Mortality of Wild Three-lips <i>Opsariichthys uncirostris</i> by Infection with <i>Chilodonella　hexasticha</i>

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  • 繊毛虫<i>Chilodonella hexasticha</i>の寄生による野生ハスの死亡事例
  • 繊毛虫Chilodonella hexastichaの寄生による野生ハスの死亡事例
  • センモウチュウ Chilodonella hexasticha ノ キセイ ニ ヨル ヤセイ ハス ノ シボウ ジレイ
  • Mortality of Wild Three-lips Opsariichthys uncirostris by Infection with Chilodonella　hexasticha

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Abstract

Mortalities of three-lips Opsariichthys uncirostris occurred in a river in Shiga Prefecture, Japan, during the summer of 2013. The gills of diseased fish were heavily infected with the parasitic ciliate Chilodonella hexasticha. The intensity of parasite was 0.73-1.15 millions in dead fish, and 0.45-0.52 millions in apparently healthy fish. The cause of fish death may be a respiratory dysfunction by congestion due to the heavy infection with C. hexasticha on the gills. This is the first report of C. hexasticha infection of wild fish in Japan.

Journal

  • Fish Pathology

    Fish Pathology 49 (2), 49-52, 2014

    The Japanese Society of Fish Pathology

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