Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia

Autores
Stellatelli, Oscar Aníbal; Vega, Laura Estela; Block, Carolina; Cruz, Felix Benjamin
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Habitat modification alters several aspects of the original fauna, among them the opportunity for thermoregulation. Here, we studied the thermal biology of sympatric populations of two lizard species (Liolaemus multimaculatus and Liolaemus wiegmannii) in two different situations; a grassland without trees (natural habitat) and in a grassland plus the exotic tree Acacia longifolia (modified habitat), aiming to assess whether the structural alteration of native Pampean coastal grasslands of Argentina affects the thermal biology of these lizards. Field body temperatures, laboratory preferred temperatures, microenvironmental temperatures, operative temperatures, thermoregulatory efficiency and spatial distribution of each species were analyzed in both habitats. Environmental operative temperature was 0.64 1C lower in the modified habitat (Te¼38.39 1C) than in the natural (Te¼39.03 1C). Thermoregulatory efficiency (E) of L. wiegmannii was lower in modified sites (E¼0.58) than in natural sites (E¼0.70). This difference may be because this lizard occupied shaded microhabitats under acacias, with suboptimal thermal features. In contrast, L. multimaculatus in the modified habitat restricted its activity to open microenvironments that retained a similar structure to that of the native habitat, while maintaining high thermoregulatory efficiency in both habitat types (Emodified¼0.92; Enatural¼0.96). Although these two lizard species are phylogenetically close, they respond differently to human-induced changes in their thermal environments. The introduction of A. longifolia into coastal grasslands for L. wiegmannii in particular, this introduction converts its native habitat into a suboptimal thermal environment
Fil: Stellatelli, Oscar Aníbal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Vega, Laura Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Block, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; 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
Thermoregulation
Exotic Plants
Habitat Modification
Lizard
Liolaemus
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:11336/25493
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/25493
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifoliaStellatelli, Oscar AníbalVega, Laura EstelaBlock, CarolinaCruz, Felix BenjaminThermoregulationExotic PlantsHabitat ModificationLizardLiolaemushttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Habitat modification alters several aspects of the original fauna, among them the opportunity for thermoregulation. Here, we studied the thermal biology of sympatric populations of two lizard species (Liolaemus multimaculatus and Liolaemus wiegmannii) in two different situations; a grassland without trees (natural habitat) and in a grassland plus the exotic tree Acacia longifolia (modified habitat), aiming to assess whether the structural alteration of native Pampean coastal grasslands of Argentina affects the thermal biology of these lizards. Field body temperatures, laboratory preferred temperatures, microenvironmental temperatures, operative temperatures, thermoregulatory efficiency and spatial distribution of each species were analyzed in both habitats. Environmental operative temperature was 0.64 1C lower in the modified habitat (Te¼38.39 1C) than in the natural (Te¼39.03 1C). Thermoregulatory efficiency (E) of L. wiegmannii was lower in modified sites (E¼0.58) than in natural sites (E¼0.70). This difference may be because this lizard occupied shaded microhabitats under acacias, with suboptimal thermal features. In contrast, L. multimaculatus in the modified habitat restricted its activity to open microenvironments that retained a similar structure to that of the native habitat, while maintaining high thermoregulatory efficiency in both habitat types (Emodified¼0.92; Enatural¼0.96). Although these two lizard species are phylogenetically close, they respond differently to human-induced changes in their thermal environments. The introduction of A. longifolia into coastal grasslands for L. wiegmannii in particular, this introduction converts its native habitat into a suboptimal thermal environmentFil: Stellatelli, Oscar Aníbal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Vega, Laura Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Block, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; 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; ArgentinaPergamon-Elsevier Science Ltd.2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25493Stellatelli, Oscar Aníbal; Vega, Laura Estela; Block, Carolina; Cruz, Felix Benjamin; Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia; Pergamon-Elsevier Science Ltd.; Journal of Thermal Biology; 38; 3; 1-2013; 135-1420306-4565CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0306456513000028info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jtherbio.2012.12.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:25:01Zoai:ri.conicet.gov.ar:11336/25493instacron: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:34982025-09-10 13:25:01.743CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
title Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
spellingShingle Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
Stellatelli, Oscar Aníbal
Thermoregulation
Exotic Plants
Habitat Modification
Lizard
Liolaemus
title_short Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
title_full Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
title_fullStr Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
title_full_unstemmed Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
title_sort Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia
dc.creator.none.fl_str_mv Stellatelli, Oscar Aníbal
Vega, Laura Estela
Block, Carolina
Cruz, Felix Benjamin
author Stellatelli, Oscar Aníbal
author_facet Stellatelli, Oscar Aníbal
Vega, Laura Estela
Block, Carolina
Cruz, Felix Benjamin
author_role author
author2 Vega, Laura Estela
Block, Carolina
Cruz, Felix Benjamin
author2_role author
author
author
dc.subject.none.fl_str_mv Thermoregulation
Exotic Plants
Habitat Modification
Lizard
Liolaemus
topic Thermoregulation
Exotic Plants
Habitat Modification
Lizard
Liolaemus
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Habitat modification alters several aspects of the original fauna, among them the opportunity for thermoregulation. Here, we studied the thermal biology of sympatric populations of two lizard species (Liolaemus multimaculatus and Liolaemus wiegmannii) in two different situations; a grassland without trees (natural habitat) and in a grassland plus the exotic tree Acacia longifolia (modified habitat), aiming to assess whether the structural alteration of native Pampean coastal grasslands of Argentina affects the thermal biology of these lizards. Field body temperatures, laboratory preferred temperatures, microenvironmental temperatures, operative temperatures, thermoregulatory efficiency and spatial distribution of each species were analyzed in both habitats. Environmental operative temperature was 0.64 1C lower in the modified habitat (Te¼38.39 1C) than in the natural (Te¼39.03 1C). Thermoregulatory efficiency (E) of L. wiegmannii was lower in modified sites (E¼0.58) than in natural sites (E¼0.70). This difference may be because this lizard occupied shaded microhabitats under acacias, with suboptimal thermal features. In contrast, L. multimaculatus in the modified habitat restricted its activity to open microenvironments that retained a similar structure to that of the native habitat, while maintaining high thermoregulatory efficiency in both habitat types (Emodified¼0.92; Enatural¼0.96). Although these two lizard species are phylogenetically close, they respond differently to human-induced changes in their thermal environments. The introduction of A. longifolia into coastal grasslands for L. wiegmannii in particular, this introduction converts its native habitat into a suboptimal thermal environment
Fil: Stellatelli, Oscar Aníbal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Vega, Laura Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Block, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; 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 Habitat modification alters several aspects of the original fauna, among them the opportunity for thermoregulation. Here, we studied the thermal biology of sympatric populations of two lizard species (Liolaemus multimaculatus and Liolaemus wiegmannii) in two different situations; a grassland without trees (natural habitat) and in a grassland plus the exotic tree Acacia longifolia (modified habitat), aiming to assess whether the structural alteration of native Pampean coastal grasslands of Argentina affects the thermal biology of these lizards. Field body temperatures, laboratory preferred temperatures, microenvironmental temperatures, operative temperatures, thermoregulatory efficiency and spatial distribution of each species were analyzed in both habitats. Environmental operative temperature was 0.64 1C lower in the modified habitat (Te¼38.39 1C) than in the natural (Te¼39.03 1C). Thermoregulatory efficiency (E) of L. wiegmannii was lower in modified sites (E¼0.58) than in natural sites (E¼0.70). This difference may be because this lizard occupied shaded microhabitats under acacias, with suboptimal thermal features. In contrast, L. multimaculatus in the modified habitat restricted its activity to open microenvironments that retained a similar structure to that of the native habitat, while maintaining high thermoregulatory efficiency in both habitat types (Emodified¼0.92; Enatural¼0.96). Although these two lizard species are phylogenetically close, they respond differently to human-induced changes in their thermal environments. The introduction of A. longifolia into coastal grasslands for L. wiegmannii in particular, this introduction converts its native habitat into a suboptimal thermal environment
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/25493
Stellatelli, Oscar Aníbal; Vega, Laura Estela; Block, Carolina; Cruz, Felix Benjamin; Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia; Pergamon-Elsevier Science Ltd.; Journal of Thermal Biology; 38; 3; 1-2013; 135-142
0306-4565
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25493
identifier_str_mv Stellatelli, Oscar Aníbal; Vega, Laura Estela; Block, Carolina; Cruz, Felix Benjamin; Effects on the thermoregulatory efficiency of two native lizards as a consequence of the habitat modification by the introduction of the exotic tree Acacia longifolia; Pergamon-Elsevier Science Ltd.; Journal of Thermal Biology; 38; 3; 1-2013; 135-142
0306-4565
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0306456513000028
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jtherbio.2012.12.005
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd.
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd.
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 12.993085

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