Bacteriological observation of fishing port for hygiene control

Abstract

Technology on Fishing Ports, Grounds and Communities, Chiyoda, Tokyo 101 0047 JapanTo control the hygienic conditions ofˆshery products from catching to landing and processing, both qualitative and quantitative bacterial observations atˆshing ports must be considered. Fourˆshing ports, Shibetsu and Rausu in Hokkaido, Yui in Shizuoka prefecture, and Hakata in Fukuoka prefecture, were selected and the distribution of coliform bacteria and human pathogenic vibrio species were studied at these sites. Coliforms and Escherichia coli were observed from all fourˆshing ports, while Vibrio parahaemolyticus was observed from Yui and Hakataˆshing ports. The number of V. parahaemolyticus in the surface seawater varied seasonally from ＜1.8 to 240 MPN/100 mL. E. coli and human pathogenic vibrio species were not observed from electrolyzed, chlorine disinfected or deep seawater used at these fourˆshing ports for hygiene control. The disinfected seawater or deep seawater for hygiene control was eŠective for washing off the bacteria from ‰oors and equipment at theˆshing markets.