Karadeniz'de Yayılım Gösteren Papaz balığının, Chromis chromis, Biyometrik Karakterleri, Boy-Ağırlık İlişkisi ve Genetik Özelliklerinin Belirlenmesi

Papaz balığı, Chromis chromis, Akdeniz ve Karadeniz’in kayalıklı kıyılarında görülen en yaygın balık türlerinden bir tanesidir. Ticari bir değeri olmayan C. chromis, kayalıklı litoral bölge için önemli bir türdür. Bu çalışmada, 2018 yılında Karadeniz’den örneklenen 112 C. chromis örneğinin biyometrik özellikleri ve boy-ağırlık ilişkisi incelenmiştir. Bu amaçla toplam 15 morfometrik ve 6 meristik karakter ölçümü yapılmıştır. Ayrıca C. chromis örneklerinin mtDNA’larının 16S rRNA ve COI gen bölgeleri analiz edilerek tür genetik olarak da karakterize edilmiştir. Çalışma sonunda ölçülen erkek ve dişi bireylerin morfometrik ve meristik karakterlerin benzer olduğu ve istatistiksel olarak cinsiyetler arasında fark olmadığı belirlenmiştir. Balıkların ortalama boy ve ağırlıkları sırasıyla 99,54 + 11,49 mm (72,0-115,1) ve 18,35 + 5,95 g (5,96-26,56) olarak ölçülmüştür. Balıkların boy-ağırlık ilişkisi W=0.0127〖TL〗^3.1172 (R^2=0.8341) olarak hesaplanmış ve pozitif algoritmik büyüme (b>3) tespit edilmiştir. 16S rRNA ve COI gen bölgelerinin kısmi analizi sonucunda Karadeniz’deki örneklerin Ege ve Akdeniz’deki örnekler arasında genetik benzerlik olduğu tespit edilmiştir.

Anahtar Kelimeler:

Chromis chromis, morfometrik ve meristik karakter, mtDNA

Biometrics Characters, Length-Weight Relationships and Genetic Properties of Damselfish, Chromis chromis (Linnaeus, 1758) (Osteichthyes: Pomacentridae) from the Black Sea

The damselfish Chromis chromis is typically the most common fish species in the rocky shores of the Mediterranean Sea and the Black Sea. Despite having no commercial value, C. chromis was considered as a key species for the rocky littoral environment. In this study, the biometric properties and length-weight relationships were examined in 112 specimens of C. chromis sampled from the Black Sea in 2018. Fifteen morphometric and six meristic characteristics were measured. We also used a molecular approach employing mitochondrial genes (16S rRNA and COI) for the first time to further characterize C. chromis specimens collected from the Black Sea. Morphometric and meristic characters of male and female specimens were similar and there were no differences between sexes. The average length and weight were calculated as 99.54 + 11.49 mm (72.0-115.1) and 18.35 + 5.95 g (5.96-26.56), respectively. The length-weight relationship was calculated as W = 0.0127TL3.117 (R2 = 0.834) and the growth indicates a positive allometric growth (b>3). 16S rRNA and COI partial sequences analysis indicated a close genetic relationship with C. chromis specimens from the Aegean Sea and the Mediterranean Sea.

Keywords:

Chromis chromis, morphometric and meristic characteristics, mtDNA,

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