RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2019, Vol. 28 >> Issue (01): 60-67.doi: 10.11870/cjlyzyyhj201901007

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Status of the Early Stage Fish Resources at Huangshi Section in the Middle Reaches of the Yangtze River

HU Xing-kun1, 2, GAO Lei1, YAN Hao2, LIU Shao-ping1,CHEN Da-qing1,DUAN Xin-bin1   

  1. (1.Yangtze River Fisheries Research Institute of Chinese Academy of Fishery Sciences, Wuhan 430223, China;2. Huazhong Agriculture University College of Fishery,Wuhan 43070, China)
  • Online:2019-01-20 Published:2019-02-20

Abstract: In order to study the early stage fish resources, surveys were carried out at Huangshi section in the middle reaches of the Yangtze River in between 2015 and 2016. There were 34 fish species belonging to 9 families and 6 orders. The most abundant of eggs and larvae were Hemiculter bleekeri (85.7% of the total numbers), Parabramis pekinensis (10.9%) and Hypophthalmichthys molitrix (0.8%). The amount of the larvae of different species displayed different temporal dynamics. Hemiculter bleekeri and Parabramis pekinensis dominated during the whole investigation. The proportion of Hypophthalmichthys molitrix increased after May. The amount of Pseudolaubuca sinensis and Rhinogobius sp reached a peak in May and June. An estimated 165.5 billion larvae and 0.67 billion eggs drifted through the Huangshi section in 2015, while 162.0 billion larvae and 1.90 billion eggs were observed in 2016. It indicated that Huangshi section was an important distribution area for early stage  fish resources and there was no obvious decline phenomenon for its resources. More attention should be paid to protecting the early  stage fish resources of Huangshi section.

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