Cited by 532Physiological and biochemical adaptationsThermoregulation and physiological responsesInsect and Arachnid Ecology and Behavior

Critical thermal limits depend on methodological context

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Terblanche, John S, Deere, Jacques A, Clusella-Trullas, Susana, Janion, Charlene, Chown, Steven L·2007·Proceedings of the Royal Society B: Biological Sciences

Abstract

A full-factorial study of the effects of rates of temperature change and start temperatures was undertaken for both upper and lower critical thermal limits (CTLs) using the tsetse fly,Glossina pallidipes. Results show that rates of temperature change and start temperatures have highly significant effects on CTLs, although the duration of the experiment also has a major effect. Contrary to a widely held expectation, slower rates of temperature change (i.e. longer experimental duration) resulted in poorer thermal tolerance at both high and low temperatures. Thus, across treatments, a negative relationship existed between duration and upper CTL while a positive relationship existed between duration and lower CTL. Most importantly, for predicting tsetse distribution,G. pallidipes suffer loss of function at less severe temperatures under the most ecologically relevant experimental conditions for upper (0.06°C min−1; 35°C start temperature) and lower CTL (0.06°C min−1; 24°C start temperature). This suggests that the functional thermal range of G. pallidipes in the wild may be much narrower than previously suspected, approximately 20–40°C, and highlights their sensitivity to even moderate temperature variation. These effects are explained by limited plasticity of CTLs in this species over short time scales. The results of the present study have broad implications for understanding temperature tolerance in these and other terrestrial arthropods.

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  1. [21]21. Maudlin, P. H. Holmes & M. A. Miles), pp. 113-138. Wallingford, UK: CABI Publishing.
  2. [49]49. Maudlin, P. H. Holmes & M. A. Miles), pp. 139-180. Wallingford, UK: CABI Publishing.

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Authors
Terblanche, J. S., Deere, J. A., Clusella-Trullas, S., Janion, C., & Chown, S. L.
Affiliations
  • Stellenbosch University (ZA)
  • Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch UniversityPrivate Bag X1, Matieland 7602, Republic of South Africa
Venue
Proceedings of the Royal Society B: Biological Sciences
Published
2007-09-18
Volume
274
Issue
1628
Pages
2935-2943
ISSN
  • 0080-4649 (ISSN-L)
  • 0962-8452
  • 1471-2954
OpenAlex
W2168788964
Cited by
532
References
64
Citations by year
2026: 26 · 2025: 26 · 2024: 36 · 2023: 42 · 2022: 39 · 2021: 40 · 2020: 46 · 2019: 36 · 2018: 34 · 2017: 33 · 2016: 30 · 2015: 20 · 2014: 22 · 2013: 12 · 2012: 31
FWCI
11.85
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the Royal Society B Biological Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • SUNScholar (Stellenbosch University) (submittedVersion)
Funders
National Institute of Allergy and Infectious Diseases (R01AI052456, AI 52456)
Topics
  • Physical Sciences › Environmental Science › Ecology › Physiological and biochemical adaptations
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Insect and Arachnid Ecology and Behavior
Keywords
critical thermal limits, Glossina pallidipes, tsetse flies, heat tolerance, temperature change rate, experimental duration, thermal plasticity, terrestrial arthropods
MeSH terms
Acclimatization, Animals, Body Temperature Regulation, Temperature, Time Factors, Tsetse Flies

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