Novel case of a tenebrionid beetle using discontinuous gas exchange cycle when dehydrated

In this study we show a link between the respiratory method and state of hydration in an arid dwelling tenebrionid beetle (Pimelia grandis). Dehydrated beetles use discontinuous gas exchange cycles with a flutter period consisting of several discrete bursts of CO2 release, whereas beetles given acce...

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Bibliographic Details
Published in:Physiological entomology 2002-03, Vol.27 (1), p.79-83
Main Authors: Duncan, Frances D., Krasnov, Boris, McMaster, Megan
Format: Article
Language:English
Subjects:
Discontinuous gas exchange
Pimelia grandis
tenebrionid
Tenebrionidae
water loss
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Summary:In this study we show a link between the respiratory method and state of hydration in an arid dwelling tenebrionid beetle (Pimelia grandis). Dehydrated beetles use discontinuous gas exchange cycles with a flutter period consisting of several discrete bursts of CO2 release, whereas beetles given access to food and water showed a form of continuous CO2 release. These data give support to the respiratory water conservation hypothesis for the discontinuous gas exchange cycle.
ISSN:0307-6962
1365-3032
DOI:10.1046/j.1365-3032.2002.00266.x