Argulus foliacesus (Crustacea: Branchiura) infestation on oscar, Astronotus ocellatus (Cuvier, 1829) and its treatment

Astronot balıklarında (Astronotus ocellatus Cuvier, 1829) görülen Argulus foliacesus (Crustacea: Branchiura) enfeksiyonu ve tedavisi. Balık biti olarak da adlandırılan Argulu foliaceus tatlı su balıklarının deri ve solungaçlarında parazit olarak yaşamaktadır. Hasta balıklar havuz duvarına ve diğer cisimlere sürtünme gibi belirtiler gösterir. Balık, enfeksiyonun ilerlemiş evrelerine kadar yem almaya devam eder. Bu çalışmada, bir akvaryumcudan alınan anormal yüzen, zayıf ve ölmek üzere olan astronot balıkları (Astronotus ocellatus) bakteriyel, paraziter ve fungal hastalıklar açısından incelendi. Herhangi bakteriyel bir hastalık teşhis edilmedi. Balığın deri ve solungaçlarında görülen parazitin A. foliaceus olduğu tespit edildi. DDVP (dichlorvos, 0,0-dimeethyl-0-2,2-dichloro vinyl phosphate)’nin A. foliaceus’a karşı etkili olup olmadığını anlamak için tedavi denemeleri yapıldı. A. foliaceus ile enfekte 450 g. ağırlığında 25 cm boyunda 40 adet A. ocellatus 250 litrelik tanklara konuldu. Denemeler 26ºC su sıcaklığında yapıldı. DDVP 1 ppm dozunda 1 saat uygulandı. Uygulama sonrasında tüm balıklar parazit açısından incelendi. Balıklar üzerinde parazit görülmedi. Önceden var olan semptomlar tedavi sonrasında kayboldu.

Anahtar Kelimeler:

parazitler, Crustacea, tedavi, Argulidae, bulaşıklık

Astronot balıklarında (Astronotus ocellatus Cuvier, 1829) görülen Argulus folicesus (Crustacea: Branchiura) enfeksiyonu ve tedavisi

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.

Keywords:

parasites, Crustacea, therapy, Argulidae, infestation,

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Bauer, R. 1991. Erkrankungen der Aquarienfishe. Verlag Paul Parey. Berlin und Hamburg.

Buchmann, K., J. Bresciani. 1997. Parasitic infections in pond-reared rainbow trout Oncorhynchus mykiss in Denmark. Inter-Reseach. Dis. Aquat. Org., 28: 125-138.

Burgu, A., T. Oguz. 1984. The results of parasitological examination of Carassius fish. (in Turkish) Ankara Univ. J. Vet. Faculty., 31: 197-206.

Bykhovskaya-Pavlovskaya, I.E., A.V. Gusev, M.N. Dubinina, N.A. Izyumova, T.S. Smirnova, I.L. Sokolovskaya, G.A. Shtein, S.S. Shulman and V.M. Epstein. 1964. Key to Parasites of Freshwater Fish of the U.S.S.R. Leningrad.

Fryer G. 1982. The Parasitic Copepoda and Branchiura of British Freshwater Fishes: A handbook and key. Freshwater Biological Association, Scientific Publication, 46.

Gault, N.F.S., D.J. Kilpatric and M.T. Steward. 2002. Biological control of the fish louse in a rainbow trout fishery. J. Fish Biol., 60: 226-237.

Geldiay, R., S. Balik. 1974. Mainly endo and ecto-parasites observed on the fresh water fish in Turkey (in Tukish). Ege Üniv. Matbaası, İzmir.

Gurney, R. 1948. The British species of fish-louse of the genus Argulus. Proceedings of the Zoological Society of London, 118: 553-558.

Hakalahti, T., Y. Lankinen and E.T. Valtonen. 2004. Efficacy of emamectin benzoate in the control of Argulus coregoni (Crustacea: Branchiura) on rainbow trout Oncorhynchus mykiss. Dis Aquat Org., 60: 197–204.

Kabata, Z. 1985. Parasites and Diseases of Fish Cultured in the Tropics. Taylor & Francis, London.

Kollatsch, D. 1959. Untersuchungen über die Biologie und Ökologie der Karpfenlaus (Argulus foliaceus L.). Zool Beitr., 5:1–36.

Lester, R.J.G., F. R. Roubal. 1995. Phylum Arthropoda, p. 475-598. In P.T.K. Woo [ed], Fish Diseases and Disorders, Volume 1: Protozoan and Metazoan Infections. CAB International, Wallingford, U.K.

Mikheev, V.N., A.F. Pasternak, E.T. Valtonen, Y.A.N. Lankinen. 2001. Spatial distribution and hatching of overwintered eggs of a fish ectoparasite, Argulus coregoni (Crustacea: Branchiura). Dis Aquat Org., 46: 123–128.

Molnar, K., C. Szekely. 1998. Occurrence of skrjabillanid nematodes in fishes of Hungary and in the intermediate host, Argulus foliaceus L. Acta Vet. Hun., 46: 451.

Oge, S. 2002. Chemotherapy for parasites of freshwater fish. J. Turkish Parazitol., 26: 113-118.

Poulin, R., G.J. FitzGerald. 1987. The potential of parasitism in the structuring of salt marsh stickleback cmmunity. Canadian J. Zool., 67: 14-18.

Puffer, H.W., M.L. Beal. 1981. Control of parasitic infestationsin killifish (Fundulus parvipinnis). Lab. Animal Sci., 31: 200-201.

Richards, R. 1977. Diseases of aquarium fish-2.Skin diseases. Vet. Rec., 101 : 132-135.

Sarieyyupoglu, M., N. Saglam. 1991. Ergasilus sieboldi and Argulus foliaceus observed on Capoeta trutta caught in the polluted region of Keban Dam Lake (in Turkish). E.Ü. Su Ürün. Derg., 8: 143-154.

Shimura, S. 1983. Seasonal occurrence, sex ration and site preference of Argulus coregoni Thorell (Crustacea:Branchiura) parasitic on cultured freshwater salmonids in Japan. Parasitology, 86: 537-552.

Singhal, R.N., S. Jeet and R.W. Davies. 1986. Chemotherapy of six ectoparasitic diseases of cultured fish. Aquacult. and Fish. Manang., 54: 175-171.

Soulsby, E.J.L. (1982) Helminths, Arthropods and Protozoa of Domesticated Animals. 7th Ed. Baillière Tindall, London, U.K.