Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature

Autores
Buteler, Candela; Lábaque, María Carla; Leynaud, Gerardo Cristhian
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ectothermic animals depend on environmental temperature to regulate their body temperature. The Chaco Tortoise (Chelonoidis chilensis) is widespread in South America; however, populations are threatened mainly because of the pet trade. We described the activity pattern of C. chilensis relative to environmental temperature under semi-natural conditions in a zoo enclosure. We also estimated thermal parameters under controlled laboratory conditions: selected temperature (Tsel) and critical maximum temperature (CTmax) between sex and size indicators. In the enclosure, 81% of the observations were from inactive tortoises and 19% from active tortoises. Tortoises were active over a wide thermal range (12.0°?38.0° C) and Tsel was 34.4° ± 0.3° C (mean ± standard error), with no significant differences among sizes or between sexes. Heavier tortoises spent significantly more time at the lowest temperature than lighter ones. The range of CTmax was 36.3°?42.0° C and this parameter was inversely related to tortoise length but did not differ between sexes. The results suggest a wide thermal range in C. chilensis, dependence of thermal behavior on body size but not on sex, and a wider range of body temperatures in smaller individuals than in larger ones. Knowing the parameters that influence thermoregulation contributes to the improvement of management strategies under semi-natural conditions, which, in turn, can be extrapolated to wild populations.
Fil: Buteler, Candela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; Argentina
Fil: Lábaque, María Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; Argentina
Fil: Leynaud, Gerardo Cristhian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; Argentina
Materia
BODY TEMPERATURE
CHACO TORTOISE
THERMOREGULATION
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:11336/203430
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/203430
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum TemperatureButeler, CandelaLábaque, María CarlaLeynaud, Gerardo CristhianBODY TEMPERATURECHACO TORTOISETHERMOREGULATIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Ectothermic animals depend on environmental temperature to regulate their body temperature. The Chaco Tortoise (Chelonoidis chilensis) is widespread in South America; however, populations are threatened mainly because of the pet trade. We described the activity pattern of C. chilensis relative to environmental temperature under semi-natural conditions in a zoo enclosure. We also estimated thermal parameters under controlled laboratory conditions: selected temperature (Tsel) and critical maximum temperature (CTmax) between sex and size indicators. In the enclosure, 81% of the observations were from inactive tortoises and 19% from active tortoises. Tortoises were active over a wide thermal range (12.0°?38.0° C) and Tsel was 34.4° ± 0.3° C (mean ± standard error), with no significant differences among sizes or between sexes. Heavier tortoises spent significantly more time at the lowest temperature than lighter ones. The range of CTmax was 36.3°?42.0° C and this parameter was inversely related to tortoise length but did not differ between sexes. The results suggest a wide thermal range in C. chilensis, dependence of thermal behavior on body size but not on sex, and a wider range of body temperatures in smaller individuals than in larger ones. Knowing the parameters that influence thermoregulation contributes to the improvement of management strategies under semi-natural conditions, which, in turn, can be extrapolated to wild populations.Fil: Buteler, Candela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; ArgentinaFil: Lábaque, María Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Leynaud, Gerardo Cristhian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; ArgentinaHerpetological Conservation and Biology2022-04-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/203430Buteler, Candela; Lábaque, María Carla; Leynaud, Gerardo Cristhian; Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 17; 1; 30-4-2022; 111-1211931-7603CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.herpconbio.org/contents_vol17_issue1.htmlinfo:eu-repo/semantics/altIdentifier/url/https://www.herpconbio.org/Volume_17/Issue_1/Buteler_etal_2022.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:09:28Zoai:ri.conicet.gov.ar:11336/203430instacron: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:34982025-10-22 11:09:28.575CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
title Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
spellingShingle Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
Buteler, Candela
BODY TEMPERATURE
CHACO TORTOISE
THERMOREGULATION
title_short Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
title_full Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
title_fullStr Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
title_full_unstemmed Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
title_sort Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature
dc.creator.none.fl_str_mv Buteler, Candela
Lábaque, María Carla
Leynaud, Gerardo Cristhian
author Buteler, Candela
author_facet Buteler, Candela
Lábaque, María Carla
Leynaud, Gerardo Cristhian
author_role author
author2 Lábaque, María Carla
Leynaud, Gerardo Cristhian
author2_role author
author
dc.subject.none.fl_str_mv BODY TEMPERATURE
CHACO TORTOISE
THERMOREGULATION
topic BODY TEMPERATURE
CHACO TORTOISE
THERMOREGULATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ectothermic animals depend on environmental temperature to regulate their body temperature. The Chaco Tortoise (Chelonoidis chilensis) is widespread in South America; however, populations are threatened mainly because of the pet trade. We described the activity pattern of C. chilensis relative to environmental temperature under semi-natural conditions in a zoo enclosure. We also estimated thermal parameters under controlled laboratory conditions: selected temperature (Tsel) and critical maximum temperature (CTmax) between sex and size indicators. In the enclosure, 81% of the observations were from inactive tortoises and 19% from active tortoises. Tortoises were active over a wide thermal range (12.0°?38.0° C) and Tsel was 34.4° ± 0.3° C (mean ± standard error), with no significant differences among sizes or between sexes. Heavier tortoises spent significantly more time at the lowest temperature than lighter ones. The range of CTmax was 36.3°?42.0° C and this parameter was inversely related to tortoise length but did not differ between sexes. The results suggest a wide thermal range in C. chilensis, dependence of thermal behavior on body size but not on sex, and a wider range of body temperatures in smaller individuals than in larger ones. Knowing the parameters that influence thermoregulation contributes to the improvement of management strategies under semi-natural conditions, which, in turn, can be extrapolated to wild populations.
Fil: Buteler, Candela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; Argentina
Fil: Lábaque, María Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; Argentina
Fil: Leynaud, Gerardo Cristhian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Zoología Aplicada; Argentina
description Ectothermic animals depend on environmental temperature to regulate their body temperature. The Chaco Tortoise (Chelonoidis chilensis) is widespread in South America; however, populations are threatened mainly because of the pet trade. We described the activity pattern of C. chilensis relative to environmental temperature under semi-natural conditions in a zoo enclosure. We also estimated thermal parameters under controlled laboratory conditions: selected temperature (Tsel) and critical maximum temperature (CTmax) between sex and size indicators. In the enclosure, 81% of the observations were from inactive tortoises and 19% from active tortoises. Tortoises were active over a wide thermal range (12.0°?38.0° C) and Tsel was 34.4° ± 0.3° C (mean ± standard error), with no significant differences among sizes or between sexes. Heavier tortoises spent significantly more time at the lowest temperature than lighter ones. The range of CTmax was 36.3°?42.0° C and this parameter was inversely related to tortoise length but did not differ between sexes. The results suggest a wide thermal range in C. chilensis, dependence of thermal behavior on body size but not on sex, and a wider range of body temperatures in smaller individuals than in larger ones. Knowing the parameters that influence thermoregulation contributes to the improvement of management strategies under semi-natural conditions, which, in turn, can be extrapolated to wild populations.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-30
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/11336/203430
Buteler, Candela; Lábaque, María Carla; Leynaud, Gerardo Cristhian; Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 17; 1; 30-4-2022; 111-121
1931-7603
CONICET Digital
CONICET
url http://hdl.handle.net/11336/203430
identifier_str_mv Buteler, Candela; Lábaque, María Carla; Leynaud, Gerardo Cristhian; Thermal Biology of Zoo-Housed Chelonoidis chilensis: Determining the Activity Pattern and Estimating Selected and Critical Maximum Temperature; Herpetological Conservation and Biology; Herpetological Conservation and Biology; 17; 1; 30-4-2022; 111-121
1931-7603
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.herpconbio.org/contents_vol17_issue1.html
info:eu-repo/semantics/altIdentifier/url/https://www.herpconbio.org/Volume_17/Issue_1/Buteler_etal_2022.pdf
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 Herpetological Conservation and Biology
publisher.none.fl_str_mv Herpetological Conservation and Biology
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 12.982451

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