Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris

A - Papers appearing in refereed journals

Mand, M., Kuusik, A., Martin, A-J., Williams, I. H., Luik, A., Karise, R., Metspalu, L. and Hiiesaar, K. 2005. Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris. Apidologie. 36 (4), pp. 561-570.

AuthorsMand, M., Kuusik, A., Martin, A-J., Williams, I. H., Luik, A., Karise, R., Metspalu, L. and Hiiesaar, K.
Abstract

Discontinuous release of CO2 (bursts) or discontinuous gas exchange cycles (DGC), metabolic rate (MR) and ventilation movements were simultaneously recorded from the pupae of the bumblebee Bombus terrestris by means of an electrolytic respirometer and an infrared gas analyser (IRGA) combined with an infrared actograph (IRA). After recovering from stress, the early stage pupae showed irregular continuous respiration, mid-stage pupae displayed regular DGC. The bursts of CO2 release tended to coincide with abdominal contractions. In late stage pupae all bursts of CO2 were associated with active ventilation. During interburst periods, spikes appeared on the respirograms interpreted as micro-cycles of passive suction ventilation (PSV). After removal from their cocoons, the pupae exhibited frequent periods of muscular activity due to stress. Water loss of pupae inside cocoons was significantly less than that from pupae without cocoons.

KeywordsBombus terrestris L.; passive suction ventilation; standard metabolic rate; respirometry
Year of Publication2005
JournalApidologie
Journal citation36 (4), pp. 561-570
Digital Object Identifier (DOI)doi:10.1051/apido:2005045
Open accessPublished as bronze (free) open access
Funder project or code509
Behavioural ecology of pollinators
Publisher's version
Copyright license
Publisher copyright
File Access Level
Open
Output statusPublished
Publication dates
Online19 Oct 2005
Publication process dates
Accepted02 Mar 2005
ISSN0044-8435
PublisherSpringer France

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