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Taxonomic diversity of Fish Assemblages in the Pearl River Estuary, Southern China

Taxonomic diversity of Fish Assemblages in the Pearl River Estuary, Southern China

Xinxing Wang1,4, Yunrong Shi2, Guobao Chen1, Tao Chen1, Kui Zhang1,3* and Wenhua Liu4*

1South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
2East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
3Key Laboratory for Sustainable Utilization of Open-Sea Fishery, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, China
4Marine Biology Institute, Shantou University, Guangdong Province, Shantou 515063, China
 
*      Corresponding author: zhangkui@scsfri.ac.cn, whliu@stu.edu.cn

ABSTRACT

The Pearl River Estuary (PRE), an important place provides natural spawning ground and migration channel to multiple fish species located in the northern South China Sea. Keeping in mind limited data available on the taxonomic diversity of fishes from this region, we compiled time-series data on fish species from the PRE collected since the 1980s, and analyze diversity at different taxonomic levels using an inclusion index at the taxonomic level, and indexes of taxonomic diversity. Species inventory includes 18 orders, 79 families and 167 genera. Average numbers of (families, genera, species), (genera, species), and (species) per order, family, and genus, (4.39, 9.28, 14.94), (2.11, 3.41), and (1.61) were recorded. An average taxonomic distinctness of 75.0, and variation in taxonomic distinctness 99.8 were calculated. Whereas, an average taxonomic distinctness reveals genetic relationships between PRE fish species to be closer than in the East China Sea continental shelf (65.7) and Daya Bay (62.2), and more distant for the Dongsha Islands (55.2). Based on the overall results of the present study it is concluded that species abundance and taxonomic diversities in the PRE reflects healthy ecosystem of PRE.

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Pakistan Journal of Zoology

October

Pakistan J. Zool., Vol. 56, Iss. 5, pp. 2001-2500

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