POPULATION STRUCTURE AND GROWTH OF RUDD Scardinius erythrophthalmus (L., 1758) FROM A EUTROPHIC LAKE IN NORTHERN ANATOLIA

• DOI: 10.14798/73.3.828
• Publication Date: 2015-09-10T14:36:23Z
• Authors: Ramazan Yazici; Sava� Yilmaz; Okan Yazicioglu; Nazmi Polat
• Keywords: 0106 biological sciences; Age; Lapillus; Condition factor; 14. Life underwater; Lake ladik; 01 natural sciences; Growth parameters

A total of 1329 samples were collected from monthly sampling between November 2009 and October 2010 in order to analyze growth features population structure rudd Scardinius erythrophthalmus living Lake Ladik which has eutrophic character. The fork length (FL) ranged 9.8 21.4 cm the body weight (W) 13.62 200.68 g. Based on lapillus readings, maximum age was 7 years. overall ratio female male 1:0.16. von Bertalanffy equation parameters calculated as L∞ = 39.32 cm, W∞ 1504.92 g, k 0.08, t0 -1.08 for females, 28.19 448.03 0.13, -1.19 males. Length-weight relationship females males found W 0.0060 FL3.386 0.0078 FL3.282, respectively. Fulton’s condition factor (K) showed an upward trend with reference groups both sex. value mean K computed 1.737 1.667 1.727 combined sexes. This study provides initial data structure, Ladik. Obtained have shown that is comprised young individuals rate species slow.