Artículo
Otolith shape index: Is it a tool for trophic ecology studies?
Fecha de publicación:
11/2019
Editorial:
Cambridge University Press
Revista:
Journal of the Marine Biological Association of the United Kingdom
ISSN:
0025-3154
e-ISSN:
1469-7769
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this study was to test the effective separation of shape indices of otoliths of three species belonging to the family Sciaenidae before and after in vitro digestion. We measured 328 sagittal otoliths and applied six shape indices. Before the experiment, the aspect ratio (otolith height/otolith length%), circularity, ellipticity and relative surface of the sulcus acusticus were suitable for differentiating the species of genera Paralonchurus and Stellifer. Among the species of Stellifer, the aspect ratio and rectangularity were suitable. Otoliths exposed to in vitro digestion showed no significant differences in their morphometry before and after the experiment. After in vitro digestion, the aspect ratio and circularity were effective in separating Paralonchurus and Stellifer. However, none of the indices used in the present study were efficient to separate otoliths of congeneric species after in vitro digestion.
Palabras clave:
IN VITRO DIGESTION
,
SCIAENIDAE
,
SHAPE
,
TROPHIC ECOLOGY
Archivos asociados
Licencia
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; Spach, Henry Louis; Vaz Dos Santos, André Martins; Volpedo, Alejandra; Otolith shape index: Is it a tool for trophic ecology studies?; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 99; 7; 11-2019; 1675-1682
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