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Articles by Peyman Eghtesadi-Araghi
Total Records ( 3 ) for Peyman Eghtesadi-Araghi
  Nooshin Sajjadi , Peyman Eghtesadi-Araghi , Shahla Jamili , Mehri Hashtroodi , Sahar Farzadnia and Ali Mashinchian
  Problem Statement: Fatty acid content and composition in mollusks is a function of their feeding diversity. Chabahar bay located in the northern part of Oman sea in Indian ocean provides high rates of primary productivity and a diverse food source for mollusks in this area. Identification of fatty acid compositions of Chiton lamyi and study their seasonal changes in the intertidal zone of Chabahar bay. Study the meat quality by n-6: n-3 ratios calculation throughout the year. Approach: Chiton lamyi species analyzed seasonally for its fatty acid compositions in foot and internal tissue separately by GC/MS chromatography. Temperature and nutrients measured monthly for evaluating their effects on investigated seasonal variations of fatty acids. Pearson analysis showed effects of measured environmental factors on studied fatty acids composition. n-6: n-3 ratio calculated seasonally in order to study meat quality. Results: Thirteen fatty acids identified in foot and internal tissue of Chiton lamyi. The major Saturated Fatty Acids (SFAs) were myristic, palmitic and stearic acids. The major Mono-Unsaturated Fatty Acids (MUFAs) were palmitoleic, oleic and 11-eicosenoic acids and Poly-Unsaturated Fatty Acids (PUFAs) were linoleic, eicosapentaenoic and arachidonic acids. Palmitic acid was the most abundant in this species. Fatty acid contents of foot and internal tissue of Chiton lamyi were similar but their seasonal variations were different. Pearson analysis showed correlation among palmitic and oleic acids with silicate; oleic acid with phosphate; Linoleic and arachidonic acids with nitrate in Chiton lamyi internal tissues, but no correlation observed in foot. Although temperature showed correlation with heptadecanoic and methyl-heptadecanoic acids in Chiton lamyi foot, no correlation found in internal tissues. Also, n-6: n-3 ratio calculations showed domination of n-3 fatty acid over n-6 only in spring. Conclusion: Fatty acid variations were not same at different organs and environmental factors could have opposite effects on them in this species. Also, n-6: n-3 ratio showed the lack of food loads throughout the year except in spring for this species. These findings can lead the best exploitation periods for such marine mollusks.
  Peyman Eghtesadi-Araghi
  This study reviews the necessary considerations for design of national action plan on ballast water management in Iranian territorial seas. Introduction of harmful aquatics and different kinds of pathogens into the new environments through the ships’ ballast water is one the four greatest threats to the world’s oceans and seas. Therefore, studying the harmful ecological, economic impacts of these organisms entrances into the marine environments and studying the reason(s) of theirs entrances has been observed as a major issue for scientist and international societies’ attention. The purpose of this study is inspecting environmental and ecological impacts of ships’ ballast water discharges into the Southern waters of I.R. Iran seas, which in turn causes the introduction of alien species and finally presenting reasonable and practical solutions for minimizing undesirable impacts and offering solutions for managing, treating and controlling ballast water according to the international conventions, regulations and treaties. Herein, we review the necessary marine ballast management strategies and legislation that have to be implemented nationally and locally. It is recommended that regular and emergency ballast water exchange zones and to be defined in framework of D1-guideline observance and notification on economically important resources, respectively.
  Peyman Eghtesadi-Araghi and Kazem Darvish Bastami
  This study presents results of study on some of the important marine environmental parameters on fatty acid composition in mollusks. Lipids are main source of metabolic energy and necessary material for the formation of cell and tissue membranes. They are very important in the physiology of marine organisms. Animals only have a limited capacity to synthesize and modify fatty acids; the fatty acid composition of their lipids is markedly influenced by taxonomic relations, diet, reproductive status, habitat, environmental parameters and etc. Furthermore, the relative ease with which lipids can be assimilated, in comparison with other classes of macromolecules, means that lipid storage is a relatively direct process, allowing rapid accumulation when foods rich in lipids are consumed. In this study, we review some of the rules of fatty acids in mollusk.
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