Journal ArticleDOI
Histopathology, Biochemistry, and Pathogenicity of Vibrio harveyi Infecting Black Tiger Prawn Penaeus monodon
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In this article, Vibrio harveyi infection was found to occur in pond-reared black tiger prawns in Thailand, which resulted in marked necrosis in the heart and lymphoid organ.Abstract:
Vibrio harveyi infection was found to occur in pond-reared black tiger prawn in Thailand. The diseased prawns with a hepatopancreatic infection of V. harveyi showed bacterial invasions and multiplication in the tubular lumens. This condition was followed by necrosis of hepatopancreatic cells and the thickened basal lamina, subsequent granulomatous encapsulation of the invaded tubules, and production of granulation tissue around granulomatous lesions. Heavy bacterial multiplication in the hepatopancreatic tubules caused systemic bacterial dissemination, which resulted in marked necrosis in the heart and lymphoid organ. On the other hand, two prawns with percuticular infection by V. harveyi had bacterial invasions in the subcuticular, spongy connective tissue in the telson, and systemic dissemination was followed by the occurrence of bacteriaphagocytizing hemocytes in the various tissues. Both types of isolates (chitinase positive and negative) were moderately pathogenic to prawn; intramuscular inj...read more
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BookDOI
Bacteria from fish and other aquatic animals : a practical identification manual
TL;DR: Aquatic animal species and organism relationship bacteriological culture techniques interpretation of biochemical identification tests and sets biochemical identification tables technical methods techniques for molecular identification of bacteria preparation of media for culture and identification.
Journal ArticleDOI
Field and experimental evidence of Vibrio parahaemolyticus as the causative agent of acute hepatopancreatic necrosis disease of cultured shrimp (Litopenaeus vannamei) in Northwestern Mexico.
Sonia Soto-Rodríguez,Bruno Gomez-Gil,Rodolfo Lozano-Olvera,Miguel Betancourt-Lozano,María Soledad Morales-Covarrubias +4 more
TL;DR: Moribund shrimp affected by acute hepatopancreatic necrosis disease (AHPND) from farms in northwestern Mexico were sampled for bacteriological and histological analysis and results showed that the V. parahaemolyticus strain that causes AHPND acts as a primary pathogen for shrimp in Mexico compared with the other strains reported to date.
Journal ArticleDOI
Inhibition of Luminescence and Virulence in the Black Tiger Prawn (Penaeus monodon) Pathogen Vibrio harveyi by Intercellular Signal Antagonists
TL;DR: Luminescence and toxin production were both inhibited by the signal antagonist at concentrations that had no impact on growth, suggesting that intercellular signaling antagonists have potential utility in the control of V. harveyi prawn infections.
Journal ArticleDOI
Pathogenicity of different isolates of Vibrio harveyi in tiger prawn, Penaeus monodon
TL;DR: It is revealed that proteases, phospholipases, haemolysins or exotoxins might play leading roles in the pathogenicity of V. harveyi in tiger prawn, Penaeus monodon and there are differences between penaeid and non‐penaeid isolates.
Journal ArticleDOI
Experimental infection models for shrimp vibriosis studies: a review.
TL;DR: This review presents the usefulness of infection models with vibriosis pathogens for pathogenicity experiments, testing of curative or prophylactic treatments and the study of host-factors influencing bacterial virulence.
References
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Journal ArticleDOI
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Journal ArticleDOI
Vibrio bacteria isolated from black tiger shrimp, Penaeus monodon Fabricius
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TL;DR: Two hundred and five isolates of Vibrio bacteria were obtained from diseased black tiger shrimp, Penaeus monodon Fabricius, cultured in Thailand during the period from February 1988 to January 1990, and ninety-six isolates were identified as VIBrio parahaemolyticus.
Journal ArticleDOI
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Journal ArticleDOI
Planktonic marine luminous bacteria: species distribution in the water column.
TL;DR: The apparent vertical stratification of two taxa of oceanic luminous bacteria may reflect not only differences in physiology, but also depth-related, species-specific symbiotic associations.