İskenderun Körfezi’nde (Doğu Akdeniz) Nil Barbununun (Upeneus pori Ben-Tuvia & Golani, 1989) Büyüme ve Üreme Özellikleri

‹skenderun Körfezi’nden (Do¤u Akdeniz) örneklenen Nil Barbununun (Upeneus pori) yafl da¤›l›m›, büyüme verileri, yumurtlama zaman›, efley oranlar›, ilk cinsi olgunlu¤a eriflme boylar› ve yumurta verimlili¤i (F) araflt›r›lm›flt›r. Örneklerin % 52,6’n› difliler, % 47,4’ünü erkekler oluflturmufltur. Diflilerin total boyu 7,0 ile 17,0 cm aras›nda, erkeklerin ki ise 6,6 ile 15,1 cm aras›nda de¤iflim göstermektedir. Erkek ve diflilerin boy (L) ve a¤›rl›k (W) iliflkisi s›ras›yla W = 0,0108*L2.99 ve W = 0,0097*L3.03 olarak saptanm›flt›r. Otolitlerden elde edilen yafl verileri von Bertalanffy büyüme verilerinin tahmininde kullan›lm›flt›r. Buna göre hesaplanan veriler; L∞ = 19,1 cm, K = 0,360, to = -0,812 dir. En yüksek yafl, difliler için 5, erkekler için 4 olarak belirlenmifltir. Erkek ve diflilerin yafl da¤›l›m›nda 2. yafl grubu bask›n bulunmufltur. ‹lk efleysel olgunlu¤a, erkekler ve difliler 10 cm total boyda ulaflmaktad›r. Ayl›k gonadosomatik indeks de¤erleri, yumurtlama zaman›n›n yo¤un olarak May›s ve Temmuz aylar› aras›nda oldu¤unu göstermifltir. Yumurta verimlili¤i (F) - boy iliflkisi, logF = -0,733 + 3,46logL (r = 0.81) olarak saptanm›flt›r.

Growth and Reproduction of Por's Goatfish (Upeneus pori Ben-Tuvia & Golani, 1989) in İskenderun Bay, the Eastern Mediterranean

The age composition, growth parameters, spawning season, sex ratio, length at first sexual maturity and fecundity of por's goatfish (Upeneus pori) caught from the Bay of İskenderun in the eastern Mediterranean Sea were investigated. Females and males made up 52.6% and 47.4%, respectively, of the particular population of the species. The total length of females ranged from 7.0 cm to 17.0 cm, and of males from 6.6 cm to 15.1 cm. The length (L) - weight (W) relationships for males and females were estimated as W = 0.0108*L2.99 and W = 0.0097*L3.03, respectively. The age data derived from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation. The estimated parameters were: L\infinity = 19.1 cm, K = 0.360 and to = -0.812. The maximum age was 5 for females and 4 for males. The 2-year age group was dominant in both females and males. Males and females matured at a total length of 10 cm. The monthly values of the gonadosomatic index indicated that spawning occurred mainly between May and July. The fecundity (F) - length relationship was logF = 0.733 + 3.46logL (r = 0.81).

Keywords:

İskenderun Bay, Eastern Mediterranean, por's goatfish, growth reproduction,

PDF

___

Bagenal, T.B. 1978. Fecundity. In T.B. Bagenal (Editor): Methods for Assessment of Fish Production in Fresh Waters. IBP Handbook. No. 3, Blackwell Scientific Publications, London, pp. 166-178.

Basusta, N. 1997. Pelajic and Demersal Fishes of İskenderun Bay. Cukurova. Uni. Scien. Enst. Ph.D. Thesis. Adana, 202 pp.

Basusta, N., Basusta, A.G., Torcu, H. 2002. Distribution of Lessepsian fishes in the Turkish Mediterranean coasts. Workshop on Lessepsian Migration, 20-21 July 2002, Gökçeada-Turkey, pp. 100-107.

Ben-Tuvia, A. and Golani, D. 1989. A new species of goatfish (Mullidae) of the genus Upeneus from the Red Sea and the eastern Mediterranean. Isr. J. Zool. 36, 103-112.

Beverton, R.J.H and Holt, S.J. 1957. On the Dynamics of Exploited Fish Populations. UK. Min. Agric. Fish., Fish Invest., 19, 53 pp.

Bingel, F., Ozsoy, E., Unluata, U. 1993. A Review of the State of the Fisheries and the Environment of the Northeastern Mediterranean (Northern Levantine Basin). Studies and Reviews, General Fisheries Council for the Mediterranean. No. 65. Rome, FAO, 74 pp.

Cicek, E., Avsar, D., Yeldan, H. And Ozutok, M. 2002. Population characteristics of the por’s goatfish (Upeneus pori Ben- Tuvia&Golani, 1989). Inhabiting in Babadillimanı Bight (Northeastern Mediterranean-Turkey. Workshop on Lessepsian Migration, 20-21 July 2002,Gokceada Turkey, 92-99 pp.

Fischer, W., Bauchot, M. L., Schneider, M. 1987. Fiches FAO d’identification des especes pour les besoins de la peche. (Rev.1) Mediterraneee et mer Noire. Rome, FAO, vol.2 761-1530pp.

Galil, S. B. 1993. Lessepsian migration. New findings on the foremost anthropogenic change in the Levant basin fauna. In:N.F.R. Della Croce, edt. Mediterranean Seas 2000. Instıtuto Scienze Ambientali Marine-Santa Margherita Ligure, pp 307-323.

Golani, D. 1990. Environmentally induced meristic changes in Lessepsian fish migrants, a comparison of source and colonizing populations. Bull. L’Instıtut Ocean. Monaco (special ıssue) 7: 143- 152.

Golani, D. 1994. Niche separation between colonizing and indigenous goatfishes (Mullidae) of the Mediterranean coast of Israel. J. Fish Biol., 45:503-513.

Golani, D. 1996. The marine ichthyofauna of the eastern Levant-history, inventory and characterization. Isr. J. Zool., 42:15-55.

Golani, D. 1998a. Distribution of Lessepsian migrants fish in the Mediterranean. Ital. J. Zool., 65 suppl.:95-99.

Golani, D., Ben-Tuvia, A. 1995. Lessepsian migration and the Mediteranean fisheries of Israeal. In: Armantrout,N.B. (ed.) Conditions of the World’s Aquatic Habits. Proc. World Fish. Congr. Theme I. Oxford&IBH Pub. Co. Pvt. Ltd., New Delhi, 279- 289 pp.

Golani, D., Galil, B. 1991. Tropic relationships of the colonizing and indigeneous goatfishes (Mullidae) in the eastern Mediterranenan with special emphasis on decapod crustaceans. Hydrobiologia. 218:27-33.

Gücü, A. C., Bingel, F., Avflar, D. and Uysal, N. 1994. Distribution and occurrence of Red Sea fish at the Turkish Mediterranean coast- northern Cilician basin. Acta driatica, 34 (1-2): 103-113.

Holden, M. J. and Raitt, D. F. S. 1974. Manual of fisheries science. Part:2-Methods of resource investigation and their application. FAO Fish.Tech.Rap. (115): Rev.1, 214 pp.

İflmen, A. 1995. Fecundity of whiting, Merlangius merlangus euxinus, on the Turkish Black Sea coast. Fisheries Research, 22: 309-318.

Mater, S., Toğulga, M. and Kaya, M. 1995. Distribution of Lessepsian fish species at the Turkish Sea. II. National Ecology and Enviroment Congress, 11-13 September 1995, (in Turkish), pp. 453-462.

Sparre, P., Ursin, E., Venema, S.C. 1989. Introduction to Tropical Fish Stock Assessment. Part 1- Manual, FAO Fish Tech. Pap., No. 306, 337 pp.

Taskavak, E., Bilecenoglu, M. 2001. Length,weight relationships for 18 Lessepsian (Red Sea) immigrant fish species from the eastern Mediterranean coast of Turkey. J. Mar. Biol. Ass. U.K., 81:895- 896.

Torcu, H. 1995. Indo-Pacific species inhabited Mediterranean and south Aegean coast of Turkey and studies on biology and ecology of goldband goatfish, Upeneus moluccensis (Bleeker, 1855) and lizardfish, Saurida undosquamis (Richardson, 1848). Selcuk University, Enst. Science, PhD. Thesis, Konya (in Turkish),168 p.

Torcu, H., Mater, S. 2000. Lessepsian fishes spreading along the coast of the Mediterranean and The Southern Aegean Sea of Turkey. Turkish Journal of Zoology, 24:139-148.

Whitehead, P.J.P., Bauchot, M.-L., Hureau, J.-C., Nielsen, J., Tottonese, E. 1986. Fishes of the North-Eastern Atlantic and The Mediterranean. UNESCO, Paris. Vol. II: 511-1009 pp.