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Fattening of the Ridged Swimming Crab, Charybdis Natator Herbst | OMICS International | Abstract
ISSN: 2155-9910

Journal of Marine Science: Research & Development
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Research Article

Fattening of the Ridged Swimming Crab, Charybdis Natator Herbst

P Soundarapandian1*, C Sivasubramanian2 and D Varadharajan1

1Faculty of Marine Sciences, Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai-608 502, Tamil Nadu, India

2Department of Zoology, Government Arts College, Dharmapuri, India

*Corresponding Author:
Soundarapandian P
Faculty of Marine Sciences, Centre of Advanced Study in Marine Biology
Annamalai University, Parangipettai-608502, Tamil Nadu, India
Tel: 04144-243223
Fax: 04144-243553
E-mail: [email protected]

Received date March 19, 2013; Accepted date June 14, 2013; Published date June 20, 2013

Citation: Soundarapandian P, Sivasubramanian C, Varadharajan D (2013) Fattening of the Ridged Swimming Crab, Charybdis Natator Herbst. J Marine Sci Res Dev 3:125. doi: 10.4172/2155-9910.1000125

Copyright: © 2013 Soundarapandian P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


For fattening three different salinities were tried (20, 25 and 30 ppt). The weight gain of the crabs cultured in 30 ppt was (58.0 g) significantly higher than 20 (46.7 g) and 25 (50.4 g) ppt. The shell was becoming harder in shorter duration (10.6 days) when the water crabs were cultured in 30 ppt rather than other salinities (20 and 25 ppt). Hence 30 ppt was selected as optimum salinity for the culture of water crabs as evidenced by higher weight gain and shorter duration for shell hardening.The water crabs offered with trash fish showed a significantly higher weight gain (50.40 g). The crabs were hardened significantly in very shorter duration when they were fed with trash fish (14 days). However, the animals were taking longer duration when fed with clam (17.6 days) and oyster (16.6 days). The survival of the crabs was 100% irrespective of the feeds used. So trash feed is recommended as a best feed for fattening of C. natator.


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