The effects of age and individual size on the Fatty Acids and Elemental Composition of Nemipterus Randalli Russell, 1986 from Mersin Bay, Turkey

Öz

In this study, the effects of the age and individual size on total lipid content, fatty acids and elemental composition of Nemipterus randalli caught from the Mersin Bay were determined. The lipid content of all age groups was found at similar levels. However, the highest lipid level was determined in the 3+ age group (2.85%) while the lowest level was found in the 2+ age group (2.75%). Dominant fatty acids for each age group of N. randalli are palmitic acid (c16: 0), stearic acid (c18: 0), oleic acid (c18: 1), cetoleic acid (C22: 1 n11), eicosapentaenoic acid (EPA, C20: 5 n3), and docosahexaenoic acid (DHA, C22: 6 n3). The highest palmitic acid level was found in 3+ age group (20.45%) whereas the highest stearic acid level was found in the 2+ age group (15.00%). The highest oleic acid level was observed in the 3+ age group (6.47%) while the highest level of the cetoleic acid was observed in the 2+ age group (7.13%). The highest EPA and DHA were found to be 5.49% and 22.02% in the 1+ age group. Macro elements (Na, Mg, P, K), trace elements (Cu, Zn, Fe) and potentially toxic metals (Cd, Cr, Pb, As) were investigated in muscle tissue and the levels of Cr, Cu, Cd and Pb were not evaluated since their levels were below the detection limit of the device (ICP-MS). Element level of muscle tissue was changed according to different age groups as K>P>Na>Mg>Ca>Fe>As>Zn, respectively. For 1+ age group Na: 2685.1, Mg: 974.3, P: 11492.0, K: 24557.0, Ca: 348.6, Fe: 27.6, Zn: 8.4, As: 44.6 (μg g-1dw). For the 2+ age group Na: 4959.7, Mg: 1146.9, P: 11362.0, K: 21342.0, Ca: 725.5, Fe: 41.7, Zn: 10.3, As: 39.5 (μg g-1dw). For the 3+ age group Na: 7758.8, Mg: 1539.8, P: 11283.0, K: 19567.0, Ca: 1194.7, Fe: 53.3, Zn: 9.2, As: 275.0 (μg g-1dw).

Anahtar Kelimeler

• Mersin Bay
• Nemipterus randalli
• Age
• Lipid
• Fatty acids

Kaynakça

1. Baysal, A. (2004). Beslenme. Ankara: Hatipoğlu Yayınevi.
2. Bilecenoglu, M. ve Russell, B.C. (2008). Record of Nemipterus randalli Russell, 1986 (Nemipteridae) fromIskenderun Bay, Turkey. Cybium, 32, 279–280.
3. Bligh, E. G. ve Dyer, W. J. (1959). A rapidmethod of total lipid extractionand purification. Can. J. Biochem. Physiol, 37, 911-917.
4. British Nutrition Foundation, Unsaturated Fatty Acids. Nutritional and Physiological Significance. Report of British Nutrition Foundation, Chapman & Hall, London.
5. Canlı, M. ve Atlı, G. (2003). The Relationships Between Heavy Metal (Cd, Cr, Cu, Fe, Pb, Zn) Level Sand the Size of Six Mediterranean Fish Species. Environmental Pollution, 121, 129-136.
6. Chung, S.W.C., Tong, S.K., Xiao, Y. ve Ho, Y.Y. (2015). Methylmercury and long-chain n-3 fattyacids of 88 fish species commonly consumed in Hong Kong. Journal of Analytical Science and Technology, 6:5, 1-9.
7. Farrag, M. M., Elhaweet, A. A. K., & Akel EKhA, M. M. (2015). Stock Status of Puffer Fish Lagocephalus sceleratus (Gmelin, 1789) Along the Egyptian Coast, Eastern Mediterranean Sea. American Journal of Life Sciences. Special Issue: New Horizons in Basic and Applied Zoological Research, 3(6-1), 83-93.
8. Erguden, D., Turan, C., Gurlek, M., Yaglioglu, D. ve Gungor, M. (2010). Age and Growth of the Randall’s Threadfin bream Nemipterus randalli (Russell, 1986), A Recent Lessepsian Migrant in Iskenderun Bay, Northeastern Mediterranean. Journal of AppliedIchthyology, 26, 441–444.

9. Golani D. ve Sonin O. (2006). The Japanese threadfin bream Nemipterus japonicus, a new IndoPacific fish in the Mediterranean. Journal of Fish Biology, 68, 940–943.
10. Gülşahin, A. ve Kara, A. (2013). Record of Nemipterusrandalli Russell, 1986 from the Southern Aegean Sea (Gökova Bay, Turkey). Journal of Applied Ichthyology, 29, 933-934.
11. Ichibara, K., Shibahara, A., Yamamoto, K. ve Nakayama, T. (1996). An improved method for rapid analysis of the fatty acids of gly cerolipids. Lipids, 31, 535-539.
12. Kaya, Y., Duyar, H. A. ve Erdem, M. E. (2004). Balık yağ asitlerinin insan sağlığı için önemi. Journal of Fisheries & Aquatic Sciences, 21 (3-4), 365- 370.
13. Kayahan, M. (2005). Lipitler. Gıda Kimyası, 133-147.
14. Kesler, S. E. (1994). Mineral Resources, Economics and the Environment. New York: Macmillan College Publishing Company, Inc., s 223, USA.
15. Kuzu, S. (2005). Farklı avlama mevsimlerinin İskenderun Körfezi’nde avlanan keserbaş barbun (Mullus barbatus, L., 1758)’un aminoasit ve yağ asitleri kompozisyonuna etkileri. Yüksek lisans tezi, Çukurova Üniversitesi, Adana.
16. Külcü, M. A., Ayas D., Köşker, R. A. ve Yatkın, K. (2014). The Investigation of Metal and Mineral Levels of Some Marine Species from the Northeastern Mediterranean Sea, J Mar BiolOceanogr, 3, 2.
17. Lambertsen, H. Fresh Fish Quality and Quality Changes, H. Huss (ed.), FAO 17-19, Rome, 1978, 1998.
18. Lelli S., Colloca F., Carpentieri P. & B.C. Russell, (2008). The threadfin bream Nemipterus randalli Russell, 1986 (Perciformes: Nemipteridae) in the Eastern Mediterranean Sea. J. Fish Biol.: 73:740-745.
19. Ozogul, Y.; Ozogul, F.; Çiçek, E.; Polat, A.; Kuley, E., GC-capillary analysis of fatty acids in 34 seawater fish species. J. Food Sci. Nutr. 2009, 60, 464– 475.
20. Por, F. D. (1978). Lessepsian migration: The influx of Red Sea biota into the Mediterranean by Way of the Suez Canal. Springer-Verlag, 223-228.
21. Turan, H. Kaya, Y. ve Sönmez, G. (2006). Balık etinin besin değeri ve insan sağlığındaki yeri. EÜ Su Ürünleri Derg, 23 (1-3), 505-508.
22. Türkmen, A., Türkmen, M., Tepe, Y. ve Akyurt, İ. (2005). Heavy Metals in Three Commercially Valuable Fish Species from Iskenderun Bay, Northern East Mediterranean Sea, Turkey. Food Chemistry, 91, 167-172.
23. Ulbricht, T. L. V. ve Southgate, D. A. T. (1991). Coronary heart disease: seven dietary factors. Lancet, 338, 985-992.
24. Weihrauch, J. L., Posati, L. P., Anderson, B. A. ve Exler, J. (1975). Lipid conversion factors for calculating fatty acid contents of foods. Journal of the American Chemists’ Society, 54, 36-40.