The functional significance of ventilation frequency, and its relationship to oxygen demand in the resting brown long-eared bat, Plecotus auritus

Webb, P.I., Hays, G.C., Speakman, J.R. and Racey, P.A. 1992, The functional significance of ventilation frequency, and its relationship to oxygen demand in the resting brown long-eared bat, Plecotus auritus, Journal of comparative physiology B, vol. 162, no. 2, pp. 144-147.

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Title The functional significance of ventilation frequency, and its relationship to oxygen demand in the resting brown long-eared bat, Plecotus auritus
Author(s) Webb, P.I.
Hays, G.C.
Speakman, J.R.
Racey, P.A.
Journal name Journal of comparative physiology B
Volume number 162
Issue number 2
Start page 144
End page 147
Total pages 4
Publisher Springer
Place of publication Berlin, Germany
Publication date 1992-03
ISSN 0174-1578
1432-136X
Keyword(s) ventilation frequency
oxygen consumption
apnea
respirometry
bat
Plecotus auritus
Summary Mean oxygen consumption and simultaneous ventilation frequency of nine non-reproductive brown long-eared bats (body mass 8.53–13.33 g) were measured on 159 occasions. Ambient (chamber) temperature at which the measurements were made ranged from 10.8 to 41.1°C. Apneic ventilation occurred in 22 of the 59 measurements made when mean oxygen consumption was less than 0.5 ml·min-1. No records of apneic ventilation were obtained when it was over 0.5 ml·min-1. The relationship between ventilation frequency and mean oxygen consumption depended on whether ventilation was apneic or non-apneic. When ventilation was non-apneic the relationship was positive and log-linear. When ventilation was apneic the relationship was log-log. Within the thermoneutral zone ventilation frequency was not significantly different from that predicted from allometric equations for a terrestrial mammal of equivalent body mass, but was significantly greater than that predicted for a bird. A reduction in the amount of oxygen consumed per breath occurred at ambient temperatures above the upper critical temperature (39°C).
Language eng
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1992, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30058298

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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