Habitat preferences of Port Jackson sharks, Heterodontus portusjacksoni, in the coastal waters of Eastern Australia

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dc.contributor.author Powter, DM
dc.contributor.author Gladstone, W
dc.date.accessioned 2012-02-02T07:16:41Z
dc.date.issued 2008-03
dc.identifier.citation Proceedings of the Linnean Society of New South Wales, 2008, 129 pp. 151 - 165
dc.identifier.issn 0370-047X
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/14860
dc.description.abstract The habitat preferences of juvenile and adult Heterodontus portusjacksoni and ovipositing females were determined from three locations on the central and southern coast of New South Wales. Adults use shallow coastal rocky reefs in July-November for mating and oviposition, whilst juveniles occupy a seagrass nursery in a large coastal embayment. The sand/reef interface on the lee side of reefs was preferred by both sexes, probably as a refuge against strong water movements. Adult females also preferred rocky gutters when available, possibly as a male avoidance strategy. Preferred oviposition sites were narrow, shallow crevices (single capsules) or deep, narrow crevices (multiple capsules) which afforded protection against mechanical dislocation and/or predation. Juveniles exhibited a strong preference for the seagrass bed edge within a shallow nursery area. The visual complexity of this habitat combined with the juvenile's disruptive colouration may provide a refuge from predation, whilst proximity to the seagrass may provide ease of access for foraging. At a large scale, juveniles preferred areas of moderate slope within the nursery that provided protection from strong water movement. This study highlights the need for quantitative studies addressing habitat preferences and a consideration of use-specific factors to fully understand the selection of habitat by elasmobranchs.
dc.language eng
dc.title Habitat preferences of Port Jackson sharks, Heterodontus portusjacksoni, in the coastal waters of Eastern Australia
dc.type Journal Article
dc.parent Proceedings of the Linnean Society of New South Wales
dc.journal.volume 129
dc.journal.number en_US
dc.publocation Australia en_US
dc.identifier.startpage 151 en_US
dc.identifier.endpage 165 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 0608 Zoology
dc.personcode 108858
dc.percentage 100 en_US
dc.classification.name Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Elasmobranchs
dc.description.keywords Elasmobranchs
dc.description.keywords Habitat preferences
dc.description.keywords Habitat preferences
dc.description.keywords Habitat use
dc.description.keywords Habitat use
dc.description.keywords Nursery area
dc.description.keywords Nursery area
dc.description.keywords Oviposition
dc.description.keywords Oviposition
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
pubs.consider-herdc false
utslib.collection.history School of the Environment (ID: 344)
utslib.collection.history Closed (ID: 3)


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