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Scoliosis deformity in Alburnus escherichii, an endemic freshwater leuciscid (Teleostei) from the Sakarya River Basin, Türkiye: morphological description and a case study Cover

Scoliosis deformity in Alburnus escherichii, an endemic freshwater leuciscid (Teleostei) from the Sakarya River Basin, Türkiye: morphological description and a case study

Open Access
|Apr 2026

Figures & Tables

Figure 1

Map showing the location of fish sampling (Sakaryabaşı regulator, Sakarya River Basin).

Figure 2

(A) A. escherichii, normal specimen (88.10 mm SL, 109.43 mm TL); (B) abnormal specimen (left side) (95.60 mm SL, 117.77 mm TL); (C) abnormal specimen (right side) (95.60 mm SL, 117.77 mm TL). SL, standard length; TL, total length.

Figure 3

Digital radiography of A. escherichii. (A) normal specimen (88.10 mm SL, 109.43 mm TL); (B) abnormal specimen (dorsal view) (95.60 mm SL, 117.77 mm TL). SL, standard length; TL, total length.

Figure 4

Abnormal specimen of A. escherichii (95.60 mm SL, 117.77 mm TL). (A) whole fish (dorsal view); (B) Digital radiography (dorsal view). SL, standard length; TL, total length.

Morphometric characteristics of the abnormal and normal specimens of A_ escherichii collected from the Sakarya River Basin, Türkiye

Morphometric characteristics (millimeter)Abnormal specimenNormal specimen
TL117.7109.43
SL95.688.1
SL (% TL)81.280.5
HL (% SL)20.720.1
ED (% HL)25.030.5
PreDFL (% SL)50.954.1
PostDFL (% SL)70.794.7
PrePFL (% SL)46.622.7
PrePELFL (% SL)63.948.9
PreAFL (% SL)75.169.0
PostAFL (% SL)75.983.4
BD (% SL)27.627.1
CPD (% SL)9.610.4
CPL (% SL)13.813.1
DOI: https://doi.org/10.26881/oahs-2026.1.09 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X
Language: English
Submitted on: Jan 16, 2026
Accepted on: Mar 23, 2026
Published on: Apr 15, 2026
Published by: University of Gdańsk
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2026 Zafer Alpaslan, Salim Serkan Güçlü, Atilla Arslan, Laith A. Jawad, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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