Some Biological Characteristics Of Cyprinus Carpio (L., 1758) Inhabiting Apa Dam Lake (Konya-Turkey)

This study was carried out in Apa Dam Lake between January 2001 and December 2001. Characteristics of sexuality status, age groups, growth and reproduction as well as condition factor of Cyprinus carpio (L. 1758) population, which inhabits this dam lake and is of economic importance, was investigated. The age composition of Cyprinus carpio samples were determined to have ranged from I to VIII. Sexual distribution proved to be 41,83 % for females and 43,02 % for males. Minimum fork length of this species was found to be 138 (mm), minimum weight 51 (gr), maximum fork length 525 (mm), and maximum weight 2724 (gr). The highest agespecific number within the population was observed in age group III, whereas the lowest one was in age group VII. Minimum and maximum condition factors were found to be 1,69 in age group VI and 2,26 in age group III, respectively. As far as the seasons are concerned, minimum condition factor was observed 1,84 in July, whereas the maximum one was 2,17 in June. Sexual maturity age was found to be III in the males and IV in the females. Reproduction period was determined to be June and July. GSI values based on the months ranged from 1,64 to 18,78. Fecundity has increased, rising from the age group IV to VIII.