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dc.contributor.author
Gutierrez-Pinto, Natalia
dc.contributor.author
Mccracken, Kevin
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Alza, Luis
dc.contributor.author
Tubaro, Pablo Luis
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Kopuchian, Cecilia
dc.contributor.author
Astié, Andrea Alejandra
dc.contributor.author
Cadena, Daniel
dc.date.available
2016-07-14T22:24:04Z
dc.date.issued
2014-04
dc.identifier.citation
Gutierrez-Pinto, Natalia; Mccracken, Kevin; Alza, Luis; Tubaro, Pablo Luis; Kopuchian, Cecilia; et al.; The validity of ecogeographical rules is context-dependent: testing for Bergmann's and Allen's rules by latitude and elevation in a widespread Andean duck; Wiley Blackwell Publishing, Inc; Biological Journal Of The Linnean Society; 111; 4-2014; 850-862
dc.identifier.issn
0024-4066
dc.identifier.uri
http://hdl.handle.net/11336/6527
dc.description.abstract
Consistent responses by various organisms to common environmental pressures represent strong evidence of natural selection driving geographical variation. According to Bergmann´s and Allen´s rules, animals from colder habitats are larger and have smaller limbs than those from warmer habitats to minimize heat loss. Although evidence supporting both rules in different organisms exists, most studies have considered only elevational or latitudinal temperature gradients. We tested for the effects of temperature associated with both elevation and latitude on body and appendage size of torrent ducks (Merganetta armata), a widespread species in Andean rivers. We found a negative relationship between body size and temperature across latitude consistent with Bergmann´s rule, whereas there was a positive relationship between these variables along replicate elevational gradients at different latitudes. Limb-size variation did not support Allen´s rule along latitude, nor along elevation. Highelevation ducks were smaller and had longer wings than those inhabiting lower elevations within a river. We hypothesize that temperature is likely a major selective pressure acting on morphology across latitudes, although hypoxia or air density may be more important along elevational gradients. We conclude that the effect of temperature on morphology, and hence the likelihood of documenting ecogeographical rules, depends on the environmental context in which temperature variation is examined.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Adaptation
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Andes
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Biogeography
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Ecological Gradients
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Merganetta Armata
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Temperature
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Zoología, Ornitología, Entomología, Etología
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The validity of ecogeographical rules is context-dependent: testing for Bergmann's and Allen's rules by latitude and elevation in a widespread Andean duck
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-07-14T22:12:00Z
dc.journal.volume
111
dc.journal.pagination
850-862
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Gutierrez-Pinto, Natalia. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
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Fil: Mccracken, Kevin. University Of Alaska; Estados Unidos
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Fil: Alza, Luis. University Of Alaska; Estados Unidos
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Fil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
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Fil: Kopuchian, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
dc.description.fil
Fil: Astié, Andrea Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina
dc.description.fil
Fil: Cadena, Daniel. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
dc.journal.title
Biological Journal Of The Linnean Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/bij.12249/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/bij.12249/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1111/bij.12249


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