Artículo
First record of anomalous otoliths of Menticirrhus americanus in the South Atlantic
Maichak de Carvalho, Barbara; Volpedo, Alejandra
; Queiroz Albuquerque, Cristiano; Fávaro, Luís Fernando
Fecha de publicación:
12/2019
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Journal of Applied Ichthyology - Zeitschrift für Angewandte Ichthyologie
ISSN:
0175-8659
e-ISSN:
1439-0426
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Sagitta otoliths are usually formed of calcium carbonate polymorphs as aragonite. The objective of this study was to verify which carbonate polymorph is predominant in the sagitta otolith of Menticirrhus americanus and check whether this pattern remains in otoliths with morphological alterations. Otoliths of M. americanus were obtained from five sites on the southeast-south coast of Brazil (São Sebastião (SS) 23°45′S–45°24′O, n = 29; Cananéia-Iguape Estuarine Complex (CI) 25°02′S–47°54′O, n = 30; Paranaguá Estuarine Complex (PEC) 25°28′S–48°20′O, n = 35; Itapoá (IT) 26°07′S–48°36′O, n = 31; Laguna (LA) 28°28′S–48°46′O, n = 13). The characterization of carbonate polymorphs of otoliths was performed through Raman spectroscopy, a photonic and non-destructive technique that analyzes molecular vibrations induced by laser. We analyzed 138 pairs of M. americanus otoliths, of which eight otoliths from different pairs presented morphological alterations (SS n = 1, CEP n = 5, IT n = 1, LA n = 1). The Raman spectra show that normal otoliths, that is, without morphological alterations, presented only aragonite in their structure. Among the otoliths that presented morphological alterations, the Raman spectra allowed to identify in six otoliths the deposition of aragonite and in only two otoliths the deposition of vaterite (one specimen of the PEC and one of SS).
Palabras clave:
otolith
,
chemical anomalies
,
south atlantic Ocean
,
Menticirrhus
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Identificadores
Colecciones
Articulos(INPA)
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Citación
Maichak de Carvalho, Barbara; Volpedo, Alejandra; Queiroz Albuquerque, Cristiano; Fávaro, Luís Fernando; First record of anomalous otoliths of Menticirrhus americanus in the South Atlantic; Wiley Blackwell Publishing, Inc; Journal of Applied Ichthyology - Zeitschrift für Angewandte Ichthyologie; 35; 6; 12-2019; 1286-1291
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