Ingression, abundance and settlement dynamics of Penaeid shrimp postlarvae in backwaters and adjacent tidal ponds in Cochin, India

Abdussamad, E M (2006) Ingression, abundance and settlement dynamics of Penaeid shrimp postlarvae in backwaters and adjacent tidal ponds in Cochin, India. Bangladesh Journal of Fisheries Research, 10 (2). pp. 151-158.

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Abstract

Dynamics of penaeid postlarval ingression and settlement the backwaters of Cochin were studied. Postlarval recruits were constituted by Metapenaeus dobsoni(70.8-78.40%)Penaeus indicus (7 .5-24.6%), M. rnonoceros (3.8-4.6%) and P. monodon (0.3-0.4'%). Their composition varied with location and season. Postlarval abundance and ingression were influenced by diel, tidal, lunar and seasonal factors. Ingression is mainly nocturnal in all species with nearly 84% of the activity during night hours. Abundance and ingression peaked up during high tides at night with major peaks coinciding with spring rides of full and new moon. It also followed a generalized seasonal pattern with two well-defined peaks for all species. It was pre-monsoon followed by post-monsoon for P. indicus and M. momoceros and postmonsoon followed by pre-monsoon for M. dobsoni. Slze of the recruits were relatively small during pre-monsoon and post-monsoon and large during monsoon

Item Type: Article
Uncontrolled Keywords: Ingression; abundance; settlement dynamics; Penaeid shrimp postlarvae
Subjects: Crustacean Fisheries > Prawn and Prawn fisheries
Divisions: CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Subject Areas > CMFRI Brochures > CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Depositing User: Users 171 not found.
Date Deposited: 30 Oct 2010 06:18
Last Modified: 09 Sep 2015 15:28
URI: http://eprints.cmfri.org.in/id/eprint/4652

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