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You are here: Home Department of Zoology People Siti Akmar Khadijah Ab.Rahim, Dr

Research Interests

Since 1998, my research interest has focused on the study of larval biology and mass-production of juvenile of fisheries important marine invertebrates.  My previous work is about the larval metamorphosis of two species of edible sea urchins.  Currently, I am involved with a research group that works on razor clams or ambal (Family Solenidae, Solen spp.), the commercial bivalve species in Sarawak.

Razor clams prefer intertidal sandy beaches or sandy bars, especially the western part of Sarawak.  There are three known species of genus Solen found here, which were locally known as 'Ambal Biasa', 'Ambal Riong' and 'Ambal Jernang'.  Unfortunately, it has been reported that razor clam is now over-exploited and faced depletion of natural stocks.  Therefore, there is an urgent need to study the potential of razor clam culture and to mass-produce this species using aquaculture techniques.

Preliminary data is being gathered in identifying potential species of razor clam, sites for aquaculture and also maintaining the natural razor clam stocks.  At this stage, we focus on mapping the diversity and population dynamic of several razor clam species in Kuching Bay.  Simultaneously, detail works is being carried out on their life cycles through preliminary data collection related to the spawning season.  The next step is to perform the artificial fertilization and establish the larval culture method.  By establishing techniques to mass-produced razor clam spats and consequently releasing them to their natural habitats, we predict that the natural resource can be maintained or increased in the future.  One of the most important final aims of this project is to set up Solen spp. aquaculture to meet the market demand and to guarantee adequate supply of razor clams.  An integrated approach using community-based management seems to be favourable for sustainable of razor clam resources.

Publication

Selected publications - Refereed Journals

S. A. K. A. Rahim & C. Y. Tan. (in press). Study on the natural stocks of razor clam (Family: Solenidae) in Kuching Bay, Sarawak. Journal of Sustainability Science and Management.

S. A. K. A. Rahim, J.-Y. Li & H. Kitamura. 2004. Larval metamorphosis of the sea urchins, Pseudocentrotus depressus and Anthocidaris crassispina in response to microbial films. Marine Biology, 144: 71-78

S. A. K. A. Rahim, J.-Y. Li, C. G. Satuito & H. Kitamura. 2004. The role of diatom-based film as inducer of metamorphosis in larvae of two species of sea urchins Pseudocentrotus depressus and Anthocidaris crassispina. Sessile Organisms, 21(1): 7-12

J.-Y. Li, S. A. K. A. Rahim, C. G. Satuito & H. Kitamura. 2004. Combination of macroalgae-conditioned water and periphytic diatom Navicula ramosissima as an inducer of larval metamorphosis in the sea urchins Anthocidaris crassispina and Pseudocentrotus depressus. Sessile Organisms, 21(1): 1-6

J.-Y. Li, S. A. K. A. Rahim, C. G. Satuito & H. Kitamura. 2004. Characterization of the active substances in water conditioned by the coralline red alga Corallina pilulifera as inducers of metamorphosis in larvae of the sea urchin Anthocidaris crassispina. Sessile Organisms, 21(2): 41-46.

Selected publications - Proceedings

Ruhana, H., S. A. K. A. Rahim & L. Nyanti. 2007. Razor clams (Solen spp.) of Kuching Bay, Sarawak, Malaysia. Paper presented at the Conference on Biodiversity: Balancing Conservation and Production – Case Studies from the Real World, University of Tasmania, Launceston. 6 pp.

A. M. R. Rinyod & S. A. K. A. Rahim. 2007. Preliminary study on reproduction of the Razor clam, Solen regularis (Dunker, 1862) in Buntal and Asajaya Laut, Kuching Bay, Sarawak. Abstract of oral presentation at the 12th Biological Sciences Graduate Congress, Universiti Malaya, Kuala Lumpur.

D. Kanakaraju & S. A. K. A. Rahim. 2008. Razor clam for aquaculture. Department of Chemistry Bulletin, Vol. 4/2008:4.

A. M. R. Rinyod & S. A. K. A. Rahim. 2009. Study on the reproductive cycle of Solen regularis (Dunker, 1862) in Asajaya Laut, Sarawak and its relation to the environmental conditions. In M. T. Latif et al. (Eds.), Transboundary Approach in Sustainable & Integrated Marine Resource Management. Proceedings of the International Conference on Marine Ecosystem, 26-28 May 2009 (156-163). Bangi, Malaysia: Marine Ecosystem Research Centre, Universiti Kebangsaan Malaysia.

D. G. Gelian & S. A. K. A. Rahim. 2009. Induce spawning techniques for the razor clam (Solen regularis) of Kuching Bay, Sarawak. In M. T. Latif et al. (Eds.), Transboundary Approach in Sustainable & Integrated Marine Resource Management. Proceedings of the International Conference on Marine Ecosystem, 26-28 May 2009 (156-163). Bangi, Malaysia: Marine Ecosystem Research Centre, Universiti Kebangsaan Malaysia.

S. A. K. A. Rahim & Ruhana, H. 2009. Razor clam fishery in Kuching and Samarahan Divisions, Sarawak. In M. T. Latif et al. (Eds.), Transboundary Approach in Sustainable & Integrated Marine Resource Management. Proceedings of the International Conference on Marine Ecosystem, 26-28 May 2009 (156-163). Bangi, Malaysia: Marine Ecosystem Research Centre, Universiti Kebangsaan Malaysia.

 

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