Critical thermal limits depend on methodological context

Simple item page
dc.contributor.authorTerblanche, John S.en_ZA
dc.contributor.authorDeere, Jacques A.en_ZA
dc.contributor.authorClusella-Trullas, Susanaen_ZA
dc.contributor.authorJanion, Charleneen_ZA
dc.contributor.authorChown, Steven L.en_ZA
dc.date.accessioned2011-05-15T16:00:24Z
dc.date.available2011-05-15T16:00:24Z
dc.date.issued2007
dc.descriptionThe original publication is available at http://rspb.royalsocietypublishing.org/en_ZA
dc.description.abstractA 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. © 2007 The Royal Society.
dc.description.versionPublishers' Versionen_ZA
dc.format.extentp. 2935-2942 : ill.
dc.identifier.citationTerblanche, J. S.et al. 2007. Critical thermal limits depend on methodological context. Proceedings of the Royal Society B: Biological Sciences, 274(1628):2935-2942, doi:10.1098/rspb.2007.0985.en_ZA
dc.identifier.issn9628452
dc.identifier.otherdoi:10.1098/rspb.2007.0985
dc.identifier.urihttp://hdl.handle.net/10019.1/11679
dc.publisherRoyal Society of Publishingen_ZA
dc.rights.holderRoyal Society of Publishingen_ZA
dc.subjectBody temperature regulationen_ZA
dc.subjectTsetse Flies (Glossina pallidipes)en_ZA
dc.subjectCritical thermal limits (CTLs)en_ZA
dc.subjectGlossina (genus) -- Temperature toleranceen_ZA
dc.titleCritical thermal limits depend on methodological contexten_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
terblanche_critical_2007.pdf
Size:
164.68 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Research Articles (Botany and Zoology)