The Population Structure And Growth Properties of Chalcalburnus mossulensis (Heckel, 1843) Caught From Askale Region of River Karasu

Authors : Mustafa TÜRKMEN, İhsan AKYURT

Pages : 95-111

View : 18 | Download : 12

Publication Date : 2000-12-01

Article Type : Research Paper

Abstract :In this study, the population structure and growth properties of Chalcalburnus mossulensis insert ignore into journalissuearticles values(Heckel, 1843); caught from Askale Region of River Karasu betwen February 1996 and January 1997 were examined. The age composition of population varied between I and VI ages, and the most abundant age group was the third age group insert ignore into journalissuearticles values(42.13%);. The population was composed of 51.74% females and 48.26% males. The fork length and the body weights of males and females varied between 8.9-18.1 cm, 3.6-67.9 g and 8.5-18.5 cm, 5.1-79.5 g respectively. The specific and relative growth for length and weight were maximum in the second age. The age-length, age-weight insert ignore into journalissuearticles values(Von Bertalanffy equations); and length-weight relationships of males and females were calculated as L t = 20.41 insert ignore into journalissuearticles values(1-e -0.2485insert ignore into journalissuearticles values(t+1.47); );, L t = 21.59 insert ignore into journalissuearticles values(1-e -0.1978insert ignore into journalissuearticles values(t+2.13); );, W t = 80.77 insert ignore into journalissuearticles values(1-e -0.2485insert ignore into journalissuearticles values(t+1.47); ); 2.828 , W t = 103.63 insert ignore into journalissuearticles values(1-e -0.1978insert ignore into journalissuearticles values(t+2.13); ); 3.082 and LogW= -1.796+2.828LogFL insert ignore into journalissuearticles values(r=0.943);, LogW= -2.097+3.082LogFL insert ignore into journalissuearticles values(r= 0.946); respectively. The mean condition factor of males and females were found as 1.023 and 1.047 respectively.
Keywords : Population Structure, Growth Properties, Condition Factor, Chalcalburnus mossulensis, Karasu River, Length Weight, Age Length, Age Weight