摘要
根据北部湾广西沿岸四个季度月大面站调查资料,分忻了毛颚类种类组成和季节更替、总数量和优势种数量的分布和变动等特点,以及毛颚类与水温、盐度、水系、海流和食物的关系。该海区毛颚类共7种,组成特点为热带沿岸性,季节更替不明显;总平均数量为30.59个/m^3,通常109°E以西海区数量高于以东海区,河口和港内数量较少,饵料量是影响总数量平面分布的主因;总数量季节变动以10月为高峰。
By analyses and comparison of data gained in investigations at the coast of Guangxi from four months in various seasons, we have come to the following conclusions: 1 . There are 7 species of Chaetognath at the coast which main composition feature is of the tropical coast nature. The seasonal composition of Chaetognath species is not evident; 2. Annual average amount of Chaetog-nath is 30.59/m3, and variation feature for monthly average amount of Chaetognath is of single periodicity, being highest in October; 3. Plane distribution quantity of Chaetognath in different months is similar in 2 aspects:the east andwest region-separated by 109°E-have respectivaly a quantity gatheringcenter, and definite distribution quantity trend. In the west region quantity is higher than in the east. Quantity in the harbour and estuary is quite lower, and the quantity of feed is the main factor affecting the Chaetognath's plane distribution.
出处
《热带海洋》
CSCD
1989年第4期39-45,共7页
