Artículo de revista
Otolith edge fingerprints as approach for stock identification of Genidens barbus
Fecha
2017Registro en:
Estuarine, Coastal and Shelf Science 194 (2017) 92-96
10.1016/j.ecss.2017.06.008
Autor
Avigliano, Esteban
Maichak de Carvalho, Bárbara
Leisen, Mathieu
Romero, Rurik
Velasco, Gonzalo
Vianna, Marcelo
Barra Pantoja, Luis Fernando
Vanina Volpedo, Alejandra
Institución
Resumen
The purpose of this paper is to assess the use of multi-elemental otolith fingerprints as a tool to delimit catfish Genidens barbus fish stocks in four estuaries from the southwestern Atlantic Ocean. Barium:Calcium (Ca), Magnesium:Ca, Manganese:Ca, Sodium:Ca and Strontium:Ca ratios in the otolith edge were determined by LA-ICPMS. PERMANOVA analysis reveal significant differences in the multi-element signatures among estuaries (p = 0.0001-0.002). Reclassification rates of quadratic discriminant analysis are high, averaging 89.9% (78-100%). The new data presented here show that the otolith chemistry is a potential tool for stock identification, and indicates the presence of at least four stocks which should probably be handled independently. (C) 2017 Elsevier Ltd. All rights reserved.