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Evaluation of suitable sites for mud crab farming in Ratnagiri District of Maharashtra, India

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Title Evaluation of suitable sites for mud
crab farming in Ratnagiri District of
Maharashtra, India
Not Available
 
Creator Vasudevan,N
Paul,Bhaskar
Gopinath,Girish
Sawant,D D
Anasu Koya,A
Sanil,N K
Dineshbabu,A P
Singh,V V
Zacharia,P U
Kaladharan,P
Asokan,P K
Vinod,K
 
Subject IS, Maharashtra, mud crab farming, potential areas,
Ratnagiri
 
Description Not Available
The State of Maharashtra has vast stretches of estuaries, creeks and
mangrove swamps, which offers great potential for aquaculture,
particularly for mud crab farming. In view of the natural resources and
market potential for mud crab, the Department of Forests, Government of
Maharashtra plans to promote mud crab farming through a novel
approach, which aims at providing livelihood support to the local
communities utilizing the mangrove wetlands; thereby the local
communities also shoulder the responsibility of conservation of mangroves.
In this backdrop, a study was conducted to identify the suitable sites for
sustainable mud crab culture, in GIS environment, based on various
physical and environmental criteria including topography, soil types, landuse
systems, vegetation, water quality, water availability, salinity, risks of
flooding, infrastructure, seed resources and availability, market and
support services. The brackishwater stretches of Anjarle, Kelshi, Aade,
Velas and Ansure in the Ratnagiri district of Maharashtra were studied,
and all study stations had patchy to thick mangrove vegetation. The major
mangrove species encountered were: Avicennia marina, Avicennia
officinalis, Sonneratia caseolaris, Rhizophora mucronata and Acanthus
ilicifolius. The pH of water was near-neutral to alkaline, whereas dissolved
oxygen levels were found to be within the ideal range. The salinity of the
tidal creeks ranged from 7.24 ppt (Velas) to 35.9 ppt (Ansure) which
generally varies with the tide. The ammonia levels which ranged from 0
(Aade and Ansure) to 0.5 ppm (Kelshi), falls within the safe levels for
Available online at: www.mbai.org.in doi: 10.6024/jmbai.2017.59.2.2014-05
aquaculture. The sediment pH ranged from 6.2 to 8.32. The organic
carbon levels in sediment ranged from 0.27 to 2.94% indicating medium
to high productive nature of sediment. Samples of mud crab collected from
the study areas were processed for screening for WSSV infection. All
samples gave Negative results in primary as well as nested PCRs,
indicating the absence of WSSV in the wild mud crab population.
Integrating the analysis result along with supporting spatial data with the
aid of GIS and Remote Sensing techniques, a total of 10.063 ha have been
evaluated as suitable areas for mud crab farming along the brackishwater
stretches of Anjarle (1.91 ha), Aade (2.069 ha), Kelshi (1.77 ha), Velas
(0.538 ha) and Ansure (3.776 ha).
Not Available
 
Date 2021-09-17T07:59:38Z
2021-09-17T07:59:38Z
2017
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63849
 
Language English
 
Relation Not Available
 
Publisher Marine Biological Association of India, Kochi