Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae)
| Autor: | Marika Mänd, Reet Karise, Külli Hiiesaar, Ingrid H. Williams, Ants-Johannes Martin, Anne Luik, Luule Metspalu, Aare Kuusik |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Larva
animal structures biology Apidae larvae active ventilation respiratory responses Hymenoptera Anatomy extracardiac pulsations biology.organism_classification QL1-991 Insect Science Bombus terrestris Respiration cardiovascular system Instar bombus terrestris Regular periods human activities Zoology Bumblebee heartbeat |
| Zdroj: | European Journal of Entomology, Vol 103, Iss 2, Pp 319-322 (2006) |
| ISSN: | 1802-8829 1210-5759 |
| Popis: | 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 occur- ring abdominal contractions play an essential role in respiration and/or in haemolymph circulation in larvae of B. terrestris. |
| Databáze: | OpenAIRE |
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