Nurul Ain Mohd Sharif and Noor Amalia Shaiful Kahar and Muhammad Ali Syed Hussein and Julian Ransangan and Annita Seok Kian Yong (2019) Species diversity and distribution of mud crab in Marudu Bay mangrove forest reserve, Sabah, Malaysia. Borneo Journal of Marine Science and Aquaculture, 3 (1). pp. 18-24.
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Abstract
Sabah has extensive mangrove forests surrounded by oceanic waters which provide suitable habitat for many species of animals including mud crabs (Scylla spp.). This study was conducted to obtain information on the species composition, distribution and catch per unit effort in Marudu Bay, Sabah. Samplings were done monthly in five mangrove areas along the river channels in Marudu Bay (06°33’N; 114°44’E) from October 2012 to September 2013 using collapsible baited crab traps. From a total of 1859 mud crab specimens caught in Marudu Bay, three species were identified. Scylla tranquebarica was the dominant species forming 78% of the total followed by S. paramamosain 13% and S. olivacea 8%. The number of males (n=1224) was higher compared to females (n=635) with an average sex ratio male : female of 1.0:0.5. The catch per unit effort (CPUE) showed an average value of 0.55 trap-1 day-1 and revealed a declining trend throughout the sampling. S. tranquebarica was widely distributed in all the rivers surveyed, however, it mostly occurred in near the lower reaches of the river near the areas open to the sea where average water salinity ranged from 12.98 to 14.28 ppt and the environment favoured the growth of Rhizophora sp. Other species, S. paramamosain and S. olivacea, were mostly found in upstream areas covered generally by Nypa sp. and where average water salinity varied from 6.93 to 7.50 ppt. The information on the species composition, distribution and CPUE of the mud crabs in Marudu Bay can be useful for mud crab fisheries resources management in Sabah.
| Item Type: | Article |
|---|---|
| Keyword: | Mud crab , Species composition , Species distribution , Scyllaspp. , Sabah |
| Subjects: | Q Science > QL Zoology > QL1-991 Zoology |
| Department: | INSTITUTE > Borneo Marine Research Institute |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 09 Jun 2023 11:31 |
| Last Modified: | 19 Jun 2023 15:29 |
| URI: | https://eprints.ums.edu.my/id/eprint/35589 |
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