{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T19:19:39Z","timestamp":1785266379914,"version":"3.55.0"},"reference-count":24,"publisher":"Cambridge University Press (CUP)","issue":"7","license":[{"start":{"date-parts":[[2024,9,25]],"date-time":"2024-09-25T00:00:00Z","timestamp":1727222400000},"content-version":"unspecified","delay-in-days":116,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Stranded seals are often infected with a broad range of parasites, although whether they are the cause of significant morbidity or an incidental finding is usually unclear. In this study we used stable isotope ratio analysis, a method frequently used to investigate food webs, to explore the extent to which common seal parasites feed directly on host tissue and fluids or absorb host-derived metabolites, which in turn may give an indication of their potential impact on the host's health. The trophic discrimination factor \u0394<jats:sup>15<\/jats:sup>N for the nasal mite, <jats:italic>Halarachne halichoeri<\/jats:italic>, was mostly positive, ranging between \u22120.015 and 3.2\u2030 (<jats:italic>n<\/jats:italic> = 6), while for the Acanthocephalan worm, <jats:italic>Corynosoma strumosum<\/jats:italic> and the anisakid nematode, <jats:italic>Pseudoterranova decipiens<\/jats:italic>, \u0394<jats:sup>15<\/jats:sup>N ranged between \u22124.2 and \u22122.0\u2030 (<jats:italic>n<\/jats:italic> = 7), and between \u22126.7 and \u22120.8\u2030 (<jats:italic>n<\/jats:italic> = 5) respectively. In the case of the lungworm, <jats:italic>Otostrongylus circumlitus<\/jats:italic>, \u0394<jats:sup>15<\/jats:sup>N measured between \u22125.6 and 0\u2030 for worms collected in the stomach (<jats:italic>n<\/jats:italic> = 5), between \u22121.1 and 0.2\u2030 for worms collected from the heart (<jats:italic>n<\/jats:italic> = 3), between \u22120.7 and 1.9\u2030 for worms situated in the lungs (<jats:italic>n<\/jats:italic> = 4). Based on \u0394<jats:sup>15<\/jats:sup>N, parasites could be clearly divided into those that were on a higher trophic level than their host suggesting a predator\u2013prey-like relationship, and those that were not. It is hypothesized that \u0394<jats:sup>15<\/jats:sup>N may be indicative of the clinical significance of parasite\u2013host associations.<\/jats:p>","DOI":"10.1017\/s003118202400074x","type":"journal-article","created":{"date-parts":[[2024,9,25]],"date-time":"2024-09-25T15:08:25Z","timestamp":1727276905000},"page":"744-752","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":1,"title":["Use of stable isotope ratio analysis to investigate the biology and clinical significance of seal parasites"],"prefix":"10.1017","volume":"151","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5600-579X","authenticated-orcid":false,"given":"Annetta","family":"Zintl","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2565-8314","authenticated-orcid":false,"given":"Michelle","family":"Imlau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacklyn","family":"Schertzer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Han","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Audrey","family":"Saint-Marc","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Olaf","family":"Schmidt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oscar","family":"Toomey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanne","family":"Jahns","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2024,9,25]]},"reference":[{"key":"S003118202400074X_ref2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcpa.2019.10.009"},{"key":"S003118202400074X_ref10","doi-asserted-by":"publisher","DOI":"10.1111\/mve.12372"},{"key":"S003118202400074X_ref17","doi-asserted-by":"publisher","DOI":"10.1890\/0012-9658(2002)083[0703:USITET]2.0.CO;2"},{"key":"S003118202400074X_ref18","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-373553-9.00193-0"},{"key":"S003118202400074X_ref23","doi-asserted-by":"publisher","DOI":"10.1111\/oik.06086"},{"key":"S003118202400074X_ref1","doi-asserted-by":"publisher","DOI":"10.1016\/j.vetpar.2011.08.002"},{"key":"S003118202400074X_ref6","doi-asserted-by":"publisher","DOI":"10.1139\/F10-119"},{"key":"S003118202400074X_ref24","doi-asserted-by":"publisher","DOI":"10.1016\/j.ympev.2007.03.019"},{"key":"S003118202400074X_ref8","doi-asserted-by":"publisher","DOI":"10.1093\/nar\/21.10.2525"},{"key":"S003118202400074X_ref7","doi-asserted-by":"publisher","DOI":"10.7589\/0090-3558-18.1.63"},{"key":"S003118202400074X_ref5","doi-asserted-by":"publisher","DOI":"10.3920\/978-90-8686-274-0"},{"key":"S003118202400074X_ref22","first-page":"599","volume-title":"Veterinary 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\u00a9 The Author(s), 2024. Published by Cambridge University Press","name":"copyright","label":"Copyright","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http:\/\/creativecommons.org\/licenses\/by\/4.0\/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.","name":"license","label":"License","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This content has been made available to all.","name":"free","label":"Free to read"}]}}