Assimilation of nitrogen and carbon isotopes from fish diets to otoliths as measured by nanoscale secondary ion mass spectrometry

Shiao, Jen‐Chieh; Shirai, Kotaro; Tanaka, Kentaro; Takahata, Naoto; Sano, Yuji; Hsiao, Shih-Hsin; Lee, Der Chuen; Tseng, Yung‐Che

doi:10.1002/rcm.8171

Cited by 11 publications

(4 citation statements)

References 34 publications

(72 reference statements)

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“…A recent study using the addition method suggested that otolith nitrogen isotopes were directly assimilated from food on the day that it was fed to the fish . The results of this study further suggest that the otolith organic matrix was derived from the food ingested by fish, with little, if any, nitrogen isotope fractionation.…”

Section: Discussionsupporting

confidence: 62%

Fractionation of otolith nitrogen stable isotopes measured by peroxodisulfate oxidation‐bacterial conversion and isotope ratio mass spectrometry

Cheng

Shiao

Hsiao

et al. 2018

Rapid Comm Mass Spectrometry

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These results suggest that diet was the main source of amino acids for the otolith organic matrix and there was no biochemical transamination during the assimilation of dietary amino acids to otoliths. The δ N value can be used as a proxy of nitrogen sources of fishes and may have potential application in ecological studies such as the detection of diet shift, migration, trophic levels and environmental changes experienced by the fish population.

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Section: Discussionsupporting

confidence: 62%

Fractionation of otolith nitrogen stable isotopes measured by peroxodisulfate oxidation‐bacterial conversion and isotope ratio mass spectrometry

Cheng

Shiao

Hsiao

et al. 2018

Rapid Comm Mass Spectrometry

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“…We recommend further future work that should include a compilation of published research on movements of predators and their diets from stomach contents and other techniques, to provide greater insights into the role predation plays in the accumulation of otoliths into sediments. For example, to investigate the degree to which trophic physiological relationships changed from the mid-Holocene to today using carbon and nitrogen isotopes from otoliths [97–99].…”

Section: Discussionmentioning

confidence: 99%

Reconstructing reef fish communities using fish otoliths in coral reef sediments

et al. 2019

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Little is known about long-term changes in coral reef fish communities. Here we present a new technique that leverages fish otoliths in reef sediments to reconstruct coral reef fish communities. We found over 5,400 otoliths in 169 modern and mid-Holocene bulk samples from Caribbean Panama and Dominican Republic mid-Holocene and modern reefs, demonstrating otoliths are abundant in reef sediments. With a specially-built reference collection, we were able to assign over 4,400 otoliths to one of 56 taxa (35 families) though mostly at genus and family level. Many otoliths were from juvenile fishes for which identification is challenging. Richness (by rarefaction) of otolith assemblages was slightly higher in modern than mid-Holocene reefs, but further analyses are required to elucidate the underlying causes. We compared the living fish communities, sampled using icthyocide, with the sediment otolith assemblages on four reefs finding the otolith assemblages faithfully capture the general composition of the living fish communities. Radiocarbon dating performed directly on the otoliths suggests that relatively little mixing of sediment layers particularly on actively accreting branching coral reefs. All otolith assemblages were strongly dominated by small, fast-turnover fish taxa and juvenile individuals, and our exploration on taxonomy, functional ecology and taphonomy lead us to the conclusion that intense predation is likely the most important process for otolith accumulation in reef sediments. We conclude that otolith assemblages in modern and fossil reef sediments can provide a powerful tool to explore ecological changes in reef fish communities over time and space.

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“…Controlled laboratory experiments demonstrate stable isotopes of otolith organics are effective tracers of diet (e.g., Grønkjaer et al 2013;Lueders-Dumont et al 2020, with dietary tracing ability of otoliths immune to temperature effects (Godiksen et al 2019). Overall, otolith proteins rapidly incorporate N from diet (Shiao et al 2018) and in timescales similar to liver, the tissue with the shortest turnover time (Lueders-Dumont et al 2022). However, life history stage must be considered, especially for young fish, which may have smaller trophic discrimination factors, including for otoliths (Lueders-Dumont et al 2022).…”

Section: Groundtruthing Stable Isotope Composition Of Otolith Protein...mentioning

confidence: 99%

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Patrick

Gillanders

Sturrock

et al. 2022

Rev Fish Biol Fisheries

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Chemical analysis of calcified structures continues to flourish, as analytical and technological advances enable researchers to tap into trace elements and isotopes taken up in otoliths and other archival tissues at ever greater resolution. Increasingly, these tracers are applied to refine age estimation and interpretation, and to chronicle responses to environmental stressors, linking these to ecological, physiological, and life-history processes. Here, we review emerging approaches and innovative research directions in otolith chemistry, as well as in the chemistry of other archival tissues, outlining their value for fisheries and ecosystem-based management, turning the spotlight on areas where such biomarkers can support decision making. We summarise recent milestones and the challenges that lie ahead to using otoliths and archival tissues as biomarkers, grouped into seven, rapidly expanding and application-oriented research areas that apply chemical analysis in a variety of contexts, namely: (1) supporting fish age estimation; (2) evaluating environmental stress, ecophysiology and individual performance; (3) confirming seafood provenance; (4) resolving connectivity and movement pathways; (5) characterising food webs and trophic interactions; (6) reconstructing reproductive life histories; and (7) tracing stock enhancement efforts. Emerging research directions that apply hard part chemistry to combat seafood fraud, quantify past food webs, as well as to reconcile growth, movement, thermal, metabolic, stress and reproductive life-histories provide opportunities to examine how harvesting and global change impact fish health and fisheries productivity. Ultimately, improved appreciation of the many practical benefits of archival tissue chemistry to fisheries and ecosystem-based management will support their increased implementation into routine monitoring. Graphical abstract

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Assimilation of nitrogen and carbon isotopes from fish diets to otoliths as measured by nanoscale secondary ion mass spectrometry

Cited by 11 publications

References 34 publications

Fractionation of otolith nitrogen stable isotopes measured by peroxodisulfate oxidation‐bacterial conversion and isotope ratio mass spectrometry

Fractionation of otolith nitrogen stable isotopes measured by peroxodisulfate oxidation‐bacterial conversion and isotope ratio mass spectrometry

Reconstructing reef fish communities using fish otoliths in coral reef sediments

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

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