Merzimen Çayı (Fırat Havzası) Garra rufa (Heckel, 1843) Popülasyonuna Ait Yaş ve Büyüme Parametreleri

Abstract

This study was carried out to determine the population parameters of Garra rufa in Merzimen Stream, Euphrates River Basin between May and November 2013. A total of 365 specimens were caught by electro shocker. The age of the sampled specimens ranged from 0 to V age groups. Total length and weight varied from 2.9 to 16.8 cm with a mean of 9.67±3.52 cm and 0.21 to 69.27 g with a mean of 15.69±14.75 g, respectively. The length-weight relationship was obtained as W=0.0124L 2.9888 and the b value indicated the isometric growth. Estimated population parameters were calculated as L∞: 19.98 cm, k: 0.275, t0: -1.157. Fulton's condition factor and growth performance index were estimated as K: 1.24 and Φꞌ: 2.04. Total (Z), natural (M), and fishing (F) mortalities and the exploitation rate (E) were estimated 0.452, 0.295, 0.156, and 0.347, respectively.

Mean length-weight relationship and condition factor of some Cyprinid fishes in Göynük Stream, Murat River of Eastern Türkiye, Bingöl

“…The length-weight relation of G. rufa was W=0.038L 2.57 for the females and W=0.011L 2.13 for the males with negative allometry (Student's t-test; p<0.05) (Table 2). G. rufa had positive allometric growth in the most the previous studies (Abedi et al, 2011;Birecikligil and Ciçek, 2011;Hamidan and Britton, 2013;Gerami et al, 2013;Ergüden, 2016;Çiçek et al, 2021). However, we found a negative allometry (b female : 2.57; b male :2.13, Student's t-test; p<0.05) LWR for G. rufa in Göynük Stream, Murat River (Table 2).…”

Length-Weight Relationships and Condition Factor of Garra turcica Karaman, 1971 from Asi River Basin, Turkey

“…Most of the previous studies of G. rufa (Abedi et al, 2011;Birecikligil & Ciçek, 2011;Hamidan & Britton, 2013;Gerami et al, 2013;Ergüden, 2016;Çiçek et al, 2021) have shown positive allometric growth. However, b coefficient in this study shows negative allometric growth, similar to a few studies (Pazira et al 2013;Segherloo et al, 2015, Keivany & Zamani Faradonbe 2017Aslan et al, 2021) of results from Tigris Basin, Persian Gulf Basin, Zohrer River, Iran and Murat River, Turkey (Table 4).…”

“…To date, there is no available data on length-weight and condition data of G. turcica in Turkey. However, only a few studies are conducted on the growth features (Kırankaya et al, 2008;Patimar et al, 2010;Pazira et al, 2013;Aslan et al, 2021;Çiçek et al, 2021) and length-weight relationships for G. rufa by differ researchers (Esmaeili & Ebrahimi 2006;Gerami et al, 2013;Hamidan & Britton, 2013;Keivany & Zamani-Faradonbe, 2017).…”