Fish Stock Survey in Dandong Section of the Dayang River
[Objective]In order to explore the fish resources in the Dandong section of the Dayang River.[Method]Four surveys of fish stocks in the basin were conducted between December 2021 and June 2023.[Result]The results showed that a total of 38 species of fish were collect-ed in this survey,belonging to 10 orders,15 families and 37 genera. Among them,Cypriniformes were the most numerous,with a total of 23 species in 2 families and 22 genera,accounting for 60.53％;followed by 4 species of Perciformes,with a total of 4 species in 4 families and 4 genera,accounting for 10.53％;and 2 species of Siluriformes,Osmeriformes and Mugiliformes,accounting for 5.26％;among them,Petro-myzoniformes,Angulariformes,Petromyzoniformes and Mugiliformes were the most numerous. Among them,Petromyzoniformes,Anguilli-formes,Clupeiformes,Scorpaeniformes and Tetraodontiformes each had one species of one family and one genus,accounting for 2. 63％. In terms of fish ecotypes,the fish community was dominated by demersal,slimy egg-laying,omnivorous fish. The catch composition was higher for Pseudogobio vaillanti,Zacco platypus and Odontobutis yaluens,with 16.37％,12.10％ and 9.79％,respectively.[Conclusion]This study supplements the basic data on the status of fish resources in the Dandong section of the Dayang River,in order to provide scientific basis for the management and ecological assessment of fish resources in this river.
万方数据
维普
