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根据1997-2000年东海23°30′~33°N、118°30′~128°E海域4个季节海洋调查资料,对东海浮游十足类优势种的生态特征进行了研究,探讨这些优势种对环境的适应及与渔场的关系。结果表明:主要优势种有中型莹虾Lucifer intermedius、刷状莹虾Lucifer penicillifer、细螯虾Leptochela gracilis和汉森莹虾Lucifer hanseni。前2个优势种是近海暖水种,细螯虾是广温高盐种,汉森莹虾是外海暖水种。近海暖水种不但平均丰度高,而且优势度和占浮游十足类总丰度的百分比均大于其它优势种。广温高盐优势种具有较高的出现率,细鳌虾丰度不高,但在每个季节、各个海区均有出现。在夏季,低温环境适应力差的暖水种往往有很高的聚集强度。与东海其它类群的浮游动物不同,浮游十足类以夏季丰度最大。就个体数量而言,以近海暖水种个体居多,主要分布在位于东海沿岸河口附近的鱼类产卵场。
According to the data of four seasons in the East China Sea from 23 ° 30 ’to 33 ° N and 118 ° 30’ ~ 128 ° E from 1997 to 2000, the ecological characteristics of dominant species of planktonic species in the East China Sea were studied. The effects of these dominant species Environmental Adaptation and Its Relationship with Fisheries. The results showed that the main dominant species were Lucifer intermedius, Lucifer penicillifer, Leptochela gracilis and Lucifer hanseni. The first two dominant species are the warm-water species in the sea, the crayfish is a wide temperature and high salt species, Hansen Ying shrimp is a warm water species. The average abundance of offshore warm water species is not only high, but also the dominance and the percentage of total abundance of the total species of the planktonic species are greater than other dominant species. The dominant species of high temperature and high salinity have a high occurrence rate, while the abundance of fine crayfish is not high. However, in each season, all the sea areas appear. In summer, warm water species with poor adaptability at low temperature tend to have very high aggregation intensity. Unlike other groups in the East China Sea, zooplankton is the most abundant in the summer. In terms of the number of individuals, individuals with near-shore warm water species are predominant and are mainly located in the fish spawning grounds near the mouth of the East China Sea.