{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:38:57Z","timestamp":1786977537333,"version":"build-2736575974"},"reference-count":53,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T00:00:00Z","timestamp":1760572800000},"content-version":"vor","delay-in-days":15,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002428","name":"Austrian Science Fund","doi-asserted-by":"publisher","award":["[10.55776\/P35515]"],"award-info":[{"award-number":["[10.55776\/P35515]"]}],"id":[{"id":"10.13039\/501100002428","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ecology and Evolution"],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Laboratory experiments have demonstrated that dietary intake of omega\u20103 long\u2010chain polyunsaturated fatty acids (n\u20103 LC\u2010PUFA) is beneficial for survival, reproduction and brain development in many vertebrates including fishes, positively affecting their cognitive abilities. However, how n\u20103 LC\u2010PUFA impact fish behaviour and cognition in natural habitats remains unclear. Populations and individuals of the same species often vary in their capacities to synthesise n\u20103 LC\u2010PUFA due to their local adaptations and life\u2010history trade\u2010offs. This may affect their sensitivity to dietary intake of these nutrients and, in turn, their cognitive traits and ecological performance. Here, we tested how dietary n\u20103 LC\u2010PUFA affects behavioural and cognitive traits of brown trout\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Salmo trutta<\/jats:italic>\n                    <\/jats:styled-content>\n                    from two lacustrine and three riverine populations. We combined laboratory behavioural tests with experiments in semi\u2010natural flume mesocosms to see how dietary treatment affects foraging behaviour in a natural environment (i.e., prey size and taxonomic composition in their stomach contents). Trout raised on a high n\u20103 LC\u2010PUFA diet showed less bold behavioural types and better cognitive performance in laboratory tests and capacity to capture and consume larger prey in the flume mesocosm. Additionally, we observed interpopulation differences in behaviour and cognition, although these differences were independent of whether fish were from lakes or river.\n                  <\/jats:p>","DOI":"10.1002\/ece3.72340","type":"journal-article","created":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T19:32:56Z","timestamp":1760643176000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Dietary Omega\u20103 Long\u2010Chain Polyunsaturated Fatty Acids Can Enhance Ecologically Relevant Cognitive Traits in Juvenile Brown Trout"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-2964-7843","authenticated-orcid":false,"given":"Stefano","family":"Mari","sequence":"first","affiliation":[{"name":"Department of Functional and Evolutionary Ecology University of Vienna  Vienna Austria"},{"name":"WasserCluster Lunz\u2014Biologische Station, Inter\u2010University Center for Aquatic Ecosystem Research Dr. Carl Kuperlwieser\u2010Promenade 5  Lunz Am See Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Auer","sequence":"additional","affiliation":[{"name":"Department of Water, Atmosphere and Environment, Institute of Hydrobiology and Aquatic Ecosystem Management University of Natural Resources and Life Sciences  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1779-2396","authenticated-orcid":false,"given":"Benedikte","family":"Austad","sequence":"additional","affiliation":[{"name":"Department of Biological &amp; Environmental Sciences University of Gothenburg  Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pernilla","family":"Hansson","sequence":"additional","affiliation":[{"name":"WasserCluster Lunz\u2014Biologische Station, Inter\u2010University Center for Aquatic Ecosystem Research Dr. Carl Kuperlwieser\u2010Promenade 5  Lunz Am See Austria"},{"name":"Department of Biological &amp; Environmental Sciences University of Gothenburg  Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon","family":"Vitecek","sequence":"additional","affiliation":[{"name":"WasserCluster Lunz\u2014Biologische Station, Inter\u2010University Center for Aquatic Ecosystem Research Dr. Carl Kuperlwieser\u2010Promenade 5  Lunz Am See Austria"},{"name":"Department of Water, Atmosphere and Environment, Institute of Hydrobiology and Aquatic Ecosystem Management University of Natural Resources and Life Sciences  Vienna Austria"},{"name":"Department of Ecology University of Innsbruck  Innsbruck Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5379-325X","authenticated-orcid":false,"given":"Mourine J.","family":"Yegon","sequence":"additional","affiliation":[{"name":"WasserCluster Lunz\u2014Biologische Station, Inter\u2010University Center for Aquatic 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