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DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish
Dietary studies are critical for understanding foraging strategies and have important applications in conservation and habitat management. We applied a robust metabarcoding protocol to characterize the diet of the critically endangered freshwater fish Zingel asper (the Rhone streber). We conducted m...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9828795/ https://www.ncbi.nlm.nih.gov/pubmed/36125278 http://dx.doi.org/10.1111/mec.16698 |
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author | Villsen, Kurt Corse, Emmanuel Meglécz, Emese Archambaud‐Suard, Gaït Vignes, Hélène Ereskovsky, Alexander V. Chappaz, Rémi Dubut, Vincent |
author_facet | Villsen, Kurt Corse, Emmanuel Meglécz, Emese Archambaud‐Suard, Gaït Vignes, Hélène Ereskovsky, Alexander V. Chappaz, Rémi Dubut, Vincent |
author_sort | Villsen, Kurt |
collection | PubMed |
description | Dietary studies are critical for understanding foraging strategies and have important applications in conservation and habitat management. We applied a robust metabarcoding protocol to characterize the diet of the critically endangered freshwater fish Zingel asper (the Rhone streber). We conducted modelling and simulation analyses to identify and characterize some of the drivers of individual trophic trait variation in this species. We found that population density and ontogeny had minor effects on the trophic niche of Z. asper. Instead, our results suggest that the majority of trophic niche variation was driven by seasonal variation in ecological opportunity. The total trophic niche width of Z. asper seasonally expanded to include a broader range of prey. Furthermore, null model simulations revealed that the increase of between‐individual variation in autumn indicates that Z. asper become more opportunistic relative to summer and spring, rather than being associated with a seasonal specialization of individuals. Overall, our results suggest an adaptive variation of individual trophic traits in Z. asper: the species mainly consumes a few ephemeropteran taxa (Baetis fuscatus and Ecdyonurus) but seems to be capable of adapting its foraging strategy to maintain its body condition. This study illustrates how metabarcoding data obtained from faeces can be validated and combined with individual‐based modelling and simulation approaches to explore inter‐ and intrapopulational individual trophic traits variation and to test hypotheses in the conventional analytic framework of trophic ecology. |
format | Online Article Text |
id | pubmed-9828795 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-98287952023-01-10 DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish Villsen, Kurt Corse, Emmanuel Meglécz, Emese Archambaud‐Suard, Gaït Vignes, Hélène Ereskovsky, Alexander V. Chappaz, Rémi Dubut, Vincent Mol Ecol ORIGINAL ARTICLES Dietary studies are critical for understanding foraging strategies and have important applications in conservation and habitat management. We applied a robust metabarcoding protocol to characterize the diet of the critically endangered freshwater fish Zingel asper (the Rhone streber). We conducted modelling and simulation analyses to identify and characterize some of the drivers of individual trophic trait variation in this species. We found that population density and ontogeny had minor effects on the trophic niche of Z. asper. Instead, our results suggest that the majority of trophic niche variation was driven by seasonal variation in ecological opportunity. The total trophic niche width of Z. asper seasonally expanded to include a broader range of prey. Furthermore, null model simulations revealed that the increase of between‐individual variation in autumn indicates that Z. asper become more opportunistic relative to summer and spring, rather than being associated with a seasonal specialization of individuals. Overall, our results suggest an adaptive variation of individual trophic traits in Z. asper: the species mainly consumes a few ephemeropteran taxa (Baetis fuscatus and Ecdyonurus) but seems to be capable of adapting its foraging strategy to maintain its body condition. This study illustrates how metabarcoding data obtained from faeces can be validated and combined with individual‐based modelling and simulation approaches to explore inter‐ and intrapopulational individual trophic traits variation and to test hypotheses in the conventional analytic framework of trophic ecology. John Wiley and Sons Inc. 2022-10-09 2022-11 /pmc/articles/PMC9828795/ /pubmed/36125278 http://dx.doi.org/10.1111/mec.16698 Text en © 2022 The Authors. Molecular Ecology published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | ORIGINAL ARTICLES Villsen, Kurt Corse, Emmanuel Meglécz, Emese Archambaud‐Suard, Gaït Vignes, Hélène Ereskovsky, Alexander V. Chappaz, Rémi Dubut, Vincent DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title |
DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title_full |
DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title_fullStr |
DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title_full_unstemmed |
DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title_short |
DNA metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
title_sort | dna metabarcoding suggests adaptive seasonal variation of individual trophic traits in a critically endangered fish |
topic | ORIGINAL ARTICLES |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9828795/ https://www.ncbi.nlm.nih.gov/pubmed/36125278 http://dx.doi.org/10.1111/mec.16698 |
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