Social Ecology of the Chocolate Wattled Bat, Chalinolobus morio, in south-east Queensland, Australia

Bruce Thomson (2010). Social Ecology of the Chocolate Wattled Bat, Chalinolobus morio, in south-east Queensland, Australia PhD Thesis, School of Biomedical Sciences, The University of Queensland.

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Author Bruce Thomson
Thesis Title Social Ecology of the Chocolate Wattled Bat, Chalinolobus morio, in south-east Queensland, Australia
School, Centre or Institute School of Biomedical Sciences
Institution The University of Queensland
Publication date 2010-08
Thesis type PhD Thesis
Supervisor Dr Roger Coles
Dr Jenny Ovenden
Prof Jack Pettigrew
Total pages 264
Total colour pages 43
Total black and white pages 221
Subjects 11 Medical and Health Sciences
Abstract/Summary This thesis investigates aspects of the social ecology of the Australian Chocolate Wattled Bat (Chalinolobus morio) at a maternity roost in the Bunya Mountains, south-east Queensland. The maternity colony is located in the roof and walls of a disused building in the campground of the Bunya Mountains National Park. The study employs four primary lines of investigation to explore aspects of the social ecology of this species, examining the effect of microclimate on roost selection, the nature of interactions between roosting individuals, the colonies genetic structure through mtDNA analysis and patterns of roost usage and association between colony members. Thermal regimes in the maternity roosts were found to be different to those in all other roosts and may be a factor in determining use of the Bunya Mountains site, particularly for female bats. Video monitoring identified a range of behaviours including reciprocal, simultaneous allogrooming in both sexes. This is possibly the first time that such behaviour has been recorded in male vespertilionid bats. Mitochondrial DNA and PIT tag analysis indicated that maternity colonies consist of natally philopatric individuals with a negligible degree of contemporary mtDNA exchange between colonies. A typical ”Temperate Vespertilionid Breeding System” is suggested for this species where philopatric summer maternity colonies disperse over winter, allowing inter-colony mixing, and mating takes place in this expanded gene pool. This pattern maintains heterozygosity, while also allowing male and female natal philopatry to occur in summer maternity colonies during the non-mating period. Roost usage patterns were examined in detail and found to differ between males and females. A model is suggested to explain the fitness benefits that this pattern of roost usage is likely to confer.
Keyword Microchiroptera, Chiroptera, Chalinolobus, morio, microbats, bats, animal behaviour, genetics, social behaviour, roost usage, roosting, maternity, Australian, pit tag, association patterns, mtDNA, mitochondrial DNA, tree-dwelling, association rate, Queensland
Additional Notes Colour - 24, 50, 66-72, 79, 81, 87, 93-96, 116, 118, 119, 135, 138, 145, 157, 158, 169, 171, 172, 176-180, 184-186, 190-192, 196-198, 201-203.

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Created: Thu, 23 Jun 2011, 20:24:45 EST by Mr Bruce Thomson on behalf of Library - Information Access Service