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https://ptsldigital.ukm.my/jspui/handle/123456789/499888| Title: | Determination of heavy metals concentration in Acetes shrimps from Peninsular Malaysia coastal waters |
| Authors: | Mustafa Hassn A Rahouma (P50777) |
| Supervisor: | Zaidi Che Cob, Prof. Dr. |
| Keywords: | Heavy metals Acetes shrimps Peninsular Malaysia Coastal waters Dissertations, Academic -- Malaysia |
| Issue Date: | 11-Apr-2016 |
| Description: | Heavy metals pollution is one of the hazards to human health, and example source of heavy metals is from the ingestion of contaminated seafood products. The aim of this study is to investigate some aspects of the biology and ecology of Acetes shrimp population in Peninsular Malaysia coastal waters and to determine the concentration and variations of heavy metals in the shrimp according to species, locations and seasons. Apart from that, acute toxicity test for aluminum, cadmium and manganese were also investigated to determine the LC50 and LT50 values of Acetes indicus. Four different sampling locations were selected namely Klebang Besar, Malacca; Tanjung Dawai, Kedah; Mersing, Johor; and Marang, Terengganu. The essential heavy metals such as Se, Cr, Zn, Ni, Mn and Fe, and non-essential heavy metals such as Cd, Pb, As and Al in the Acetes and in the seawater were determined, using inductively coupled plasma mass spectrometer (ICP-MS). In total five species of Acetes were recorded i.e. A. indicus, A. japonicus, A. intermedius, A. serrulatus and A. vulgaris. Length weight analyses of the most abundant species (A. indicus) showed both males and females have negative allometric relationships. Heavy metals analyses showed significant variations between species, locations and seasons. Generally higher concentrations of heavy metals were recorded in Malacca, and lowest in Johor. The concentrations were also higher in dry season compared with wet season (P<0.05). Regarding the species, highest concentration of heavy metals was recorded in A. indicus while the lowest in A. serrulatus. The heavy metals levels were however still below the maximum permissible limit recommended by Malaysia Food Regulation (MFR) 1985 and international standards for human health. Acute toxicity testing on A. indicus showed the LC50 value increased with decreased exposure times, and the LT50 value increased with decreasing metal exposure concentration, for all metals tested. In conclusion results from this study showed that different Acetes species accumulate metals at different levels according to the study sites and seasons. This study highlights the potential dangers of heavy metal accumulation in this highly consumed Acetes species throughout Malaysia. Further research should be conducted on other commerically important marine species as well as the extent of heavy metal accumulation among human population around Malaysia.,Ph.D. |
| Pages: | 176 |
| Publisher: | UKM, Bangi |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_85407+SOURCE1+SOURCE1.0.PDF Restricted Access | 81.97 kB | Adobe PDF |  View/Open |
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