Journals / Turkish Journal of Veterinary and Animal Sciences / 2005 / Cilt: 29 - Sayı: 3
Age, Growth and Condition of Capoeta capoeta angorae Hanko 1924 from the Upper Water Systems of the River Ceyhan, Turkey
- Pages
- 665–676
- DOI
- —
Abstract
The age, growth and condition factors were described for Capoeta capoeta angorae from the upper parts of the River Ceyhan from May 2000 to February 2001 and the differences in length in the same age group between streams and reservoirs populations were compared. A total of 629 C. c. angorae were examined and the ratio of males to females was estimated as 1.25:1.00. Eleven age groups were recorded from 0+ to 10+ years old and two- and three-year-old fish dominated the sample. The fork lengths (FLs) ranged from 3.1 to 41.5 cm and the majority of the samples were composed of 14.0 and 16.0 cm FL groups. The length-weight relationships were described as W = 0.0242 x FL2.8067 (r = 0.9776) for males and W = 0.0348 x FL2.6811 (r = 0.9841) for females. Growth was expressed in length and the von Bertalanffy growth parameters were estimated as L\infity =47.3 cm, K = 0.133, t0 = -0.761 for males and L\infity = 62.3 cm, K = 0.101, t0 = -0.598 for females. Growth performance index were also estimated as j’ = 5.693 for males and j’ = 5.970 for females. The differences in length in the same age groups between stream and reservoir populations were statistically significant (P < 0.05) and the FLs of reservoir populations were higher than those of the streams. The condition factors ranged from 0.687 to 2.615 with a mean value of 1.413 and the differences in condition between males and females were significant in the first and second age groups, while they were not significant at the other ages.
Özet
Yukarı Ceyhan Havzası’ndaki Capoeta capoeta angorae’nın yafl, büyüme ve kondüsyon faktörleri Mayıs 2000 ve fiubat 2001 tarihleri arasında incelenerek, dere ve baraj populasyonlarındaki aynı yafl gruplarına ait boylar karflılafltırılmıfltır. ‹ncelenen toplam 629 C. c. angorae bireyinde erkek:difli oranı 1,25:1,00 olarak hesaplanmıfltır. 0+-10+ arası toplam 11 yafl grubu belirlenmifl, 2+ ve 3+ yafl grupları ço¤unlu¤u oluflturmufltur. Çatal boylar 3,1 ile 41,5 cm arasında de¤iflmifl ve ço¤unlu¤un 14,0 ve 16,0 cm boy grubuna dahil oldu¤u görülmüfltür. Boy a¤ırlık iliflkileri erkekler için; W = 0,0242 x FL2,8067 (r = 0,9776) ve difliler için ise; W = 0,0348 x FL2,6811 (r = 0,9841) olarak bulunmufltur. Büyüme boy uzunlu¤u ile ifade edilmifl ve von Bertalanffy parametreleri erkekler için; L∞ = 47,3 cm, K = 0,133, t0 = -0,761 vedifliler içinse; L∞ = 62,3 cm, K = 0,101, t0 = -0,598; büyüme performansı indeksleri erkeklerde ϕ’ = 5,693, diflilerde ise ϕ’ = 5,970 fleklinde bulunmufltur. Baraj göllerinde yaflayan C. c. angorae’ların akarsulara göre daha büyük oldu¤u tesbit edilmifltir (P < 0,05) Kondüsyon faktörleri 0,687 ile 2,615 arasında de¤iflmifl ve ortalama 1,413 olarak bulunmufltur. Aynı yafl gruplarındaki difli ve erkek arasındaki kondüsyon farkı ilk yafllarda istatistiki açıdan önemli bulunurken ileriki yafllarda önemsiz bulunmufltur.