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cje ›› 2009, Vol. 28 ›› Issue (10): 2056-2062.

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Species composition and biodiversity of fish community in Chongming Dongtan of Yangtze River estuary.

 ZHANG Chao1;PENG Beng 1,3;LIU Jian2;ZHANG Long-Zhen1;FENG An-Peng1;HOU Dun-Li1;ZIAO Feng1;LIU Jian-Yi1   

  1. 1East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key and Open Laboratory of Marine and Estuarine Fisheries Resources and Ecology, Ministry of Agriculture, Shanghai 200090, China|2Superintendency Department of Shanghai Yangtze Estuarine Nature Reserve for Chinese Sturgeon, Shanghai 200092, China|3Aquaculture Division, EInstitute of Shanghai Ocean University, Shanghai 200090, China
  • Online:2009-11-10 Published:2009-11-10

Abstract: An investigation on the species composition and biodiversity of fish community in Chongming Dongtan of Yangtze River estuary was made in MayAugust,
2004-2006. A total of 39  species were collected, belonging to 37 genera, 22 families, and 14 orders. The dominant species were Saurogobio dumerili, Lateolabrax maculatus, Cynoglossus gracilis, Coilia ectenes, Liza haematocheila, and Mugil cephalus. Perciformes was most abundant, followed by Cypriniformes. The fish community could be classified into 4 ecological types, i.e., freshwater fish (13 species), estuarine fish (4 species), migratory fish (6 species), and marine fish (16 species). The eigenvalues of species diversity were Margalef’s index (R) being 2.30, ShannonWiener’s index (H′) being 1.95, Wilhm’s index (H″) being 2.17, McNaughton’s indices Dn and Dw being 0.60 and 0.45, respectively, Simpson’s index (C) being
 0.22, and Pielou’s index (J′) being 0.59. In the fish community, small with a mean body weight less than 50 g were the most superior in numbers, the
 capture size of commercial fishes became smaller, and the biodiversity decreased. It’s needed to strengthen the conservation and restoration of key fish species and their important habitats to protect the fish resources in Chongming Dongtan.

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