CORRECTION: Compound-specific isotope analysis of amino acids reveals dependency on grazing rather than detritivory in mangrove food webs

2022 ◽  
Vol 681 ◽  
Author(s):  
Y Harada ◽  
SY Lee ◽  
RM Connolly ◽  
B Fry
Keyword(s):  
Amino Acids ◽  
Food Webs ◽  
Isotope Analysis ◽  
Compound Specific Isotope Analysis

scholarly journals Trophic hierarchy of coastal marine fish communities viewed via compound-specific isotope analysis of amino acids

2020 ◽  
Vol 652 ◽  
pp. 137-144
Author(s):  
D Xing ◽  
B Choi ◽  
Y Takizawa ◽  
R Fan ◽  
S Sugaya ◽  
...  
Keyword(s):  
Amino Acids ◽  
Food Webs ◽  
Isotope Analysis ◽  
Individual Species ◽  
Migratory Species ◽  
Sagami Bay ◽  
Compound Specific Isotope Analysis ◽  
Coastal Marine ◽  
Coastal Species ◽  
Isotopic Baseline

Coastal marine ecosystems are very complex and composed of myriad organisms, including offshore, coastal, and migratory fish occupying diverse trophic positions (TPs) in food webs. The illustration of trophic hierarchy based on the TP and resource utilization of individual organisms remains challenging. In this study, we applied compound-specific isotope analysis of amino acids to estimate the TP and isotopic baseline (i.e. δ15N values of primary resources at the base of food webs) for 13 fish and 1 squid species in a coastal area of Sagami Bay, Japan, where a large diversity in the isotopic baseline is caused by an admixture of ocean currents and artificial nitrogen inputs. Our results indicate that the TP of fish and squid varies between 2.9 and 3.9 (i.e. omnivorous, carnivorous, and tertiary consumers), with low variation within individual species. Moreover, the δ15N values of phenylalanine revealed the diversity of isotopic baselines between and within species. Low values (7.8-10.3‰) and high values (18.6-19.2‰), with a small variation (1σ < 1.0‰), were found in 2 offshore species and 3 coastal species, respectively. In contrast, highly variable values (9.8-19.7‰), with large variation within species (1σ > 1.0‰), were found for the remaining 9 migratory species. These results represent evidence of differential trophic exploitation of habitats between offshore and coastal species, particularly among individuals of migratory species, that were all collected in a single area of Sagami Bay.

Compound‐specific isotope analysis of amino acids as a new tool to uncover trophic chains in soil food webs

2019 ◽  
Vol 89 (4) ◽  
Author(s):  
Melanie M. Pollierer ◽  
Thomas Larsen ◽  
Anton Potapov ◽  
Adrian Brückner ◽  
Michael Heethoff ◽  
...  
Keyword(s):  
Amino Acids ◽  
Food Webs ◽  
Isotope Analysis ◽  
Soil Food Webs ◽  
Compound Specific Isotope Analysis ◽  
Trophic Chains

scholarly journals Stable nitrogen isotope analysis of amino acids as a new tool to clarify complex parasite–host interactions within food webs

Oikos ◽  
2021 ◽  
Author(s):  
Philip M. Riekenberg ◽  
Tijs Joling ◽  
Lonneke L. IJsseldijk ◽  
Andreas M. Waser ◽  
Marcel T. J. van der Meer ◽  
...  
Keyword(s):  
Amino Acids ◽  
Food Webs ◽  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Stable Nitrogen Isotope ◽  
Host Interactions ◽  
Nitrogen Isotope Analysis

Compound-specific isotope analysis of amino acids: A tool to unravel complex symbiotic trophic relationships

Food Webs ◽  
2016 ◽  
Vol 6 ◽  
pp. 9-18 ◽  
Author(s):  
A.J.M. Sabadel ◽  
E.M.S. Woodward ◽  
R. Van Hale ◽  
R.D. Frew
Keyword(s):  
Amino Acids ◽  
Isotope Analysis ◽  
Trophic Relationships ◽  
Compound Specific Isotope Analysis

scholarly journals Compound‐specific isotope analysis of benthic foraminifer amino acids suggests microhabitat variability in rocky‐shore environments

2018 ◽  
Vol 8 (16) ◽  
pp. 8380-8395 ◽  
Author(s):  
Masashi Tsuchiya ◽  
Yoshito Chikaraishi ◽  
Hidetaka Nomaki ◽  
Yoko Sasaki ◽  
Akihiro Tame ◽  
...  
Keyword(s):  
Amino Acids ◽  
Rocky Shore ◽  
Isotope Analysis ◽  
Benthic Foraminifer ◽  
Compound Specific Isotope Analysis

scholarly journals Stable nitrogen isotope analysis of amino acids as a new tool to clarify complex parasite-host interactions within marine food webs

2021 ◽  
Author(s):  
Philip Riekenberg ◽  
Tijs Joling ◽  
Lonneke L. IJsseldijk ◽  
Andreas M. Waser ◽  
Marcel van der Meer ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Trophic Interactions ◽  
Trophic Position ◽  
Isotope Analysis ◽  
Isotopic Analysis ◽  
Parasitic Interactions

AbstractTraditional bulk isotopic analysis is a pivotal tool for mapping consumer-resource interactions in food webs but has largely failed to adequately describe parasite-host relationships. Thus, parasite-host interactions remain largely understudied in food web frameworks despite these relationships increasing linkage density, connectance, and ecosystem biomass. Compound-specific stable isotopes from amino acids provides a promising novel approach that may aid in mapping parasitic interactions in food webs. However, to date it has not been applied to parasitic trophic interactions.Here we use a combination of traditional bulk stable isotope analyses and compound-specific isotopic analysis of the nitrogen in amino acids to examine resource use and trophic interactions of five parasites from three hosts from a marine coastal food web (Wadden Sea, European Atlantic). By comparing isotopic compositions of bulk and amino acid nitrogen, we aimed to characterize isotopic fractionation occurring between parasites and their hosts and to clarify the trophic position of the parasites.Our results showed that parasitic trophic interactions were more accurately identified when using compound-specific stable isotope analysis due to removal of underlying source isotopic variation for both parasites and hosts, and avoidance of the averaging of amino acid variability in bulk analyses through use of multiple trophic amino acids. The compound-specific method provided clear trophic discrimination factors in comparison to bulk isotope methods, however, those differences varied significantly among parasite species.Amino acid compound specific isotope analysis has widely been applied to examine trophic position within food webs, but our analyses suggest that the method is particularly useful for clarifying the feeding strategies for parasitic species. Baseline isotopic information provided by source amino acids allows clear identification of the fractionation occurring due to parasite metabolism by integrating underlying isotopic variations from the host tissues. However, like for bulk isotope analysis, the application of a universal trophic discrimination factor to parasite-host relationships remains inappropriate for compound-specific stable isotope analysis. Despite this limitation, compound-specific stable isotope analysis is and will continue to be a valuable tool to increase our understanding of parasitic interactions in marine food webs.

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