Aquaculture Sciences

Aquaculture Sciences

The study of changes in salinity on some biological characteristics of crabs Thalamita crenata

Document Type : Original Article

Authors
Parvaneh Shahnavazi
Mehran Loghmani
Mohammad Mansour Tootooni
Department of Marine Biology, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran.
Abstract
Crabs are economically important marine organisms and are rich sources of protein, vitamins, minerals, glycogen, and free amino acids. In this study, 60 specimens of the crab Thalamita crenata were collected from the coast of Tis (Chabahar Bay) and transferred to 60-liter tanks with salinities of 32, 34, 36 (control), and 38 g/L. Total fat content, body weight, and carapace length were measured on days 1 and 21. On day 1, the highest total fat content (5.13±0.23%) was recorded in treatment 2, whereas on day 21, the highest value (6.10±0.21%) was observed in treatment 1. Throughout the study, male specimens exhibited higher average values of body weight, carapace length, and total fat content compared to females. On day 1, no significant correlation was found between salinity and fat content, carapace length, or weight in T. crenata (P>0.05), although a significant positive correlation was observed between carapace length and weight (P<0.01). By day 21, the correlations between salinity and total fat content, as well as between carapace length and weight, were both statistically significant (P < 0.01). These findings suggest that salinity fluctuations influence the total fat content of T. crenata, and salinity should be considered a key factor in the reproduction and aquaculture of this species
Keywords
Growth index
Makoran Sea
Thalamita crenata
Chabahar Bay
شکوری آ.، سواری ا.، نبوی س.م.ب.، یاوری و. 1387. بررسی شاخص‌های تنوع و ارتباط آنها با فاکتورهای محیطی در پرتاران برخی از خورهای منطقه ماهشهر. مجله پژوهش و سازندگی. 4(1): 80.
محمودی س . ۱39۲. شناسایی و تعیین درصد فراوانی مرجان­های منطقه جزرومدی ساحل تیس در خلیج چابهار، پایان­نامه کارشناسی ارشد در رشته زیست شناسی دریا، دانشگاه دریانوردی و علوم دریایی چابهار. 84 صفحه.
قربانی ن.، سیف آبادی ج.، عوفی ف.،  ابطحی ب.1381. ارتباط طول کاراپاس و عرض کاراپاس با وزن در خرچنگ شناگر آبی pelagicus،Portunus ،در آبهای ساحلی استان بوشهر. مجله علوم دریایی ایران، 2(1): 66-59.
نادری م.، پیشه ورزاد ف. 1398. بررسی شکل شناختی لانه‌های خرچنگ (Miers, 1882)  Ocypode rotundata در سواحل جنوب‌غربی جزیره قشم. مجله علمی شیلات ایران، 28(4): 167-163.
Ashton E.C., MacIntonsh D.J., Hoghart P.J. 2003. A baseline study of the diversity and community ecology of crab and molluscan macrofauna in the Sematan mangrove forest, Sarawak, Malaysia. Journal of Tropical Ecology 19, 127-142.
Bagenal T.B., Tesch F.W.1978. Methods for Assessing Fish Production in Freshwaters. In: Bagenal, T.B (Eds.), 3rd Edn. No.3, Blackwell scientific Publication Ltd., London, pp.: 101- 136.
Haimovichi M., Velasco G. 2000. Length-Weight relationship of marine fishes from Southern Brazil. Naga, The ICLARM Quarterly 23(1), 19-23.
Khot M., Jaiswar A. K.2018. Carapace length-weight and Carapace width-weight relationship and condition factor of intertidal crabs from Maharashtra, IndiaInternational Journal of Fisheries and Aquatic Studies 6, 48-51.
Long X., Wu X., Zhu S., Ye H., Cheng Y., Zeng C. 2019. Salinity can change the lipid composition of adult Chinese mitten crab after long-term salinity adaptation. PLoS One 14(7), e0219260.‏
Manush S. M., Pal A. K., Chatterjee N., Das T., Mukherjee S. C. 2004. Thermal tolerance and oxygen consumption of Macrobrachium rosenbergii acclimated to three temperatures. Journal of Thermal Biology 29(1), 15-19.‏
Nandi N.C., Pramanik S.K. 1994. Crabs and Crab Fisheries of Sundarban. Hindustan Publishing Corporation, Delhi, India, pp. 1-192.
Paital B., Chainy G.B.N. 2010. Antioxidant defenses and oxidative stress parameters in tissues of mud crab (Scylla serrata) with reference to changing salinity. Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology 151(1), 142-151.‏
Poore G.C.B. 2004. Marine Decapod Crustacea of Southern Australia, A guide to identification. CSIRO Publishing: Melbourne. 574 p.
Ricker W.E. 1973. Linear regressions in fishery research. Journal of the Fisheries Board of Canada 30, 409-434.
Sadeghi P., Savari A., Movahedinia A.,  Safahieh A., Azhdari D. 2014. An assessment of hematological and biochemical responses in the tropical fish Epinephelus stoliczkae of Chabahar Bay and Gulf of Oman under chromium exposure: ecological and experimental tests. Environmental Science and Pollution Research 21, 6076-6088
Shock B.C., Foran C.M., Stueckle T. A. 2009. Effects of salinity stress on survival, metabolism, limb regeneration, and ecdysis in Uca pugnax. Journal of Crustacean Biology 29(3), 293-301.‏
Soundarapandian P., Ilavarasan N., Varadharajan D., Suresh B., Gangatharan K. 2010. Effect of Salinity on Growth and Survival of Portunid Crab, Charybdis eriata Larvae.‏ International Journal of Pharmaceutical & Biological Archives 4(1), 150-156.
Syafaat M.N., Ma H., Ikhwanuddin M. 2019. Effects of different feeding regimes on larvae and crablets of purple mud crab, Scylla tranquebarica (Fabricius, 1798). Aquaculture Reports 15, 100231.
Varadharajan D., Soundarapandian P., Pushparajan N. 2013. Effect of physico-chemical parameters on crabs' biodiversity. Journal Marine Science and Research Development 3(1), 3-11.
Zafar M., Siddiqui M.J.H., Hoque M.A. 2004. Biochemical composition in Scylla serrata (Forskal) of Chakaria sundarban area. Bangladesh. Pakistan Journal of Biological Sciences 7, 2182-2186.
Aquaculture Sciences
Volume 13, Issue 1
May 2025
Pages 37-45