摘要
提出１９８７年５月至１０月在黄岛养虾池对虾生长周期内对小型底栖动物数量逐月调查。指出：小型底栖动物总平均密度为１０９２．４ｉｎｄｓ·１０ｃｍ－２，自由生活海洋线虫和底栖桡足类是主要类群，其总平均密度分别为４６６．９和４５７．９ｉｎｄｓ·１０ｃｍ－２。８９．７％的小型底栖动物分布在沉积物表层２ｃｍ内。结果指明小型底栖动物被对虾捕食，并提出了捕食模式。
An investigation into the ecology of meiofauna in Huangdao shrimp mariculture pond was made in May to October, 1987. The mean density of meiofauna is 1092. 4 inds. 10cm-2. 89. 7% of the total meiofauna is concentrated in 0-2cm layer of the sediment. Free-living marine nematodes and harpacticoids are the dominant groups and their densities are 466. 9 inds. 10cm-2 and 457. 9 inds. 10cm-2. They constitut more than 75% of the total meiofauna(43%, May). According to the difference of density of meiofauna inside and outside the cage, the predation model of shrimp on meiofauna is given: polychaetes and harpacticoids are the main food items for juvenile shrimps and nematodes is the item after polychaetes and harpacticoids.
基金
国家自然科学基金
国家教委师资办对留学生择优项目
关键词
虾池
底栖动物
底栖桡足类
数量
Shrimp pond
meiofauna
free-living marine nematodes
harpacticoids
predation
