Respiration patterns of resting wasps (Vespula sp.)
Verfasser/ VerfasserinKäfer, Helmut ; Kovac, Helmut ; Stabentheiner, Anton
Erschienen in
Journal of Insect Physiology, Amsterdam [u.a.], 2013, Jg. 59, H. 4, S. 475-486
ErschienenElsevier, 2013
DokumenttypAufsatz in einer Zeitschrift
Schlagwörter (EN)Wasp / Vespula / Respiration patterns / Ventilation movement / Resting metabolism / Temperature
URNurn:nbn:at:at-ubg:3-2439 Persistent Identifier (URN)
 Das Werk ist frei verfügbar
Respiration patterns of resting wasps (Vespula sp.) [0.95 mb]
Zusammenfassung (Englisch)

We investigated the respiration patterns of wasps (Vespula sp.) in their viable temperature range (2.942.4 C) by measuring CO2 production and locomotor and endothermic activity. Wasps showed cycles of an interburstburst type at low ambient temperatures (Ta < 5 C) or typical discontinuous gas exchange patterns with closed, flutter and open phases. At high Ta of >31 C, CO2 emission became cyclic. With rising Ta they enhanced CO2-emission primarily by an exponential increase in respiration frequency, from 2.6 mHz at 4.7 C to 74 mHz at 39.7 C. In the same range of Ta CO2 release per cycle decreased from 38.9 to 26.4 l g1 cycle1. A comparison of wasps with other insects showed that they are among the insects with a low respiratory frequency at a given resting metabolic rate (RMR), and a relatively flat increase of respiratory frequency with RMR. CO2 emission was always accompanied by abdominal respiration movements in all open phases and in 71.4% of the flutter phases, often accompanied by body movements. Results suggest that resting wasps gain their highly efficient gas exchange to a considerable extent via the length and type of respiration movements.