Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability

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Show simple item record Gladstone, W 2012-02-02T08:35:11Z 2007-12-06
dc.identifier.citation Marine Ecology Progress Series, 2007, 351 pp. 235 - 247
dc.identifier.issn 0171-8630
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract Spawning aggregations form when fishes migrate to a site from their normal feeding grounds and form temporary groupings for breeding. Spawning aggregation sites are spatially rare, and demonstrating differences between a spawning aggregation site and unselected sites nearby is the first step towards understanding the benefits provided by the aggregation site. Chromis hypsilepis (Pomacentridae) is a demersally spawning reef fish, one population of which reproduces in a large, single aggregation at a rocky reef off the central coast of New South Wales, Australia. This study compared the habitat structure (rugosity, reef slope, substratum particle size, and abundance of preferred spawning microhabitat) of the spawning aggregation site and several non-spawning sites, and tested the hypotheses that the spawning aggregation site provided greater off-reef larval transport and prey availability for brooding males. Substratum rugosity was significantly greater and the preferred spawning microhabitat was significantly more abundant at the spawning aggregation site. Reef relief and substratum particle size were not significantly different from non-spawning sites. Passively drifting surface current drogues released at the spawning aggregation site were more rapidly transported off the reef, but did not travel further or faster, than drogues released at a non-spawning site over a 12 h period. Biomass of the preferred prey (copepods of 0.441 to 1.49 mm equivalent spherical diameter) was not significantly greater, but was less variable, at the spawning aggregation site. © Inter-Research 2007.
dc.language eng
dc.relation.isbasedon 10.3354/meps07108
dc.title Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability
dc.type Journal Article
dc.parent Marine Ecology Progress Series
dc.journal.volume 351
dc.journal.number en_US
dc.publocation Germany en_US
dc.identifier.startpage 235 en_US
dc.identifier.endpage 247 en_US SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 0602 Ecology
dc.personcode 108858
dc.percentage 100 en_US Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Habitat preference
dc.description.keywords Larval dispersal
dc.description.keywords Reef fish reproduction
dc.description.keywords Spawning aggregation
dc.description.keywords Spawning site selection
dc.description.keywords Temperate reef fish
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/Faculty of Science/School of the Environment
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Open Access 2015-04-15 12:23:47.074767+10
pubs.consider-herdc false

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