The Effect of Rainbow Trout (Oncorhynchus mykiss Walbaum, 1792) Cage Culture on Benthic Macrofauna in Kesikköprü Dam Lake*

Authors : İlknur KARACA

Pages : 1141-1146

View : 10 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The aim of this research was to determine the effect of a cage farm with a capacity of about 55 t on the benthic macrofauna in Kesikköprü Dam Lake. At 3 stations insert ignore into journalissuearticles values(the cage and 15 m and 60 m from the cage); selected for this purpose the abundance and composition of benthic macrofauna were determined for 11 months. The abundance of benthic macrofauna insert ignore into journalissuearticles values(individuals/m2); between the stations was statistically significant insert ignore into journalissuearticles values(P < 0.05);. The abundance of benthic macrofauna was higher at the cage station than at the other 2 stations, except in April and November. During the research period the lowest number of individuals insert ignore into journalissuearticles values(937 individuals/m2); was found at the second station 15 m from the cage in February; and the highest number insert ignore into journalissuearticles values(14,091 individuals/m2); was determined at the cage station in December. Members of the class Pelecypoda were found at all 3 stations. Dreissena, which is a member of the class Pelecypoda, was the most dominant benthic organism insert ignore into journalissuearticles values(54%);, followed by Chrinomus insert ignore into journalissuearticles values(30%); and Tubifex insert ignore into journalissuearticles values(11%);. At the cage station, while members of the class Pelecypoda were found, no members of the classes Insecta, Oligocheta or Crustacea were found. The highest number of benthic macrofauna genera insert ignore into journalissuearticles values(7); was found at the station 60 m from the cage in April and November. The lowest number of genera insert ignore into journalissuearticles values(1); was found at the cage station in July. The results of this study in Kesikköprü Dam Lake reveal that the cage culture has a localizing effect on the abundance and composition of benthic macrofauna.
Keywords : Cage culture, rainbow trout, benthic macrofauna, Kesikköprü dam lake