Yalıköy Deresi (Ordu, Türkiye)'ndeki Bazı Balık Türlerinin Boy-Ağırlık ve Boy-Boy İlişkileri ile Kondisyon Faktörleri

Abstract

Bu çalışmanın amacı Yalıköy Deresi (Ordu-Turkey)'ndeki bazı balık türlerinin boy-ağırlık, boy-boy ilişkileri ve kondisyon faktörlerini belirlemektir. Balık örnekleri, Haziran 2013 ve Haziran 2014 tarihleri arasında farklı göz açıklıklarına sahip ağlar, serpme ağlar, olta takımı ve elektroşok cihazı yardımıyla yakalanmıştır. Bu çalışmada, 4 familyaya (Blennidae, Cyprinidae, Gobiidae, Salmonidae) ait 8 tür (Alburnus chalcoides, Barbus tauricus, Capoeta banarescui, Neogobius fluviatilis, Neogobius melanostomus, Squalius cephalus Salaria fluviatilis, Salmo labrax,) incelenmiştir. Balık örneklerinin total boy (TL), çatal boy (FL) ve standart boy (SB) ları 0,1 cm hassasiyetle, balık ağırlığı (W) ise 0,1 g hassasiyetle ölçümleri yapılmıştır. Boy-ağırlık ilişkileri, TL-SL ve TL-FL ilişkileri ve kondisyon faktörleri Yalıköy Deresi'nden yakalan her tür için ayrı ayrı hesaplanmıştır. Tüm istatistiksel analizler, P <0,05 anlamlılık düzeyinde değerlendirilmiştir. En yüksek boy-boy ilişki katsayısı 0,99 (B. tauricus, C. banarescui ve S. cephalus) iken en düşük katsayı ise 0,96 (A. chalcoides) olarak belirlenmiştir. En yüksek boy-ağırlık ilişki katsayısı ise 0,97 (S. cephalus) iken en düşük katsayı 0,84 (A. chalcoides) olarak belirlenmiştir. Ortalama kondisyon faktörleri sırasıyla A. chalcoides için 0,716 ± 0,093, B. tauricus için 0,967 ± 0,113, C. banarescui için 1,069 ± 0,113, N. fluviatilis için 1,021 ± 0,080 ve S. cephalus için 1,197 ± 0,095 olarak hesaplanmıştır. Bu çalışmada, Yalıköy Deresi'nden sekiz balık türünde ilk kez boy-ağırlık, boy-boy ilişkileri ve kondisyon faktörleri araştırılmış ve bu habitatta yaşayan beş tür için bu değerler ilk kez belirlenmiştir.

Keywords

• Büyüme,Boy-ağırlık ilişkisi,Boy-boy ilişkisi,Kondisyon faktörü,Yalıköy deresi

Length-Weight, Length-Length Relationships and Condition Factors of Some Fish Species in Yalıköy Stream (Ordu-Turkey)

Abstract

The aim of the present study is to determine the length-weight, length-length relationships and condition factors of some fish species in Yalıköy Stream (Ordu-Turkey). All specimens were collected by nets, fishing cast nets with different mesh sizes, fishing tackle, and electro shocker between June 2013 and June 2014 in the Yalıköy stream. In present study, 8 species (Alburnus chalcoides, Barbus tauricus, Capoeta banarescui, Neogobius melanostomus, Neogobius fluviatilis, Salaria fluviatilis, Salmo labrax, Squalius cephalus) belonging to 4 families (Blennidae, Cyprinidae, Gobiidae, Salmonidae) were examined. Total length (TL), fork length (FL) and standard length (SL) of the fish samples were measured to the nearest 0.1 cm, the weight (W) of fish was recorded to the nearest the 0.1 g in there. The length-weight relationships, TL vs SL and TL vs FL relationships and condition factors were calculated for each species which  caught from Yalıköy Stream. All statistical analyses were evaluated at P<0.05 significance level. The highest length-length correlation coefficient was 0.99 (B. tauricus, C. banarescui and S. cephalus) while the lowest coefficient was 0.96 (A. chalcoides). The highest length-weight correlation coefficient was 0.97 (S. cephalus) while the lowest coefficient was 0.84 (A. chalcoides). The mean condition factors were calculated as 0.716±0.093 for A. chalcoides, 0.967±0.113 for B. tauricus, 1.069±0.113 for C. banarescui, 1.021±0.080 for N. fluviatilis and 1.197±0.095 for S. cephalus, respectively. In this study, determination of the length-weight, length-length relationships and condition factor were investigated for the first time in eight fish species from Yalıköy stream and these values were determined for the first time for five species living in this habitat.

Keywords

• Growth,Length-weight relationship,Length-length relationship,Condition factor,Yalıköy stream

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