Treatment of Dactylogyrosis in Oscar (Astronotus ocellatus)

오스카(Astronotus ocellatus)에서의 아가미흡충증 치료

  • Lim Kyung-taek (College of Veterinary Medicine, Seoul National University) ;
  • Kim JI-hyung (College of Veterinary Medicine, Seoul National University) ;
  • Park Jae-hak (College of Veterinary Medicine and Priority Research Institute, Seoul National University) ;
  • Shin Nam-shik (College of Veterinary Medicine and Priority Research Institute, Seoul National University) ;
  • Heo Gang-joon (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University) ;
  • park Se-chang (College of Veterinary Medicine and Priority Research Institute, Seoul National University)
  • 임경택 (서울대학교 수의과대학) ;
  • 김지형 (서울대학교 수의과대학) ;
  • 박재학 (서울대학교 수의과대학 및 중점연구소) ;
  • 신남식 (서울대학교 수의과대학 및 중점연구소) ;
  • 허강준 (충북대학교 수의과대학 및 동물의학연구소) ;
  • 박세창 (서울대학교 수의과대학 및 중점연구소)
  • Published : 2005.06.01

Abstract

Dead oscars (Astronotus ocellatus) were presented for necropsy in January, 2005. Oscars, which had been reared densely, were dead in large quantities. At necropsy, they were severely infected by Dactylogyrus spp. We requested for the oscar samples which had been raised in the same water tank. Two of them were sacrificed and necropsied. At the microscopic examination, we verified dactylogyrosis of oscars. The other oscars were treated by praziquantel. Treatment was started with a dosage of 2.5 mg/L. From a second day, we treated 5.0 mg/L every two days during 4 days. At sixth day, No Dactylogyrus flukes were found but only larvae were existed. After 2 weeks without additional medication, both Dactylogyrus flukes and larvae were eliminated.

Keywords

References

  1. Fury JR, FA Morello. The contributions of an exotic fish, the Oscar, to the sports fishery of the Everglades water conservation area. Proc Annu Conf Southeast Assoc Fish and Wildl Agencies 1994; 48: 474-481
  2. Goven SA, Gilbert JP, Gratzek JB. Apparent drug resistance to the organophosphate dimethyl (2,2,2-trichloro-1-hydroxyethyl) phosphate by monogenetic trematodes. J Wildlife Dis 1980; 16: 343-346
  3. Kim JH, Hayward CJ, Joh SJ, Heo GJ. Parasitic infections in live freshwater tropical fishes imported to Korea. Dis Aquat Organ 2002; 52: 169-173 https://doi.org/10.3354/dao052169
  4. Stetter F, Untergrasser D, Iglauer F, Schreckenbach K. Case report treatment of the gillworm disease (Dactylogyrosis) of some South American cichlids and catfish. lnt J Parasitol 1991; 21: 565-572 https://doi.org/10.1016/0020-7519(91)90061-B
  5. Szekely C, Molnar K. Mebendazole is an efficacious drug against pseudogyrodactyolsis in the European eel (Anguilla anguilla). J Appl Ichthol 1987; 3: 183-186 https://doi.org/10.1111/j.1439-0426.1987.tb00539.x
  6. Thoney D. The effects of various chemicals on monogeneans parasitizing the skin of elasmobranches. In: American Association of Zoological Parks and Aquarium Annual Proceedings 1989; 217-222
  7. Wooten R. The parasitology of teleosts. In: Fish pathology. London: Bailliere-Tindall. 1989: 242-288