RT Journal Article
T1 Differentiation of Lesueurigobius sanzi and L. suerii through otolith morphometric analysis
A1 Rubiales Gómez, Jaime S.
A1 Castro Gutiérrez, Jairo
A1 Rodríguez García, Carlos
A1 Sarmiento Carbajal, Jésica
A1 Cabrera Castro, Remedios
AB Otolith morphology is a valuable tool for species identification, particularly for morphologically similar species. This study evaluates the potential of otolith morphometry to distinguish Lesueurigobius sanzi and L. suerii, two closely related species commonly found as fishery discards in the Gulf of Cádiz. A total of 1,019 individuals (L. sanzi: 921, L. suerii: 98) were collected and their otoliths were analysed using the R package "shapeR" to obtain morphometric parameters and standardised wavelet coefficients. Statistical analyses revealed significant morphological differences between the species. Principal Component Analysis (PCA) showed that otolith length, perimeter, and shape indices contribute significantly to species differentiation. Furthermore, a Linear Discriminant Analysis (LDA) based on standardised wavelet coefficients demonstrated high classification accuracy (91.6%), confirming the effectiveness of this approach for species identification. These findings highlight the reliability of otolith morphometry as a robust method for distinguishing L. sanzi and L. suerii, providing valuable insights for fisheries management and biodiversity studies. This research contributes to the development of classification methods, essential for sustainable fishery assessments and ecological research.
PB Elsevier
SN 1096-0015
YR 2026
FD 2026
LK https://hdl.handle.net/10272/28128
UL https://hdl.handle.net/10272/28128
LA eng
NO Rubiales-Gómez, J. S., Castro-Gutiérrez, J., Rodríguez-García, C., Sarmiento-Carbajal, J., & Cabrera-Castro, R. (2026). Differentiation of Lesueurigobius sanzi and L. suerii through otolith morphometric analysis. Estuarine, Coastal and Shelf Science, 332, 109763. https://doi.org/10.1016/j.ecss.2026.109763
NO This research has been carried out within the framework of the ECOFISH project: eco-innovative strategies for sustainable fishing in the Gulf of Cadiz SPA. This initiative has been supported by the Biodiversity Foundation, the Ministry for Ecological Transition and Demographic Challenge, through the Pleamar Program, co-financed by the European Maritime and Fisheries Fund (EMFF) (grant numbers: 2019-016/PV/ PLEAMAR18/PT; 2020-013/PV/PLEAMAR19/PT; 2020-055/PV/ PLEAMAR20/PT; 2021/PV/PLEAMAR20-21/PT; 2021-060/PV/PLEA MAR21/PT).
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026