Monitoring Fish Parasitic Cercaria in the Yodo River Using Experimental Fishes

Autor:	Kaoru Naitoh, Masaharu Tanaka, Shintaro Ohtani, Yuzuru Ishizuka, Kazuhiro Morita, Tatsuma Mori
Rok vydání:	2002
Předmět:	Pseudorasbora parva Fishery Veterinary medicine biology parasitic diseases Fish Bucephalidae Squalidus chankaensis biology.organism_classification River water Digenea
Zdroj:	Journal of Japan Society on Water Environment. 25:226-228
ISSN:	1881-3690 0916-8958
Popis:	Cercarial contamination (being suspected as a gasterostome trematode, Bucephalidae: Digenea) in the Yodo River was studied by the water monitoring using experimental fishes. The fishes including Pseudorasbora parva and Squalidus chankaensis subsp. were exposed in the river and the cercariae that penetrated tail fin of the fishes were observed with a stereoscopic microscope. The monitoring was carried out three times from December 2000 to January 2001 in the Yodo River. Over 80% of the fishes were infected by the cercariae (average numbers of metacercariae in an infected fish ranged from 5.2 to 18.1) during 4 to 10 days of the exposure. The numbers of cercariae in the river water were estimated to be 0.12 to 1.72·m-3.
Databáze:	OpenAIRE
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