A Survey on Health and Mortality Causative Agent of Pinctada margaritifera Produced in Bander Lengh Research Station for Mollusc

The present study was carried out to investigate the status of health and disease problem in pearl oyster hatcheries in Bander Lengh in Hormozgan Province. From July to September of 2010, 200 samples were collected from different stages (eggs, Dshape, larva, Umbo stage eyespot and Adult) of P. margartifera in Bander lengh in Hormozgan Province. The samples divided to three groups. One group was used for studied the gross and internal observation. The results showed different malformation such as fouling organism, worms, adhesion, color changes and etc. The second group was used for probable bacteria and fungi infestation by the selected media such as TSA, MD (bacteria) and (S.D.A and P.Y.G) for fungi. The main identified bacteria and fungi were consist of Vibrio harveyi, V. alginolytics and V. splendidus and for Fungi Saprolgnia, Alternaria and Chlydosporai, respectively. In this review we also found different polycot in the surface of oysters. The organs examined for histopathology showed no major problem.