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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Jan 2017, 38 (1)                                     Back


nstantaneous and historical temperature effects on a-pinene

Effect of mangrove plant (Sesuvium portulacastrum) extract

against Vibrio harveyi during shrimp larviculture

 

Masilamani Dineshkumar1, Sudalayandi Kannappan1*and Krishnamoorthy Sivakumar1,2

1Nutrition, Genetics and Biotechnology Division, ICAR - Central Institute of Brackishwater Aquaculture, Chennai-600 028, India

2ICAR ? Krishi Vigyan Kendra, Tamil Nadu Veterinary and Animal Sciences University, Kattupakkam - 603 203, India

*Corresponding Author E-mail: sudalikanna@gmail.com

 

 

 

Key words

Antagonism,

Sesuvium portulacastrum,

Shrimp larviculture,

Vibrio harveyi

 

  

Publication Data

Paper received : 10.11.2015

Revised received : 07.03.2016

Re-revised received : 25.06.2016

Accepted : 13.07.2016

 

Abstract

Aim : The present study aimed at finding a potential antagonistic activity of the leaves of mangrove plant Sesuvium portulacastrum against pathogenic Vibrio harveyi during shrimp larviculture.

 

Methodology : Crude extract obtained from the leaves of mangrove plant S. portulacastrum was screened for its antagonistic activity against V. harveyi and the minimum inhibitory concentration was determined. Crude extract was characterized for its phytochemical composition by GC-MS and FTIR analysis. The antagonistic activity of S. portulacastrum crude extract was tested against V. harveyi during Penaeus monodon larviculture.  

 

Results : MIC of S. portulacastrum extract was 100 μg against 1?108CFUml-1of V. harveyi. When V. harveyi was cultured in Luria Bertani broth with crude extract of S. portulacastrum (100 μg ml-1) the growth and its virulence factors became weak. The cumulative percentage on mortality of postlarvae was 54% in 30 days, whereas control tank showed 67% mortality. Differences in reduction on the cumulative percentage mortality in the treatment tank was 13% as compared to control. Using statistical analysis, significant differences (P<0.05) were observed between control and treatment..

 

Interpretation : This study endorse that crude extract of S. portulacastrum can be used as non-antibiotic and bio-therapeutic proxy to control bio-luminescence disease causing V. harveyi in the shrimp larviculture practice.

 

 

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