Artículo
Seasonal and ontogenetic change in diet composition of wild new world silverside Odontesthes argentinensis in temperate coastal area (South America)
Fecha de publicación:
06/2022
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Estuarine, Coastal and Shelf Science
ISSN:
0272-7714
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The Southwestern Atlantic coast (32–38°S) is one of the regions most affected by environmental changes (temperature, salinity, etc.), which can influence all life stages of fish species like de ones belong to the family Atherinopsidae (neotropical silversides). Considering that silverside species adapt easily to changing environments, we studied the diet composition and feeding strategy in relation with seasonal changes (intra- and inter-annual) and ontogenetic development of the silverside Odontesthes argentinensis. Stomach content of 416 specimens sampled between October 2015 and March 2017 (Partido de La Costa) and 68 specimens between July 2017 and August 2018 (Samborombón Bay) were analyzed. Zooplankton samples were taken and seawater environmental parameters were measured. The relative contribution of each prey was calculated and their evaluation by Amundsen graphical method, determined that importance of each prey, feeding strategy and niche width of O. argentinensis, changed not only among development stage but also among season and years. Results suggested that these variations were a reply to the complex environmental variation which affected the availability of food, so O. argentinensis could be used as regional indicator of environmental variations. The information obtained in this study evidences the importance of knowing variations in feeding strategy to get a better growth rate during rearing in captivity.
Palabras clave:
DIET
,
FEEDING STRATEGY
,
SILVERSIDE
,
SOUTHWESTERN ATLANTIC
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (IMITAB)
Articulos de INSTITUTO MULTIDISCIPLINARIO DE INVESTIGACIÓN Y TRANSFERENCIA AGROALIMENTARIA Y BIOTECNOLÓGICA
Articulos de INSTITUTO MULTIDISCIPLINARIO DE INVESTIGACIÓN Y TRANSFERENCIA AGROALIMENTARIA Y BIOTECNOLÓGICA
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos(INPA)
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Citación
Thompson, Gustavo Ariel; Biolé, Fernanda Gabriela; Volpedo, Alejandra; Seasonal and ontogenetic change in diet composition of wild new world silverside Odontesthes argentinensis in temperate coastal area (South America); Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 270; 6-2022; 1-12
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