Yıl 2017, Cilt 3, Sayı 1, Sayfalar 15 - 23 2017-04-24

Türkiye’deki Bir Baraj Gölünde Doğal Olarak Bulunan Yayın Balıklarının (Silurus glanis) Besin Değişimi ve Av Seçiciliği
Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir

Ahmet ALP [1]

361 647

Bu çalışmada Menzelet Baraj Gölü’ndeki (Türkiye) yayın balıklarının besin değişimleri ve av seçicilikleri çalışılmıştır. Yayın balığının beslenme diyeti 6 balık türü, 1 yengeç (Potamon sp.) ve 1 sülük (Hirudo sp.)’ten oluşmuştur. Besin kompozisyonunu ağırlıklı olarak Alburnus kotsychyi, Capoeta angorae, Capoeta erhani, Luciobarbus pectoralis ve Silurus glanis‘i içeren balıklar oluşturmuş ve en önemli besinsel av ise A. kotsychyi olmuştur. Yayın balıklarının besin kompozisyonu kış ve sonbaharda sadece balıklardan oluşurken, bahar ve yaz döneminde diyette çok küçük bir oranda yengeç ve sülük bulunmuştur. Bu nedenle, bahar ve yaz döneminde besleneme kış ve sonbahara göre daha heterojendir. X2 ve G istatistik değerlerine göre av çeşitleri mevsimsel olarak değişiklik göstermiş (P<0,05) ve bu varyasyonun kaynağı özellikle kış sezonundan ve C. angorae’dan kaynaklanmıştır. Av boyu avcı boyuna göre değişmemiştir. Besin seçicilik indeksine (V) göre, yayın balıkları besinsel seçicilik göstermemişlerdir. En çok tercih edilen besinsel av A. kotsychyi’dür ancak bu avın da seçicilik indeksi istatistiki açıdan önemsiz bulunmuştur (V=-0,112, X2=2,509 ve P>0,05).  

Diet and prey selection of European catfish were studied in Menzelet Reservoir in Turkey. Diet of European catfish composed of 6 prey fish species, 1 crab (Potamon sp.) and 1 leech (Hirudo sp.). Diet composition was dominated by fish, including Alburnus kotsychyi, Capoeta angorae, Capoeta erhani, Luciobarbus pectoralis, Silurus glanis and the most important prey item was A. kotsychyi. The diet of European catfish was constituted solely by fish in winter and autumn while crab and leech contributed to a small part of the diet in spring and summer. Therefore, feeding was more heterogeneous in spring and summer than winter and autumn. The values of X2 and G statistics indicated a significant difference (P<0.05) in the seasonal proportions of prey types consumed and main source of variation comes from C. angorae in winter. Prey size did not change according to the predator size. According to the prey selection indices (V), European catfish did not show prey selectivity. A. kotsychyi was the most preferred prey, but its selection index was not statistically significant (V=-0.112, X2=2.509 and P>0.05). 

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Konular Yaşam Bilimleri
Yayımlanma Tarihi 2017
Dergi Bölümü Araştırma Makalesi
Yazarlar

Yazar: Ahmet ALP
Kurum: Department of Fisheries, Faculty of Agriculture, University of Kahramanmaraş Sütçü İmam
Ülke: Turkey


Bibtex @araştırma makalesi { limnofish288217, journal = {Journal of Limnology and Freshwater Fisheries Research}, issn = {}, eissn = {2149-4428}, address = {Su Ürünleri Araştırma Enstitüsü}, year = {2017}, volume = {3}, pages = {15 - 23}, doi = {10.17216/limnofish.288217}, title = {Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir}, key = {cite}, author = {ALP, Ahmet} }
APA ALP, A . (2017). Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir. Journal of Limnology and Freshwater Fisheries Research, 3 (1), 15-23. DOI: 10.17216/limnofish.288217
MLA ALP, A . "Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir". Journal of Limnology and Freshwater Fisheries Research 3 (2017): 15-23 <http://www.limnofish.org/issue/28724/288217>
Chicago ALP, A . "Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir". Journal of Limnology and Freshwater Fisheries Research 3 (2017): 15-23
RIS TY - JOUR T1 - Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir AU - Ahmet ALP Y1 - 2017 PY - 2017 N1 - doi: 10.17216/limnofish.288217 DO - 10.17216/limnofish.288217 T2 - Journal of Limnology and Freshwater Fisheries Research JF - Journal JO - JOR SP - 15 EP - 23 VL - 3 IS - 1 SN - -2149-4428 M3 - doi: 10.17216/limnofish.288217 UR - http://dx.doi.org/10.17216/limnofish.288217 Y2 - 2017 ER -
EndNote %0 Journal of Limnology and Freshwater Fisheries Research Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir %A Ahmet ALP %T Diet Shift and Prey Selection of the Native European Catfish, Silurus glanis, in a Turkish Reservoir %D 2017 %J Journal of Limnology and Freshwater Fisheries Research %P -2149-4428 %V 3 %N 1 %R doi: 10.17216/limnofish.288217 %U 10.17216/limnofish.288217
ISNAD ALP, Ahmet . "Türkiye’deki Bir Baraj Gölünde Doğal Olarak Bulunan Yayın Balıklarının (Silurus glanis) Besin Değişimi ve Av Seçiciliği". Journal of Limnology and Freshwater Fisheries Research 3 / 1 (Nisan 2017): 15-23. http://dx.doi.org/10.17216/limnofish.288217