Izvorni znanstveni članak
https://doi.org/10.14798/73.3.828
POPULATION STRUCTURE AND GROWTH OF RUDD Scardinius erythrophthalmus (L., 1758) FROM A EUTROPHIC LAKE IN NORTHERN ANATOLIA
Ramazan Yazıcı
; Laboratory and Veterinary Health Department, Çiçekdağı Technical Vocational Schools of Higher Education, Ahi Evran University, Kırşehir, Turkey
Savaş Yılmaz
; Department of Biology, Faculty of Arts and Science, Ondokuz Mayıs University, Samsun, Turkey
Okan Yazıcıoğlu
; Organic Farming Program, Botanic and Animal Production Department, Technical Vocational Schools of Higher Education, Ahi Evran University, Kırşehir, Turkey
Nazmi Polat
; Department of Biology, Faculty of Arts and Science, Ondokuz Mayıs University, Samsun, Turkey
Sažetak
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 FL3.386 and 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.
Ključne riječi
Age; growth parameters; condition factor; lapillus; Lake Ladik
Hrčak ID:
146473
URI
Datum izdavanja:
15.9.2015.
Posjeta: 1.342 *