STATUS OF FISHERIES IN THE SECTION BELOW THE GEZHOUBA DAM OF THE YANGTZE RIVER

From 1997 to 1999, investigations on the fishery status had been taken in the section below the Gezhouba Dam in the Yangtze River.A total of 3254.32kg fish were captured with various fishing gears, including trammel, set long line, and set .gill net.Forty-five species were obtained.Dominant species were Coreius guichenoti (Sauvage et Dabry), Coreius heterodon (Bleeker), Pelteobagrus Vachelli (Richardson), Rhinogobio ventralis (Sauvage et Dabry), Rhinogobio ventralis (Sauvage et Dabry), Leiocassis longirostris Günther, Ctenopharyngodon idellus Cuvier et Valenciennes, Hypophthalmichthys molitrix (Cuvier et Valenciennes) and Silurus meridionalis Chen.In comparison with the data gotten before the establishment of Gezhouba dam, the abundance of Parabramis pekinensis (Basilewsky), Mylopharyngodon piceus Richardson, Elopichthys bambusa Richardson, and Ochetobius elongatus Kner had been decreasing.Some rare species, such as Macrura reevesii, Schizothorax (Sch.) prenanti (Tchang), Sinilabeo rendahli rendahli (Kimu-ra), and Fufu obscurus (Abe) have disappeared in the section.