No cost of echolocation for bats in flight
- 1 April 1991
- journal article
- Published by Springer Nature in Nature
- Vol. 350 (6317), 421-423
- https://doi.org/10.1038/350421a0
Abstract
Echolocation has evolved in relatively few animal species. One constraint may be the high cost of producing pulses, the echoes of which can be detected over useful distances. The energy cost of echolocation in a small (6 g) insectivorous bat, when hanging at rest, was recently measured at 0.067 Joules per pulse, implying a mean cost for echolocation in flight of 9.5 x basal metabolic rate (range 7 to 12x). Because flight is very costly, whether the costs of echolocation and flying are additive is an important question. We measured the energy costs of flight in two species of small echolocating Microchiroptera using a novel combination of respirometry and doubly-labelled water. Flight energy expenditure (adjusted for body mass) was not significantly different between echolocating bats and non-echolocating bats and birds. The low cost of echolocation for flying vertebrates may have been a significant factor favouring its evolution in these groups.Keywords
This publication has 24 references indexed in Scilit:
- OLFACTORY-BULB SIZE AND NOCTURNALITY IN BIRDSEvolution, 1990
- The energy cost of echolocation in pipistrelle bats (Pipistrettus pipistrellus)Journal of Comparative Physiology A, 1989
- Validation of the Doubly Labeled Water Technique in Small Insectivorous Bats by Comparison with Indirect CalorimetryPhysiological Zoology, 1988
- Animal SonarPublished by Springer Nature ,1988
- Pigeon flight in a wind tunnelJournal of Comparative Physiology B, 1987
- Flying Primates? Megabats Have the Advanced Pathway from Eye to MidbrainScience, 1986
- Flight Physiology Of Flying Foxes, Pteropus PoliocephalusJournal of Experimental Biology, 1985
- Flight Energetics of Free-Living Sooty TernsOrnithology, 1984
- Ventilation and Oxygen Extraction in the Bat Pteropus Gouldii During Rest and Steady FlightJournal of Experimental Biology, 1981
- Evidence for echolocation in shrewsJournal of Experimental Zoology, 1964