Effect of experimental vibriosis by Vibrio harveyi on gill histopathology and total haemocyte changes of haemolymph in white leg shrimp (Litopenaeus vannamei)
Subject Areas : New Technologies in Aquaculture Development
Keywords: Bushehr, Histopathologic, Keywords: Gill, White leg shrimp (Litopenaeus vannamei), Vibrio harveyi, Haemolymph,
Abstract :
Abstract[1] This study was carried out to survey gill histopathology and total haemocyte changes in experimental vibriosis by Vibrio harveyi in white leg shrimp. For this order one group (30 post larvaes) 75-day old were examined. Shrimps were challenged by 30-minute bath method and with 109 cell/ml concentration of bacteria. Results from gill histopathology in diseased moribund shrimps showed necrosis, lamella fusion, edema, haemocyte infiltration in gill filaments and nodular haemocyte aggregations with melanized foci. Results from total haemocyte count in diseased moribund shrimps showed a significant decrease in this factor in comparison with control group.
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