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Please use this identifier to cite or link to this item: http://purl.org/purl/4045

Title: Vibrios associated with Macrobrachium rosenbergii (De Man, 1879) larvae from three hatcheries on the Indian southwest coast
Authors: Bright Singh, I S
Rosamma, Philip
Rejish Kumar, V J
Jayaprakash, N S
Keywords: vibrios
Issue Date: 1-Mar-2006
Publisher: Blackwell Publishing Ltd
Abstract: Surveys for bacteriological analysis of larval samples to isolate the associated vibrios were carried out during 1985^1992, 2001 and 2002 in three di¡erent hatcheries located on the southwest coast of India. Vibrio isolates were examined for their species diversity, virulence based on haemolysis in prawn blood agar, lipolysis, proteolysis and chitinolysis and antibiotic sensitivity.Vibrio cholerae was the predominant species in the apparently healthy larval samples, whereas V. alginolyticus and V. vulni¢cus dominated during disease and morbidity. No correlation was found between the hydrolytic properties and haemolytic activity of the vibrios associated with the larvae. All isolates were resistant to erythromycin and resistance to oxytetracycline, ampicillin and streptomycin sulphate was prevalent among the larger section of the Vibrio population. This suggested that antibiotic application may not be of much use to protect the larvae fromvibriosis. This is the ¢rst report on the diversity of Vibrio species associated with Macrobrachium rosenbergii larvae and their virulence characteristics based on haemolysis in prawn blood agar
Description: Aquaculture Research, 2006, 37, 351^358 doi:10.1111/j.1365-2109.2005.01432.x
URI: http://dyuthi.cusat.ac.in/purl/4045
Appears in Collections:Bright Singh I S

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