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

Autores
Gutierrez-Pinto, Natalia; Mccracken, Kevin; Alza, Luis; Tubaro, Pablo Luis; Kopuchian, Cecilia; Astié, Andrea Alejandra; Cadena, Daniel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Gutierrez-Pinto, Natalia. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
Fil: Mccracken, Kevin. University Of Alaska; Estados Unidos
Fil: Alza, Luis. University Of Alaska; Estados Unidos
Fil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Kopuchian, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Astié, Andrea Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina
Fil: Cadena, Daniel. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
Materia
Adaptation
Andes
Biogeography
Ecological Gradients
Merganetta Armata
Temperature
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6527
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling The validity of ecogeographical rules is context-dependent: testing for Bergmann's and Allen's rules by latitude and elevation in a widespread Andean duckGutierrez-Pinto, NataliaMccracken, KevinAlza, LuisTubaro, Pablo LuisKopuchian, CeciliaAstié, Andrea AlejandraCadena, DanielAdaptationAndesBiogeographyEcological GradientsMerganetta ArmataTemperaturehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Consistent 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.Fil: Gutierrez-Pinto, Natalia. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; ColombiaFil: Mccracken, Kevin. University Of Alaska; Estados UnidosFil: Alza, Luis. University Of Alaska; Estados UnidosFil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Kopuchian, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Astié, Andrea Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; ArgentinaFil: Cadena, Daniel. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; ColombiaWiley Blackwell Publishing, Inc2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6527Gutierrez-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; 850-8620024-4066enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/bij.12249/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1111/bij.12249/abstractinfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:49:00Zoai:ri.conicet.gov.ar:11336/6527instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 14:49:00.676CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv 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
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
spellingShingle 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
Gutierrez-Pinto, Natalia
Adaptation
Andes
Biogeography
Ecological Gradients
Merganetta Armata
Temperature
title_short 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
title_full 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
title_fullStr 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
title_full_unstemmed 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
title_sort 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.creator.none.fl_str_mv Gutierrez-Pinto, Natalia
Mccracken, Kevin
Alza, Luis
Tubaro, Pablo Luis
Kopuchian, Cecilia
Astié, Andrea Alejandra
Cadena, Daniel
author Gutierrez-Pinto, Natalia
author_facet Gutierrez-Pinto, Natalia
Mccracken, Kevin
Alza, Luis
Tubaro, Pablo Luis
Kopuchian, Cecilia
Astié, Andrea Alejandra
Cadena, Daniel
author_role author
author2 Mccracken, Kevin
Alza, Luis
Tubaro, Pablo Luis
Kopuchian, Cecilia
Astié, Andrea Alejandra
Cadena, Daniel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Adaptation
Andes
Biogeography
Ecological Gradients
Merganetta Armata
Temperature
topic Adaptation
Andes
Biogeography
Ecological Gradients
Merganetta Armata
Temperature
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Gutierrez-Pinto, Natalia. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
Fil: Mccracken, Kevin. University Of Alaska; Estados Unidos
Fil: Alza, Luis. University Of Alaska; Estados Unidos
Fil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Kopuchian, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Astié, Andrea Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina
Fil: Cadena, Daniel. Universidad de los Andes. Departamento de Ciencias Biológicas. Laboratorio de Biología Evolutiva de Vertebrados; Colombia
description 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.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/6527
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
0024-4066
url http://hdl.handle.net/11336/6527
identifier_str_mv 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
0024-4066
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/bij.12249/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1111/bij.12249/abstract
info:eu-repo/semantics/altIdentifier/doi/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.365483

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