@article{article_67876, title={Argulus foliacesus (Crustacea: Branchiura) Infestation on Oscar, Astronotus ocellatus (Cuvier, 1829) and Its Treatment}, journal={Ege Journal of Fisheries and Aquatic Sciences}, volume={23}, pages={177–179}, year={2006}, author={Tokşen, Erol}, keywords={Astronotus ocellatus, Argulus foliaceus, parasite, DDVP, treatment}, abstract={<p>Argulus foliaceus, or the fish louse, parasitize the skin or gill of the fresh water fish species. Clinical signs in infected fish include scratching or flashing on pond walls or other objects. The fish will continue to eat until the advanced stages of infestation. In the present study, Astronotus ocellatus species (tiger oscar) taken from a local pet shop with symptoms such as abnormal swimming, poor growth and moribundity were examined for bacterial, fungal and parasitical enfections. Any patogen bacteria were isolated. The parasites observed on the skin and fins of fish were identified as A. foliaceus. Then, treatment trails were conducted to evaluate of DDVP (dichlorvos, 0,0-dimeethyl-0-2,2-dichloro vinyl phosphate) against to A. foliaceus. Trials were carried out at water temperature of 26 °C. Fourty specimens of A. ocellatus infested with A. foliaceus, with mean weights 450 g and mean length 25 cm. were held in experimental tanks of 250 l. 1 ppm of DDVP administered to tanks during 1 hour. After administration, all fish were checked for parasite. No parasite was observed on the fish. The symptoms observed before, disappeared after treatment. <br /> </p>}, number={1}, publisher={Ege University}