Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/23328940.2015.1096437 http://hdl.handle.net/11449/234469 |
Resumo: | The toad, Rhinella schneideri, is a large-bodied anuran amphibian with a broad distribution over South America. R. schneideri is known to be active at night during the warm/rainy months and goes into estivation during the dry/cold months; however, there is no data on the range of body temperatures (Tb) experienced by this toad in the field, and how environmental factors, thermoregulatory behaviors or activity influence them. By using implantable temperature dataloggers, we provide an examination of Tb variation during an entire year under a seminatural setting (emulating its natural habitat) monitored with thermosensors. We also used data on preferred Tb, allowing us to express the effectiveness of thermoregulation quantitatively. Paralleling its cycle of activity, R. schneideri exhibited differences in its daily and seasonal profile of Tb variation. During the active season, toads spent daytime hours in shelters and, therefore, did not explore microhabitats with higher thermal quality, such as open areas in the sun. At nighttime, the thermal suitability of microhabitats shifted as exposed microhabitats experienced greater temperature drops than the more insulated shelter. As toads became active at night, they were driven to the more exposed areas and, as a result, thermoregulatory effectiveness decreased. Our results, therefore, indicate that, during the active season, a compromise between thermoregulation and nocturnal activity may be at play. During the estivation period, R. schneideri spent the entire day cycle inside the shelter. As toads did not engage in nocturnal activity in those areas with low thermal quality, the overall effectiveness of thermoregulation was, indeed, elevated. In conclusion, we showed that daily and seasonal variation in Tb of an anuran species is highly associated with their respective pattern of activity and may involve important physiological and ecological compromises. |
id |
UNSP_3b287b6df4992983953415b001a72c76 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/234469 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazilbody temperatureoperative temperatureseasonsummerthermal preferencewinterThe toad, Rhinella schneideri, is a large-bodied anuran amphibian with a broad distribution over South America. R. schneideri is known to be active at night during the warm/rainy months and goes into estivation during the dry/cold months; however, there is no data on the range of body temperatures (Tb) experienced by this toad in the field, and how environmental factors, thermoregulatory behaviors or activity influence them. By using implantable temperature dataloggers, we provide an examination of Tb variation during an entire year under a seminatural setting (emulating its natural habitat) monitored with thermosensors. We also used data on preferred Tb, allowing us to express the effectiveness of thermoregulation quantitatively. Paralleling its cycle of activity, R. schneideri exhibited differences in its daily and seasonal profile of Tb variation. During the active season, toads spent daytime hours in shelters and, therefore, did not explore microhabitats with higher thermal quality, such as open areas in the sun. At nighttime, the thermal suitability of microhabitats shifted as exposed microhabitats experienced greater temperature drops than the more insulated shelter. As toads became active at night, they were driven to the more exposed areas and, as a result, thermoregulatory effectiveness decreased. Our results, therefore, indicate that, during the active season, a compromise between thermoregulation and nocturnal activity may be at play. During the estivation period, R. schneideri spent the entire day cycle inside the shelter. As toads did not engage in nocturnal activity in those areas with low thermal quality, the overall effectiveness of thermoregulation was, indeed, elevated. In conclusion, we showed that daily and seasonal variation in Tb of an anuran species is highly associated with their respective pattern of activity and may involve important physiological and ecological compromises.Department of Biology FFCLRP; University of São PauloDepartment of Zoology Institute of Bioscience; São Paulo State UniversityDepartment of Animal Morphology and Physiology College of Agricultural and Veterinarian Sciences; São Paulo State UniversityNational Institute of Science and Technology–Comparative Physiology (INCT- Fisiologia Comparada)Department of Zoology Institute of Bioscience; São Paulo State UniversityDepartment of Animal Morphology and Physiology College of Agricultural and Veterinarian Sciences; São Paulo State UniversityUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)National Institute of Science and Technology–Comparative Physiology (INCT- Fisiologia Comparada)Noronha-de-Souza, Carolina RBovo, Rafael P [UNESP]Gargaglioni, Luciane H [UNESP]Andrade, Denis V [UNESP]Bícego, Kênia C [UNESP]2022-05-02T18:01:44Z2022-05-02T18:01:44Z2015-10-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article554-562http://dx.doi.org/10.1080/23328940.2015.1096437Temperature, v. 2, n. 4, p. 554-562, 2015.2332-89592332-8940http://hdl.handle.net/11449/23446910.1080/23328940.2015.10964372-s2.0-84995929328Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTemperatureinfo:eu-repo/semantics/openAccess2024-06-06T18:42:27Zoai:repositorio.unesp.br:11449/234469Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-06T18:42:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
title |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
spellingShingle |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil Noronha-de-Souza, Carolina R body temperature operative temperature season summer thermal preference winter |
title_short |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
title_full |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
title_fullStr |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
title_full_unstemmed |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
title_sort |
Thermal biology of the toad Rhinella schneideri in a seminatural environment in southeastern Brazil |
author |
Noronha-de-Souza, Carolina R |
author_facet |
Noronha-de-Souza, Carolina R Bovo, Rafael P [UNESP] Gargaglioni, Luciane H [UNESP] Andrade, Denis V [UNESP] Bícego, Kênia C [UNESP] |
author_role |
author |
author2 |
Bovo, Rafael P [UNESP] Gargaglioni, Luciane H [UNESP] Andrade, Denis V [UNESP] Bícego, Kênia C [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) National Institute of Science and Technology–Comparative Physiology (INCT- Fisiologia Comparada) |
dc.contributor.author.fl_str_mv |
Noronha-de-Souza, Carolina R Bovo, Rafael P [UNESP] Gargaglioni, Luciane H [UNESP] Andrade, Denis V [UNESP] Bícego, Kênia C [UNESP] |
dc.subject.por.fl_str_mv |
body temperature operative temperature season summer thermal preference winter |
topic |
body temperature operative temperature season summer thermal preference winter |
description |
The toad, Rhinella schneideri, is a large-bodied anuran amphibian with a broad distribution over South America. R. schneideri is known to be active at night during the warm/rainy months and goes into estivation during the dry/cold months; however, there is no data on the range of body temperatures (Tb) experienced by this toad in the field, and how environmental factors, thermoregulatory behaviors or activity influence them. By using implantable temperature dataloggers, we provide an examination of Tb variation during an entire year under a seminatural setting (emulating its natural habitat) monitored with thermosensors. We also used data on preferred Tb, allowing us to express the effectiveness of thermoregulation quantitatively. Paralleling its cycle of activity, R. schneideri exhibited differences in its daily and seasonal profile of Tb variation. During the active season, toads spent daytime hours in shelters and, therefore, did not explore microhabitats with higher thermal quality, such as open areas in the sun. At nighttime, the thermal suitability of microhabitats shifted as exposed microhabitats experienced greater temperature drops than the more insulated shelter. As toads became active at night, they were driven to the more exposed areas and, as a result, thermoregulatory effectiveness decreased. Our results, therefore, indicate that, during the active season, a compromise between thermoregulation and nocturnal activity may be at play. During the estivation period, R. schneideri spent the entire day cycle inside the shelter. As toads did not engage in nocturnal activity in those areas with low thermal quality, the overall effectiveness of thermoregulation was, indeed, elevated. In conclusion, we showed that daily and seasonal variation in Tb of an anuran species is highly associated with their respective pattern of activity and may involve important physiological and ecological compromises. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-02 2022-05-02T18:01:44Z 2022-05-02T18:01:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/23328940.2015.1096437 Temperature, v. 2, n. 4, p. 554-562, 2015. 2332-8959 2332-8940 http://hdl.handle.net/11449/234469 10.1080/23328940.2015.1096437 2-s2.0-84995929328 |
url |
http://dx.doi.org/10.1080/23328940.2015.1096437 http://hdl.handle.net/11449/234469 |
identifier_str_mv |
Temperature, v. 2, n. 4, p. 554-562, 2015. 2332-8959 2332-8940 10.1080/23328940.2015.1096437 2-s2.0-84995929328 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Temperature |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
554-562 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045549821132800 |