Growth impacts in a changing ocean: insights from two coral reef fishes in an extreme environment

D’Agostino, D; Burt, JA; Santinelli, V; Vaughan, GO; Fowler, AM; Reader, T; Taylor, BM; Hoey, AS; Cavalcante, GH; Bauman, AG; Feary, DA

Growth impacts in a changing ocean: insights from two coral reef fishes in an extreme environment

D’Agostino, D Burt, JA Santinelli, V Vaughan, GO Fowler, AM Reader, T Taylor, BM Hoey, AS Cavalcante, GH Bauman, AG Feary, DA

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Publisher:: Springer
Publication Type:: Journal Article
Citation:: Coral Reefs, 2021, 40, (2), pp. 433-446
Issue Date:: 2021-02-15

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Field	Value	Language
dc.contributor.author	D’Agostino, D
dc.contributor.author	Burt, JA
dc.contributor.author	Santinelli, V
dc.contributor.author	Vaughan, GO
dc.contributor.author	Fowler, AM
dc.contributor.author	Reader, T
dc.contributor.author	Taylor, BM
dc.contributor.author	Hoey, AS
dc.contributor.author	Cavalcante, GH
dc.contributor.author	Bauman, AG
dc.contributor.author	Feary, DA
dc.date.accessioned	2022-02-06T00:41:09Z
dc.date.available	2022-02-06T00:41:09Z
dc.date.issued	2021-02-15
dc.identifier.citation	Coral Reefs, 2021, 40, (2), pp. 433-446
dc.identifier.issn	0722-4028
dc.identifier.issn	1432-0975
dc.identifier.uri	http://hdl.handle.net/10453/154207
dc.description.abstract	Determining the life-history consequences for fishes living in extreme and variable environments will be vital in predicting the likely impacts of ongoing climate change on reef fish demography. Here, we compare size-at-age and maximum body size of two common reef fish species (Lutjanus ehrenbergii and Pomacanthus maculosus) between the environmentally extreme Arabian/Persian Gulf (‘Arabian Gulf’) and adjacent comparably benign Oman Sea. Additionally, we use otolith increment width profiles to investigate the influence of temperature, salinity and productivity on the individual growth rates. Individuals of both species showed smaller size-at-age and lower maximum size in the Arabian Gulf compared to conspecifics in the less extreme and less variable environment of the Oman Sea, suggesting a life-history trade-off between size and metabolic demands. Salinity was the best environmental predictor of interannual growth across species and regions, with low growth corresponding to more saline conditions. However, salinity had a weaker negative effect on interannual growth of fishes in the Arabian Gulf than in the Oman Sea, indicating Arabian Gulf populations may be better able to acclimate to changing environmental conditions. Temperature had a weak positive effect on the interannual growth of fishes in the Arabian Gulf, suggesting that these populations may still be living within their thermal windows. Our results highlight the potential importance of osmoregulatory cost in impacting growth, and the need to consider the effect of multiple stressors when investigating the consequences of future climate change on fish demography.
dc.language	en
dc.publisher	Springer
dc.relation.ispartof	Coral Reefs
dc.relation.isbasedon	10.1007/s00338-021-02061-6
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	04 Earth Sciences, 05 Environmental Sciences, 06 Biological Sciences
dc.subject.classification	Marine Biology & Hydrobiology
dc.title	Growth impacts in a changing ocean: insights from two coral reef fishes in an extreme environment
dc.type	Journal Article
utslib.citation.volume	40
utslib.for	04 Earth Sciences
utslib.for	05 Environmental Sciences
utslib.for	06 Biological 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	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-02-06T00:41:06Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	40
utslib.citation.issue	2

Abstract:

Determining the life-history consequences for fishes living in extreme and variable environments will be vital in predicting the likely impacts of ongoing climate change on reef fish demography. Here, we compare size-at-age and maximum body size of two common reef fish species (Lutjanus ehrenbergii and Pomacanthus maculosus) between the environmentally extreme Arabian/Persian Gulf (‘Arabian Gulf’) and adjacent comparably benign Oman Sea. Additionally, we use otolith increment width profiles to investigate the influence of temperature, salinity and productivity on the individual growth rates. Individuals of both species showed smaller size-at-age and lower maximum size in the Arabian Gulf compared to conspecifics in the less extreme and less variable environment of the Oman Sea, suggesting a life-history trade-off between size and metabolic demands. Salinity was the best environmental predictor of interannual growth across species and regions, with low growth corresponding to more saline conditions. However, salinity had a weaker negative effect on interannual growth of fishes in the Arabian Gulf than in the Oman Sea, indicating Arabian Gulf populations may be better able to acclimate to changing environmental conditions. Temperature had a weak positive effect on the interannual growth of fishes in the Arabian Gulf, suggesting that these populations may still be living within their thermal windows. Our results highlight the potential importance of osmoregulatory cost in impacting growth, and the need to consider the effect of multiple stressors when investigating the consequences of future climate change on fish demography.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/154207