1Department of Fishery, Faculty of Fisheries and Environment, Gorgan University of Agricultural Science and Natural Resources
2Fisheries Research Organization
During this study from December 2009 to November 2011, 363Deep flounder fish were caught and their weight and length were measured. The caught fish included 18 males, 200 females and 155 immature fishes. The mean, maximum and minimum total lengths were 264 ± 57 (mean ± SD), 415 mm and 115 mm respectively. The mean, maximum, and minimum total weights for this species were 238 ± 150 g, 827 g and 14 g respectively. The calculated length-weight relationships were W=0.000007FL3.09 (n=200, R2= 0.96) for the female, W=0.00002FL2.90 (n=18, R2=0.94) for the male and W=0.000009FL3.04 (n=363, R2 =0.96) for total fish. With a verified calculated b as 3 Student t-test showed no significant difference between calculated b and 3 (P>0.05), demonstrating that the growth pattern is isometric. Population parameters calculated for total fish were L∞= 42 (cm); K= 1 (year-1); t0= -0.14 and Ф’= 3.24. Based on the results, this species is classified as mediate vulnerable group fish.
Bangenal, T., 1978. Method for assessment or fish production in freshwater .blackweu scientific pub, oxf, Lon., 365.
Bawazeer, A. S., (1989). The stock and fishery biology of Indian flathead (wahar) Platycepahlusindicus (Linnaeus), family Platycephalidae in Kuwait waters. Kuwait Bull. Mar. Sci. 10:169-178.
Begg, G.A.; Sellin, M. J., (1998). Age and growth of school mackerel (S. queenslandicud) and spotted mackerel (S. monroi) in Queenslan east-coast waters with implications for stock structure. Mar. Freshwater Res., 49: 109-120.
Biswas, S. P., (1993). Manuel of methods in fish biology, fish biology & Ecology laboratory, Dibruyarh university,Dibrugarh. 157.
Buxton, C. D., (1990). The reproductive biology of Chrysoblephus laticeps and C. cristiceps (Teleostei: Sparidae). Journal of Zoology, 220: 497-511.
Cheung, W.; Pitcher, T.; Pauly, D., (2004). A fuzzy logic expert system to estimate intrinsic extinction vulnerabilities of marine fishes to fishing. Biological conservation ,124(97-111).
Diaz, L. S.; Roa, A.; Garcia, C. B.; Acero, A.; Navas, G., (2000). Length-weight relationship of demersal fishes from the upper continental slope off Columbia. NAGA, 23(3), 23-25.
Devaraj, M., (1981). Age and growth of three species of seerfishes Scomberomorus commerson, S. guttatus and S. lineolatus. Indian J. Fish., 28(1/2): 104-127.
Gayanilo, J r. F. C.; Soriano P.; Pauly, D., (1996). The FAO-ICLARM Stock Assessment Tools (FiSAT) User s gu ide. FAO Compu t er ised In format ion Ser ies (F ish er ies), No. 8. Rome, FAO, 266.
Gayanilo, Jr.; Pauly, F. C. D., (1997). FAO -ICLARM stock assessment tools. Reference manual. ICLARM International Centre for Living Aquatic Resources Management. Food and Agricultural Organisation of the United Nations. Rome, 1997, 262.
King, M., (2007). Fisheries biology & assessment and management .Fishing news press, 340.
Haimovici, M.; Velasco, G., (2000). Weight
relationship of marine from southern Brazil. Length. NAGA 23 (1), 14-16.
Hashemi, S. A. R.; Taghavimotlagh, S. A.; Eskandary, G. R., (2011). To determine the ecological
relationship amongst economic fishes within the Persian Gulf waters. South of Iran aquaculture fishery research center, Ahwaz. Iran. 33.
Marais, J.F.K., (1984). Feeding ecology of major carnivorous fish from four eastern Cape estuaries. S. Afr. J. Zool. 19(3):210-223.
Martine,W. R., (1949). The Mechanics of environmental control of body form in fishes.Univ.Toronto stud.BioI.58:1-91.
Naik, S. K.; Shanbhogue, S. L.; Jayabalan, N.; Krishna-Bhat, C., (1990). Observations on Platycephalusindicus from the NetravatiGurpur Estuary, Mangalore. Environ. Ecol. 8 (4):1311-1313.
Nasir, N. A., (2000). The food and feeding relationships of the fish communities in the inshore waters of Khor Al-Zubair, northwest Arabian Gulf. Cybium 24 (1):89-99.
Parsamanesh, A.; Kashi, M. T., Eskandari, G. H., (2000). Stock assessment of commercial fish in coastal waters of Khuzestan province. Fishery Research Institute, 70.
Pauly, D., (1979).Gill size and temperature as governing factors in fish growth: a generalization of von Bertalanffys growth formula.Berichte aus dem institute fuer meereskunde,63,Kiel university,Kiel.
Pauly, D.; David, N., (1981). ELEFAN-I a basic program for the objective extraction of growth parameters from Length frequency data. Meeresforschung/Rep.Mar. Res.28 (4):205-211.
Pauly, D.; Munro, J.L., (1984). Once more, on the composition of growth in fish and in vertebrates. Fishbyte 2 (1): 21.
Smith, M. M.; Heemstra, P.C., (1986). Smith's Sea Fishes. Springer Velage, Berlin Heidelberg, New York, London, Paris, Tokyo, pp: 1047.
Sparre, P.; Venema, S. C., (1998). Introduction to tropical fish stock assessment, FAO Fisheries technical paper, Roma, 450 pp.
Tesch, F. W., (1968). Age and growth in methods for assessment of fish production in fresh water.Ed.W.E.Ricker.IBP Handbook No.3.
Wu, R. S. S., (1984). The feeding habits of seven demersal fish species in a subtropical estuary. Asian Mar. Bio. 1:17-26.
Zar, J. H., (1996). Biostatistical analysis. 3rd edition. Prentice-Hall Inc., New Jersey,USA. ,662.