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Título: | Fin spine metals by LA-ICP-MS as a method for fish stock discrimination of Genidens barbus in anthropized estuaries. |
Autor(es): | Avigliano, Esteban Miller, Nathan Maichak de Carvalho, Barbara Córdoba Gironde, Sofia Tombari, Andrea Diana Volpedo, Alejandro |
Fecha de publicación: | 5-may-2020 |
Editorial: | Elsevier |
Citación: | Esteban Avigliano, Nathan Miller, Barbara Maichak de Carvalho, Sofía Córdoba Gironde, Andrea Tombari, Alejandra V. Volpedo (2020). Fin spine metals by LA-ICP-MS as a method for fish stock discrimination of Genidens barbus in anthropized estuaries. Fisheries Research; 230; 105625 |
Revista: | Fisheries Research |
Abstract: | Metal:Ca ratios (Li:Ca, Cu:Ca, Fe:Ca, Na:Ca, Rb:Ca, Pb:Ca and Zn:Ca) in fin spines of Genidens barbus, an endangered catfish species, were used as possible habitat markers from three Southwestern Atlantic sampling areas (Paranaguá estuarine complex, Brazil; Paraná River Delta, Argentina-Uruguay; and Negro River, Patagonia). Significant differences (p < 0.05) among sites for metal:Ca ratios support the utility of two prospective indicators: (1) habitat – outer 45 μm of spine edge and, (2) fish stock – outer ∼600 μm of spine. Multivariate analysis (MANOVA and PERMANOVA, p < 0.05) and lineal discriminant function analysis (LDA) proved relatively effective for discriminating both habitat (classification rate: 73%) and fish stock (classification rate: 66%) between sampling sites. Classification success improved to 85% (habitat) and 96% (fish stock) when LDAs incorporating Sr:Ca, Ba:Ca, Mg:Ca and Mn:Ca) from previous research (same samples) were performed. These results support the use of metal:Ca ratios in G. barbus fin spines as a non-lethal tool for discriminating habitat use and stocks of this endangered catfish. This approach may be applicable to other vulnerable species in polluted habitats. |
Resumen: | - |
URI: | http://rid.unrn.edu.ar/handle/20.500.12049/6714 |
Identificador DOI: | https://doi.org/10.1016/j.fishres.2020.105625 |
ISSN: | 0165-7836 |
Otros enlaces: | https://www.sciencedirect.com/science/article/pii/S0165783620301429?via%3Dihub |
Aparece en las colecciones: | Artículos |
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10.1016@j.fishres.2020.105625.pdf | 1,38 MB | Adobe PDF | Visualizar/Abrir |
Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899
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