Combined effects of extrinsic and intrinsic factors on otolith chemistry: Implications for environmental reconstructions

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dc.contributor.authorBarnes, T.
dc.contributor.authorGillanders, B.
dc.contributor.editorRose, K.
dc.date.issued2013
dc.description.abstractOtolith chemistry is widely used to understand patterns of fish movement and habitat use, with significant progress made in understanding the influence of environmental factors on otolith elemental uptake. However, few studies consider the interactive effect that environmental and genetic influences have on otolith chemistry. This study assessed the influence of salinity, temperature, and genetics on the incorporation of three key elements (strontium (Sr), barium (Ba), and magnesium (Mg)) into the otoliths of two discrete stocks of mulloway (Argyrosomus japonicus) fingerlings reared in captivity. Elemental analysis via laser ablation inductively coupled – plasma mass spectrometry found that stock (genetics) had a significant interactive effect on otolith Sr:Ca (salinity × temperature × stock) and Ba:Ca (salinity × stock), but did not affect Mg:Ca incorporation. Mg:Ca showed a positive relationship with temperature for both stocks. The incorporation of some elements into the otoliths of fish is the result of complex interactions between extrinsic and intrinsic factors. These findings highlight the necessity to also consider stock along with environmental variables when using trace elemental signatures to reconstruct the environmental histories of fish.
dc.description.statementofresponsibilityThomas C. Barnes, Bronwyn M. Gillanders
dc.identifier.citationCanadian Journal of Fisheries and Aquatic Sciences, 2013; 70(8):1159-1166
dc.identifier.doi10.1139/cjfas-2012-0442
dc.identifier.issn0706-652X
dc.identifier.issn1205-7533
dc.identifier.orcidGillanders, B. [0000-0002-7680-2240]
dc.identifier.urihttp://hdl.handle.net/2440/80015
dc.language.isoen
dc.publisherNatl Research Council Canada
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110100716
dc.relation.granthttp://purl.org/au-research/grants/arc/FT100100767
dc.rights© Authors
dc.source.urihttps://doi.org/10.1139/cjfas-2012-0442
dc.titleCombined effects of extrinsic and intrinsic factors on otolith chemistry: Implications for environmental reconstructions
dc.typeJournal article
pubs.publication-statusPublished

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