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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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