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Australian Journal of Zoology Australian Journal of Zoology Society
Evolutionary, molecular and comparative zoology
RESEARCH ARTICLE

Flexible roost selection by Gould’s wattled bats (Chalinolobus gouldii) using bat boxes in an urban landscape

Lisa N. Godinho A E , Linda F. Lumsden https://orcid.org/0000-0002-4967-4626 B , Graeme Coulson A and Stephen R. Griffiths https://orcid.org/0000-0003-3882-3654 C D
+ Author Affiliations
- Author Affiliations

A School of BioSciences, The University of Melbourne, Melbourne, Vic. 3010, Australia.

B Arthur Rylah Institute for Environmental Research, Department of Environment, Land, Water and Planning, Heidelberg, Vic. 3084, Australia.

C Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, Vic. 3086, Australia.

D Research Centre for Future Landscapes, La Trobe University, Bundoora, Vic. 3086, Australia.

E Corresponding author. Email: lisa.godinho@unimelb.edu.au

Australian Journal of Zoology 67(6) 269-280 https://doi.org/10.1071/ZO20022
Submitted: 16 April 2020  Accepted: 6 October 2020   Published: 4 November 2020

Abstract

Bat boxes are often used as a conservation tool in human-disturbed landscapes across Australia; however, to assess their effectiveness we need to understand the factors influencing their occupancy by insectivorous bats. We investigated roost selection by Gould’s wattled bat (Chalinolobus gouldii) using 76 bat boxes, comprising six designs, across three sites in suburban Melbourne, Australia. We conducted monthly surveys for a year and recorded the physical characteristics of each box. Five species of bats were recorded but Gould’s wattled bats dominated box occupancy year-round at all three sites. Group sizes ranged from 1 to 58 individuals, with maternity colonies forming over summer. There was little consistency in the use of selection criteria by Gould’s wattled bats when choosing a bat box as a day roost, with considerable variability across sites and seasons, highlighting the flexibility in roost site selection by this widespread, adaptable species. Our findings show that bat boxes can be an effective tool for providing supplementary roosts for Gould’s wattled bats in urbanised landscapes. However, little is known about the impact on the whole bat community, especially disturbance-sensitive taxa, of artificially increasing roosting resources for common species.

Keywords: artificial roost, Chalinolobus gouldii, Chiroptera, Gould’s wattled bat, occupancy rate, roost selection criteria.


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