FN Archimer Export Format PT C TI Detection of shrimp pathogen Vibrio nigripulchritudo in sediments of a New-Caledonian grow-out pond during a drying period OT Détection du pathogène de la crevtte, Vibrio nigripulchritudo, dans les sédiments d'un bassin de grossissement durant une période d'assec en Nouvelle-Caléondie BT AF CHARME, Marion ANSQUER, Dominique VOUREY, Elodie WALLING, Emilie BELIAEFF, Benoit LABREUCHE, Yannick AS 1:1;2:1;3:1;4:1;5:1;6:1; FF 1:;2:;3:;4:;5:;6:; C1 Ifremer, France C2 IFREMER, FRANCE SI NOUMEA SAINT VINCENT UR https://archimer.ifremer.fr/doc/00197/30874/29242.pdf LA English DT Poster AB Experimental infections together with epidemiological studies have shown that pathogenic and non‐pathogenic isolates of V. nigripulchritudo co‐existed in shrimp farm environment (2, 3). Moreover, obtained results also demonstrated that the “summer syndrome”was caused by a single, possibly emerging, cluster of virulent strains. Consequently, it was hypothesized that pathogenic strains of V. nigripulchritudo may persist from one year to the next in the shrimp farm environment and re‐develop inside the grow‐out system at the following rearing cycle (3). This study was therefore aimed at determining whether V. nigripulchritudo isolates may survive, or not, in a shrimp pond bottom soil during a 18‐week drying period. To this end, V.nigripulchritudo mapping was performed with recently developed molecular tools and classical culture‐dependent techniques. PY 2009 PD MAR ID 30874 ER EF