Population structures and some growth properties of tench (Tincatinca L., 1758) in Mogan Lake, Ankara, Turkey

Abstract

The present study was carried out to assess the population structure, growth and condition factor of tench, between June 2012 and June 2013, in Mogan Lake. The age of T. tinca caught from Mogan Lake ranged between I to VII years. The sex percentage was determined as 50 % males, 42.92 % females and 7.08 % immature. Fork length of fish ranged from 9.2 cm to 36.5 cm and body weight of fish ranged from 9.4 g to 740 g. The von Bertalanffy growth equations were: Lt = 412.141 [1 – e-0.211 (t+1.82)] for females, L = 397.517[1 - e-0.174 (t+2.89)] for males and L = 384,001 [1 - e-0,235 (t+0,88)] for all individual; W = 1247.25 [1 - et = 397.517[1 - et = 384,001 [1 - et = 1247.25 [1 - e0.211 (t+1.82)] 3.1232 for females, W = 1208.94 [1 - e-0.174 (t+2.89)] 3.0293 for males and W = 1365,52 [1 - e-0,235 (t+0,88)] 3,1217 for for all t = 1208.94 [1 - et = 1365,52 [1 - eindividual. The condition factor was calculated as 1.69, 1.68 and 1.67 for females, males and for all individual, respectively

Keywords

• Growth
• Mogan Lake
• tench
• von Bertalanffy’s parameters

Mogan Gölü'nde yaşayan Kadife Balığı (Tinca tinca L., 1758)'nın populasyon yapısı ve büyümeözellikleri

Abstract

Bu araştırmada Haziran 2012 ve Haziran 2013 tarihleri arasında Mogan Gölü’nde yaşayan Kadife Balığı’nın yaş, büyüme özellikleri ve kondüsyon faktörü incelenmiştir. Mogan Gölü’nde yakalanan T. tinca bireylerinin I-VII yaşları arasında dağılım gösterdiği tespit edilmiştir. Populasyonun % 50’sini erkek, % 42,92’sini dişi ve % 7.08’sini de immature bireylerin oluşturduğu saptanmıştır. Boy dağılımı 9,2 cm ile 36,5 cm ve ağırlık dağılımı ise 9,4 g ile 740 g arasında değişim göstermektedir. Von Bertalanffy büyüme denklemlerine göre boyca büyüme dişiler için Lt =412,141 [1 – e-0,211 (t+1,82)], erkekler için Lt = 397,517[1 e-0,174 (t+2,89)] ve tüm bireyler için L = 384,001 [1 - e-0,235 (t+0,88)]; ağırlıkça büyüme dişiler için W = 1247,25 [1 - e-0,211 (t+1,82)] 3,1232t = 384,001 [1 - et = 1247,25 [1 - eerkekler için Wt = 1208,94 [1 - e-0,174 (t+2,89)] 3,0293 vetüm bireyler için Wt = 1365,52 [1 - e-0,235 (t+0,88)] 3,1217’dir. Kondüsyon faktörü değerleri dişi, erkek ve tüm bireyler için sırasıyla 1,69; 1,68 ve 1,67 olarak hesaplanmıştır

Keywords

• Büyüme
• kadife balığı
• Mogan Gölü
• von Bertalanffy parametresi

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