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<p>One hundred and twenty asterisci were obtained from 30 specimens each of <italic>Cyprinion kais</italic> and <italic>Cyprinion macrostomum</italic>. Significant relationships between otolith mass and the three fish lengths (TL, SL, and FL) were attained for <italic>C. kais</italic>. Similar associations were obtained for OL and the three fish lengths of <italic>C. macrostomum</italic>. For <italic>C</italic>. <italic>kais</italic>, the highest in the relation between otolith mass, hereafter referred to as OM, and fish fork length, henceforth known as FL (0.5894). The lowest coefficient of determination was observed between otolith width, hereafter called OW, and standard fish length, hereafter referred to as SL (0.2861). For <italic>C</italic>. <italic>macrostomum</italic>, the highest coefficient of determination was attained for the relation between OL and FL (0.7280) and the lowest for the relationship between OM and TL (0.1717). The analysis shows that evaluations of the body size of the two fish species investigated through biometric studies of otoliths are trustworthy.</p>
</abstract>

One hundred and twenty asterisci were obtained from 30 specimens each of Cyprinion kais and Cyprinion macrostomum. Significant relationships between otolith mass and the three fish lengths (TL, SL, and FL) were attained for C. kais. Similar associations were obtained for OL and the three fish lengths of C. macrostomum. For C. kais, the highest in the relation between otolith mass, hereafter referred to as OM, and fish fork length, henceforth known as FL (0.5894). The lowest coefficient of determination was observed between otolith width, hereafter called OW, and standard fish length, hereafter referred to as SL (0.2861). For C. macrostomum, the highest coefficient of determination was attained for the relation between OL and FL (0.7280) and the lowest for the relationship between OM and TL (0.1717). The analysis shows that evaluations of the body size of the two fish species investigated through biometric studies of otoliths are trustworthy.

Biometric relation between body size and otolith size of <italic>Cyprinion kais</italic> and <italic>C. macrostomum</italic> collected from Tigris River, Şirnak Province, Türkiye

Oceanological and Hydrobiological Studies

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Biometric relation between body size and otolith size of  and  collected from Tigris River, Şirnak Province, Türkiye

One hundred and twenty asterisci were obtained from 30 specimens each of Cyprinion kais and Cyprinion macrostomum. Significant relationships between otolith...

Parameter/Species	Range	Mean (± SD)	Equation	R²
Cyprinion kais
Otolith length (mm)	8.75 – 11.35	10.05 (1.23)	OL = 6 + 78.2 TL	0.4330
			OL = 180 + 81.0 SL	0.3406
			OL = 33 + 87.7 FL	0.3963
Otolith width (mm)	8.01 – 10.35	9.18 (1.02)	OW = 328 + 43.6 TL	0.4059
			OW = 450 + 42.7 SL	0.2861
			OW = 329 + 50.0 FL	0.3891
Otolith mass (g)	8 – 24	16 (0.98)	OM = -33.1 + 3.7 TL	0.4059
			OM = -28.1 + 4.1 SL	0.5360
			OM = -34.17 + 4.3 FL	0.5894
C. macrostomum
Otolith length (mm)	9.68 – 14.69	12.19 (0.11)	OL = 260 + 63.4 TL	0.7216
			OL = 219 + 74.9 SL	0.7001
			OL = 156 + 72.9 FL	0.7280
Otolith width (mm)	8.61 – 12.35	10.48 (0.13)	OW = 316 + 43.5 TL	0.6461
			OW = 366 + 50.7 SL	0.6093
			OW = 305 + 50.5 FL	0.6663
Otolith mass (g)	11 – 33	22 (0.97)	OM = 1.45 + 1.9 TL	0.1717
			OM = 1.66 + 1.6 SL	0.1828
			OM = -1.75 + 1.7 FL	0.2257

Biometric relation between body size and otolith size of Cyprinion kais and C. macrostomum collected from Tigris River, Şirnak Province, Türkiye

Article Category: Original research paper

Publicado en línea: 28 jun 2023

Páginas: 221 - 227

Recibido: 05 ene 2023

Aceptado: 25 abr 2023

DOI: https://doi.org/10.26881/oahs-2023.2.06

© 2023 Muhammed Yaşar Dörtbudak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Figure 2

Figure 3

Data analysis of Cyprinion kais and C. macrostomum asteriscus otolith collected from Tigris River, Şirnak Province, Türkiye. R2, coefficient of determination; SD, Standard deviation