Mehmet Salih ÇELİKKALE, Metin TİMUR, DEVRİM MEMİŞ, ERTAN ERCAN

Influence of aclimation to the cold water on growth rate of russian sturgeon juveniles (Acipenser gueldenstaedtii, Brandt and Ratzenburg, 1833)

Anahtar Kelimeler:

iklime uyum, mersin balığı, Acipenser gueldenstaedti

In this study, sturgeon juveniles (Acipenser gueldenstaedtiï) were reared in open heated water at 18-22 $^\circ$ C in hatchery conditions. Before they were transported to the Sakarya River, they had been acclimated directly and gradually from the heated water to the cold water (in 12.80$^\circ$ C) tanks. During this study, condition factor, specific growth rate, feeding behaviour and mortality of sturgeon juveniles were investigated At the end of the study, live weight gains of sturgeon juveniles increased, but condition factor was decreased. No mortalities were recorded at two experimental groups. After the adaptation period of the experiment, in order to restore for sturgeon juveniles populations on the Black Sea coast of Turkey, sturgeon juveniles were released safely into the Sakarya River in 27 March 2001. This species could be good candidate for aquaculture in brackish waters owing to the recent success in artificial reproduction.

Keywords:

acclimatization, sturgeons, Acipenser gueldenstaedti,

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Anon. 2000: http://www.cites.org/eng/dbase/fauna-

Artyukhin, E.N. and Zarkua, Z.G. 1986. Taxanomic status of the sturgeon in the Rioni river (Black Sea Basin). J. Ichthyol. 26: 29-36.

Billard, R. and Lecointre, G. 2001. Biology and conservation of sturgeon and paddlefish. Reviews in Fish Biology and Fisheries, 10: 355-392.

Chebanov, M.S., 1998. Conservation of sturgeon genetic diversity: enhancement and living gene bank: In: Action Before Extinction Proceeding International Conference, 16-18 Feb 1998. Vancouver, Canada.

Chebanov, M.S. and Savelyeva, E.A. 1999. New strategies for brood stock management of sturgeon in the Sea of Azov basin in response to changes in patterns of spawning migration. J. Appl. Ichthyol., 15: 183-190.

Celikkale, M.S. 1988. İc Su Balıkları ve Yetiştiriciliği. K.T.U. Surmene Deniz Bilimleri Fakultesi Yay. No.124, Fak. Yay. No.2, Trabzon (in Turkish), 419pp.

Dabrowski, K., Kaushik, S.J. and Fauconneau, B. 1985. Rearing of sturgeon (Acipenser baerii, Brandt) larvae I. feeding trial. Aquaculture, 47: 185-192.

Dobrovici, N.B. and Holcik, J. 2000. Distribution of Acipenser sturio L., 1758 in the Black Sea and its watershed. Bol. Ins. Esp. Oceanogr., 16(1-4): 37-41.

Edwards, D. and Doroshov, S. 1989. Appraisal of the sturgeon and sea trout fisheries and proposals for a rehabilitation program. FAO Field Document I.TCP/TUR/8853. 38pp.

Geldiay, R. and Balık, S. 1988. Türkiye Tatlısu Balıkları. Ege Üniv. Fen Fakültesi Yay.No.97, Bornova-İzmir (in Turkish), 519 pp.

Hensel, K. and Holcik, J. 1997. Past and current status of sturgeons in the upper and middle Danube River. Env. Biol. Fish., 48: 185-200.

Ivanov, V.P., Vlasenko, A.D., Khodorevskaya, R.P. and Raspopov, V.M. 1999. Contemporary status of the Caspian sturgeon (Acipenseridae) stock and its conservation. J. Appl. Ichthyol., 15: 103-105.

Kokoza, A.A. 1999. Importance of artificial reproduction in preserving Caspian sturgeons (Acipenseridae) (Abstract). J. Appl. Ichthyol., 15: 328.

Levin, A.V. 1995. Russian sturgeon Acipenser gueldenstaedtii Brandt stocking in the Volga Caspian Basin. Proceedings International Sturgeon Symposium Moscow VNIRO.

Natochin, Y.V., Lukianenko, V.I., Kirsanov, V.I., Lavrova, E.A., Metallov, G.F. and Shakhmatova, E.I. 1985. Features of osmotic and ionic regulation in Russian Sturgeon (Acipenser gueldenstaedtii Brant). Comparative Biochemistry and Physiology, 80A: 297- 302.

Öztürk, B. 1998. Black sea biological diversity Turkey. GEE Black Sea Environmental Programme Series, Volume 9.U.N. Publications, New York, 144 pp.

Prokes, M., Barus, V. and Penaz, M. 1997. Growth of 0+ juveniles Russian sturgeon (Acipenser gueldenstaedtii) in experimental basin condition (Czech Republic). Folia Zoologica 46 (4): 337-351

Slastenenko, E., 1955. The fishes of Black Sea basin. Et ve Balık Kurumu Umum Müdürlügü Yay., İstanbul (Turkish translation), 711pp.

Shelukhin, G.K., Metallov, G.F. and Geraskin, P.P. 1990. Effect of temperature and salinity of Caspian sea water on juvenile Russian sturgeon, Acipenser gueldenstaedtii. Journal of Ichthyology, 30: 75-85.

Zar, J.H., 1974. Biostatistical Analysis. Prentice Hall, Englewood Cliffs, NJ, 718pp.