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.
|Authors||Mand, M., Kuusik, A., Martin, A-J., Williams, I. H., Luik, A., Karise, R., Metspalu, L. and Hiiesaar, K.|
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.
|Keywords||Bombus terrestris L.; passive suction ventilation; standard metabolic rate; respirometry|
|Year of Publication||2005|
|Journal citation||36 (4), pp. 561-570|
|Digital Object Identifier (DOI)||doi:10.1051/apido:2005045|
|Open access||Published as bronze (free) open access|
|Funder project or code||509|
|Behavioural ecology of pollinators|
File Access Level
|Online||19 Oct 2005|
|Publication process dates|
|Accepted||02 Mar 2005|
Permalink - https://repository.rothamsted.ac.uk/item/89828/discontinuous-gas-exchange-cycles-and-active-ventilation-in-pupae-of-the-bumblebee-bombus-terrestris