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Distribution of Vibrionaceae isolated from cultured bay scallop, Argopecten irradians

Jiseol Yoon, Miseon Park, Keun-Yong Kim, Namil Won and Kyoungmi Won

South-East Sea Fisheries Institute, National institute of fisheries science, Tongyeong-si 53085, Korea; Korea Maritime and Ocean University, Busan 49112, Korea; K-water Institute, Daejeon-si 34045, Korea; Pathology research division, National institute of

A bacteriological survey in cultured scallop Argopecten irradians was conducted in Jaran bay, Korea from April, 2016 to January, 2017. A total number of 32 Vibrionaceae isolates were collected, dominantly. All isolates were phenotypically characterized and then identified with sequencing of the 16S rDNA and rpoA gene. A fifth species of Vibrionaceae were identified as Vibrio harveyi (8 strains, 25.0%), Vibrio alginolyticus (4 strains, 12.5%), Vibrio mediterranei (3 strains, 9.4%), Vibrio shilonii (3 strains, 9.4%) and Vibrio chagasii (3 strains, 9.4%), Photobacterium jeanii (2 strains, 6.3%), Photobacterium swingsii (1 strains, 3.1%), Vibrio artabrorum (1 strains, 3.1%), Vibrio cyclitrophicus (1 strains, 3.1%), Vibrio fortis (1 strains, 3.1%), Vibrio owensii (1 strains, 3.1%), Vibrio parahaemolyticus (1 strains, 3.1%), Vibrio Pelagius (1 strains, 3.1%), Vibrio splendidus (1 strains, 3.1%), Vibrio zhanjiangensis (1 strains, 3.1%). In the aquacultured scallop Argopecten irradians, Harveyi clade is a major clade including by V. harveyi (3), V. alginolyticus (3) and V. parahaemolyticus (1). Most of detected all bacteria were vibrio species that are associated with bivalve molluscs in commensal or pathogenic relations.

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