Differences in demographic traits of four butterflyfish species between two reefs of the Great Barrier Reef separated by 1,200 km


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dc.contributor.author Berumen, Michael L.
dc.contributor.author Trip, E. D.
dc.contributor.author Pratchett, Morgan S.
dc.contributor.author Choat, J. Howard
dc.date.accessioned 2012-06-05T20:17:03Z
dc.date.available 2012-11-15T09:41:50Z
dc.date.issued 2011-10
dc.identifier.uri http://hdl.handle.net/1912/5214
dc.description Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Coral Reefs 31 (2012): 169-177, doi:10.1007/s00338-011-0838-z. en_US
dc.description.abstract Many species demonstrate variation in life history attributes in response to gradients in environmental conditions. For fishes, major drivers of life history variation are changes in temperature and food availability. This study examined large-scale variation in the demography of four species of butterflyfishes (Chaetodon citrinellus, C. lunulatus, C. melannotus, and C. trifascialis) between two locations on Australia’s Great Barrier Reef (Lizard Island and One Tree Island, separated by approximately 1200km). Variation in age-based demographic parameters was assessed using the re-parameterised von Bertalanffy growth function. All species displayed measurable differences in body size between locations, with individuals achieving a larger adult size at the higher latitude site (One Tree Island) for three of the four species examined. Resources and abundances of the study species were also measured, revealing some significant differences between locations. For example, for C. trifascialis, there was no difference in its preferred resource or in abundance between locations, yet it achieved a larger body size at the higher latitude location, suggesting a response to temperature. For some species, resources and abundances did vary between locations, limiting the ability to distinguish between a demographic response to temperature as opposed to a response to food or competition. Future studies of life histories and demographics at large spatial scales will need to consider the potentially confounding roles of temperature, resource usage and availability, and abundance / competition in order to disentangle the effects of these environmental variables. en_US
dc.description.sponsorship This work was supported by a National Science Foundation (USA) Graduate Research Fellowship (MLB) and by PADI Project A.W.A.R.E. (MLB). en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.relation.uri http://dx.doi.org/10.1007/s00338-011-0838-z
dc.subject Chaetodontidae en_US
dc.subject Coral cover en_US
dc.subject Growth en_US
dc.subject Life history en_US
dc.subject Latitude en_US
dc.title Differences in demographic traits of four butterflyfish species between two reefs of the Great Barrier Reef separated by 1,200 km en_US
dc.type Preprint en_US
dc.description.embargo 2012-11-15 en_US

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