Optimal Water Temperature and Salinity for Production of Blue Swimming Crab, Portunus pelagicus 1st Day Juvenile Crab

Mhd, Ikhwanuddin and Mohamad N., Azra and Mir A.D., Talpur and Ambok B., Abol-Munafi and Mohammad L., Shabdin (2012) Optimal Water Temperature and Salinity for Production of Blue Swimming Crab, Portunus pelagicus 1st Day Juvenile Crab. International Journal of the Bioflux Society, Volume 5 Issue 1.

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Abstract

A study was carried out to determine the optimal rearing conditions of the water temperature and salinity on the survival rate and molting of larvae stage until the 1st day juvenile crab (C1) of the blue swimming crab, Portunus pelagicus (Linnaeus, 1758). Trials were carried out at water temperature 30ºC with water salinity 30 ppt and low salinity 20 ppt, ambient water temperature between 24-28ºC with salinity 30 ppt and low salinity 20 ppt. Results of the present study shows that both water temperature and salinity significantly affected survival of the crab larvae. Replicates treated with water temperature at 30ºC with water salinity 30 ppt produced C1 juvenile with mean survival rate 0.25% ±0.21. The larvae rearing for all the other three treatments did not survive up to C1. The study shows that the zoea reached the megalopa stage in 13-14 days and reached the C1 stage in 16-17 days for the larvae rearing batch treated with water temperature at 30ºC and water salinity at 30 ppt. The study recommended that the optimal water temperature and salinity for the larvae rearing of P. pelagicus is 30ºC and 30 ppt.

Item Type: Article
Additional Information: Universiti Malaysia Sarawak, UNIMAS
Uncontrolled Keywords: Blue swimming crab, juvenile, Portunus pelagicus, salinity, water temperature, 2012, Universiti Malaysia Sarawak, UNIMAS, universiti, university, Borneo, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education, undergraduate, research
Subjects: A General Works > AC Collections. Series. Collected works
A General Works > AC Collections. Series. Collected works
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 07 May 2014 02:10
Last Modified: 28 Sep 2015 08:53
URI: http://ir.unimas.my/id/eprint/2326

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