Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade

Autores
Moreno Azócar, Débora Lina; Bonino, Marcelo Fabián; Perotti, Maria Gabriela; Schulte, James A.; Abdala, Cristian Simón; Cruz, Felix Benjamin
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The body temperature of ectotherms depends on the environmental temperatures and behavioral adjustments, but morphology may also have an effect. Forexample, in colder environments, animals tend to be larger and to show higher thermal inertia, as proposed by Bergmann's rule and the heat balance hypothesis (HBH). Additionally, dark coloration increases solar radiation absorption and should accelerate heat gain (thermal melanism hypothesis, TMH). We tested Bergmann's rule, the HBH and the TMH within the Liolaemus goetschi lizard clade, which shows variability in body size and melanic coloration. We measured heating and cooling rates of live and euthanized animals, and tested how morphology and color affect these rates. Live organisms showless variable and faster heating rates compared with cooling rates, suggesting behavioral and/or physiological adjustments. Our results support Bergmann's rule and the HBH, as larger species show slower heating and cooling rates. However, we did not find a clear pattern to support the TMH. The influence of dorsal melanism on heating by radiation was masked by the body size effect in live animals, and results from euthanized individuals also showed no clear effects of melanism on heating rates. Comparison among three groups of live individuals with different degrees of melanism did not clarify the influence of melanism on heating rates.However, when euthanized animals fromthe same three groups were compared, we observed that darker euthanized animals actually heat faster than lighter ones, favoring the TMH. Although unresolved aspects remain, body size and coloration influenced heat exchange, suggesting complex thermoregulatory strategies in these lizards, probably regulated through physiology and behavior, which may allow these small lizards to inhabit harsh weather environments.
Fil: Moreno Azócar, Débora Lina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Bonino, Marcelo Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Perotti, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Schulte, James A.. Beloit College; Estados Unidos
Fil: Abdala, Cristian Simón. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo. Dirección de Zoología. Instituto de Herpetología; Argentina
Fil: Cruz, Felix Benjamin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Materia
BERGMANN'S RULE
COLD CLIMATES
HEAT BALANCE HYPOTHESIS
HEATING AND COOLING RATES
THERMAL INERTIA
THERMAL MELANISM HYPOTHESIS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/56875
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/56875
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi cladeMoreno Azócar, Débora LinaBonino, Marcelo FabiánPerotti, Maria GabrielaSchulte, James A.Abdala, Cristian SimónCruz, Felix BenjaminBERGMANN'S RULECOLD CLIMATESHEAT BALANCE HYPOTHESISHEATING AND COOLING RATESTHERMAL INERTIATHERMAL MELANISM HYPOTHESIShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The body temperature of ectotherms depends on the environmental temperatures and behavioral adjustments, but morphology may also have an effect. Forexample, in colder environments, animals tend to be larger and to show higher thermal inertia, as proposed by Bergmann's rule and the heat balance hypothesis (HBH). Additionally, dark coloration increases solar radiation absorption and should accelerate heat gain (thermal melanism hypothesis, TMH). We tested Bergmann's rule, the HBH and the TMH within the Liolaemus goetschi lizard clade, which shows variability in body size and melanic coloration. We measured heating and cooling rates of live and euthanized animals, and tested how morphology and color affect these rates. Live organisms showless variable and faster heating rates compared with cooling rates, suggesting behavioral and/or physiological adjustments. Our results support Bergmann's rule and the HBH, as larger species show slower heating and cooling rates. However, we did not find a clear pattern to support the TMH. The influence of dorsal melanism on heating by radiation was masked by the body size effect in live animals, and results from euthanized individuals also showed no clear effects of melanism on heating rates. Comparison among three groups of live individuals with different degrees of melanism did not clarify the influence of melanism on heating rates.However, when euthanized animals fromthe same three groups were compared, we observed that darker euthanized animals actually heat faster than lighter ones, favoring the TMH. Although unresolved aspects remain, body size and coloration influenced heat exchange, suggesting complex thermoregulatory strategies in these lizards, probably regulated through physiology and behavior, which may allow these small lizards to inhabit harsh weather environments.Fil: Moreno Azócar, Débora Lina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Bonino, Marcelo Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Perotti, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Schulte, James A.. Beloit College; Estados UnidosFil: Abdala, Cristian Simón. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo. Dirección de Zoología. Instituto de Herpetología; ArgentinaFil: Cruz, Felix Benjamin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaCompany of Biologists2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/56875Moreno Azócar, Débora Lina; Bonino, Marcelo Fabián; Perotti, Maria Gabriela; Schulte, James A.; Abdala, Cristian Simón; et al.; Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade; Company of Biologists; Journal of Experimental Biology; 219; 8; 8-2016; 1162-11710022-0949CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.129007info:eu-repo/semantics/altIdentifier/url/http://jeb.biologists.org/content/219/8/1162info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:41Zoai:ri.conicet.gov.ar:11336/56875instacron: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:34982025-09-03 09:57:42.01CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
title Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
spellingShingle Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
Moreno Azócar, Débora Lina
BERGMANN'S RULE
COLD CLIMATES
HEAT BALANCE HYPOTHESIS
HEATING AND COOLING RATES
THERMAL INERTIA
THERMAL MELANISM HYPOTHESIS
title_short Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
title_full Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
title_fullStr Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
title_full_unstemmed Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
title_sort Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade
dc.creator.none.fl_str_mv Moreno Azócar, Débora Lina
Bonino, Marcelo Fabián
Perotti, Maria Gabriela
Schulte, James A.
Abdala, Cristian Simón
Cruz, Felix Benjamin
author Moreno Azócar, Débora Lina
author_facet Moreno Azócar, Débora Lina
Bonino, Marcelo Fabián
Perotti, Maria Gabriela
Schulte, James A.
Abdala, Cristian Simón
Cruz, Felix Benjamin
author_role author
author2 Bonino, Marcelo Fabián
Perotti, Maria Gabriela
Schulte, James A.
Abdala, Cristian Simón
Cruz, Felix Benjamin
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv BERGMANN'S RULE
COLD CLIMATES
HEAT BALANCE HYPOTHESIS
HEATING AND COOLING RATES
THERMAL INERTIA
THERMAL MELANISM HYPOTHESIS
topic BERGMANN'S RULE
COLD CLIMATES
HEAT BALANCE HYPOTHESIS
HEATING AND COOLING RATES
THERMAL INERTIA
THERMAL MELANISM HYPOTHESIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The body temperature of ectotherms depends on the environmental temperatures and behavioral adjustments, but morphology may also have an effect. Forexample, in colder environments, animals tend to be larger and to show higher thermal inertia, as proposed by Bergmann's rule and the heat balance hypothesis (HBH). Additionally, dark coloration increases solar radiation absorption and should accelerate heat gain (thermal melanism hypothesis, TMH). We tested Bergmann's rule, the HBH and the TMH within the Liolaemus goetschi lizard clade, which shows variability in body size and melanic coloration. We measured heating and cooling rates of live and euthanized animals, and tested how morphology and color affect these rates. Live organisms showless variable and faster heating rates compared with cooling rates, suggesting behavioral and/or physiological adjustments. Our results support Bergmann's rule and the HBH, as larger species show slower heating and cooling rates. However, we did not find a clear pattern to support the TMH. The influence of dorsal melanism on heating by radiation was masked by the body size effect in live animals, and results from euthanized individuals also showed no clear effects of melanism on heating rates. Comparison among three groups of live individuals with different degrees of melanism did not clarify the influence of melanism on heating rates.However, when euthanized animals fromthe same three groups were compared, we observed that darker euthanized animals actually heat faster than lighter ones, favoring the TMH. Although unresolved aspects remain, body size and coloration influenced heat exchange, suggesting complex thermoregulatory strategies in these lizards, probably regulated through physiology and behavior, which may allow these small lizards to inhabit harsh weather environments.
Fil: Moreno Azócar, Débora Lina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Bonino, Marcelo Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Perotti, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Schulte, James A.. Beloit College; Estados Unidos
Fil: Abdala, Cristian Simón. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo. Dirección de Zoología. Instituto de Herpetología; Argentina
Fil: Cruz, Felix Benjamin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
description The body temperature of ectotherms depends on the environmental temperatures and behavioral adjustments, but morphology may also have an effect. Forexample, in colder environments, animals tend to be larger and to show higher thermal inertia, as proposed by Bergmann's rule and the heat balance hypothesis (HBH). Additionally, dark coloration increases solar radiation absorption and should accelerate heat gain (thermal melanism hypothesis, TMH). We tested Bergmann's rule, the HBH and the TMH within the Liolaemus goetschi lizard clade, which shows variability in body size and melanic coloration. We measured heating and cooling rates of live and euthanized animals, and tested how morphology and color affect these rates. Live organisms showless variable and faster heating rates compared with cooling rates, suggesting behavioral and/or physiological adjustments. Our results support Bergmann's rule and the HBH, as larger species show slower heating and cooling rates. However, we did not find a clear pattern to support the TMH. The influence of dorsal melanism on heating by radiation was masked by the body size effect in live animals, and results from euthanized individuals also showed no clear effects of melanism on heating rates. Comparison among three groups of live individuals with different degrees of melanism did not clarify the influence of melanism on heating rates.However, when euthanized animals fromthe same three groups were compared, we observed that darker euthanized animals actually heat faster than lighter ones, favoring the TMH. Although unresolved aspects remain, body size and coloration influenced heat exchange, suggesting complex thermoregulatory strategies in these lizards, probably regulated through physiology and behavior, which may allow these small lizards to inhabit harsh weather environments.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
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/11336/56875
Moreno Azócar, Débora Lina; Bonino, Marcelo Fabián; Perotti, Maria Gabriela; Schulte, James A.; Abdala, Cristian Simón; et al.; Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade; Company of Biologists; Journal of Experimental Biology; 219; 8; 8-2016; 1162-1171
0022-0949
CONICET Digital
CONICET
url http://hdl.handle.net/11336/56875
identifier_str_mv Moreno Azócar, Débora Lina; Bonino, Marcelo Fabián; Perotti, Maria Gabriela; Schulte, James A.; Abdala, Cristian Simón; et al.; Effect of body mass and melanism on heat balance in Liolaemus lizards of the goetschi clade; Company of Biologists; Journal of Experimental Biology; 219; 8; 8-2016; 1162-1171
0022-0949
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.129007
info:eu-repo/semantics/altIdentifier/url/http://jeb.biologists.org/content/219/8/1162
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Company of Biologists
publisher.none.fl_str_mv Company of Biologists
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 12.885934

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