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POPULATION STRUCTURE AND GROWTH OF RUDD Scardinius erythrophthalmus (L.,1758) FROM A EUTROPHIC LAKE IN NORTHERN ANATOLIA       
Yazarlar
Doç. Dr. Ramazan YAZICI Doç. Dr. Ramazan YAZICI
Ahi Evran Üniversitesi, Türkiye
Savaş Yılmaz
Ondokuz Mayıs Üniversitesi, Türkiye
Doç. Dr. Okan YAZICIOĞLU Doç. Dr. Okan YAZICIOĞLU
Ahi Evran Üniversitesi, Türkiye
Nazmi Polat
Ondokuz Mayıs Üniversitesi, Türkiye
Özet
A total of 1329 samples were collected from monthly sampling between November 2009 and October 2010 in order to analyze growth features and population structure of rudd Scardinius erythrophthalmus living in Lake Ladik which has eutrophic character. The fork length (FL) ranged from 9.8 to 21.4 cm and the body weight (W) ranged from 13.62 to 200.68 g. Based on lapillus readings, the maximum age was 7 years. The overall ratio of female to male was 1:0.16. The von Bertalanffy growth equation parameters were calculated as L∞= 39.32 cm, W∞= 1504.92 g, k = 0.08, t0=-1.08 for females, and L∞= 28.19 cm, W∞= 448.03 g, k = 0.13, t0=-1.19 for males. Length-weight relationship for females and males was found as W = 0.0060 FL3.386and W = 0.0078 FL3.282, respectively. The Fulton’s condition factor (K) showed an upward trend with reference to age and length groups in both sex. The value of mean K was computed as 1.737 for females, 1.667 for males and 1.727 for combined sexes. This study provides the initial data on population structure, growth features and condition of rudd in Lake Ladik. Obtained data have shown that population is comprised of young individuals and that the growth rate of the species is slow.
Anahtar Kelimeler
Age | Condition factor | Growth parameters | Lake ladik | Lapillus
Makale Türü Özgün Makale
Makale Alt Türü Diğer hakemli uluslarası dergilerde yayımlanan tam makale
Dergi Adı Croatian Journal of Fisheries
Dergi ISSN 1848-0586
Dergi Tarandığı Indeksler Zoological Record
Makale Dili İngilizce
Basım Tarihi 05-2015
Cilt No 73
Sayı 3
Sayfalar 94 / 102
Doi Numarası 10.14798/73.3.828
Makale Linki http://ribarstvo.agr.hr/volumes.php?search=Article%3A828