Serdar YEDİER, Seda KONTAŞ, Derya BOSTANCI

Marmara Denizi'nde Yaşayan Pagellus acarne (Risso, 1827)'nin Kondisyon Faktörü, Boy-Boy ve Boy-Ağırlık İlişkileri

Bu çalışmada, Marmara Denizi’nin Tekirdağ açıklarında yayılım gösteren P. acarne türünün boy-ağırlık ve boy-boy ilişkileri ile kondisyon faktörü değerlerinin belirlenmesi amaçlanmıştır. 2017 ve 2018 yılları arasında yerel balıkçılarla koordineli bir çalışmanın sonucunda elde edilen toplam 294 balık bireyi incelenmiştir. Balık bireylerinin total boy(TB), çatal boy ve standart boy ölçümleri 0,1 cm hassasiyette yapılmıştır. Balıkların ağırlıkları(W) ise 0,1 g hassasiyetle belirlenmiştir. Yapılan t testi sonucunda dişi ve erkek bireylerin ölçümleri arasında istatistiksel fark olmadığı için bu çalışmada dişi ve erkek bireyler beraber değerlendirilmiştir. Eşey ayrımı gözetilmeden değerlendirilen P. acarne bireyinin minimum kondisyon faktörü değeri 0,9954 ve maksimum kondisyon faktörü değeri ise 1,4539 olarak hesaplanmıştır. P. acarne’nin boy-ağırlık ilişkisi denklemi ve korelasyon katsayısı sırasıyla W=0,02TB2,8142 ve r²=0,8409 olarak belirlenmiştir. Boy-ağırlık ilişki denklemindeki “b” değerinin %95’lik güven aralığı 2,8109-2,8164 olarak bulunmuştur. P. acarne türünün bu habitatta negatif allometrik bir büyüme gösterdiği belirlenmiştir. P. acarne türünün çatal boy-total boy, standart boy-total boy ve standart boy-çatal boy ilişkileri denklemleri ve korelasyon katsayıları sırasıyla y=0,7767x+0,1565 (r²=0,8910), y=0,8833x+0.2836 (r²=0,9185) ve y=0,8273x+0,4961 (r²=0,8585) olarak belirlenmiştir. Belirlenen popülasyon parametreleri P. acarne türünün Marmara Denizi Tekirdağ popülasyonu için ilk verilerdir.

Anahtar Kelimeler:

Pagellus acarne, boy-ağırlık ilişkisi, boy-boy ilişkisi, kondisyon faktörü

Condition Factor, Length-Length and Length-Weight Relationships for Pagellus acarne Inhabiting the Sea of Marmara

In this study, it was aimed to determine the length-weight and length-length relationships with condition factor values for P. acarne from offshore waters of Tekirdağ in the Sea of Marmara Sea. A total of 294 fish samples were studied as a result of working in coordination with local fishermen. A total of 294 fish samples were obtained from a coordinated study between 2017 and 2018 with local fishermen. Total length(TL), fork length, standard length and weight of the fish(W) samples were measured to the nearest 0.1 cm and 0.1 g respectively. As a result of t-test, female and male samples were evaluated together because there was no statistical difference between the measurements of male and female samples. The minimum condition factor value of P. acarne, which were evaluated without regard to sex, was 0.9954 and the maximum condition factor value was 1.4539. The length-weight relationship equation and correlation coefficient of P. acarne were determined as W = 0.02TL2.8142 and r² = 0.8409, respectively. The 95% confidence interval of the ‘b’ value in the length- weight relationship equation was 2.8109-2.8164. In this study, it was determined that P. acarne showed a negative allometric growth in this habitat. Fork length-total length, standard length-total length and standard length-fork length relationship equations and correlation coefficients of P. acarne were determined as y=0,7767x+0,1565 (r²=0,8910), y=0,8833x+0.2836 (r²=0,9185) and y=0,8273x+0,4961 (r²=0,8585), respectively. The determined parameters of P. acarne species are the first data for the Tekirdağ population in the Sea of Marmara.

Keywords:

Pagellus acarne, length-weight relationship, length-length relationship, condition factor,

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