m. in the setnet, which is rare in the coastal waters in the Yellow Sea. This adds new material to the fishery biodiversity study in Jiaozhou Bay and neighbouring waters.