Behavioural generalism could facilitate co-existence of tropical and temperate fishes under climate change.

Coni, EOC; Booth, DJ; Ferreira, CM; Nagelkerken, I

Behavioural generalism could facilitate co-existence of tropical and temperate fishes under climate change.

Coni, EOC Booth, DJ Ferreira, CM Nagelkerken, I

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: The Journal of animal ecology, 2021
Issue Date:: 2021-10-04

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Field	Value	Language
dc.contributor.author	Coni, EOC
dc.contributor.author	Booth, DJ
dc.contributor.author	Ferreira, CM
dc.contributor.author	Nagelkerken, I
dc.date.accessioned	2021-10-12T01:15:02Z
dc.date.available	2021-10-12T01:15:02Z
dc.date.issued	2021-10-04
dc.identifier.citation	The Journal of animal ecology, 2021
dc.identifier.issn	0021-8790
dc.identifier.issn	1365-2656
dc.identifier.uri	http://hdl.handle.net/10453/151044
dc.description.abstract	Coral-reef fishes are shifting their distributions poleward in response to human-mediated ocean warming, yet the consequences for recipient temperate fish communities remain poorly understood. Behavioural modification is often the first response of species to environmental change, but we know little about how this might shape the ongoing colonisation by tropical fishes of temperate-latitude ecosystems under climate change. In a global hotspot of ocean warming (southeast Australia), we quantified 14 behavioural traits of invading tropical and local co-occurring temperate fishes at 10 sites across a 730 km latitudinal gradient as a proxy of species behavioural niche space in different climate ranges (subtropical, warm-temperate, cold-temperate). We found that tropical fishes (4 species) modified their behavioural niches as well as increased their overall behavioural niche breadth in their novel temperate ranges where temperate species predominate, but maintained a moderate to high niche segregation with native temperate species across latitudinal range position. Temperate species (3 co-occurring species) also modified their niches, but in contrast to tropical species, experienced an increased niche breadth towards subtropical ranges. Alterations to feeding and shoaling behaviours contributed most to niche modifications in tropical and temperate species, while behaviours related to alertness and escape from potential threats contributed least. We here show that at warmer and colder range edges where community structures are being reshuffled due to climate change, behavioural generalism and niche modification are potential mechanisms adopted by tropical range extenders and native-temperate fishes to adjust to novel species interactions under climate change.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Wiley
dc.relation	http://purl.org/au-research/grants/arc/DP170101722
dc.relation.ispartof	The Journal of animal ecology
dc.relation.isbasedon	10.1111/1365-2656.13599
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	05 Environmental Sciences, 06 Biological Sciences, 07 Agricultural and Veterinary Sciences
dc.subject.classification	Ecology
dc.title	Behavioural generalism could facilitate co-existence of tropical and temperate fishes under climate change.
dc.type	Journal Article
utslib.location.activity	England
utslib.for	05 Environmental Sciences
utslib.for	06 Biological Sciences
utslib.for	07 Agricultural and Veterinary Sciences
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	open_access	*
utslib.copyright.embargo	2022-10-04T00:00:00+1000Z
dc.date.updated	2021-10-12T01:15:00Z
pubs.publication-status	Published

Abstract:

Coral-reef fishes are shifting their distributions poleward in response to human-mediated ocean warming, yet the consequences for recipient temperate fish communities remain poorly understood. Behavioural modification is often the first response of species to environmental change, but we know little about how this might shape the ongoing colonisation by tropical fishes of temperate-latitude ecosystems under climate change. In a global hotspot of ocean warming (southeast Australia), we quantified 14 behavioural traits of invading tropical and local co-occurring temperate fishes at 10 sites across a 730 km latitudinal gradient as a proxy of species behavioural niche space in different climate ranges (subtropical, warm-temperate, cold-temperate). We found that tropical fishes (4 species) modified their behavioural niches as well as increased their overall behavioural niche breadth in their novel temperate ranges where temperate species predominate, but maintained a moderate to high niche segregation with native temperate species across latitudinal range position. Temperate species (3 co-occurring species) also modified their niches, but in contrast to tropical species, experienced an increased niche breadth towards subtropical ranges. Alterations to feeding and shoaling behaviours contributed most to niche modifications in tropical and temperate species, while behaviours related to alertness and escape from potential threats contributed least. We here show that at warmer and colder range edges where community structures are being reshuffled due to climate change, behavioural generalism and niche modification are potential mechanisms adopted by tropical range extenders and native-temperate fishes to adjust to novel species interactions under climate change.

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http://hdl.handle.net/10453/151044