GROWTH AND CONDITION OF INVASIVE SPECIES PRUSSIAN CARP, CARASSIUS GIBELIO (BLOCH, 1782) IN A DAM LAKES FROM BUYUK MENDERES BASIN (TURKEY)

In this research, some biological characters as growth compositions, mortality, age-length, age-weight, condition factors of prussian carp, Carassius gibelio L. 1783 were determined from 172 specimens caught in the southwest of Turkey during the one year. The age compositions of specimens were between III-VI years, and sex percentages were found as 98.84% for females and 1.16% for males. The forked length varied between 23.80 and29.50 cm, while weight ranged from 356.30 to702.00 g. Growth of population was the most rapid at the first years of life afterwards growth ratio was slower. Growth were expressed in length and weight, and the von Bertalanffy growth equations were found as Lt = 41.46 (1- exp -0.101 ( t + 5.523 ) ) and Wt = 1579.54 (1- exp -0.101 ( t + 5.523) ) 2.74 The following equation is for length-weight relationship, W = 0.058375 LF 2.74        R 2 = 0.902 Key Words: Prussian carp, Invasive, Carassius gibelio , Age, Growth, Conditions, Turkey Ozet Bu calismada, Turkiye’nin guney batisinda bulunan bir baraj golu’nden 1 yil boyunca yakalanan 172 karas baliginin, Carassius gibelio L. 1783 buyume, olum oranlari, yas-boy, yas agirlik ve kondisyon faktorleri gibi bazi biyolojik ozellikleri belirlenmistir. Yas kompozisyonu III-VI yaslari arasinda dagilim gostermis olup, esey oranlari disilerde %98.84 ve erkeklerde %1.16 oranlarinda olmustur. Baligin catal boy varyaslari 23.80 ve 29.50 cm arasinda iken, agirliklari 356.30 g’dan 702.00 g kadar degismistir. Populasyonun buyumesi ilk yillarda daha hizli olurken, daha sonraki yillarda buyume oranlari dusmustur. Buyumeleri Boy ve Agirlik olarak,  von Bertalanffy buyume denklemleriyle bulunmustur. Lt = 41.46 (1- exp -0.101 ( t + 5.523 ) ) ve Wt = 1579.54 (1- exp -0.101 ( t + 5.523) ) 2.74 Boy-Agirlik iliskisi asagidaki sekilde olmustur. W = 0.03622 LF 2.74        R 2 = 0.996