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dc.contributor.author
Paez Vacas, Monica Isabel
dc.contributor.author
Funk, W. Chris
dc.date.available
2024-04-12T18:05:20Z
dc.date.issued
2024-02
dc.identifier.citation
Paez Vacas, Monica Isabel; Funk, W. Chris; Thermal limits along tropical elevational gradients: Poison frog tadpoles show plasticity but maintain divergence across elevation; Pergamon-Elsevier Science Ltd; Journal of Thermal Biology; 120; 103815; 2-2024; 1-12
dc.identifier.issn
0306-4565
dc.identifier.uri
http://hdl.handle.net/11336/232910
dc.description.abstract
Temperature is arguably one of the most critical environmental factors impacting organisms at molecular, organismal, and ecological levels. Temperature variation across elevation may cause divergent selection in physiological critical thermal limits (CTMAX and CTMIN). Generally, high elevation populations are predicted to withstand lower environmental temperatures than low elevation populations. Organisms can also exhibit phenotypic plasticity when temperature varies, although theory and empirical evidence suggest that tropical ectotherms have relatively limited ability to acclimate. To study the effect of temperature variation along elevational transects on thermal limits, we measured CTMAX and CTMIN of 934 tadpoles of a poison frog species, Epipedobates anthonyi, along two elevational gradients (200–1700 m asl) in southwestern Ecuador to investigate their thermal tolerance across elevation. We also tested if tadpoles could plastically shift their critical thermal limits in response to exposure to different temperatures representing the range of temperatures they experience in nature (20 °C, 24 °C, and 28 °C). Overall, we found that CTMAX did not change across elevation. In contrast, CTMIN was lower at higher elevations, suggesting that elevational variation in temperature influences this thermal trait. Moreover, all populations shifted their CTMAX and CTMIN according to treatment temperatures, demonstrating an acclimation response. Overall, trends in CTMIN among high, mid, and low elevation populations were maintained despite plastic responses to treatment temperature. These results demonstrate that, for tadpoles of E. anthonyi across tropical elevational gradients, temperature acts as a selective force for CTMIN, even when populations show acclimation abilities in both, CTMAX and CTMIN. Our findings advance our understanding on how environmental variation affects organisms’ evolutionary trajectories and their abilities to persist in a changing climate in a tropical biodiversity hotspot.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
THERMAL LIMITS
dc.subject
AQUATIC ECTOTHERMS
dc.subject
TROPICAL MOUNTAINS
dc.subject
ACCLIMATION
dc.subject
AMPHIBIANS
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Thermal limits along tropical elevational gradients: Poison frog tadpoles show plasticity but maintain divergence across elevation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-10T16:05:54Z
dc.identifier.eissn
1879-0992
dc.journal.volume
120
dc.journal.number
103815
dc.journal.pagination
1-12
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Paez Vacas, Monica Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina. Centro Jambatu de Investigación y Conservación de Anfibios; Ecuador. Universidad Tecnologica Indoamerica.; Ecuador
dc.description.fil
Fil: Funk, W. Chris. State University Of Colorado-fort Collins. Dept.of Biology; Estados Unidos
dc.journal.title
Journal of Thermal Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0306456524000330
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jtherbio.2024.103815
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