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Assessing fish length-otolith relationships in Scorpaenidae species: Implications for sustainable fisheries management in Antalya Bay, Türkiye Cover

Assessing fish length-otolith relationships in Scorpaenidae species: Implications for sustainable fisheries management in Antalya Bay, Türkiye

Open Access
|Dec 2025

Figures & Tables

Figure 1

Images of the four scorpaenid species examined. (A) S. elongata, 239 mm TL, (B) S. notata, 305 mm TL, (C) S. scrofa, (D) H. dactylopterus, 229 mm TL. TL, total length.
Images of the four scorpaenid species examined. (A) S. elongata, 239 mm TL, (B) S. notata, 305 mm TL, (C) S. scrofa, (D) H. dactylopterus, 229 mm TL. TL, total length.

Figure 2

Map showing the location of fish samples collection from the Antalya Bay, Mediterranean coast of Türkiye.
Map showing the location of fish samples collection from the Antalya Bay, Mediterranean coast of Türkiye.

Figure 3

Representative otolith of the four scorpaenid species examined showing OL and OW. (A) A, S. elongata, 148 mm TL, (B) S. notata, 139 mm TL, (C) S. scrofa, 328 mm TL, (D) H. dactylopterus, 134 mm TL. OL, otolith length; OW, otolith width; TL, total length.
Representative otolith of the four scorpaenid species examined showing OL and OW. (A) A, S. elongata, 148 mm TL, (B) S. notata, 139 mm TL, (C) S. scrofa, 328 mm TL, (D) H. dactylopterus, 134 mm TL. OL, otolith length; OW, otolith width; TL, total length.

Figure 4

Relationship of TL with otolith variables for S. elongata. TL, total length.
Relationship of TL with otolith variables for S. elongata. TL, total length.

Figure 5

Relationship of TL with otolith variables for S. notata. TL, total length.
Relationship of TL with otolith variables for S. notata. TL, total length.

Figure 6

Relationship of TL with otolith variables for S. scrofa. TL, total length.
Relationship of TL with otolith variables for S. scrofa. TL, total length.

Figure 7

Relationship of TL with otolith variables for H. dactylopterus. TL, total length.
Relationship of TL with otolith variables for H. dactylopterus. TL, total length.

Regression relationship parameters and descriptive coefficients between fish length and otolith parameters

SpeciesSexNMeasurementsParameters of the relationship
Equationr2p
S. elongataCombined68OL (μm)log(TL) = 0.752 × log(OL)—0.0260.82<0.001
OW (μm)log(TL) = 0.741 × log(OW)—0.8150.85<0.001
Male28OWe (g)log(TL) = 2.271 × log(OWe)—9.7410.73<0.001
Female40OWe (g)log(TL) = 1.686 × log(OWe)—7.8950.75<0.001
S. notataCombined56OL (μm)log(TL) = 1.022 × log(OL)—0.9700.93<0.001
OW (μm)log(TL) = 0.921 × log(OW)—1.5770.77<0.001
Male30OWe (g)log(TL) = 2.741 × log(OWe)—11.6430.88<0.001
Female26OWe (g)log(TL) = 2.596 × log(OWe)—11.4920.88<0.001
S. scrofaCombined70OL (μm)log(TL) = 0.867 × log(OL)—0.4040.90<0.001
OW (μm)log(TL) = 0.724 × log(OW)—0.8010.86<0.001
OWe (g)log(TL) = 2.050 × log(OWe)—9.1340.88<0.001
H. dactylopterusCombined54OL (μm)log(TL) = 0.711 × log(OL)—0.0010.77<0.001
OW (μm)log(TL) = 0.644 × log(OW)—0.4110.95<0.001
OWe (g)log(TL) = 1.968 × log(OWe)—8.8740.98<0.001

Minimum and maximum OL (μm), OW (μm), OW (g) and SDs of four scorpaenid fish species collected from Antalya Bay, Mediterranean Sea coast of Türkiye

SpeciesSexNVariablesLeftRightp
Min–MaxMean ± SDMin–MaxMean ± SD
S. elongataMale14OWe (g)0.012–0.0880.054 ± 0.0210.012–0.0880.053 ± 0.0200.03
Female20OWe (g)0.029–0.1500.072 ± 0.0260.029–0.1460.072 ± 0.0250.48
Combined sexes34OL (μm)0.006–0.0140.010 ± 0.0020.006–0.0140.010 ± 0.0020.53
OW (μm)0.003–0.0060.004 ± 0.0010.003–0.0060.004 ± 0.0010.04
OWe (g)0.012–0.1500.064 ± 0.0260.012–0.1460.064 ± 0.0250.91
S. notataMales15OWe (g)0.012–0.0660.048 ± 0.0190.013–0.0670.048 ± 0.0190.81
Females13OWe (g)0.013–0.0670.049 ± 0.0210.012–0.0690.049 ± 0.0220.92
Combined28OL (μm)0.006–0.0120.010 ± 0.0010.006–0.0120.010 ± 0.0020.95
OW (μm)0.003–0.0050.004 ± 0.0010.002–0.0050.004 ± 0.0010.97
OWe (g)0.012–0.0670.048 ± 0.020.012–0.0690.048 ± 0.020.84
S. scrofaCombined sexes35OL (μm)0.004–0.0020.009 ± 0.0020.004–0.0120.009 ± 0.0020.92
OW (μm)0.002–0.0060.004 ± 0.0010.002–0.0060.004 ± 0.0010.98
OWe (g)0.011–0.1140.049 ± 0.0260.010–0.1060.049 ± 0.0260.96
H. dactylopterusCombined sexes27OL (μm)0.005–0.0120.009 ± 0.0020.005–0.0120.009 ± 0.0020.17
OW (μm)0.003–0.0060.005 ± 0.0010.003–0.0060.005 ± 0.0010.62
OWe (g)0.015–0.1220.059 ± 0.0290.015–0.1250.058 ± 0.0300.89
DOI: https://doi.org/10.26881/oahs-2025.1.30 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X
Language: English
Page range: 353 - 363
Submitted on: Oct 28, 2025
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Accepted on: Dec 8, 2025
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Published on: Dec 31, 2025
Published by: University of Gdańsk
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Habil Uğur Koca, Seval Bahadir Koca, Mehmet Cilbiz, Laith A. Jawad, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.