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Characterization of strains of Vibrio splendidus and V. tapetis isolated from corkwing wrasse Symphodus melops suffering vibriosis

Jensen, Sigmund; Samuelsen, Ole Bent; Andersen, Kari; Torkildsen, Lise; Lambert, Christophe; Choquet, Gwénaëlle; Paillard, Christine; Bergh, Øivind
Journal article, Peer reviewed
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URI
http://hdl.handle.net/11250/108679
Date
2003-01-22
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Original version
http://dx.doi.org/10.3354/dao053025
Abstract
Two vibrio bacteria pathogenic to the corkwing wrasse Symphodus melops were isolated.

Vibriosis-inducing strain LP1 was isolated as the dominanting bacterium in kidney samples of

dead and moribund wrasse from a population suffering vibriosis and high daily mortality in 1998 on

the Norwegian west coast. The other vibriosis-inducing strain, LP2, was isolated from wrasse captured

the following year. Re-infection experiments have confirmed that these strains cause vibriosis

in corkwing wrasse. Both strains were typical vibrios sharing the traits of fermentative Gram-negative

curved rods with motility and a positive oxidase reaction. Detailed biochemical and genetic characterisation

revealed a close affiliation to known species of the marine environment. The first isolate,

LP1, is a form of the ubiquitous seawater organism Vibrio splendidus, while the second isolate, LP2,

is closely related to V. tapetis (previously only known as the brown ring disease agent in clams). Identification

of the new wrasse pathogens V. splendidus LP1 and V. tapetis LP2 is facilitated by break

points observed in this study.
Journal
Diseases of Aquatic Organisms

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