Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae)

Title:

Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae)

Creator:

Mänd, Marika, Kuusik, Aare, Martin, Ants-Johannes , Williams, Ingrid H., Luik, Anne, Karise, Reet, Metspalu, Luule, and Hiiesaar, Küli

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:eb9a2945-7137-4f9c-b23e-3b3f4cf69c80
uuid:eb9a2945-7137-4f9c-b23e-3b3f4cf69c80

Subject:

Bombus terrestris, larvae, active ventilation, extracardiac pulsations, heartbeat, and respiratory responses

Type:

article, model:article, and TEXT

Description:

Using an opto-cardiograph combined with an infrared gas analyzer regular bouts of abdominal contractions were recorded from last instar larva of Bombus terrestris. The rate of CO2 release was about 0.7 ml g-1 h-1. The bouts of contractions were of two types: weak extracardiac pulsations and vigorous pumping. The frequencies of pulsations and pumping were 25-35 per min and 8-12 per min, respectively. Bouts of extracardiac pulsations and abdominal pumping were independent of each other and sometimes overlapped. Cardiac contractions (heartbeats) were continuous (57-63 pulses/min). This study suggests that the periodically occurring abdominal contractions play an essential role in respiration and/or in haemolymph circulation in larvae of B. terrestris.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2006 Volume:103 | Number:2

Harvested from:

CDK

Metadata only:

false