... to balance the local oxygen supply between different body compartments of the flying animal. * Author for correspondence (e-mail: fritz.lehmann@uni-ulm.de ) 11 7 2005 © The Company of Biologists Limited 2005 2005 flight respiration discontinuous gas exchange cycle spiracle...

... ) 3 1 2005 © The Company of Biologists Limited 2005 2005 Scarabaeini discontinuous gas exchange cycle arid habitat subelytral cavity The discovery of anterograde airflow in a flightless dung beetle has brought into question the accepted role of the mesothoracic spiracles...

... during simultaneous measurements of CO 2 emission from the anterior mesothoracic spiracles and posterior body, which included the subelytral spiracles. However, when we sampled air directly from inside the subelytral cavity, we discovered that this pattern was reversed. A discontinuous gas exchange cycle...

... the subelytral cavity, of a large apterous beetle, Circellium bacchus . Flow-through respirometry revealed a marked discontinuous gas-exchange cycle(DGC) pattern from the anterior half of the body. Very little CO 2 was released from the posterior body, where the DGC was not apparent. Labelled air was shown...