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.
منابع مشابه
Trichodina Gobii (ciliophora: Trichodinidae) on Whiting Merlangius Merlangus with a Checklist from Turkish and Russian Coasts of the Black Sea
Trichodina gobii was identified during a parasitological survey conducted on the parasite fauna of whiting, Merlangius merlangus at both Sinop (Turkey) and Sevastopol (Russia) coasts of the Black Sea in the period between May 2011 and March 2014. Its morphological characteristics and taxonomic affinities with other previous reports on this species were revealed. The ecological occurrences in re...
متن کاملAge Composition, Growth, Movements, Meristics and Parasites of the Whiting, Merlangius Merlangus, in the Severn Estuary and Bristol Channel
Samples collected from power station intake screens between 1972 and 1977 have been used to study aspects of the biology of the whiting in the Severn Estuary and Bristol Channel. 0+ whiting generally started appearing in the inner estuary in July, at which time their standard length was at least 38 mm. Their numbers peaked in October and subsequently declined particularly rapidly during the wet...
متن کاملIn vivo red blood cell sickling and mechanism of recovery in whiting, Merlangius merlangus.
Haemoglobin concentrations in vertebrate red blood cells are so high that in human sickle cell disease a single surface amino acid mutation can result in formation of large insoluble haemoglobin aggregates at low oxygen levels, causing peculiar cell deformations or 'sickling'. This may cause vascular occlusion and thereby severe pain, organ failure and death. Here, using light and transmission ...
متن کاملA reliable method for ageing of whiting (Merlangius merlangus) for use in stock assessment and management
متن کامل
the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta aquatica turcica
سال: 2021
ISSN: ['2651-5474']
DOI: https://doi.org/10.22392/actaquatr.809314