Melek ÖZPİÇAK, Semra SAYGIN, Savaş YILMAZ, Nazmi POLAT, Aykut AYDIN, Enes HANÇER

Orta Karadeniz Bölgesi’ndeki bazı akarsularda yaşayan tatlısu kefali (Squalius cephalus, L.1758)’nin boy-ağırlık ve boy-boy ilişkileri

Bu çalışmada orta Karadeniz Bölgesi’ndeki bazı içsularda yaşayan tatlısu kefalinin (Squalius cephalus, L.1758) boy-ağırlık ve boy-boy ilişkileri incelenmiştir. Toplamda 218 (Abdal (N=44), Akçay (N=57), Terme (N= 55), Yedikır (N=62)) örnek farklı lokalitelerden örneklenmiştir. Yakalanan tüm örneklerin total, çatal ve standart boyları (0.1 cm) ölçülmüştür. Her bir örneğin ağırlığı (W) kaydedilmiştir (0.01 g). Analiz sonuçlarına göre cinsiyetler arasında boy ve ağırlık bakımından istatistiksel olarak önemli bir farklılık yoktur (P˃0.05). Bu sebeple tüm populasyon (dişi+erkek) analizlerde birlikte değerlendirilmiştir. Abdal Çayı, Akçay Çayı, Terme Çayı ve Yedikır Baraj Gölü’nden örneklenen tatlısu kefalinin ortalama total boyları sırasıyla 11.49±0.792, 10.31±0.518, 10.33±0.289 ve 11.11±0.327 cm arasında değişmektedir. Boy-ağırlık ilişkileri tüm lokaliteler için önemli bulunmuştur (P < 0.001, r2 > 0.990). Boy-ağırlık ilişkisinin “b” değeri istatistiksel anlamda 3’ten faklıdır ve tüm lokaliteler için büyüme tipi pozitif allometriktir. Boy-ağırlık ilişkilerinin denklemleri sırası ile Abdal, Akçay, Terme ve Yedikır için W=0.007TL3.224 , W=0.006TL3.285, W=0.005TL3.298, W=0.007TL3.210 olarak hesaplanmıştır. Boy-boy ilişkilerinin regresyon katsayıları 0.916 ile 0.999 arasında değişim göstermektedir ve istatistiksel anlamda önemlidir (P

Length-weight and length-length relationships of chub (Squalius cephalus, L., 1758) inhabiting a few inland waters of the Middle Black Sea Region

In this study, the length-weight and length-length relationships of chub (Squalius cephalus, L.1758) sampled from a few inland waters of the middle Black Sea were investigated. A total of 218 (Abdal (N=44), Akçay (N=57), Terme (N= 55), Yedikır (N=62)) chub individuals were sampled from different localities. All captured individuals were measured to the nearest 0.1 cm for total, fork and standard lengths. The weight of each sample (W) was recorded (0.01 g). According to results of analyses, there were no statistically significant differences between sexes in terms of length and weight (P˃0.05). So, entire populations (female+male) were evaluated together for analyses. The average total lengths of chub sampled from the Abdal Stream, Akçay Stream, Terme Stream and Yedikır Dam Lake varies between 11.49±0.792, 10.31±0.518, 10.33±0.289 and 11.11±0.327 cm, respectively. The length-weight relationships (LWRs) were found highly significant (P < 0.001, r2 > 0.990) for all localities. The value of ‘b’ of LWR was significantly different from 3.0 in chub and the growth type is possitive allometric for all localities. The equations of length-weight relationship were calculated as W=0.007TL3.224, W=0.006TL3.285, W=0.005TL3.298, W=0.007TL3.210 for Abdal, Akçay, Terme and Yedikır, respectively. Length-length relationship was also highly significant (P

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