The Effects of Different Salinity Environments on Nutritional Composition of Eye Stalk Ablated and Non-Ablated Soft Shell Crayfish (Astacus leptodactylus Eshscholtz, 1823)

Year 2013, Volume: 27 Issue: 1, 79 - 85, 01.04.2013

Baybars Sağlamtimur

Abstract

In this study, the effects of eyestalk ablation as well as the effects of different salinities on chemical composition of meat and carotenoid levels and sensory criteria of soft shell crayfish have
been examined. Eyestalk ablated soft shell crayfish have more crude protein, crude fat and carotenoid levels compared to non-ablated ones. It has been observed that there were no differences between the levels of water and total mineral substances (p>0.05). Salinity differences constituted the differences in basic nutritional composition and carotenoid levels of soft shell crayfish (p<0.05). It has been identified that eyestalk ablation and soft shell crayfish grown in low salinity had higher levels of choice in terms of their sensory properties (p<0.05). 

Keywords

Soft Shell Crayfish, Nutritional Composition, Carotenoid, Eyestalk Ablation, Salinity

Farklı Tuzluluk Ortamlarının, Göz Saplı ve Göz Sapı Kesik Yumuşak Kabuklu Kerevitlerin (Astacus leptodactylus Eshscholtz, 1823) Besinsel Kompozisyonu Üzerine Etkileri

Abstract

Bu çalışmada, farklı ortam tuzluluklarının, göz saplı ve göz sapı kesilerek elde edilen yumuşak kabuklu kerevitlerin; temel besin kompozisyonu, karetenoyit seviyeleri ve duyusal kriterler üzerine etkileri incelenmiştir. Göz saplı kerevitlerin göz sapı kesik olanlara göre ham protein, ham yağ ve karetenoyit düzeyleri yüksektir. Su ve toplam mineral madde düzeyleri arasında farklılıklar gözlenmemiştir (p > 0.05). Tuzluluk yumuşak kabuklu kerevitlerin temel besinsel kompozisyonu ve karetenoyit düzeylerinde farklılıklar oluşturmuştur (p < 0.05). Düşük tuzlulukta ve göz sapı kesilerek yetiştirilen yumuşak kabuklu kerevitin duyusal açıdan tercih edilebilirliğinin daha yüksek olduğu belirlenmiştir (p < 0.05)

Keywords

Yumuşak Kabuklu Kerevit, Besinsel Kompozisyon, Karetenoyit, Göz Sapı Kesimi, Tuzluluk

References

• AOAC, 1995. Official Methods of Analysis of AOAC International. Arlington, VA.
• Anonymous, 2007. IBM SPSS Statistics, SPSS Program version 16.0., USA.
• Armstrong, D. A., Strange, K., Crowe, J. Knight, A., ve Simmons, M. 1981. High Salinity Acclimatıon by The Prawn Macrobrachium rosenbergii: Uptake of Exogenous Ammonia and Changes in Endogenous Nitrogen Compounds. Biol. Bull. 160: 349-365.
• Bligh, E. G. and Dyer, W.J., 1959. A Rapid Method of Total Lipid Extraction and Purification. Can. J. Biochem. Physiol., 37: 911-917.
• Foss, P., Storebakken, T., Schiedt, K., Lianen, J. S., Austrenge, E., Streiff, K., 1984. Carotenoids in Diets for Salmonids 1. Pigmentation of Rainbow Trout with the Individual Optical Isomers of Astaxanthin in Comparison with Canthaxanthin. Aquaculture, 41: 213-226.
• Holdich, D.M., 1993. A Review of Astaciculture: Freshwater Crayfish Farming. Aquat. Living Resour., 6: 307-317.
• Holdich, D.M. (Edt.)., 2002. Biology of Freshwater Crayfish. Blackwell Science Ltd., Oxford, 702 s.
• Huner, J.V., 1990. Biology, Fisheries, and Cultivation of Freshwater Crawfishes in the US. Rev. Aquatic Sci., 2: 229-254.
• Huner, J.V. (Ed.), 1994. Freshwater Crayfish Aquaculture in North America, Europe, and Australia: Families Astacidae, Cambaridae, and Parastacidae. Food Products Press, New York, USA, 312s.
• Intanai, I, Taylor, E.W., Whiteley, N.M. 2009. Effects of salinity on rates of protein synthesis and oxygen uptake in the post-larvae and juveniles of the tropical prawn Macrobrachium rosenbergii (de Man). Comparative Biochemistry and Physiology, Part A, 152: 372–378.
• Katayama, T., Hirata, K., Chichester, C.O., 1971. The Biosynthesis of Astaxanthin-IV. The Carotenoids of the Prawn, Penaeus japonicus Bate (Part1). Bull.Jpn.Soc.Sci.Fish, 37(7): 614- 620.
• Katayama, T., Katama, T., Shimaya, M., Deshimaru, O., Chichestir, C. O., 1972. The biosynthesis of the carotenoids. VIII. The Conversion of Labeled β-Carotene-15, 15'-3H2 into Astaxanthin in Prawn, Penaeus japonicus Bate. Bull. Jpn. Soc. Sci. Fish., 38: 1171-1175.
• Köksal, G., 1988. Astacus leptodactylus in Europe. In: Holdich, D. M. and Lowery, R. S. (ed.), Freshwater Crayfish: Biology, Management and Exploitation. Chapman and Hall, London, 365- 400.
• Luvizotto-Santos, R., Lee, J.T., Branco, Z. P., Bianchini, A., ve Nery, L.E.M., Lipids as Energy Source During Salinity Acclimation in the Euryhaline Crab Chasmagnathus granulata Dana, 1851 (Crustacea-Grapsidae). Journal of Experımental Zoology, 295A: 200-205.
• Okada, S., Nur-E-Borhan, S. A., Yamaguchi, K. Y., 1994. Carotenoid Composition in the Exoskeleton of Commercial Black Tiger Prawn. Fish. Sci., 60: 213-215.
• Tanaka, Y., Matsuguchi, H., Katayama, T., Simpson, K. L., Chichester, C. O., 1976. The Biosynthesis of Astaxanthin. XVIII. The Metabolism of the Carotenoids in the Prawn, Penaeus japonicus Bate. Bull. Jpn.Soc. Sci. Fish., 42: 197-202.
• Tekinşen, C. ve Keleş, A. 1994. “Besinlerin Duyusal Muayenesi”, Selçuk Üniversitesi Veterinerlik Fakültesi Yayınları, Konya, 77 s.
• Torrissen, O. J., 1984. Pigmentation of Salmonids: Effect of Carotenoids in Eggs and Start-Feeding Diet on Survival and Growth Rate. Aquaculture, 43: 185-193.
• Torrisen, O. J., Naedval, G., 1984. Pigmentation of Salmonids; Genetical Variation in Carotenoid Deposition in Rainbow Trout. Aquaculture, 38: 59-66.
• Yildiz, H.Y., Köksal, G. and Benli, A.C.K., 2005. Physiological Response of the Crayfish, Astacus leptodactylus to Saline Water. Crustaceana, 77: 1271-1276.