Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jtherbio.2016.07.019 |
Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile | |
Alveal Riquelme, Nicza1; Diaz-Paez, Helen1; Carlos Ortiz, Juan2 | |
通讯作者 | Alveal Riquelme, Nicza |
来源期刊 | JOURNAL OF THERMAL BIOLOGY
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ISSN | 0306-4565 |
出版年 | 2016 |
卷号 | 60页码:237-245 |
英文摘要 | 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 CTmin, CTmax, TTR, tau(heat), and tau(cool) in individuals of three sites from a latitudinal gradient (22 degrees S to 37 degrees S). The amphibians were acclimated to 10 degrees C and 20 degrees 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 degrees C, a critical thermal maxima of 34.6-41.4 degrees C, and a critical thermal minima of 2.6-0.8 degrees C, classifying the species as eurythermic. Furthermore, there were significant differences in CTmax 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. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Andean toad Thermal biology Latitudinal effect |
类型 | Article |
语种 | 英语 |
国家 | Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000382349700029 |
WOS关键词 | BODY-TEMPERATURE ; BUFO-SPINULOSUS ; HEATING RATES ; MONTE DESERT ; THERMOREGULATION ; ACCLIMATION ; VULNERABILITY ; PHYSIOLOGY ; EVOLUTION ; CAPACITY |
WOS类目 | Biology ; Zoology |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/194848 |
作者单位 | 1.Univ Concepcion, Dept Ciencias Basicas, Campus Los Angeles,Casilla 341, Los Angeles, Chile; 2.Univ Concepcion, Dept Zool, Campus Concepcion,Casilla 160-C, Concepcion, Chile |
推荐引用方式 GB/T 7714 | Alveal Riquelme, Nicza,Diaz-Paez, Helen,Carlos Ortiz, Juan. Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile[J],2016,60:237-245. |
APA | Alveal Riquelme, Nicza,Diaz-Paez, Helen,&Carlos Ortiz, Juan.(2016).Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile.JOURNAL OF THERMAL BIOLOGY,60,237-245. |
MLA | Alveal Riquelme, Nicza,et al."Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile".JOURNAL OF THERMAL BIOLOGY 60(2016):237-245. |
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