alexa Sea Ranching of Laboratory Produced Seeds of Blue Swimmer Crab,<em> Portunus pelagicus</em> (Linnaeus) from South East Coast of India | OMICS International | Abstract
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
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Research Article

Sea Ranching of Laboratory Produced Seeds of Blue Swimmer Crab, Portunus pelagicus (Linnaeus) from South East Coast of India

P. Soundarapandian1*, D. Varadharajan and T. Anand2
1,2Faculty of Marine Sciences, Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai, Tamil Nadu, India
Corresponding Author : Soundarapandian P
Faculty of Marine Sciences
Centre of Advanced Study in Marine Biology
Annamalai University, Parangipettai-608502
Tamil Nadu, India
E-mail: [email protected]
Received April 10, 2013; Accepted May 14, 2013; Published May 20, 2013
Citation: Soundarapandian P, Varadharajan D, Anand T (2013) Sea Ranching of Laboratory Produced Seeds of Blue Swimmer Crab, Portunus pelagicus (Linnaeus) from South East Coast of India. J Earth Sci Climate Change 4:138. doi:10.4172/2157-7617.1000138
Copyright: © 2013 Soundarapandian P, etal. 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.

Abstract

The increased demand for the crabs in different markets and the depletion of resources along the coast has necessitated an urgent need for enhancing crab population. In this juncture, sea ranching is one of the right choice to increase the population. The fecundity rate of P. pelagicus was ranging between 9, 00, 000 to 10, 60,000 eggs in wild collected berried females, whereas 8, 72,000 to 9, 48,000 eggs in laboratory produced berried females. The berried females had similar incubation periods (6-7 days) for both the experimental setups. The hatching success of freshly hatched I zoea was 70% for laboratory produced berried females; however 71% for the wild collected berried females. The larval duration was 26.21 days for wild collected berried females and 26.50 days for laboratory produced berried females. The larval duration did not show significant difference between wild collected and laboratory produced brooders. In both experiments, survival rate was higher in I zoeal stages. The survival rate was decreased regularly when the development proceeds. The survival rate was very low when the V zoea metamorphosed into megalopa. The survival rate did not show significant difference between wild collected and laboratory produced brooders. The laboratory reared crab seeds were released successfully in Pudhupettai one of the coastal village in Parangipettai coast.

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