Analysis of trace metals (Ni Cu and Zn) in water mud and various tissues of mud crab Scylla olivacea from Setiu Wetlands Terengganu Malaysia

Nur Syafinaz Mohd Razali, . and Wan Bayani Wan Omar, . and Fathin Noor Aziera Mohd Ubaidillah, . and Nakisah Mat Amin, . and Nurul Huda Abd Kadir, . and Mhd Ikhwanuddin, . Analysis of trace metals (Ni Cu and Zn) in water mud and various tissues of mud crab Scylla olivacea from Setiu Wetlands Terengganu Malaysia. pp. 5-14. ISSN 1823-8556

Mud crabs belonging to the genus Scylla from the family of Portunidae are important crustaceans of the mangrove ecosystem including Setiu Wetlands Terengganu. Scylla olivacea is one of the three species of mud crabs that are indigenous to Setiu Wetlands and are commonly found in the nypa palm at the lagoon areas. The mud crabs samplings were done during low tides at three locations designated as A B and C alongside Setiu Wetlands for trace metal analysis (Ni Cu and Zn). Samples of water and mud at the designated sampling points were analysed for trace metals by using an Inductive Couple Plasma-Mass Spectrometry (ICP-MS) gauge. As for the mud crabs various parts of their body (gills hepatopancreas and claws) were being separated prior to trace metal analysis in each of the tissue. The average concentration for Ni Cu and Zn in water was 6.9200.24 g/L 81.28028.70 g/L and 13.4007.50 g/L respectively. It was found that in the mud samples the average values of Ni Cu and Zn were 5.8330.73 ug/g 4.7820.77 ug/g and 17.9262.29 ug/g. The crab tissues analysis shows that the average values of these trace metals in gills were 4.8111.32 ug/g (Ni) 78.48235.37 ug/g (Cu) and 96.80322.28 ug/g (Zn) whereas in hepatopancreas the average values were 4.1312.50 ug/g (Ni) 90.90325.56 ug/g (Cu) and 166.9630.19 ug/g (Zn). In the claws tissues the average value of Ni (3.5500.955 ug/g) Cu (66.23552.30 ug/g) and Zn (170.60712.22 ug/g). The presence of Ni Zn and Cu in claws of mud crabs was significantly correlated with the metal content in the mud (r in range between 0. 975 and 0.999). Zinc content in the mud was also correlated significantly with Zn content in hepatopancreas (r 0.9205) implying that the main source for metals accumulation in tissues of mud crabs comes from the mud surrounding their burrows. The data obtained provide the current status of the trace metal contents in wild mud crabs in relation to the environmental conditions of the habitat.

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Abstract

Mud crabs belonging to the genus Scylla from the family of Portunidae are important crustaceans of the mangrove ecosystem including Setiu Wetlands Terengganu. Scylla olivacea is one of the three species of mud crabs that are indigenous to Setiu Wetlands and are commonly found in the nypa palm at the lagoon areas. The mud crabs samplings were done during low tides at three locations designated as A B and C alongside Setiu Wetlands for trace metal analysis (Ni Cu and Zn). Samples of water and mud at the designated sampling points were analysed for trace metals by using an Inductive Couple Plasma-Mass Spectrometry (ICP-MS) gauge. As for the mud crabs various parts of their body (gills hepatopancreas and claws) were being separated prior to trace metal analysis in each of the tissue. The average concentration for Ni Cu and Zn in water was 6.9200.24 g/L 81.28028.70 g/L and 13.4007.50 g/L respectively. It was found that in the mud samples the average values of Ni Cu and Zn were 5.8330.73 ug/g 4.7820.77 ug/g and 17.9262.29 ug/g. The crab tissues analysis shows that the average values of these trace metals in gills were 4.8111.32 ug/g (Ni) 78.48235.37 ug/g (Cu) and 96.80322.28 ug/g (Zn) whereas in hepatopancreas the average values were 4.1312.50 ug/g (Ni) 90.90325.56 ug/g (Cu) and 166.9630.19 ug/g (Zn). In the claws tissues the average value of Ni (3.5500.955 ug/g) Cu (66.23552.30 ug/g) and Zn (170.60712.22 ug/g). The presence of Ni Zn and Cu in claws of mud crabs was significantly correlated with the metal content in the mud (r in range between 0. 975 and 0.999). Zinc content in the mud was also correlated significantly with Zn content in hepatopancreas (r 0.9205) implying that the main source for metals accumulation in tissues of mud crabs comes from the mud surrounding their burrows. The data obtained provide the current status of the trace metal contents in wild mud crabs in relation to the environmental conditions of the habitat.

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Item Type:	Article
AGROVOC Term:	Crabs
AGROVOC Term:	Scylla olivacea
AGROVOC Term:	Portunidae
AGROVOC Term:	Crustacea
AGROVOC Term:	Crustaceans
AGROVOC Term:	Mud
AGROVOC Term:	Water
AGROVOC Term:	Mangroves
AGROVOC Term:	Ecosystems
AGROVOC Term:	Mass spectrometry
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/25007

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