Determination of Age, Growth and First Maturity Length of Whiting (Merlangius merlangus, Nordmann, 1840) in the Eastern Black Sea

نویسندگان

چکیده

Çalışmada, Doğu Karadeniz’deki Mezgit (Merlangius merlangus) popülasyonunun bazı temel parametrelerinin belirlenmesi amaçlanmıştır. Mart 2017- Şubat 2018 tarihleri arasında yapılan 12 aylık örneklemede elde edilen ve incelenen 1579 adet mezgit balığının boylarının 7,5 cm ile 32,6 dağılım gösterdiği ortalama boyun 14,49±2,85 olduğu, ağırlıklarının ise 2,68 g 279,58 ağırlığın 26,05±20,95 olduğu bulunmuştur. Boy-ağırlık ilişkisi W=0,0046*L3,173 olarak saptanmıştır. Cinsiyet oranı (dişi/erkek) 1,31:1 χ2 testi sonucu farkın önemli tespit edilmiştir. Yaş dağılımı 0-VIII arasında, büyüme parametreleri L∞=31,87 cm, K=0,130, t0=-3,071, W∞=271,01 Ø'=2,123 belirlenmiştir. Toplam örneklerde ilk eşeysel olgunluk boyu (L50=13,19 cm) hesaplanmıştır. Elde veriler ışığında Karadeniz stoklarının sürdürülebilirliğini olumsuz yönde etkileyen bir avcılık söz konusu görülmüştür.

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ژورنال

عنوان ژورنال: Acta aquatica turcica

سال: 2021

ISSN: ['2651-5474']

DOI: https://doi.org/10.22392/actaquatr.809314