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Data from: Quantifying physiological influences on otolith microchemistry

Data from: Quantifying physiological influences on otolith microchemistry
Data from: Quantifying physiological influences on otolith microchemistry
1. Trace element concentrations in fish earstones (“otoliths”) are widely used to discriminate spatially discrete populations or individuals of marine fish, based on a commonly held assumption that physiological influences on otolith composition are minor, and thus variations in otolith elemental chemistry primarily reflect changes in ambient water chemistry. 2. We carried out a long-term (1-yr) experiment, serially sampling seawater, blood plasma and otoliths of mature and immature European plaice (Pleuronectes platessa L.) to test relationships between otolith chemistry and environmental or physiological variables. 3. Seasonal variations in otolith elemental composition did not track seawater concentrations, but instead reflected physiological controls on metal transport and biokinetics, which are likely moderated by ambient temperature. The influence of physiological factors on otolith composition was particularly evident in Sr/Ca ratios, the most widely used elemental marker in applied otolith microchemistry studies. Reproduction also triggered specific variations in otolith and blood plasma metal chemistry, especially Zn/Ca ratios in female fish, which could potentially serve as retrospective spawning indicators. 4. The influence of physiology on the trace metal composition of otoliths may explain the success of microchemical stock discrimination in relatively chemically homogenous marine environments, but could complicate alternative uses for trace element compositions in biominerals of higher organisms.,Time series elemental and physiological data for experimental plaice serially sampled for 7-12 monthsPlaice were serially sampled for 7-12 months under ambient but monitored conditions. Each fish was sampled approximately monthly. Measurements in the attached data file include physiological variables (e.g. plasma protein concentrations, age, weight, length, female gonadosomatic index), otolith growth rates and opacity, and blood plasma and otolith elemental concentrations. Environmental data (salinity, temperature and seawater elemental concentrations) are also displayed. Note that elemental concentrations and element/calcium ratios are denoted as X.El and X.El.Ca for concentrations of element (‘El’) in medium ‘X’, where ‘X’ is either seawater (SW), blood plasma (B) or otolith (O).OTODATA_for_Dryad.xlsx,
DRYAD
Sturrock, Anna M.
04021e78-02e6-4db0-80e8-5b11e3e11652
Hunter, Ewan
75352862-16aa-44ee-aa31-ff56bf2305ea
Milton, J. Andrew
e4f5f469-66f4-4207-8631-f32d6af5a0bc
Johnson, Rachel C.
ef8105e2-0224-4b9a-ab24-c1e3ae8fcb63
Waring, Colin P.
77a4fb00-267a-4b2f-abb8-715fa15cabba
Trueman, Clive N.
d00d3bd6-a47b-4d47-89ae-841c3d506205
Sturrock, Anna M.
04021e78-02e6-4db0-80e8-5b11e3e11652
Hunter, Ewan
75352862-16aa-44ee-aa31-ff56bf2305ea
Milton, J. Andrew
e4f5f469-66f4-4207-8631-f32d6af5a0bc
Johnson, Rachel C.
ef8105e2-0224-4b9a-ab24-c1e3ae8fcb63
Waring, Colin P.
77a4fb00-267a-4b2f-abb8-715fa15cabba
Trueman, Clive N.
d00d3bd6-a47b-4d47-89ae-841c3d506205

Hunter, Ewan, Milton, J. Andrew, Johnson, Rachel C. and Waring, Colin P. (2016) Data from: Quantifying physiological influences on otolith microchemistry. DRYAD doi:10.5061/dryad.qk835 [Dataset]

Record type: Dataset

Abstract

1. Trace element concentrations in fish earstones (“otoliths”) are widely used to discriminate spatially discrete populations or individuals of marine fish, based on a commonly held assumption that physiological influences on otolith composition are minor, and thus variations in otolith elemental chemistry primarily reflect changes in ambient water chemistry. 2. We carried out a long-term (1-yr) experiment, serially sampling seawater, blood plasma and otoliths of mature and immature European plaice (Pleuronectes platessa L.) to test relationships between otolith chemistry and environmental or physiological variables. 3. Seasonal variations in otolith elemental composition did not track seawater concentrations, but instead reflected physiological controls on metal transport and biokinetics, which are likely moderated by ambient temperature. The influence of physiological factors on otolith composition was particularly evident in Sr/Ca ratios, the most widely used elemental marker in applied otolith microchemistry studies. Reproduction also triggered specific variations in otolith and blood plasma metal chemistry, especially Zn/Ca ratios in female fish, which could potentially serve as retrospective spawning indicators. 4. The influence of physiology on the trace metal composition of otoliths may explain the success of microchemical stock discrimination in relatively chemically homogenous marine environments, but could complicate alternative uses for trace element compositions in biominerals of higher organisms.,Time series elemental and physiological data for experimental plaice serially sampled for 7-12 monthsPlaice were serially sampled for 7-12 months under ambient but monitored conditions. Each fish was sampled approximately monthly. Measurements in the attached data file include physiological variables (e.g. plasma protein concentrations, age, weight, length, female gonadosomatic index), otolith growth rates and opacity, and blood plasma and otolith elemental concentrations. Environmental data (salinity, temperature and seawater elemental concentrations) are also displayed. Note that elemental concentrations and element/calcium ratios are denoted as X.El and X.El.Ca for concentrations of element (‘El’) in medium ‘X’, where ‘X’ is either seawater (SW), blood plasma (B) or otolith (O).OTODATA_for_Dryad.xlsx,

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Published date: 1 January 2016

Identifiers

Local EPrints ID: 449255
URI: http://eprints.soton.ac.uk/id/eprint/449255
PURE UUID: b4837ee0-23ce-4ecf-83fa-67021d603905

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Date deposited: 20 May 2021 16:33
Last modified: 20 May 2021 16:35

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Contributors

Contributor: Anna M. Sturrock
Creator: Ewan Hunter
Creator: J. Andrew Milton
Creator: Rachel C. Johnson
Creator: Colin P. Waring
Contributor: Clive N. Trueman

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