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| 长江口及邻近海域小型底栖桡足类和动吻类生态的初步研究 |
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J.W.Fleeger1, 唐质灿2, R.P.Higgins3
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1.美国路易斯安那州立大学动物及生理系;2.中国科学院海洋研究所;3.美国史密森研究院无脊椎动物部
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| 摘要: |
| 本文为中美“长江口及邻近水域海洋沉积作用”联合研究的组成部分。作者根据1981年8月和11月采集的沉积样品，分析了小型底栖桡足类和动吻类的栖息密度和种类组成，作为东海小型动物(长度小于1mm的底栖后生动物)种类丰度和个体密度的第一个标志。
以往，Ito (1981)及其所引文献曾对日本猛水蚤类进行了分类学研究。沈嘉瑞等(1956)、郑重等(1965)和陈清潮等(1974)报道过中国近海猛水蚤类。陆鼎恒(1934)记述了黄海山东半岛北岸动吻类的一个新种。然而关于中国近海小型动物的定量研究资料，过去尚无报道。
本文目的是对东海猛水蚤桡足类和动吻类组合进行初步描述，并同中美联合研究所汇集的物理水文资料进行比较。 |
| 关键词: 小型底栖桡足类 动吻类 |
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| 基金项目:中国科学院海洋研究所调查研究报告第1256号 |
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| PRELIMINARY STUDY OF THE ECOLOGY OF MEIOBENTHIC COPEPODA AND KINORHYNCHA IN THE CHANGJIANG ESTUARY AND ADJACENT WATERS |
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Tang Zhican2
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1.Department of Zoology and Physiology, Louisiana State University, USA;2.Institute of Oceanology, Academia Sinica;3.Department of Invertebrate Zoology, NMNH, Smithsonian Institution, USA
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| Abstract: |
| This article presents the results of preliminary quantitative analyses of meiobenthic copepod and kinorhynch assemblages sampled during August and November, 1981 cruises of the China-US Joint Study of Marine Sedimentation Processes in the Changjiang Estuary and adjacen waters. The results show that the density of each group is simi1ar to reported values from equivalent water depths worldwide. Copepods averaged 75.2 and kinorhynchs 26.3 per 10 cm2 over all East China Sea collections. The distribution of these two groups of meiofauna is closely related to the hydrodynamic corditions and sedimentary characteristics in the region. The species diversity (H’) and evenness (J’) in deeper continental shelf waters east of 124°E are higher, their mean values being 2.5 and 0.9 respectively, and the number of species here is also high with an average of 15.9 species per core. In the shallow water area of the Changjiang Delta, the diversity, evenness and number of species are lower, being 1.8, 0.8 and 9.3 respectively. Members of a shallow water species group occur almost exclusively in the Changjiang Delta，area，while those of deeper water species groups are mostly distributed in the continental shelf area east of 124°E and occasionally are found at deltaic sites. Members of a cosmopolitan species group are found throughout the region investigated. |
| Key words: MEIOBENTHIC COPEPODA KINORHYNCHA |
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