Study of gills and hepatopancreas of white leg shrimp (Litopenaeus vannamei) to vibrio species in Choebdeh, Abadan

This paper focused on isolation of various bacteria (Vibrio sp.) from apparently healthyshrimps (Litopenaeus vannamei) collected from ponds suited in Choebdeh, south-western of Iran during two periods of culture (2006-2007). Diagnostic tests were carried out on gills and hepatopancreas for large shrimps and homogenized specimens for smaller ones. Totally, from whole organs, 10 vibrio species were detected probably as follows: Vibrio alginolyticus, Vibrio parahaemolyticus, Vibrio vulnificus، Vibrio mimicus، Vibrio proteolyticus, Vibrio anguillarum, Vibrio splendidus، Vibrio nereis, Vibrio fluvialis، Vibrio campbelli meanwhileVibrio alginolyticus had the maximum abundance (47. 72%). Also, the mean counted vibrio in homogenized samples, gills and hepatopancreas were 7. 57×104, 3. 3×104 and 2. 57×104 (CFU/g) respectively.