@article{article_779065, title={Growth and reproduction properties of endemic Capoeta kosswigi and Barbus ercisianus in the Deliçay Stream (Van, Turkey)}, journal={Ege Journal of Fisheries and Aquatic Sciences}, volume={38}, pages={293–302}, year={2021}, DOI={10.12714/egejfas.38.3.05}, url={https://izlik.org/JA48ZK34BM}, author={Atıcı, Ataman Altuğ and Sepil, Ahmet and Şen, Fazıl and Çavuş, Asude}, keywords={Barbus ercisianus, Capoeta kosswigi, büyüme, boy-ağırlık ilişkisi, üreme}, abstract={<div style="text-align:justify;"> <span style="font-size:14px;"> <br /> </span> </div> <hr /> <div style="text-align:justify;"> <span style="font-size:14px;">In this study, the growth and reproductive characteristics of </span> <i style="font-size:.9em;"> <span style="font-size:14px;">Capoeta kosswigi </span> </i> <span style="font-size:14px;"> Karaman, 1969 and </span> <i style="font-size:.9em;"> <span style="font-size:14px;">Barbus ercisianus </span> </i> <span style="font-size:14px;"> Karaman, 1971, which are endemic to the Lake Van Basin, in Deliçay (Van) were investigated. A total of 309 </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> and 288 </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;"> specimens were caught by electrofishing between April and August 2018. The fork length of </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> and </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;"> ranged from 3.7-26.1 cm and from 4.3-22.7 cm, and the total weights ranged from 0.6-227.4 g and from 1.2-140.0 g, respectively. The most intensive catching was in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> population of 5.0-6.9 (27.5%) cm and 0-19.9 (67.0%) g in the groups, and 12.0-13.9 (24.7%) cm and 0-9.9 (23.3%) g groups in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">. Condition factor was determined as 1.305±0.008 (0.798-1.886) in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> and 1.158±0.006 (0.864-1.559) in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">. The length-weight relationships were calculated as W = 0.01435 × L2.952 (r2 = 0.996) for </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;">and W = 0.01276 × L2.959 (r2 = 0.994) for </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">. The M:F ratio was calculated as 1:0.15 in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> and 1:0.64 in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">. It was established that </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> attained sexual maturity when they reached to 11 cm fork length for males, 18 cm fork length for females. Maturation of </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B.ercisianus </span> </i> <span style="font-size:14px;"> individuals occurred at 9 cm fork length in males and 12 cm fork length in females. The spawning in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;"> was observed from 1st week of May to 2nd week of July, and in </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">from 1st week of May to 1st week of August. It may be suggested that minimum catching size must be 20 cm fork length for </span> <i style="font-size:.9em;"> <span style="font-size:14px;">C. kosswigi </span> </i> <span style="font-size:14px;">and 15 cm fork length for </span> <i style="font-size:.9em;"> <span style="font-size:14px;">B. ercisianus </span> </i> <span style="font-size:14px;">. </span> </div> <hr /> <div style="text-align:justify;"> <span style="font-size:14px;"> <br /> </span> </div>}, number={3}, organization={Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi}