Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses.
The δ(15)N values of organisms are commonly used across diverse ecosystems to estimate trophic position and infer trophic connectivity. We undertook a novel cross-basin comparison of trophic position in two ecologically well-characterized and different groups of dominant mid-water fish consumers usi...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23209656/?tool=EBI |
| _version_ | 1818574625836105728 |
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| author | C Anela Choy Peter C Davison Jeffrey C Drazen Adrian Flynn Elizabeth J Gier Joel C Hoffman Jennifer P McClain-Counts Todd W Miller Brian N Popp Steve W Ross Tracey T Sutton |
| author_facet | C Anela Choy Peter C Davison Jeffrey C Drazen Adrian Flynn Elizabeth J Gier Joel C Hoffman Jennifer P McClain-Counts Todd W Miller Brian N Popp Steve W Ross Tracey T Sutton |
| author_sort | C Anela Choy |
| collection | DOAJ |
| description | The δ(15)N values of organisms are commonly used across diverse ecosystems to estimate trophic position and infer trophic connectivity. We undertook a novel cross-basin comparison of trophic position in two ecologically well-characterized and different groups of dominant mid-water fish consumers using amino acid nitrogen isotope compositions. We found that trophic positions estimated from the δ(15)N values of individual amino acids are nearly uniform within both families of these fishes across five global regions despite great variability in bulk tissue δ(15)N values. Regional differences in the δ(15)N values of phenylalanine confirmed that bulk tissue δ(15)N values reflect region-specific water mass biogeochemistry controlling δ(15)N values at the base of the food web. Trophic positions calculated from amino acid isotopic analyses (AA-TP) for lanternfishes (family Myctophidae) (AA-TP ∼2.9) largely align with expectations from stomach content studies (TP ∼3.2), while AA-TPs for dragonfishes (family Stomiidae) (AA-TP ∼3.2) were lower than TPs derived from stomach content studies (TP∼4.1). We demonstrate that amino acid nitrogen isotope analysis can overcome shortcomings of bulk tissue isotope analysis across biogeochemically distinct systems to provide globally comparative information regarding marine food web structure. |
| first_indexed | 2024-12-15T00:29:02Z |
| format | Article |
| id | doaj.art-d615fed158924ba5a952561c0bdc104f |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-15T00:29:02Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-d615fed158924ba5a952561c0bdc104f2022-12-21T22:42:05ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-01711e5013310.1371/journal.pone.0050133Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses.C Anela ChoyPeter C DavisonJeffrey C DrazenAdrian FlynnElizabeth J GierJoel C HoffmanJennifer P McClain-CountsTodd W MillerBrian N PoppSteve W RossTracey T SuttonThe δ(15)N values of organisms are commonly used across diverse ecosystems to estimate trophic position and infer trophic connectivity. We undertook a novel cross-basin comparison of trophic position in two ecologically well-characterized and different groups of dominant mid-water fish consumers using amino acid nitrogen isotope compositions. We found that trophic positions estimated from the δ(15)N values of individual amino acids are nearly uniform within both families of these fishes across five global regions despite great variability in bulk tissue δ(15)N values. Regional differences in the δ(15)N values of phenylalanine confirmed that bulk tissue δ(15)N values reflect region-specific water mass biogeochemistry controlling δ(15)N values at the base of the food web. Trophic positions calculated from amino acid isotopic analyses (AA-TP) for lanternfishes (family Myctophidae) (AA-TP ∼2.9) largely align with expectations from stomach content studies (TP ∼3.2), while AA-TPs for dragonfishes (family Stomiidae) (AA-TP ∼3.2) were lower than TPs derived from stomach content studies (TP∼4.1). We demonstrate that amino acid nitrogen isotope analysis can overcome shortcomings of bulk tissue isotope analysis across biogeochemically distinct systems to provide globally comparative information regarding marine food web structure.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23209656/?tool=EBI |
| spellingShingle | C Anela Choy Peter C Davison Jeffrey C Drazen Adrian Flynn Elizabeth J Gier Joel C Hoffman Jennifer P McClain-Counts Todd W Miller Brian N Popp Steve W Ross Tracey T Sutton Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. PLoS ONE |
| title | Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. |
| title_full | Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. |
| title_fullStr | Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. |
| title_full_unstemmed | Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. |
| title_short | Global trophic position comparison of two dominant mesopelagic fish families (Myctophidae, Stomiidae) using amino acid nitrogen isotopic analyses. |
| title_sort | global trophic position comparison of two dominant mesopelagic fish families myctophidae stomiidae using amino acid nitrogen isotopic analyses |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23209656/?tool=EBI |
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