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dc.contributor.author
Barrionuevo, Melina
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dc.contributor.author
Frere, Esteban
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dc.date.available
2023-05-18T12:58:23Z
dc.date.issued
2012-09
dc.identifier.citation
Barrionuevo, Melina; Frere, Esteban; Magellanic penguin (Spheniscus magellanicus) embryos tolerate high temperature variations and low temperatures during incubation; Waterbird Society; Waterbirds; 35; 3; 9-2012; 485-489
dc.identifier.issn
1524-4695
dc.identifier.uri
http://hdl.handle.net/11336/197971
dc.description.abstract
Maintaining appropriate developmental temperatures during avian incubation is costly to the parents, so embryos may experience pronounced variations in temperature that can lead to embryo mortality and extended incubation periods, or that could affect the offspring phenotype in several bird species. The egg temperatures (N = 28 eggs) of free-living Magellanic Penguins (Spheniscus magellanicus) were recorded in a breeding colony in Puerto Deseado, Santa Cruz, Argentina. Three nests had atypical incubation patterns. Two nests experienced high temperature drops (average = 11.7 °C, minimum = 6.5°C, duration = 9 h) and another nest had a broad daily temperature range (max-min), i.e. 13.9 ±0.9 °C for the first egg and 14.1 ±0.8 °C for the second egg (range = 8-22°C during egg laying and 1837°C during advanced incubation). Thermal anomalies during incubation did not affect the embryonic viability, hatchling mass or fledging success. The survival of embryos despite these atypical incubation patterns may be an adaptive mechanism during the harsh weather conditions normally experienced by eggs throughout incubation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Waterbird Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COLD TOLERANCE
dc.subject
EGG TEMPERATURES
dc.subject
EMBRYO VIABILITY
dc.subject
INCUBATION
dc.subject
MAGELLANIC PENGUIN
dc.subject
REPRODUCTION
dc.subject
SPHENISCUS MAGELLANICUS
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Magellanic penguin (Spheniscus magellanicus) embryos tolerate high temperature variations and low temperatures during incubation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-05-15T13:10:00Z
dc.journal.volume
35
dc.journal.number
3
dc.journal.pagination
485-489
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Barrionuevo, Melina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Frere, Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Wildlife Conservation Society; Estados Unidos
dc.journal.title
Waterbirds
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1675/063.035.0313
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1675/063.035.0313
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