Pathogenicity profile of Vibrio parahaemolyticus in farmed Pacific white shrimp, Penaeus vannamei

A pathobiological study was conducted using Vibrio parahaemolyticus (VP) strain isolated from vibriosis affected shrimp (Penaeus vannamei) farms in Kancheepuram and Thiruvallur districts of Tamil Nadu during August 2014 to February 2015. The isolate was identified based on the morphological, physiol...

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Bibliographic Details
Published in:Fish & shellfish immunology 2017-08, Vol.67, p.368-381
Main Authors: Ananda Raja, R., Sridhar, R., Balachandran, C., Palanisammi, A., Ramesh, S., Nagarajan, K.
Format: Article
Language:English
Subjects:
AHPND
Animals
Arthropod Proteins - genetics
Arthropod Proteins - immunology
Biochemical and molecular characterizations
EMS -LD50
Gene Expression Regulation - immunology
Hemocytes - immunology
Immunity, Innate - genetics
India
Penaeidae - immunology
Penaeidae - microbiology
Penaeus vannamei
Vibrio parahaemolyticus
Vibrio parahaemolyticus - physiology
Vibriosis
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Summary:A pathobiological study was conducted using Vibrio parahaemolyticus (VP) strain isolated from vibriosis affected shrimp (Penaeus vannamei) farms in Kancheepuram and Thiruvallur districts of Tamil Nadu during August 2014 to February 2015. The isolate was identified based on the morphological, physiological, biochemical and molecular characters. LD50 value with intramuscular injection was determined as 2.6 × 104 cfu/shrimp and sequential pathology was studied giving 6.1 × 103 cfu/shrimp (LD25). Total plate count (TPC) and total Vibrio count (TVC) in water, pond sediment, haemolymph, muscle, HP and gut were found significantly (P 
ISSN:1050-4648
1095-9947
DOI:10.1016/j.fsi.2017.06.020