IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Social foraging behavior of the Olrog´s Gull (Larus atlanticus)
Autor/es:
ZUMPANO FRANCISCO; GARCÍA GERMÁN OSCAR; NICOLLI ANABELLA RITA; CASTANO MELINA
Lugar:
Puerto Iguazu
Reunión:
Congreso; Ornithological Congress of the Americas; 2017
Institución organizadora:
Aves Argentinas, Sociedad Brasilera de Ornitología, Association of field ornithologist
Resumen:
Different studies have analyzed the trophic behaviour of the Olrog´s Gull (Larus atlanticus). However, the sex and foraging group size effects have not been evaluated yet. During 2016 (non-breeding season) 171 focal samplings of marked individuals (n=20) were performed at Mar Chiquita Reserve (37°46´ S, 57°27´ W). A total of 426 prey were registered (more than 80% of the items were identified as the burrowing crab Neohelice granulata). The crab?s size consumed differed from an uniform distribution (χ23=62.23, P