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Abundance and biomass of meiobenthos in the spawning ground of anchovy (Engraulis japanicus) in the southern Huanghai Sea

查看全文 作　　者：[1]LIUXiaoshou;[1]ZHANGZhinan;[2]HUANGYong 高影响力作者 机构地区：[1]CollegeofMarineLifeSciences,OceanUniversityofChina,Qingdao266003,China;[2]CollegeofMarineLifeSciences,OceanUniversityofChina,Qingdao266003,China//AgriculturalCollege,LiaochengUniversity,Liaocheng232000,China高影响力机构 出　　处：《Acta Oceanologica Sinica》索引2005年第24卷第3期,共11页高影响力期刊 基　　金：supported by the National Key Basic Research Programs from Ministry of Science and Technology of China under contract Nos G1999043709 and 2002CB412400;the National Natural Science Foundation of China under contract No.40176033. 摘　　要：A grid of 22 stations, giving a broad coverage of the spawning ground of anchovy in the southern Huanghai Sea was selected. Undis- turbed sediments were taken from sampling stations during the cruise in June 2003. The average abundance of meiofauna is (1 584± 686) ind./10cm2, with corresponding biomass (dwt) of (1 086±425)!μg/10cm2. The pattern of abundance of meiofauna is similar to the pattern of biomass. There are 65.88% meiofauna in 0￣2 cm sediments, 27.66% in 2￣5 cm sediments and 6.47% in 5￣8 cm sediments. The Spearman correlation analysis between meiofauna and environmental factors shows that abundance of meiofauna, free living ma- rine nematodes, benthic copepods has significant positive correlations with Chl-a. And the abundance of copepods has significant posi- tive correlations with several factors such as Chl-a, Pha-a, Chl-a plus Pha-a and organic matter. A total of 18 meiofauna groups are i- dentified. Nematode is the most dominant group, average abundance (1 404±670) ind/10cm2, accounting for 88.65%, and the follow- ing groups are also important: benthic copepods (5.48%), kinorhyncha (1.26%), polychaeta (1.07%). By biomass, dominant groups are nematodes (51.72%), polychaeta (21.84%), copepods (14.87%), ostracoda (4.92%), kinorhyncha (3.67%). A total of 90 species of ne- matodes are identified. The species composition of nematodes is listed based on selected two stations 7794 (coastal area) and 10694 (cold water mass in deep waters). 关 键 词：黄海南部 底栖生物 凤尾鱼 生殖习性 桡脚类动物
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