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

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dc.contributor.author Powter, David en_US
dc.contributor.author Gladstone, William en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-02-02T07:16:41Z
dc.date.available 2012-02-02T07:16:41Z
dc.date.issued 2008 en_US
dc.identifier 2009002281 en_US
dc.identifier.citation Powter David and Gladstone William 2008, 'Habitat preferences of Port Jackson Sharks, Heterodontus portusjacksoni, in the coastal waters of Eastern Australia', Linnean Society of New South Wales, vol. 129, pp. 151-165. en_US
dc.identifier.issn 0370-047X en_US
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 en_US
dc.language en_US
dc.publisher Linnean Society of New South Wales en_US
dc.title Habitat preferences of Port Jackson Sharks, Heterodontus portusjacksoni, in the coastal waters of Eastern Australia en_US
dc.parent Proceedings Of The Linnean Society Of New South Wales en_US
dc.journal.volume 129 en_US
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 060800 en_US
dc.personcode 0000059479 en_US
dc.personcode 108858 en_US
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; habitat use; habitat preferences; nursery area; oviposition en_US
dc.staffid en_US
dc.staffid 108858 en_US


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