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dc.contributor.authorEbner, Brendan
dc.contributor.authorBroadhurst, Ben
dc.contributor.authorLintermans, Mark
dc.contributor.authorJekabsons, Mark
dc.contributor.editorKatrin Berkenbusch
dc.date.accessioned2017-05-03T15:32:54Z
dc.date.available2017-05-03T15:32:54Z
dc.date.issued2007
dc.date.modified2010-02-09T05:28:02Z
dc.identifier.issn00288330
dc.identifier.urihttp://hdl.handle.net/10072/28682
dc.description.abstractTo investigate possible predation on a remnant population of the endangered Macquaria australasica in Cotter Reservoir, ACT, Australia, stomach content analysis was conducted on 63 rainbow trout Oncorhynchus mykiss and 24 brown trout Salmo trutta. Both predators were found to be piscivorous, with the frequency of piscivory generally increasing with body size. Goldfish Carassius auratus were the only fish species identified in stomach contents. That gape-limitation prevented trout from feeding on juvenile M. australasica was eliminated as a possibility based on: (1) the body depth of prey and the mouth-size of predators; and (2) evidence that another species of similar dimensions was ingested by trout. Whether or not trout predation on M. australasica is an important process in Cotter Reservoir remains to be clarified. Juvenile M. austalasica do not reside in the parts of the reservoir from which most trout were actually sampled in the current study. Therefore, it is proposed that the lack of evidence for predation on M. australasica is potentially a false-negative result.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherThe royal society of New Zealand
dc.publisher.placeNew Zealand
dc.publisher.urihttp://www.royalsociety.org.nz
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom231
dc.relation.ispartofpageto237
dc.relation.ispartofissue2
dc.relation.ispartofjournalNew Zealand Journal of Marine and Freshwater Research
dc.relation.ispartofvolume41
dc.rights.retentionY
dc.subject.fieldofresearchFreshwater Ecology
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchBiological Sciences
dc.subject.fieldofresearchcode060204
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode06
dc.titleA possible false negative: lack of evidence for trout predation on a remnant population of the endangered Macquarie perch, Macquaria australasica, in Cotter Reservoir, Australia
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2007
gro.hasfulltextNo Full Text
gro.griffith.authorEbner, Brendan C.


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