Akın Türker İLKYAZ, Gülnur METİN, Ozan SOYKAN, Hasan Tuncay KINACIGİL

Orta Ege Denizi (Doğu Akdeniz) kırlangıç balığı’nın (Lepidotrigla cavillone Lacepède, 1801) (Triglidae) büyüme ve üreme özellikleri

Bilimsel temele dayalı bir balıkçılık yönetiminin ihtiyaç duyduğu bilgileri sağlamak için, Orta Ege Denizi kırlangıç balığı’nın yaş, büyüme ve üreme özellikleri çalışılmıştır. Çalışmada, Temmuz 2004 ile Haziran 2007 tarihleri arasında dip trolü ile toplam 2342 adet birey örneklenmiştir. Bireylerin, 3,4 cm ile 15,2 cm total boyları arasında dağılım gösterdiği tespit edilmiştir. Örneklerin % 35,2’sinin dişi, % 25,7’sinin erkek ve % 39,1’inin ise eşeysel olgunluğa erişmemiş bireylerden oluştuğu ve stoğa ait eşey oranının 1:0,73 olduğu tespit edilmiştir. Tüm bireyler için boy-ağırlık ilişkisinin W = 0,0086L3,16 olduğu hesaplanmıştır. Örneklerin, I ile VI yaşları arasında dağılım gösterdiği, von Bertalanffy büyüme parametrelerinin L∞ = 15,96 cm, W∞ = 54,35 gr, to= –0,018 yıl ve k = 0,483 yıl–1 olduğu tahmin edilmiş ve büyüme performans indeksi 2,09 (ϕ') olarak hesaplanmıştır. Üremenin Şubat’ta başladığı ve Haziran’a kadar devam ettiği belirlenmiştir. Yumurta verimliliğinin 503 ile 10.046 yumurta/dişi arasında olduğu ve bu verimin balık boyu ve ağırlığı ile ilişkili olduğu tespit edilmiştir. Her iki eşey için ilk üreme boyu ve yaşı 10,55 cm total boy ve 2 yaş olarak hesaplanmıştır.

Anahtar Kelimeler:

Kırlangıç, Lepidotrigla cavillone, yaş, büyüme, üreme, Ege Denizi

Growth and reproduction of large-scaled gurnard (Lepidotrigla cavillone Lacepède, 1801) (Triglidae) in the central Aegean Sea, eastern Mediterranean

Age, growth, and reproduction of the large-scaled gurnard were studied in the central Aegean Sea to provide fisheries managers with the essential data for science-based management. A total of 2342 samples were collected by trawl hauls between July 2004 and June 2007 from İzmir Bay (Turkey). The size of the samples ranged from 3.4 to 15.2 cm total length and the samples were composed of 35.2% females, 25.7% males and 39.1% immature individuals, with a female to male ratio of 1:0.73. The length-weight relationship was calculated as W = 0.0086L3.16 for all samples. The age composition of the samples was from I to VI and the estimated von Bertalanffy growth parameters were L\infinity = 15.96 cm, W\infinity = 54.35 g, to = -0.018 year, and k = 0.483 year-1, with a growth performance index of 2.09 (j'). Reproduction started in February and continued to June. The total fecundity ranged from 503 to 10,046 oocytes/female and showed a significant correlation with fish length and weight. The size at first maturity was estimated at 10.55 cm total length and the maturity age was found to be 2-year-old in both sexes.

Keywords:

Lepidotrigla cavillone, age, growth, reproduction, Aegean Sea., Large-scaled gurnard,

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Akyol, O. 2003. Retained and trash fish catches of beach-seining in the Aegean Coast of Turkey. Turk. J. Vet. Anim. Sci. 27:1111- 1117.
Bauchot, M. L. 1987. Poissons osseux. In: Fiches FAO d'identification pour les besoins de la pêche. (rev. 1). Méditerranée et mer Noire. Zone de pêche 37. Vol. II. (ed. W. Fischer, M.L. Bauchot and M. Schneider). Commission des Communautés Européennes and FAO, Rome, pp. 891-1421.
Blaxter, J. H. S. 1969. Development: Eggs and larvae. In: Fish Physiology, Reproduction, Growth, Bioluminescence, Pigments and Poisons vol 3 (ed. W.S. Hoar and D.J. Randal), Academic Press, New York and London.
Caragitsou, E. and Papaconstantinou, C. 1990. Food and feeding habits of large scale gurnard, Lepidotrigla cavillone (Triglidae) in Greek seas. Cybium 14:95-104.
Colloca, F., Cardinale, M. and Ardizzone, G.D. 1997. Biology, spatial distribution and population dynamics of Lepidotrigla cavillone (Pisces: Triglidae) in the Central Tyrrhenian Sea. Fish. Res. 32:21-32.
Froese, R. 2006. Cube law, condition factor and weight-length relationships: history, meta-analysis and recommendations. J. Appl. Ichthyol. 22:241-253.
Froese, R. and Pauly, D. 2009. FishBase version (06/2009). World Wide Web electronic publication. http://www.fishbase.org (June 2009).
Gunderson, D.R. 1993. Surveys of fisheries resources. John Wiley and Sons, New York.
Hunter, J. R., Lo, N. C. H. and Leong, R. J. H. 1985. Batch fecundity in multiple spawning fishes. In: An Egg Production Method for Estimating Biomass of Pelagic Fish (Eds., R. Lasker). Application to the northern anchovy, Engraulis mordax. NOAA Tech. Rep. NFMS, 36. pp. 67-77.
Hureau, J.-C. 1986. Triglidae. In: Fishes of the North-eastern Atlantic and the Mediterranean Vol. 3. (ed. P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese). UNESCO, Paris, pp. 1230-1238.
İlkyaz, A. T., Metin, C. and Kınacıgil, H. T. 1998. A computer program about the calculation of the selectivity parameters in towed fishing gear illustrated with cover cod-end method (L50 Version: 1.0.0). Journal of Fisheries and Aquatic Science 15:305- 314.
Kerkhoff, A.J. and Enquist, B.J. 2009. Multiplicative by nature: Why logarithmic transformation is necessary in allometry. Journal of Theoretical Biology 257:519-521.
King, M. 1996. Fisheries Biology Assessment and Management. Fishing News Books, England.
Labropoulou, M. and Machias, A. 1998. Effect of habitat selection on the dietary patterns of two triglid species. Mar. Ecol. Prog. Ser. 173:275-288.
Lamprakis, M. K., Kallianiotis, A. A., Moutopoulos, D. K. and Stergiou, K. I. 2003. Weight-length relationships of fishes discarded by trawlers in the North Aegean Sea. Acta Ichthyologica et Piscatoria, 33:145-151.
MacGregor, J.S. 1957. Fecundity of the Pacific sardine (Sardinops caerulea). Fish. Bull., U.S., 57:427-449.
Metin, G. and Kınacıgil, H.T. 2001. The sectioning technique in age determination by otolith. Journal of Fisheries and Aquatic Science 18:271-277.
Nikolsky, G. W. 1963. The ecology of fishes (Translated by L. Birkett). Academic Press. London and New York.
Olim, S. and Borges, T. C. 2006. Weight-length relationships for eight species of the family Triglidae discarded on the south coast of Portugal. J. Appl. Ichthyol. 22:257-259.
Packard, G.C. 2009. On the use of logarithmic transformations in allometric analyses. Journal of Theoretical Biology 257:515-518.
Papacostantinou, C. 1983. Observations on the ecology of gurnards (Pisces: Triglidae) in the Greek Seas. Cybium 7:71-88.
Pauly, D. and Munro, J. L. 1984. Once more on growth comparison in fish and invertebrates. ICLARM, Fishbyte 2:21-21.
Ricker, W. E. 1973. Linear regressions in fishery research. Fish. Res. Board Can. 30:409-434.
Ricker, W. E. 1975. Computation and interpretation of biological statistics of fish populations. Bull. Fish. Res. Board Can. 191:1- 382.
Safran, P. 1992. Theoretical analysis of the weight-length relationship in fish juveniles. Marine Biology, 112:545-551.
Sparre, P. and Venema, S.C. 1998. Introduction to tropical fish stock assessment - Part 1: Manual, 306/1, Rev. 2. FAO Fish. Tech. Pap. Rome.
Toğulga, M., Uçkun, D. and Akalın, S. 2000. Study on the biology of the large-scaled gurnard (Lepidotrigla cavillone Lacepede, 1801) in the Gülbahçe Bay (Aegean Sea). Journal of Fisheries and Aquatic Science 17:71-84.
Tsimenides, N., Machias, A. and Kallianiotis, A. 1992. Distribution patterns of triglids (Pisces: Triglidae) on the Cretan shelf (Greece), and their interspecific associations. Fish. Res. 15:83- 103.
Uçkun, D. 2005. Investigation of the age and growth characteristics of the species belonging to the family Triglidae in Edremit Bay. Journal of Fisheries and Aquatic Science 22:363-369.
Weatherley, A.H. and Gill, H.S. 1987. The biology of fish growth. Academic Press, London.