Fatih BAŞARAN

Çipura (Sparus aurata) balıklarının farklı yemlere olan atak modelleri ve yetiştiricilikte kullanımı

Bu çalışmada, çipura (Sparus aurata) balıklarının besin alış modelleri, farklı yem tiplerine göre tüketme istekleri, yüzme hızları ve yüzme aktiviteleri incelenmiştir. Denemede karma ve taze yem tipleri kullanılmıştır. Balıkların besin alış modeli, yüzme hızı ve yüzme aktivitesi video kamera görüntüleme tekniği kullanılarak tespit edilmiştir. Besin tüketimleri esnasında yapılan yüzme hızı ölçümlerinde, akvaryum ortamında karma yemle besleme anında yüzme hızları ortalama olarak 1,6±0,63 boy/sn, taze yem grubunda ise bu oran ortalama 1,77±0,54 boy/sn olarak ölçülmüştür. Bununla birlikte, tank ortamında karma yemle besleme anında ortalama yüzme hızı 5,65±0,25 boy/sn, taze yemle besleme anında ise ortalama 5,40±0,22 boy/sn hesaplanmıştır. Yemlerin tüketilme isteklerinin belirlenmesinde, akvaryum gruplarında ve tank gruplarında yüzme hızlarına bağlı olarak önemli farklılıklar tespit edilmiştir (p

Anahtar Kelimeler:

yemleme, pelet, gıda tüketimi, balık beslenmesi, kültür balığı, beslenme davranışı

Foraging patterns to different food types of the gilthead seabream (Sparus aurata) and use in aquaculture

Foraging patterns to different food types of the giithead seabream (Sparus aurata) and use in aquaculture. In this study, foraging patterns, wish and consumption force to two different food tipes of giithead seabream (Spams aurata) according to swimming speeds and swimming activity were analysed. During the trials, food attack models, swimming speeds and swimming activity were observed using a video camera. The measurement of the swimming speeds during food consumption, the average of swimming speed was 1,6±0,63 body length/second at the time of feeding with pellet food in aquarium groups and 1,77±0,54 body length/second with fresh food. In tank groups, the average of swimming speed was 5,65±0,25 body length/second with pellet food and 5,40±0,22 body length/second with fresh food. Determination of the demand feeding strategy, there were significant difference in every two groups. The measurement of the swimming activity during food consumption, the average of swimming activity was % 79,14±1,82 at the time of feeding with pellet food in aquarium groups and % 87,68±0,96 with fresh food. In tank groups, the average of swimming activity was % 93,5±0,44 with pellet food and %93,45±0,52 with fresh food. There were significant differences the swimming activity in aquarium groups but no tank groups. As a result of the analysis, 3 types of bentic and 2 types of pelagic prey attack models were found. Different behaviour features arised from competition for food. The digestibility and easy reach of the food was increased attractiveness and behaviour features were changed in fish.

Keywords:

feeding, pellets, food consumption, fish feeding, fish culture, feeding behaviour,

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