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Is anti-predator behaviour in Tasmanian eastern quolls (Dasyurus viverrinus) effective against introduced predators?

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Jones, ME and Smith, GC and Jones, SM (2004) Is anti-predator behaviour in Tasmanian eastern quolls (Dasyurus viverrinus) effective against introduced predators? Animal Conservation, 7 (2). pp. 155-160. ISSN 1367-9430

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Abstract

Exotic predators, particularly red foxes (Vulpes vulpes) and feral cats (Felis catus), have been implicated in
the declines and extinctions of many Australian mammals and a recent incursion of foxes into Tasmania has
therefore caused great concern. We tested the behavioural responses of eastern quolls (Dasyurus viverrinus)
to acoustic cues of native (masked owl (Tyto novaehollandiae castanops) and Tasmanian devil (Sarcophilus
laniarius)) and non-native (fox and cat) predators and to non-predators (cow (Bos taurus) and control noise).
Juvenile quolls treated fox vocalisations like those of cows (as measured by an increase in movement), in
contrast to their responses (a decrease in movement) to sympatric predators. Cats are probably a lesser threat
to eastern quolls than native predators or foxes, their impact probably being greatest on the juveniles. Juvenile
quolls, but not adults, showed similar responses to cat vocalisations as they did to owls and devils. Adult quolls
responded differently from juveniles to owls and devils, by increasing vigilance. This is consistent with the
smaller body size, inexperience and the presumed greater vulnerability of juveniles to predation. The lack of
appropriate anti-predator responses to foxes suggests that eastern quolls would be vulnerable to predation by
foxes in Tasmania.

Item Type: Article
Journal or Publication Title: Animal Conservation
Page Range: pp. 155-160
ISSN: 1367-9430
Identification Number - DOI: 10.1017/S136794300400126X
Additional Information:

The original publication is available at
http://www.interscience.wiley.com/

Animal Conservation 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Date Deposited: 21 Jul 2008 04:15
Last Modified: 18 Nov 2014 03:46
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