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Toxicological studies of herbicide Diuron and its effects on fatty acid profile of Asian Sea-bass, Lates Calcarifer
World Congress on Public Health and Nutrition
Hassan Rashid Ali, Marinah Mohd Ariffin, Mohammed Ali Sheikh, Noor Azhar Mohamed Shazili and Zainudin Bachok
The State University of Zanzibar, Tanzania and University of Malaysia Terengganu, Malaysia
ScientificTracks Abstracts: J Community Med Health Educ
Abstract
Diuron, [N-(3,4-dichlorophenyl)-N,N-dimethyl-urea] is a photosystem II (PSII) herbicide derived from urea. It is considered a priority hazardous substance by the European Commission. It is widely used as one among the antifouling paints to the boats and ships to replace Tributyltin (TBT). The antifouling paints are considered as one among the threats facing coastal resources including coral reefs in recent decades. In our previous study we measured concentration of Diuron up to 285 ng/L in coastal water of Johor Port, Malaysia. This study examined the effect of Diuron on fatty acids composition of Lates Calcarifer. The 96 h-LC50â��s of Diuron for acute exposure was determined and found to be 1.627�±0.181 mg/L. Then sub-lethal exposure (21 days) was done for Lates Calcarifer. The results showed that, non treated samples (fresh and control) were not significant different (P>0.05) and dominated by Polyunsaturated Fatty Acids (PUFA) followed by Saturated Fatty Acids (SAFA) and then Monounsaturated Fatty Acids (MUFA). The trends for treated samples (50, 30 and 10% of LC50 values) were significant different (P<0.05), with species suffered more as the dose of Diuron increased. The findings of this study demonstrate that Diuron is toxic and may affect the fatty acids composition of Lates Calcarifer even if exposed at the low levels which are normally considered safe to marine species.Biography
Hassan has completed his PhD in 2013 at the Institute of Oceanography and Environment in University of Malaysia Terengganu (UMT). He worked on the Research entitled Occurrence of booster biocides around peninsular Malaysia: Implication of its toxicity on selected coral reef organisms. Currently he is serving as a Dean at the School of Continuing and Professional Education (SCOPE) of the State University of Zanzibar (SUZA) Tanzania. He has supervised number of students and published several papers in reputable journals in the world.
Email: hassanrashidali@yahoo.com
