Reproductive ecology of the northern brown bandicoot (Isoodon macrourus) in habitat fragments of urban Brisbane

FitzGibbon, Sean I. (2015) Reproductive ecology of the northern brown bandicoot (Isoodon macrourus) in habitat fragments of urban Brisbane. Australian Mammalogy, 37 2: 253-259. doi:10.1071/AM14032


Author FitzGibbon, Sean I.
Title Reproductive ecology of the northern brown bandicoot (Isoodon macrourus) in habitat fragments of urban Brisbane
Journal name Australian Mammalogy   Check publisher's open access policy
ISSN 1836-7402
0310-0049
Publication date 2015-07-31
Year available 2015
Sub-type Article (original research)
DOI 10.1071/AM14032
Open Access Status Not Open Access
Volume 37
Issue 2
Start page 253
End page 259
Total pages 7
Place of publication Clayton, Victoria, Australia
Publisher CSIRO Publishing
Collection year 2016
Language eng
Formatted abstract
The reproductive ecology of wildlife can have an enormous impact on their ability to survive within heavily modified landscapes, such as urbanised environments. This paper examines the reproductive ecology of northern brown bandicoots (Isoodon macrourus) in small bush fragments within urban Brisbane, where much of the diverse original mammal fauna has become locally extinct. During the 33-month study, 46 independent female bandicoots were captured and 45 litters were examined from 27 mature females. Reproduction was found to be seasonal with most mature females carrying young during late winter, spring and summer; the proportion of breeding females diminished during autumn and there appeared to be a short period of non-breeding each year around late autumn and/or early winter. There was no significant association between breeding and rainfall. Litter size reduction during pouch young development was observed in numerous females, with the mean number of young falling from 3.7 early in lactation to 1.9 late in lactation (40+ days). Survivorship of young during pouch development was estimated to be between 51% and 75%. Annual fecundity of females was estimated at 4.7 litters per year, resulting in an estimated mean of 11–13 weaned young per female. The study highlights the considerable reproductive capacity and flexible annual breeding pattern of northern brown bandicoots. In combination with their generalist habitat and dietary requirements, these reproductive traits are considered important life-history characteristics that have facilitated the species’ survival in bush fragments of Brisbane’s urban landscape.
Keyword Conservation
Habitat modification
Marsupial
Peramelidae
population dynamics
reproductive strategy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2016 Collection
 
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