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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2018, Vol. 6, Issue 1, Part A

Aetiological studies on mixed infection of Abdominal segment deformity disease (ASDD) and Enterocytozoon hepatopenaei (EHP) in cultured Litopenaeus vannamei


Author(s): Janakiram P, GK Geetha, Sunil Kumar D and Jayasree L

Abstract:
Samples of cultured Litopenaeus vannamei showing symptoms of Abdominal Segment Deformity Disease (ASDD) and simultaneously infected by Enterocytozoon hepatopenaei (EHP) collected during the period 2013-2014 from culture ponds of Andhra Pradesh, India were subjected to histopathological, microbiological, molecular and Transmission Electron Microscopic (TEM) studies. Histopathological studies revealed changes such as excessive vacuolization in the gills, sloughing off epithelial layers in the gut, disintegration and lacunae formation in the muscle fibres, degeneration of hepatopancreatic tubules besides haemocytic infiltration into the inter tubular spaces. Spores of Enterocytozoon hepatopenaei (EHP) were found inside the B-cells of hepatopancreas. All the samples were found positive for EHP but IHHNV 50% only. Vibrio harveyi, V. alginolyticus and V. vulnificus were found as associated bacteria. TEM studies confirmed 20-25 nm virus like particles in gill and muscle tissue. This constitutes the first report from India for the mixed infection of ASDD and EHP in cultured L. vannamei.

Pages: 19-26  |  588 Views  49 Downloads

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How to cite this article:
Janakiram P, GK Geetha, Sunil Kumar D and Jayasree L. Aetiological studies on mixed infection of Abdominal segment deformity disease (ASDD) and Enterocytozoon hepatopenaei (EHP) in cultured Litopenaeus vannamei. International Journal of Fisheries and Aquatic Studies. 2018; 6(1): 19-26.
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