Cleptoparasitismo intra e interespecífico en una colonia mixta de gaviotines Real (Sterna maxima) y Pico Amarillo (S. eurygnatha)

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Within seabirds, terns are frequently affected by foodrobbing. We document the occurrence of kleptoparasitism at a mixed-species colony ofRoyal (Sterna maxima) and Cayenne (S. eurygnatha) terns at Punta León, Chubut. In two seasons we observed both inter- and intra-specific food robbing by adult ter...

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Detalles Bibliográficos
Autores principales: Quintana, Flavio, Yorio, Pablo
Lenguaje:Español
Publicado: 1997
Materias:
AVES MARINAS
COLONIAS MIXTAS
CLEPTOPARASITISMO
GAVIOTINES
PATAGONIA
SEABIRDS
MIXEDCOLONIES
KLEPTOPARASITISM
TEMS
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v014_n04_p256
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Within seabirds, terns are frequently affected by foodrobbing. We document the occurrence of kleptoparasitism at a mixed-species colony ofRoyal (Sterna maxima) and Cayenne (S. eurygnatha) terns at Punta León, Chubut. In two seasons we observed both inter- and intra-specific food robbing by adult terns. The amount of food lost to pirates was relatively low, only 2% of prey brought back by the terns (n = 1127). Intra-specific food robbing was higher than inter-specific kleptopatasitism in the Royal Tern and similar in the Cayenne Tern. The percentage of food lost topirates in thecolony(2.1%,n = 921)wassimilarthan in groupsoftem chicksat the beach(2.4%, n = 206). Kleptoparasitismbetweentems at PuntaLeón appears to be of 1ittle importance with respect to its effectsonbothtem populations.

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