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A study on some biological parameters of the population of Chondrostoma angorense Elvira, 1987 (Actinopterygii: Cypriniformes: Leuciscidae) in the Devrez River, Türkiye Cover

A study on some biological parameters of the population of Chondrostoma angorense Elvira, 1987 (Actinopterygii: Cypriniformes: Leuciscidae) in the Devrez River, Türkiye

Open Access
|Apr 2025

Figures & Tables

Figure 1

Map of the Devrez River and sampling sites.
Map of the Devrez River and sampling sites.

Figure 2

Length–weight relationship of the sampled C. angorense.
Length–weight relationship of the sampled C. angorense.

Figure 3

Monthly variations in CF (mean ± SD) of C. angorense. CF, condition factor; SD, standard deviation.
Monthly variations in CF (mean ± SD) of C. angorense. CF, condition factor; SD, standard deviation.

Figure 4

Monthly variations in GSI and oocyte diameter values with SD of C. angorense. GSI, Gonadosomatic Index; SD, standard deviation.
Monthly variations in GSI and oocyte diameter values with SD of C. angorense. GSI, Gonadosomatic Index; SD, standard deviation.

Figure 5

Ogive of first maturity for females and males of C. angorense.
Ogive of first maturity for females and males of C. angorense.

Figure 6

Relationship between fecundity and FL, GW, total weight, and the age of female C. angorense. FL, fork length; GW, gonad weight.
Relationship between fecundity and FL, GW, total weight, and the age of female C. angorense. FL, fork length; GW, gonad weight.

Mean length and CF-at-age of Chondrostoma angorense in the Devrez River_

Age (years)TL (cm)CF
FemaleMaleFemale and MaleFemale and Male
nMean ± SDnMean ± SDnMean ± SDRangeMean ± SDRange
I--513.2 ± 0.91513.2 ± 0.9111.8–14.01.12 ± 0.051.06–1.17
II514.9 ± 2.511116.8 ± 0.901616.0 ± 1.7411.4–17.81.10 ± 0.060.96–1.23
III2618.3 ± 1.722119.2 ± 1.004718.6 ± 1.4416.0–22.21.11 ± 0.090.80–1.33
IV1921.7 ± 1.501421.1 ± 1.103321.4 ± 1.3219.6–24.11.12 ± 0.110.83–1.47
V223.6 ± 0.21--223.7 ± 0.2123.5–23.81.22 ± 0.031.20–1.24
DOI: https://doi.org/10.26881/oahs-2025.1.02 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X
Language: English
Page range: 10 - 20
Submitted on: Jun 27, 2024
Accepted on: Oct 15, 2024
Published on: Apr 15, 2025
Published by: University of Gdańsk
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Ozlem Ablak Gurbuz, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.