Sagittal otolith shape used in the identification of fishes of the genus Serranus
By V. Tuset, Paul L. Rosin, Antoni Lombarte. 2006
112 citations recorded by the source corpus.
Shape descriptors of saccular otoliths (sagittae) obtained by image analysis were investigated for the identification of three species of genus Serranus inhabiting the Canary Islands. The main of the paper was applied shape descriptors that could explain better the otolith shape differences found among these species. Some descriptors (EllipProffitt, CircProffitt, EllipVoss, TriVoss, ConvexCM1, ConvexCM2, Intrusiveness, Protrusiveness, ConvexJ, EllipLMedS, EllipMom, TriMom, Rectil, RectRobust, SqFFT, SymmL and SymmF) were used for the first time in a biological application as fish taxonomy. The variables were standardized with respect to otolith–fish length and the otolith weight added in the analysis. The standardization of otolith shape variable provided better results with respect to otolith length (82.7% of agreement) versus fish length (72.8%). ConvexR0, Ecc and Protrusiveness were the main shape variables that explain the inter-species variability. However, when the otolith weight was added in the analysis the discrimination was better with respect to fish length (86.4%), being the variable more significant.
Subfields: Aquatic Science, Molecular Biology, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/1dc30d4ca98788e2b012657a9512e779d1aab1bf
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In Aquatic Science
In Molecular Biology
In Nature and Landscape Conservation
Citations in the corpus
- Environmental and genetic determinant of otolith shape revealed by a non-indigenous tropical fish. (2010, methodology): “…effective method for describing outline shapes, but does not encourage intuitive understanding of the reason for subtle shape differences (Cadrin & Friedland 1999, Tuset et al. 2006, but see Parisi-Baradad et al. 2005), we used geometric morphometrics for a direct comparison of shape differences.”
- A comparison of otolith microchemistry and otolith shape analysis for the study of spatial variation in a deep-sea teleost, Coryphaenoides rupestris (2010, methodology): “slopes were equal across sites the variable was standardized for size by subtracting the product of otolith length and the common within-group slope (Reist 1985; Turan 2000; DeVries et al. 2002; Tuset et al. 2006).”