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dc.contributor.authorSinclair, B.J.
dc.contributor.authorChown, S.L.
dc.date.accessioned2010-10-13T07:49:53Z
dc.date.available2010-10-13T07:49:53Z
dc.date.issued2006
dc.identifier.citationSinclair, B.J. & Chown, S.L.(2006), Rapid cold-hardening in a Karoo beetle, Afrinus sp. Physiological Entomology 31, 98–101en
dc.identifier.urihttp://hdl.handle.net/123456789/607
dc.description.abstractIn the insect rapid cold-hardening response, survival at subzero temperatures is greatly improved by a brief pre-exposure at a milder temperature. It is predicted that insects with minimal cold tolerance capabilities living in variable environments should use rapid cold-hardening to survive sudden cold snaps. This is tested in Afrinus sp., a beetle that lives in an exposed habitat on rock outcrops in the Karoo Desert, South Africa, where microclimate temperatures drop infrequently to below freezing. Afrinus sp. shows a significant rapid cold-hardening response: survival of a 2-h exposure to -6.5°C is much improved after pre-exposure to -2°C, to 0°C with a 2-h return to the rearing temperature, and to 40°C, but not after pre-exposure to 0°C. Little is known about the mechanism of the rapid cold-hardening response, although the data suggest that rapid coldhardening may be mediated via several different mechanisms.en
dc.description.sponsorshipCentre of Excellence for Invasion Biologyen
dc.format.extent89493 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherThe Royal Entomological Societyen
dc.subjectCold toleranceen
dc.subjectmicroclimateen
dc.subjectTenebrionidaeen
dc.subjectPimeliinaeen
dc.titleRapid cold-hardening in a Karoo beetle, Afrinus sp.en
dc.typeJournalArticlesen
dc.cibjournalPhysiological Entomologyen
dc.cibprojectNAen


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