CANER ENVER ÖZYURT, SİNAN MAVRUK, Volkan Barış KİYAĞA

Effects of predator size and gonad maturation on food preference and feeding intensity of Sander lucioperca (Linnaeus, 1758)

Bu çalışmada Sander lucioperca’nın önemli besin öğeleri ve beslenme yoğunluğundaki zamansal değişimler ile avcı boyuna bağlı değişimler ele alınmıştır. Bu amaçla Temmuz 2009 Haziran 2010 tarihleri arasında farklı ağ gözü genişliklerine sahip sade uzatma ağları kullanılmak suretiyle aylık deneysel örneklemeler yapılmıştır. Sonuçlar, predatör boyuna bağlı olarak önemli besin grubunda anlamlı değişimler olduğunu göstermiştir. Sudakların 19 cm’den büyük boy gruplarında balık en önemli besinsel öğeyi teşkil ederken; 19 cm’den küçük bireylerde en önemli besin grubu Dipter ve Mysid olarak belirlenmiştir. Ayrıca önemli besin gruplarında gözlenen zamansal değişimler de anlamlı bulunmuştur. Aralık ve Şubat ayları arasında en önemli besin grubu Mysidlerken, Mart ve Nisan aylarında Dipterler; diğer aylarda ise Teleostların en önemli besin grubunu oluşturduğu saptanmıştır. Sudaklarda beslenme yoğunluğu Ekim ayında en yüksek düzeydeyken; Ekim-Şubat ayları arasında kademeli olarak düşüş göstermiştir. Bu düşüşün üreme dönemiyle ilişkili olduğu tespit edilmiştir. Üreme aktivitesinin ardından beslenme yoğunluğu tekrar yükselmiştir.

Anahtar Kelimeler:

eşeylik organları, balık beslenmesi, predatörler, gıda seçiciliği, olgunlaşma

Sander lucioperca (Linnaeus, 1758)’da predatör boyu ve gonad gelişiminin besin tercihi ve beslenme yoğunluğuna etkisi

This study examines temporal changes and predator size-dependent changes in the important dietary groups and feeding intensity of pikeperch Sander lucioperca. Monthly experimental fishing operations were conducted for sampling purposes using gillnets with different mesh sizes between July 2009 and June 2010. The results showed significant changes in the important dietary items as a function of predator size. Diptera and mysids were the most important groups for pikeperch smaller than 19 cm, whereas fish were most important for pikeperch larger than 19 cm. The important dietary items also varied significantly over time. The most important dietary groups were mysids during December, January and February; diptera during March and April; and teleosts during the other months. The feeding intensity of pikeperch peaks in October and March and then progressively decreases between October and February. The decrease in feeding intensity was related to the reproductive period.

Keywords:

gonads, fish feeding, predators, food preferences, maturation,

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Alpar, R. 2003. Uygulamalı Çok Değişkenli İstatistiksel Yöntemlere Giriş 1. Nobel, Ankara, 411 pp.
Argiller, C., Barral, M. and Irz, P. 2003. Growth and diet of the pikeperch Sander lucioperca (L.) ın two french reservoirs. Archives of Polish Fisheries, 11: 99-114.
Balık, İ. 1999. The feeding features of the pike-perch (Stizostedion lucioperca) population in Lake Beyşehir. Turkish Journal of Zoology, 23: 189-194.
Balık, İ., Çubuk, H., Karaşahin, B., Özkök, R., Uysal, R. and Alp, A. 2006. Food and feeding habits of the pikeperch Sander lucioperca (Linnaeus, 1758), population from Lake Eğirdir (Turkey). Turkish Journal of Zoology, 30: 19-26.
Becer, Z.A. and İkiz, R. 1996. Eğirdir Gölündeki sudak (Stizostedion lucioperca L., 1758) populasyonunun mide içerikleri. XIII. Ulusal Biyoloji Kongresi, İstanbul.
Becer, Z.A. 2007. Karacaören-I Baraj Gölü’ndeki sudak Sander lucioperca (L., 1758) populasyonunun besin ve beslenme özellikleri. Süleyman Demirel Üniversitesi Eğirdir Su Ürünleri Fakültesi Dergisi, 2-3: 1-11.
Berg, J. 1979. Discussion of methods of investigating the food of fishes with reference to a preliminary study of the prey of Gobiusculus flavescens (Gobiidae). Marine Biology, 50: 263-273. doi: 10.1007/BF00394208
Brabrand, Å. and Faafeng, B. 1993. Habitat shift in roach (Rutilus rutilus) induced by pikeperch (Stizostedion lucioperca) introduction: predation risk versus pelagic behaviour. Oecologia, 95: 38-46.
Campell, R.N.B. 1992. Food of an introduced population of pikeperch, Stizestedion lucioperca L., in lake Eğirdir, Turkey. Aquaculture and Fisheries Management, 23: 71-85.
Dörner, H., Hűlsmann, S., Hölker, F., Skov, C. and Wagner, A. 2007. Size dependent predator-prey relationship between pikeperch and their prey fish. Ecology of Freshwater Fish, 16: 307-314. doi: 10.1111/j.1600-0633.2006.00223.x
Dulčić, J. 1996. Food and feeding habits of the damselfish, Chromis chromis (Teleostei: Pomacentidae) in the Eastern Adriatic. Annales for Istrian and Mediterranean Studies, 96: 31-38.
Elshoud-Oldenhave, M.J.W. 1979. Prey capture in the pikeperch, Stizostedion lucioperca, (Teleostei, Percidae): A structural and functional analysis. Zoomorphologie, 93: 1-32. doi: 10.1007/BF02568672
Erm, V. 1976. On the factors determining pikeperch year-class strength in the Pärnu Bay. Rybokhozyajstvennye assledovaniya BaltNIIRH, 12: 51-58.
Fordham, S.E. and Trippel, E.A. 1999. Feeding behaviour of cod (Godus moruha) in relation to spawning. Journal of Applied Ichthyology, 15: 1-9. doi: 10.1046/j.1439-0426.1999.00098.x
Gibson, R.N. and Ezzi, I.A. 1978. The biology of scottish population of fries’ goby Lesueurigobius friessi. Journal of Fish Biology, 17: 371-389. doi: 10.1111/j.1095-8649.1978.tb04181.x
Golikatte, R.G. and Bhat, U.G. 2011. Food and feeding habits of the Whipfin silver biddy gerres filamentotus from sharavati estuary, Central West Coast of India. World Journal of Science and Technology, 1: 29-33.
Hacunda, J.S. 1981. Trophic relationships demersal fishes in coastal area of the gulf of Main. Fisheries Bulletin, 79: 775-788.
Hyslop, E.J. 1980. Stomach contents analysis a review of methods and their application. Journal of Fish Biology, 17: 411-429. doi: 10.1111/j.1095-8649.1980.tb02775.x
Jardas, I., Šantić, M. and Pallaoro, A. 2004. Diet composition and feeding intensity of horse mackerel, Trachurus trachurus (Osteichthyes: Carangidae) in the eastern Adriatic. Marine Biology, 144: 1051-1056. doi: 10.1007/s00227-003-1281-7
Jardas, I. and Pallaoro, A. 1991. Food and feeding habits of black scorpionfish (Scopaena porcus L. 1758) (Pisces: Scorpaenidae) along the Adriatic coast. Acta Adriatica, 32: 885-888.
Jennings, S. Kaiser, M.J. and Reynolds, J.D. 2001. Marine Fisheries Ecology. Blackwell Science, Oxford, 417 pp.
Kangur, A. and Kangur, P. 1998. Diet composition and size-related changes in the feeding of pikeperch, Stizostedion lucioperca (Percidae) and pike, Esox lucius (Esocidae) in the Lake Peipsi (Estonia). Italian Journal of Zoology, 65(1): 255-259. doi: 10.1080/11250009809386828
Keskinen, T. 2008. Feeding ecology and behaviour of pikeperch, Sander lucioperca (L.), in boreal lakes. Jyväskylä Studies in Biological and Environmental Studies. Jyväskylä University Printing House, Jyväskylä, 54 pp.
Lappalainen, J., Olin, M. and Vinni, M. 2006. Pikeperch cannibalism: effects of abundance, size and condition. Annales Zoologici Fennici, 43: 35-44.
Lehtonen, H., Hansson, S. and Winkler, H. 1996. Biology and exploitation of pikeperch (Stizostedion lucioperca L.) in the Baltic Sea area. Annales Zoologici Fennici, 33: 525-535.
Link, S.J. and Almeida, P.F. 2000. An overview and history of the food web dynamics program of the Northeast Fisheries Science Center, Woods Hole, Massachusetts. NOAA Technical Memorandum NMFS-NE, 159: 1–60.
Magnehagen, C. 2006. Risk-taking behaviour in foraging young-of-the-year perch varies with population size structure. Oecologia, 147: 734-743. doi: 10.1007/s00442-005-0302-2
Marshall, S. and Elliott, M. 1997. A comparison of univariete and multivariete numerical and graphical techniques for determining inter- and intraspesific feeding relationships in estuarine fish. Journal of Fish Biology, 51: 526-545. doi: 10.1111/j.1095-8649.1997.tb01510.x
Nikolskii, G.V. 1969. Theory of fish population dynamics as the biological background for rational exploitation and management of fishery resources. Oliver and Boyd-Edinburgh, 323 pp.
Olson, M.H. 1996. Predator-prey interactions in size-structured fish communities: implications of prey growth. Oecologia, 108: 757-763. doi: 10.1007/BF00329052
Ozyurt, C.E. 2000. Seyhan baraj gölü sazan (Cyprinus carpio Linnaeus, 1758) ve sudakları Sander lucioperca (Bogustkaya and Naseka, 1996) için uygun ağ göz genişliğinin belirlenmesi. MSc thesis. Adana: Çukurova University.
Özyurt, C.E., Kiyaga, V.B., Mavruk, S. and Akamca E. 2011. Spawning, Maturity Length and Size Selectivity for Pikeperch (Sander lucioperca) in Seyhan Dam Lake. Journal of Animal and Veterinary Advances,10: 545-551. doi :10.3923/javaa.2011.545.551
Peltonen, H., Rita, H. and Ruuhijärvi, J. 1996. Diet and prey selection of pikeperch (Stizostedion lucioperca) in Lake Vesijärvi analysed with a logit model. Annales Zoologici Fennici, 33: 481-487.
Persson, L., Andersson, J., Wahlström, E. and Eklöv, P. 1996. Size-specific interactions in lake system: Predator gape limitation and prey growth rate and mortality. Ecology, 77: 900-911. doi: 10.2307/2265510
Säisä, M., Salminen, M., Koljonen, M.L. and Ruuhıjärvi, J. 2010. Coastal and freshwater pikeperch Sander lucioperca populations differ genetically in the Baltic Sea basin. Hereditas, 147: 205-214. doi: 10.1111/j.1601-5223.2010.02184.x
Salonen, S., Helminen, H. and Sarvala, J. 1996. Feasibility of controlling coarse fish populations through pikeperch (Stizostedion lucioperca) stocking in lake Köyliönjärvi, SW Finland. Annales Zoologici Fennici, 33: 451-457.
Sirotenko, M. and Istomin, A. 1978. Seasonal variotions in the feeding of the Black Sea Trachurus mediterraneus ponticus Aleev. Jornal of Ihthyology, 18: 424-431.
Smith, P.A., Leah, R.T. and Eaton, J.W. 1996. Removal of pikeperch (Stizosterdion lucioperca) from a British Canal as a management technique to reduce impact on prey fish populations. Annales Zoologici Fennici, 33: 537-545.
Sokal, R.R. and Rohlf, F.J. 1969. Biometry, the principles and practise of statics in biological research. W. H. Freeman and Company. USA, 776 pp.
Thiel, R. 1987. Untersuchungen zur Nahrungsselektivität juveniler Barsche (Perca fluviatilis L.) und Zander (Stizostedion lucioperca L.). Wissenschafliche Zeitschrift der Wilhelm-Pieck-Universität Rostock, 36: 46-49.
Turesson, H., Persson, A. and Brönmark, C. 2002. Prey size selection in piscivorious pikeperch (Stizostedion lucioperca) includes active prey choice. Ecology of Freshwater Fish, 11: 223-233. doi: 10.1034/j.1600-0633.2002.00019.x
Ulltang, Ø. 1996. Stock assessment and biological knowledge: Can prediction uncertainty be reduced? ICES J. Mar. Sci. 53:659– 675. doi: 10.1006/jmsc.1996.0086
Vehanen, T., Hyvärinen, P. and Huusko, A. 1998. Food consumption and prey orientation of piscivorous brown trout (Salmo trutta) and pikeperch (Stizostedion lucioperca) in a large regulated lake. Journal of Applied Ichtyology, 14: 15-22. doi: 10.1111/j.1439-0426.1998.tb00608.x
Wootton, R.J. 1990. Ecology of teleost fishes. Chapman and Hall Ltd, London, 404 pp.
Yılmaz, M. and Ablak, Ö. 2003. The Feeding Behavior of Pikeperch (Sander lucioperca (L., 1758)) Living in Hirfanlı Dam Lake. Turkish Journal of Veterinary and Animal Science, 27(3): 1159-1165.