Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change

Detalhes bibliográficos
Autor(a) principal: Molina, Estefany Caroline Guevara
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: http://www.teses.usp.br/teses/disponiveis/41/41135/tde-02082019-130527/
Resumo: In this master thesis, the thermoregulation model proposed by Heath (1970) was updated, integrating the effects of the hydration level on the thermoregulation behavior and the thermal tolerance limits of the Bull Frog, Lithobates catesbeianus (Chapter I). For the thermoregulation behavior the preferred body temperatures (PBT) of hydrated and dehydrated individuals were measured, and as thermal tolerance, the Voluntary Thermal Maximum (VTMax) and the Critical Thermal Maximum (CTMax) were measured in groups of individuals with different hydration levels. Chapter II uses the information collected in chapter I to evaluate the effects of the hydration level on the time to loss the locomotor function of L.catesbeianus individuals exposed to their VTMax. Both chapters indicates that dehydration negatively affects not only the thermoregulation behavior and thermal tolerance of this species, but also the time it takes for individuals to lose their locomotor function when exposed to their VTMax. Our data suggest that dehydration is an important variable that must be included to evaluate the effects of high temperatures and dry conditions on wet skin ectotherms. The temperature-dehydration integration and its effects on these organisms can be included in mechanistic distribution models to update their climate vulnerability under current and future scenarios of climate change
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spelling Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate changeInteração do comportamento e fisiologia dos anuros em resposta ao estresse térmico e hídrico: uma abordagem para entender a vulnerabilidade dos anuros às mudanças climáticasBehaviorBiologia termalComportamentoDehydrationDesidrataçãoTemperaturaTemperatureThermal biologyIn this master thesis, the thermoregulation model proposed by Heath (1970) was updated, integrating the effects of the hydration level on the thermoregulation behavior and the thermal tolerance limits of the Bull Frog, Lithobates catesbeianus (Chapter I). For the thermoregulation behavior the preferred body temperatures (PBT) of hydrated and dehydrated individuals were measured, and as thermal tolerance, the Voluntary Thermal Maximum (VTMax) and the Critical Thermal Maximum (CTMax) were measured in groups of individuals with different hydration levels. Chapter II uses the information collected in chapter I to evaluate the effects of the hydration level on the time to loss the locomotor function of L.catesbeianus individuals exposed to their VTMax. Both chapters indicates that dehydration negatively affects not only the thermoregulation behavior and thermal tolerance of this species, but also the time it takes for individuals to lose their locomotor function when exposed to their VTMax. Our data suggest that dehydration is an important variable that must be included to evaluate the effects of high temperatures and dry conditions on wet skin ectotherms. The temperature-dehydration integration and its effects on these organisms can be included in mechanistic distribution models to update their climate vulnerability under current and future scenarios of climate changeNesta tese de mestrado foi atualizado o modelo de termorregulação proposto por Heath (1970), integrando os efeitos do nível de hidratação sobre o comportamento de termorregulação e a tolerância térmica da Rã touro, Lithobates catesbeianus (Capitulo I). Para o comportamento de termorregulação foram medidas as temperaturas corpóreas preferenciais (pelas suas siglas em inglês, PBT) de indivíduos hidratados e desidratados, e como tolerância térmica, foram medidas a temperatura voluntária máxima e a temperatura crítica máxima (pelas suas siglas em inglês, VTMax e CTMax, respetivamente) em grupos de indivíduos com diferentes níveis de hidratação. O capítulo II utiliza as informações levantadas no capitulo I para avaliar os efeitos do nível de hidratação sobre o tempo de perda da função locomotora de indivíduos de L.catesbeianus expostos a sua VTMax. O conjunto de dados dos capítulos I e II apontam que a desidratação afeta negativamente não só o comportamento de termorregulação e tolerância térmica desta espécie, mas também o tempo necessário para os indivíduos perderem sua função locomotora ao serem expostos a sua VTMax. Nossos dados sugerem que a desidratação é uma variável importante que deve ser incluída para avaliar os efeitos das altas temperaturas e secas nos ectotermos de pele úmida. A integração temperatura-desidratação e seus efeitos nestes organismos podem ser incluídos em modelos de distribuição mecanicistas para atualizar a vulnerabilidade climática deles nos cenários atuais e futuros das mudanças climáticasBiblioteca Digitais de Teses e Dissertações da USPGomes, Fernando RibeiroGuerrero, Agustin CamachoMolina, Estefany Caroline Guevara2019-05-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://www.teses.usp.br/teses/disponiveis/41/41135/tde-02082019-130527/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2019-08-20T23:14:58Zoai:teses.usp.br:tde-02082019-130527Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212019-08-20T23:14:58Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
Interação do comportamento e fisiologia dos anuros em resposta ao estresse térmico e hídrico: uma abordagem para entender a vulnerabilidade dos anuros às mudanças climáticas
title Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
spellingShingle Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
Molina, Estefany Caroline Guevara
Behavior
Biologia termal
Comportamento
Dehydration
Desidratação
Temperatura
Temperature
Thermal biology
title_short Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
title_full Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
title_fullStr Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
title_full_unstemmed Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
title_sort Interaction of behavior and physiology of anurans in response to thermal and hydric stress: an approach to understand the vulnerability of anurans to climate change
author Molina, Estefany Caroline Guevara
author_facet Molina, Estefany Caroline Guevara
author_role author
dc.contributor.none.fl_str_mv Gomes, Fernando Ribeiro
Guerrero, Agustin Camacho
dc.contributor.author.fl_str_mv Molina, Estefany Caroline Guevara
dc.subject.por.fl_str_mv Behavior
Biologia termal
Comportamento
Dehydration
Desidratação
Temperatura
Temperature
Thermal biology
topic Behavior
Biologia termal
Comportamento
Dehydration
Desidratação
Temperatura
Temperature
Thermal biology
description In this master thesis, the thermoregulation model proposed by Heath (1970) was updated, integrating the effects of the hydration level on the thermoregulation behavior and the thermal tolerance limits of the Bull Frog, Lithobates catesbeianus (Chapter I). For the thermoregulation behavior the preferred body temperatures (PBT) of hydrated and dehydrated individuals were measured, and as thermal tolerance, the Voluntary Thermal Maximum (VTMax) and the Critical Thermal Maximum (CTMax) were measured in groups of individuals with different hydration levels. Chapter II uses the information collected in chapter I to evaluate the effects of the hydration level on the time to loss the locomotor function of L.catesbeianus individuals exposed to their VTMax. Both chapters indicates that dehydration negatively affects not only the thermoregulation behavior and thermal tolerance of this species, but also the time it takes for individuals to lose their locomotor function when exposed to their VTMax. Our data suggest that dehydration is an important variable that must be included to evaluate the effects of high temperatures and dry conditions on wet skin ectotherms. The temperature-dehydration integration and its effects on these organisms can be included in mechanistic distribution models to update their climate vulnerability under current and future scenarios of climate change
publishDate 2019
dc.date.none.fl_str_mv 2019-05-30
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.teses.usp.br/teses/disponiveis/41/41135/tde-02082019-130527/
url http://www.teses.usp.br/teses/disponiveis/41/41135/tde-02082019-130527/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv
dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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