Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile.
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| Title: | Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile. |
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| Authors: | Riquelme, Nicza Alveal1,2 nicza7@gmail.com, Díaz-Páez, Helen1, Ortiz, Juan Carlos2 |
| Source: | Journal of Thermal Biology. Aug2016, Vol. 60, p237-245. 9p. |
| Subjects: | Thermal tolerance (Physiology), Spinulosida, Bufonidae, Amphibians, Phenotypic plasticity |
| Geographic Terms: | Chile, Andes |
| Abstract: | Rhinella spinulosa is one of the anuran species with the greatest presence in Chile. This species mainly inhabits mountain habitats and is distributed latitudinally along the western slope of the Andes Range. These habitats undergo great temperature fluctuations, exerting pressure on the amphibian. To identify the physiological strategies and thermal behavior of this species, we analyzed the temperature variables CT min , CT max , TTR, τ heat , and τ cool in individuals of three sites from a latitudinal gradient (22°S to 37°S). The amphibians were acclimated to 10 °C and 20 °C and fed ad libitum . The results indicate that the species has a high thermal tolerance range, with a mean of 38.14±1.34 °C, a critical thermal maxima of 34.6–41.4 °C, and a critical thermal minima of 2.6–0.8 °C, classifying the species as eurythermic. Furthermore, there were significant differences in CT máx and TTR only in the northern site. The differences in thermal time constants between sites are due to the effects of size and body mass. For example, those from the central site had larger size and greater thermal inertia; therefore, they warmed and cooled in a slower manner. The wide thermal limits determined in R. spinulosa confirm that it is a thermo-generalist species, a characteristic that allows the species to survive in adverse microclimatic conditions. The level of plasticity in critical temperatures seems ecologically relevant and supports the acclimatization of thermal limits as an important factor for ectothermic animals to adapt to climate change. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Thermal Biology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 117295582 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Riquelme%2C+Nicza+Alveal%22">Riquelme, Nicza Alveal</searchLink><relatesTo>1,2</relatesTo><i> nicza7@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Díaz-Páez%2C+Helen%22">Díaz-Páez, Helen</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ortiz%2C+Juan+Carlos%22">Ortiz, Juan Carlos</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermal+Biology%22">Journal of Thermal Biology</searchLink>. Aug2016, Vol. 60, p237-245. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Thermal+tolerance+%28Physiology%29%22">Thermal tolerance (Physiology)</searchLink><br /><searchLink fieldCode="DE" term="%22Spinulosida%22">Spinulosida</searchLink><br /><searchLink fieldCode="DE" term="%22Bufonidae%22">Bufonidae</searchLink><br /><searchLink fieldCode="DE" term="%22Amphibians%22">Amphibians</searchLink><br /><searchLink fieldCode="DE" term="%22Phenotypic+plasticity%22">Phenotypic plasticity</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Chile%22">Chile</searchLink><br /><searchLink fieldCode="DE" term="%22Andes%22">Andes</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Rhinella spinulosa is one of the anuran species with the greatest presence in Chile. This species mainly inhabits mountain habitats and is distributed latitudinally along the western slope of the Andes Range. These habitats undergo great temperature fluctuations, exerting pressure on the amphibian. To identify the physiological strategies and thermal behavior of this species, we analyzed the temperature variables CT min , CT max , TTR, τ heat , and τ cool in individuals of three sites from a latitudinal gradient (22°S to 37°S). The amphibians were acclimated to 10 °C and 20 °C and fed ad libitum . The results indicate that the species has a high thermal tolerance range, with a mean of 38.14±1.34 °C, a critical thermal maxima of 34.6–41.4 °C, and a critical thermal minima of 2.6–0.8 °C, classifying the species as eurythermic. Furthermore, there were significant differences in CT máx and TTR only in the northern site. The differences in thermal time constants between sites are due to the effects of size and body mass. For example, those from the central site had larger size and greater thermal inertia; therefore, they warmed and cooled in a slower manner. The wide thermal limits determined in R. spinulosa confirm that it is a thermo-generalist species, a characteristic that allows the species to survive in adverse microclimatic conditions. The level of plasticity in critical temperatures seems ecologically relevant and supports the acclimatization of thermal limits as an important factor for ectothermic animals to adapt to climate change. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Thermal Biology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jtherbio.2016.07.019 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 237 Subjects: – SubjectFull: Thermal tolerance (Physiology) Type: general – SubjectFull: Spinulosida Type: general – SubjectFull: Bufonidae Type: general – SubjectFull: Amphibians Type: general – SubjectFull: Phenotypic plasticity Type: general – SubjectFull: Chile Type: general – SubjectFull: Andes Type: general Titles: – TitleFull: Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Riquelme, Nicza Alveal – PersonEntity: Name: NameFull: Díaz-Páez, Helen – PersonEntity: Name: NameFull: Ortiz, Juan Carlos IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 03064565 Numbering: – Type: volume Value: 60 Titles: – TitleFull: Journal of Thermal Biology Type: main |
| ResultId | 1 |
