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Acclimation scope of the critical thermal limits in Agalychnis spurrelli (Hylidae) and Gastrotheca pseustes (Hemiphractidae) and their implications under climate change scenarios

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dc.contributor.advisor *Merino Viteri, Andrés Ricardo
dc.contributor.author Escobar Serrano, Daniela Estefanía
dc.date.accessioned 2017-06-22T13:44:04Z
dc.date.available 2017-06-22T13:44:04Z
dc.date.issued 2016
dc.identifier.uri http://repositorio.puce.edu.ec/handle/22000/13233
dc.description.abstract We analyzed the acclimation scope in the critical thermal limits (CTmax and CTmin) in tadpoles of two Ecuadorian frog species which strongly differ in thermal habitat conditions and altitudinal distribution ranges: (1) Agalychnis spurrelli (Hylidae), Durango, Esmeraldas province, 200 m.a.s.l. and (2) Gastrotheca pseustes (Hemiphractidae), Ambato-Guaranda road, Bolivar province, 3467 m.a.s.l. The tadpoles were acclimated for a three days period and then their thermal tolerances were tested through a thermal bath which rise 0.25 °C/min. In both species, the CTmax and CTmin increased along with the acclimation temperature. Agalychnis spurrelli was tolerant to higher temperatures; however, Gastrotheca pseustes was a better cold tolerant. Gastrotheca pseustes had a wider tolerance range than Agalychnis spurrelli. The ARRmax was higher in Agalychnis spurrelli (0.14) than Gastrotheca pseustes (0.05). The maximum exposure temperature (Te) in microhabitat at present conditions was 26.19 °C for Agalychnis spurrelli and 20.52 °C for Gastrotheca pseustes. In RCP 2.6 and 8.5 scenarios, the Te in both species, tended to increase in the future. In spite of the fact that Agalychnis spurrelli was a heat tolerant and had a greatest acclimation scope than Gastrotheca pseustes in present and future scenarios, it was the most vulnerable. This result was different to the one expected because we assume that high altitude species are more vulnerable to climate change. The results suggest that the vulnerability of the frogs of different altitude have to be reevaluated in base to eco-physiological information. en_US
dc.language.iso en en_US
dc.publisher PUCE en_US
dc.relation.ispartofseries CDT;4476
dc.subject RANAS en_US
dc.subject ANFIBIOS - ECUADOR en_US
dc.subject MORFOLOGÍA ANIMAL en_US
dc.subject CAMBIO AMBIENTAL GLOBAL en_US
dc.subject TEMPERATURA
dc.title Acclimation scope of the critical thermal limits in Agalychnis spurrelli (Hylidae) and Gastrotheca pseustes (Hemiphractidae) and their implications under climate change scenarios en_US
dc.type bachelorThesis en_US
dc.id.author 1723029649 en_US
dc.id.advisor 1711097012 en_US


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