Fish Pathology
Online ISSN : 1881-7335
Print ISSN : 0388-788X
ISSN-L : 0388-788X
Short Communications
Evaluation of Pathogenicity of Edwardsiella ictaluri to Riverine Fish Species Using an Immersion Infection Method
Hisato TakeuchiDaiki NakanoMayu IwadareRyuji TomonoToshihiro ImaiKazutomo HoriHiroaki IzumiAki NambaSonoko ShimizuToshihiro NakaiNobuhiro Mano
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2019 Volume 54 Issue 3 Pages 61-63

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Abstract

Experimental infection trials of six riverine fish species with Edwardsiella ictaluri were performed using an immersion method at three water temperatures, 20°C, 25°C, and 30°C. ​At 20°C, mortalities were recorded only in ayu Plecoglossus altivelis and amur catfish Silurus asotus. ​Whereas, at 25°C or 30°C, mortality events occurred in other species including Japanese dace Tribilodon hakonensis, gibachi Tachysurus tokiensis, and Japanese eel Anguilla japonica, except for common carp Cyprinus carpio, and high (≥80%) cumulative mortalities were recorded in ayu, amur catfish, and gibachi. ​These results suggest that many riverine fishes are at risk of E. ictaluri infection during periods of high water temperature.

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© 2019 The Japanese Society of Fish Pathology
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