期刊
JOURNAL OF THERMAL BIOLOGY
卷 48, 期 -, 页码 65-68出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtherbio.2014.12.006
关键词
Formicidae; Critical thermal maximum; Arkansas; Texas; Heat; Insects
资金
- NSF [IOS-0843120, DEB-1252614]
- Direct For Biological Sciences
- Division Of Environmental Biology [1252614] Funding Source: National Science Foundation
Changing climates are predicted to alter the distribution of thermal niches. Small ectotherms such as ants may be particularly vulnerable to heat injury and death. We quantified the critical thermal maxima of 92 ant colonies representing 14 common temperate ant species. The mean CTmax for all measured ants was 47.8 degrees C (+/- 0.27; range =40.2-51.2 degrees C), and within-colony variation was lower than among-colony variation. Critical thermal maxima differed among species and were negatively correlated with body size. Results of this study illustrate the importance of accounting for mass, among and within colony variation, and interspecific differences in diel activity patterns, which are often neglected in studies of ant thermal physiology. (C) 2014 Elsevier Ltd. All rights reserved.
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