Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish
Chronological records of elemental concentrations in fish otoliths are a widely used tool to infer the environmental conditions experienced by individual fish. To interpret elemental signals within the otolith, it is important to understand how both external and internal factors impact ion uptake, t...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-03-01
|
| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1365023/full |
| _version_ | 1797258667256446976 |
|---|---|
| author | Karin Hüssy Stefanie Haase Monica Mion Annelie Hilvarsson Krzysztof Radtke Tonny B. Thomsen Maria Krüger-Johnsen Michele Casini Michele Casini Anna M. Sturrock |
| author_facet | Karin Hüssy Stefanie Haase Monica Mion Annelie Hilvarsson Krzysztof Radtke Tonny B. Thomsen Maria Krüger-Johnsen Michele Casini Michele Casini Anna M. Sturrock |
| author_sort | Karin Hüssy |
| collection | DOAJ |
| description | Chronological records of elemental concentrations in fish otoliths are a widely used tool to infer the environmental conditions experienced by individual fish. To interpret elemental signals within the otolith, it is important to understand how both external and internal factors impact ion uptake, transport and incorporation. In this study, we have combined chronological records from otoliths and archival data storage tags to quantify the influence of internal (sex, size, age, growth) and external (temperature, depth, salinity) conditions on otolith elemental chemistry of cod (Gadus morhua) in natural settings of the Baltic Sea. This study focused on elements primarily under physiological control: Phosphorus (P), magnesium (Mg) and zinc (Zn); and elements under environmental control: Strontium (Sr), barium (Ba) and manganese (Mn). Based on known spatial and temporal patterns in environmental conditions and fish size, growth, and maturity, we posed a series of hypotheses of expected otolith element patterns. Partial effects of internal and external drivers on element concentration were analyzed using a Linear Mixed Model approach with random variables (fish and year). Predicted effects of otolith concentrations of all elements under physiological control (P, Mg, Zn) showed similar trends, with distinct seasonal patterns (lowest concentration in late spring, highest concentrations in winter), and a positive correlation with water temperature, in addition to higher Zn and lower P in spawning individuals. Predicted effects of otolith concentrations of elements expected to be predominantly under environmental control showed the predicted geographic and depth-related trends based on ambient salinity (Ba) and coastal hypoxia (Mn). However, contrary to expectation, Sr was unrelated to salinity. Predicted otolith Ba, Sr and Mn concentrations also exhibited pronounced seasonal patterns that were out of phase with each other but appeared to be partly explained by spawning/feeding migrations. While performing laboratory validation studies for adult fish is typically not possible, these results highlight the importance of assessing local water chemistry and freshwater endmembers in one’s study system before otolith elemental chemistry can be reliably used to reconstruct fish habitat use and environmental histories. |
| first_indexed | 2024-04-24T22:57:10Z |
| format | Article |
| id | doaj.art-8324452d4af14b6bbe1bdd1d34638170 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-24T22:57:10Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-8324452d4af14b6bbe1bdd1d346381702024-03-18T04:36:03ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-03-011110.3389/fmars.2024.13650231365023Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fishKarin Hüssy0Stefanie Haase1Monica Mion2Annelie Hilvarsson3Krzysztof Radtke4Tonny B. Thomsen5Maria Krüger-Johnsen6Michele Casini7Michele Casini8Anna M. Sturrock9National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, DenmarkThünen Institute of Baltic Sea Fisheries, Rostock, GermanyDepartment of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, Lysekil, SwedenDepartment of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, Lysekil, SwedenNational Marine Fisheries Research Institute, Gdynia, PolandGeological Survey of Denmark and Greenland, Copenhagen, DenmarkNational Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, DenmarkDepartment of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, Lysekil, SwedenDepartment of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, ItalySchool of Life Sciences, University of Essex, Colchester, United KingdomChronological records of elemental concentrations in fish otoliths are a widely used tool to infer the environmental conditions experienced by individual fish. To interpret elemental signals within the otolith, it is important to understand how both external and internal factors impact ion uptake, transport and incorporation. In this study, we have combined chronological records from otoliths and archival data storage tags to quantify the influence of internal (sex, size, age, growth) and external (temperature, depth, salinity) conditions on otolith elemental chemistry of cod (Gadus morhua) in natural settings of the Baltic Sea. This study focused on elements primarily under physiological control: Phosphorus (P), magnesium (Mg) and zinc (Zn); and elements under environmental control: Strontium (Sr), barium (Ba) and manganese (Mn). Based on known spatial and temporal patterns in environmental conditions and fish size, growth, and maturity, we posed a series of hypotheses of expected otolith element patterns. Partial effects of internal and external drivers on element concentration were analyzed using a Linear Mixed Model approach with random variables (fish and year). Predicted effects of otolith concentrations of all elements under physiological control (P, Mg, Zn) showed similar trends, with distinct seasonal patterns (lowest concentration in late spring, highest concentrations in winter), and a positive correlation with water temperature, in addition to higher Zn and lower P in spawning individuals. Predicted effects of otolith concentrations of elements expected to be predominantly under environmental control showed the predicted geographic and depth-related trends based on ambient salinity (Ba) and coastal hypoxia (Mn). However, contrary to expectation, Sr was unrelated to salinity. Predicted otolith Ba, Sr and Mn concentrations also exhibited pronounced seasonal patterns that were out of phase with each other but appeared to be partly explained by spawning/feeding migrations. While performing laboratory validation studies for adult fish is typically not possible, these results highlight the importance of assessing local water chemistry and freshwater endmembers in one’s study system before otolith elemental chemistry can be reliably used to reconstruct fish habitat use and environmental histories.https://www.frontiersin.org/articles/10.3389/fmars.2024.1365023/fulldata storage tagshabitatphysiologyhypoxiaotolith chemistrysalinity |
| spellingShingle | Karin Hüssy Stefanie Haase Monica Mion Annelie Hilvarsson Krzysztof Radtke Tonny B. Thomsen Maria Krüger-Johnsen Michele Casini Michele Casini Anna M. Sturrock Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish Frontiers in Marine Science data storage tags habitat physiology hypoxia otolith chemistry salinity |
| title | Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| title_full | Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| title_fullStr | Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| title_full_unstemmed | Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| title_short | Into the wild: coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| title_sort | into the wild coupling otolith and archival tag records to test assumptions underpinning otolith chemistry applications in wild fish |
| topic | data storage tags habitat physiology hypoxia otolith chemistry salinity |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1365023/full |
| work_keys_str_mv | AT karinhussy intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT stefaniehaase intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT monicamion intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT anneliehilvarsson intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT krzysztofradtke intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT tonnybthomsen intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT mariakrugerjohnsen intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT michelecasini intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT michelecasini intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish AT annamsturrock intothewildcouplingotolithandarchivaltagrecordstotestassumptionsunderpinningotolithchemistryapplicationsinwildfish |