‘Stick with your own kind, or hang with the locals?’ Implications of shoaling strategy for tropical reef fish on a range-expansion frontline

Smith, SM; Fox, RJ; Booth, DJ; Donelson, JM

‘Stick with your own kind, or hang with the locals?’ Implications of shoaling strategy for tropical reef fish on a range-expansion frontline

Smith, SM

Fox, RJ

Booth, DJ

Donelson, JM

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Publication Type:: Journal Article
Citation:: Global Change Biology, 2018, 24 (4), pp. 1663 - 1672
Issue Date:: 2018-04-01

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Field	Value	Language
dc.contributor.author	Smith, SM https://orcid.org/0000-0003-1583-2785	en_US
dc.contributor.author	Fox, RJ https://orcid.org/0000-0003-3442-4189	en_US
dc.contributor.author	Booth, DJ https://orcid.org/0000-0002-8256-1412	en_US
dc.contributor.author	Donelson, JM https://orcid.org/0000-0002-0039-5300	en_US
dc.date.available	2017-11-06	en_US
dc.date.issued	2018-04-01	en_US
dc.identifier.citation	Global Change Biology, 2018, 24 (4), pp. 1663 - 1672	en_US
dc.identifier.issn	1354-1013	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128026
dc.description.abstract	© 2018 John Wiley & Sons Ltd Range shifts of tropical marine species to temperate latitudes are predicted to increase as a consequence of climate change. To date, the research focus on climate-mediated range shifts has been predominately dealt with the physiological capacity of tropical species to cope with the thermal challenges imposed by temperate latitudes. Behavioural traits of individuals in the novel temperate environment have not previously been investigated, however, they are also likely to play a key role in determining the establishment success of individual species at the range-expansion forefront. The aim of this study was to investigate the effect of shoaling strategy on the performance of juvenile tropical reef fishes that recruit annually to temperate waters off the south east coast of Australia. Specifically, we compared body-size distributions and the seasonal decline in abundance through time of juvenile tropical fishes that shoaled with native temperate species (‘mixed’ shoals) to those that shoaled only with conspecifics (as would be the case in their tropical range). We found that shoaling with temperate native species benefitted juvenile tropical reef fishes, with individuals in ‘mixed’ shoals attaining larger body-sizes over the season than those in ‘tropical-only’ shoals. This benefit in terms of population body-size distributions was accompanied by greater social cohesion of ‘mixed’ shoals across the season. Our results highlight the impact that sociality and behavioural plasticity are likely to play in determining the impact on native fish communities of climate-induced range expansion of coral reef fishes.	en_US
dc.relation.ispartof	Global Change Biology	en_US
dc.relation.isbasedon	10.1111/gcb.14016	en_US
dc.subject.classification	Ecology	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Fishes	en_US
dc.subject.mesh	Behavior, Animal	en_US
dc.subject.mesh	Tropical Climate	en_US
dc.subject.mesh	Australia	en_US
dc.subject.mesh	Climate Change	en_US
dc.subject.mesh	Coral Reefs	en_US
dc.subject.mesh	Animal Distribution	en_US
dc.title	‘Stick with your own kind, or hang with the locals?’ Implications of shoaling strategy for tropical reef fish on a range-expansion frontline	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	24	en_US
utslib.for	0602 Ecology	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	en_US
pubs.embargo.period	Not known	en_US
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 Life Sciences
utslib.copyright.status	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	24	en_US

Abstract:

© 2018 John Wiley & Sons Ltd Range shifts of tropical marine species to temperate latitudes are predicted to increase as a consequence of climate change. To date, the research focus on climate-mediated range shifts has been predominately dealt with the physiological capacity of tropical species to cope with the thermal challenges imposed by temperate latitudes. Behavioural traits of individuals in the novel temperate environment have not previously been investigated, however, they are also likely to play a key role in determining the establishment success of individual species at the range-expansion forefront. The aim of this study was to investigate the effect of shoaling strategy on the performance of juvenile tropical reef fishes that recruit annually to temperate waters off the south east coast of Australia. Specifically, we compared body-size distributions and the seasonal decline in abundance through time of juvenile tropical fishes that shoaled with native temperate species (‘mixed’ shoals) to those that shoaled only with conspecifics (as would be the case in their tropical range). We found that shoaling with temperate native species benefitted juvenile tropical reef fishes, with individuals in ‘mixed’ shoals attaining larger body-sizes over the season than those in ‘tropical-only’ shoals. This benefit in terms of population body-size distributions was accompanied by greater social cohesion of ‘mixed’ shoals across the season. Our results highlight the impact that sociality and behavioural plasticity are likely to play in determining the impact on native fish communities of climate-induced range expansion of coral reef fishes.

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http://hdl.handle.net/10453/128026