Burak SEÇER, ERDOĞAN ÇİÇEK, Yasemin CELEPOĞLU

Alburnus caeruleus (Heckel, 1843) türünün Bazı Populasyon Dinamiği Parametreleri, Merzimen Çayı, Fırat Havzası, Türkiye

Bu çalışmada 2013 yılında Merzimen Çayından örneklenen Alburnuscaeruleus bireylerine ait populasyon dinamiği parametreleribelirlenmiştir. Toplam olarak 347 birey incelenmiş olup yaşlarının 0-III yaş grupları arasında değişim gösterdiği, en baskın II. yaşgrubunun (%44.45) olduğu ve bunu sırayla I., III. ve 0. yaş gruplarınınizlediği belirlenmiştir. İncelenen bireylerin 2,6-8,4cm boy ve 0,11-6,82g ağırlık dağılımına sahip olduğu ve ortalama boy ve ağırlıkdeğerleri ise sırasıyla 5,53±1,12cm ve 1,83±1,23g olarakhesaplanmıştır. Merzimen populasyonuna ait boy-ağırlık ilişkisiW=0,0062*TL3,2205 olarak bulunmuştur. von Bertalanffy büyümeparametreleri ise L∞: 10,50 cm, k: 0,3665, to: -0,89, Büyüme katsayısıΦꞌ: 3,7 ve Kondisyon Faktörü ise K: 0,37 bulunmuştur. Toplam, doğalve balıkçılık nedeniyle meydana gelen ölüm oranları ile stoktanyararlanma düzeyi Z: 0,79, M: 0,55, F: 0,24 ve E: 0,30 olarakhesaplanmıştır.

Determination of Some Population Parameters of Alburnus caeruleus (Heckel, 1843) from Merzimen Stream, Euphrates Basin, Turkey

The aim of this study was to determine the population parameters of Alburnus caeruleus in the Merzimen Stream, Euphrates Basin. A total of 347 specimens were analyzed the age varied from 0-III and the majority of them are II. age (44.45%) followed by I., III. and 0 age classes, respectively. Total length ranged from 2.6 to 8.4cm and weight varied from 0.11 to 6.82g, and the average length and weight were calculated as 5.53±1.12cm and 1.83±1.23g, respectively. The lengthweight relationship was expressed as W=0.0062*TL3.221. The von Bertalanffy growth parameters were found as L∞: 10.50 cm, k: 0.3665 and to: -0.89, growth coefficient was Φꞌ: 3.7 and condition factor was K: 0.37. Total, natural and fishing mortalities rates and exploitation rate were estimated as Z: 0.79, M: 0.55, F: 0.24 and E: 0.30, respectively.

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