Artículo
Infaunal mollusks as main prey for two sand bottoms sea stars off Puerto Quequén (Argentina)
Fecha de publicación:
11/2008
Editorial:
Revista de Biología Tropical
Revista:
Revista de Biología Tropical
ISSN:
0034-7744
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In order to characterize the diet of Astropecten brasiliensis and Luidia ludwigi scotti, the stomach content of both starfish species was analyzed. Starfishes were sampled for two years off Puerto Quequén coast in the Buenos Aires province (Argentina), at a depth between 40 and 60 m. The main prey items were analyzed in relation to the starfish’s sizes and identified to the lowest possible taxonomic category. A. brasiliensis showed the most diversified diet, comprising a total of twenty eight different prey species; bivalves and gastropods predominated. In contrast, L. ludwigi scotti only showed eight prey species with bivalves, foraminiferans and ophiuroids as the most frequently found groups. There were differences among the prey groups eaten by each sea star species, and prey in common differed by size. We found different prey species distribution according with L. ludwigi scotti sizes. There may be competition for food resources, and diet differences may allow the coexistence of A. brasiliensis and L. ludwigi scotti in the area.
Palabras clave:
ASTROPECTEN
,
LUIDIA
,
ASTEROIDS FOOD ITEMS
,
SANDY BOTTOMS
,
ARGENTINA
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Brogger, Martin Ignacio; Penchaszadeh, Pablo Enrique; Infaunal mollusks as main prey for two sand bottoms sea stars off Puerto Quequén (Argentina); Revista de Biología Tropical; Revista de Biología Tropical; 56; 3; 11-2008; 329-334
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