Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)

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We studied the breeding ecology of Imperial Shags (Phalacrocorax atriceps) in Deseada Island (Santa Cruz, Argentina), during the breeding season of 1994-95. The shags arrived to the island in early August, they re-builded their nests and started to lay eggs during late October, with a peak of egg pr...

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Autores principales: Arrighi, Alejandro C., Navarro, Joaquín L.
Lenguaje:Español
Publicado: 1998
Materias:
IMPERIAL SHAG
PHALACTOCORAX ATRICEPS
BREEDING
PATAGONIA
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v015_n01_p064
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:hornero_v015_n01_p064
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spelling todo:hornero_v015_n01_p0642023-10-03T13:47:36Z Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina) Breeding Ecology of the Imperial Shag (Phalacrocorax atriceps), in Deseada Island (Santa Cruz, Argentina) Arrighi, Alejandro C. Navarro, Joaquín L. IMPERIAL SHAG PHALACTOCORAX ATRICEPS BREEDING PATAGONIA We studied the breeding ecology of Imperial Shags (Phalacrocorax atriceps) in Deseada Island (Santa Cruz, Argentina), during the breeding season of 1994-95. The shags arrived to the island in early August, they re-builded their nests and started to lay eggs during late October, with a peak of egg production in the first two weeks of November. The modal clutch size was three eggs. Hatehing started in late November. The maximum mean brood size was observed in mid- Oecember (1.4 chicks). Hatehing success was 53%, whereas the survival of chicks was 60%. Nelther hatching success nor chick survival differed among nests located in distinct sectors of the colony. In mid- February the juvenile (approximately 60 days of age): adult ratio was 1:3. All the juvenile shags left the island in late March, together with most adults. 1998-10 PDF Español info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar https://hdl.handle.net/20.500.12110/hornero_v015_n01_p064
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Español
orig_language_str_mv Español
topic IMPERIAL SHAG
PHALACTOCORAX ATRICEPS
BREEDING
PATAGONIA
spellingShingle IMPERIAL SHAG
PHALACTOCORAX ATRICEPS
BREEDING
PATAGONIA
Arrighi, Alejandro C.
Navarro, Joaquín L.
Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
topic_facet IMPERIAL SHAG
PHALACTOCORAX ATRICEPS
BREEDING
PATAGONIA
description We studied the breeding ecology of Imperial Shags (Phalacrocorax atriceps) in Deseada Island (Santa Cruz, Argentina), during the breeding season of 1994-95. The shags arrived to the island in early August, they re-builded their nests and started to lay eggs during late October, with a peak of egg production in the first two weeks of November. The modal clutch size was three eggs. Hatehing started in late November. The maximum mean brood size was observed in mid- Oecember (1.4 chicks). Hatehing success was 53%, whereas the survival of chicks was 60%. Nelther hatching success nor chick survival differed among nests located in distinct sectors of the colony. In mid- February the juvenile (approximately 60 days of age): adult ratio was 1:3. All the juvenile shags left the island in late March, together with most adults.
author Arrighi, Alejandro C.
Navarro, Joaquín L.
author_facet Arrighi, Alejandro C.
Navarro, Joaquín L.
author_sort Arrighi, Alejandro C.
title Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
title_short Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
title_full Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
title_fullStr Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
title_full_unstemmed Ecología reproductiva del Cormorán Imperial (Phalacrocorax atriceps), en Isla Deseada (Santa Cruz, Argentina)
title_sort ecología reproductiva del cormorán imperial (phalacrocorax atriceps), en isla deseada (santa cruz, argentina)
publishDate 1998
url https://hdl.handle.net/20.500.12110/hornero_v015_n01_p064
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AT navarrojoaquinl ecologiareproductivadelcormoranimperialphalacrocoraxatricepsenisladeseadasantacruzargentina
AT arrighialejandroc breedingecologyoftheimperialshagphalacrocoraxatricepsindeseadaislandsantacruzargentina
AT navarrojoaquinl breedingecologyoftheimperialshagphalacrocoraxatricepsindeseadaislandsantacruzargentina
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