{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,25]],"date-time":"2025-11-25T05:03:48Z","timestamp":1764047028687,"version":"3.40.5"},"reference-count":48,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2021,12,15]],"date-time":"2021-12-15T00:00:00Z","timestamp":1639526400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001509","name":"Royal Society Te Ap\u0101rangi","doi-asserted-by":"publisher","award":["19\u2010UOO\u2010212"],"award-info":[{"award-number":["19\u2010UOO\u2010212"]}],"id":[{"id":"10.13039\/501100001509","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["besjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Animal Ecology"],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:list><jats:list-item><jats:p>Stable isotopes have been sporadically used over the last two decades to characterise host\u2013parasite trophic relationships. The main reason for this scarcity is the lack of an obvious pattern in the ratio of nitrogen stable isotope values (<jats:italic>\u03b4<\/jats:italic><jats:sup>15<\/jats:sup>N) of parasites in comparison to their host tissues, which would be key to understand any host\u2013parasite system dynamics.<\/jats:p><\/jats:list-item><jats:list-item><jats:p>To circumvent this, we focused on a single snail host,<jats:italic>Zeacumantus subcarinatus<\/jats:italic>, and three of its trematode parasites.<\/jats:p><\/jats:list-item><jats:list-item><jats:p>We used stable isotopes to investigate each host\u2010trematode trophic relationship and shed light on the mechanisms utilised by the parasite to reroute its hosts' biomass.<\/jats:p><\/jats:list-item><jats:list-item><jats:p>All our trematodes were found to be<jats:sup>15<\/jats:sup>N\u2010enriched compared to their host, with their<jats:italic>\u03b4<\/jats:italic><jats:sup>15<\/jats:sup>N values strongly related to their feeding behaviours: passive versus active. It was possible to \u2018rank\u2019 these parasite species and assess their \u2018relative\u2019 trophic position using<jats:italic>\u03b4<\/jats:italic><jats:sup>15<\/jats:sup>N values. We also demonstrated that including a broader range of samples (e.g. host food and faeces, multiple parasite life stages) helped understand the metabolic mechanisms used by the various participants, and that using carbon stable isotope values and C:N ratios allowed to identify an important lipid requirement of these trematode parasites. Finally, we show how critical it is to not ignore parasitic infections as they can have a great influence on their host's trophic position.<\/jats:p><\/jats:list-item><jats:list-item><jats:p>We have shown that by focussing on a single host species and a single taxonomic group of parasites, we can remove a certain amount of variation recorded by broader isotope studies. We hope that these data will ultimately improve our ability to place parasites in food webs, and thus improve our understanding of the connections and interactions that dictate food web dynamics.<\/jats:p><\/jats:list-item><\/jats:list><\/jats:p>","DOI":"10.1111\/1365-2656.13644","type":"journal-article","created":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T16:23:58Z","timestamp":1638548638000},"page":"484-495","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Stable isotopes unravel the feeding mode\u2013trophic position relationship in trematode parasites"],"prefix":"10.1111","volume":"91","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1080-8842","authenticated-orcid":false,"given":"Amandine J. 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