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Keywords:Fish feed Growth Histology Zophobas morio ÖzBu çalışma, balık unu ile süper kurt (Zophobas morio) unu ikamesinin alabalık yavrularında büyüme performansı, yaşama oranı, karaciğer, böbrek ve incebağırsak histolojisi üzerindeki etkilerini izlemek üzere 45 gün süreyle 3 paralelli yürütülmüş-tür. Ortalama başlangıç ağırlığı 1,39±0,03 gr olan yavru alabalıklar süper kurt unu ile balık ununun %0, %25, %50 %100 oranlarında ikame edildiği dört farklı yem ve bir ticari alabalık yavru yemi ile günde iki kez doyuncaya kadar elle yemlenmiş-tir. Ticari yem ve %25 süper kurt unu içeren yem ile beslenen gruplarda canlı ağırlık kazancı ve boy artışı bakımından en iyi değerler görülürken, yemdeki süper kurt unu oranı arttıkça bü-yüme performansı olumsuz etkilenmiştir. Gruplarda gözlenen yaşama oranları değişkenlik gösterse de süper kurt unu kullanı-lan gruplarda daha düşük gerçekleşmiş ve istatistiki olarak da aradaki fark önemlidir (p<0,05). Elde edilen sonuçlar, süper kurt ununun alabalık yavru yemlerinde balık unu ile büyüme performansını olumsuz etkilemeden %25 düzeyine kadar ikame edilebileceğini ortaya koymuştur. Abstract EFFECTS OF FISH MEAL SUBSTITUTION WITH SUPER WORM (Zophobas morio) MEAL ON GROWTH PERFORMANCE OF RAINBOW TROUT FINGERLINGSA 45 days feeding trial was conducted to evaluate the effects of dietary fishmeal replacement by super worm (Zophobas morio) meal (SWM) on growth performance, survival, liver, kidney and intestine histology of rainbow trout fingerlings. Fish in triplicate groups (average initial weight 1.39±0.03 g) were fed twice a day ad libitum with 4 isonitrogenous (52% crude protein) experimental feeds in which fish meal were substituted 0, 25%, 50% and 100% with SWM. A separate group of three replicates were fed with a commercial feed. Fish fed with commercial diet and %25 SWM revealed the highest values for growth performance but survival rates were variable. These results indicate that fish meal replacement with SWM up to 25% have no adverse effect on rainbow trout fingerlings and a decrease in growth parameters was obvious with increasing levels of SWM in diets.

The aim of this study was to investigate some biometric properties of freshwater mussels (Unio crassus, Philipsson, 1788) from the Karasu Stream in Sinop province and the samples was collected between March -April 2017. Water temperature (14.70 °C), dissolved oxygen (9.00 mg/L), pH (7.14), conductivity (400.30 µS/cm) and total dissolved solids (196.60 mg/L) were recorded in sampling site.A total number of 150 (97 males and 53 females) mussels were measured for shell dimensions as 53.75±6.43 mm for shell length, 26.83±3.26 mm for shell width, 17.15±2.66 mm for shell height and 15.47±6.37 g for live weight. The yield for 1 kg live weight of the mussels was obtained as 399 g, and the sex ratio was calculated as 1:0.61 (male/female). Length-weight relationship, gonadosomatic index and age were found as W=0.00013xL 2.9193 (r=0.87401), % 40.20±9.28 ve 3.85±1.40 years, respectively.