台湾海峡及其邻近海域中华哲水蚤的分布和繁殖

DISTRIBUTION AND REPRODUCTION OF CALANUS SINICUS IN TAIWAN STRAIT AND ITS ADJACENT SEA AREAS

中华哲水蚤(Calanus sinicus Brodsky)是我国近海的优势桡足类。它的数量大,分布广。特别在冬、春季,在我国近海浮游动物中,占有相当大的比例;同时它的个体也较大,是滤食性种类。因其在海洋生态系统的物质循环和能量流动中,起着相当的作用,所以被国家自然科学基金重大项目——“东、黄海生态系统动力学与生物资源可持续利用”

Based on the history materies of Calanus sinicus in Taiwan Strait and its Adjacent sea areas, the distribution and reproduction of C. sinicus were researched. The results show that C. sinicus distributed all year round, in north and middle parts of Taiwan Strait, but seasonally in south part of Taiwan Strait and Xiamen Harbour. The number of C. sinicus in these regions attainted its great maximum in spring. Secondary maximum in winter, and mininum in autumn even disappeared. The abundance of C. sinicus is more near shore than off shore, more in the north than in the south in horizontal distribution. C. sinicus distribute from bottom layers to surface layers, but its adults live in bottom layers in summer and in upper layers up 35m in winter. Diurnal vertical migration of C. sinicus is marked. There were three main breeding period(i.e.3 generations) in Taiwan Strait and Xiamen harbour. The relative questions were discussed in this paper.