摘要
1997～2000年在南海北部湾渔场调查中搜集了49种鱼,共计2080尾.对其食性分析,并依其食料生物的生态类群以及消化器官特点,将其划分为5种食性类型:浮游生物食性、底栖生物食性、游泳动物食性、浮游生物兼底栖生物食性、底栖生物兼游泳动物食性.根据食物网中各营养级的相互关系,初步将这49种鱼划分为3个营养级:(1)草食性动物和杂食性动物,营养级分别为1.0～1.3级和1.4～1.9级.(2)低级肉食性动物和中级肉食性动物,营养级分别为2.0～2.8级和2.9～3.4级.其中,属于低级肉食性营养级的种类数量最多,共有30种;属于中级肉食性营养级的种类较少,共有12种.(3)高级肉食性动物,营养级为3.5～4.0级.属于该营养级的种类数量最少,只有7种.
During 1997- 2000, 2 080 individuals of fishes were collected, which belonged to 49 species on the fishing ground of the Beibu Gulf in the South China Sea. Based on the analysis of fish food habits, food biological ecological groups and the characteristics of digesting organs, their digestive organ feeder were divided into five kinds of food habits： plankton feeding, benthos feeding, swimming-animal feeding, both plankton and benthos feeding, and both benthos and swimming animal feeding. According to relations among nutrient levels in food web, the 49 species of fishes were divided into three nutrient levels： （1） Herbivorous and mixed feeding animal, the nutrient levels of which were 1.0 - 1.3 and 1.4 - 1.9, respectively. （2） Carnivores of low and middle classes of animals, the nutrient levels of which were 2.0 - 2.8 and 2.9- 3.4, respectively. And the species belonging to low class of carnivores had the most numbers （30 species）, and the species numbers of middle class was less （12 species） . （3） Carnivores for high class animals, the nutrient level of which was 3.9 - 4.0. The species numbers of this level was the least （7 species）.
出处
《中国水产科学》
CAS
CSCD
北大核心
2005年第5期621-631,共11页
Journal of Fishery Sciences of China
基金
广东省自然科学基金项目(04001263)
重点渔业水域生物资源动态监测
国家海洋勘测专项资助项目
关键词
北部湾
南海
鱼类
食物网
Beibu Gulf
the South China Sea
fish
foods web
