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Seven helminth species were found in<jats:italic>L. lutra<\/jats:italic>in southwest Europe:<jats:italic>Phagicola<\/jats:italic>sp. (Trematoda),<jats:italic>Aonchotheca putorii<\/jats:italic>,<jats:italic>Eucoleus schvalovoj<\/jats:italic>,<jats:italic>Strongyloides lutrae<\/jats:italic>,<jats:italic>Anisakis<\/jats:italic>(third stage larvae) and<jats:italic>Dirofilaria immitis<\/jats:italic>(Nematoda), and<jats:italic>Gigantorhynchus<\/jats:italic>sp. (Acanthocephala).<jats:italic>Eucoleus schvalovoj<\/jats:italic>was the dominant species throughout southwest Europe.<jats:italic>Strongyloides lutrae<\/jats:italic>was significantly more prevalent in the Iberian Peninsula than in France. Apart from these two dominant nematodes and<jats:italic>A. putorii<\/jats:italic>, the other helminth species were incidental parasites of<jats:italic>L. lutra<\/jats:italic>in southwest Europe. The helminth fauna of<jats:italic>L. lutra<\/jats:italic>in southwest Europe is, in general, poorer than that reported in eastern Europe and in all other aquatic mustelids in southwest Europe.<jats:italic>Phagicola<\/jats:italic>specimens are reported for the first time in a non-marine wild carnivore in Europe. The prevalences of<jats:italic>E. schvalovoj<\/jats:italic>and<jats:italic>S. lutrae<\/jats:italic>obtained by necropsy were higher than those observed by coprological analysis using a formalin-ether concentration method (Ritchie). Nevertheless, the culture of fresh faeces appears to be the best method to study infection of<jats:italic>L. lutra<\/jats:italic>by<jats:italic>Strongyloides<\/jats:italic>.<\/jats:p>","DOI":"10.1079\/joh2004253","type":"journal-article","created":{"date-parts":[[2004,12,1]],"date-time":"2004-12-01T23:41:04Z","timestamp":1101944464000},"page":"353-359","source":"Crossref","is-referenced-by-count":31,"title":["Helminth parasites of the Eurasian otter<i>Lutra lutra<\/i>in southwest Europe"],"prefix":"10.1017","volume":"78","author":[{"given":"J.","family":"Torres","sequence":"first","affiliation":[]},{"given":"C.","family":"Feliu","sequence":"additional","affiliation":[]},{"given":"J.","family":"Fern\u00e1ndez-Mor\u00e1n","sequence":"additional","affiliation":[]},{"given":"J.","family":"Ru\u00edz-Olmo","sequence":"additional","affiliation":[]},{"given":"R.","family":"Rosoux","sequence":"additional","affiliation":[]},{"given":"M.","family":"Santos-Reis","sequence":"additional","affiliation":[]},{"given":"J.","family":"Miquel","sequence":"additional","affiliation":[]},{"given":"R.","family":"Fons","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2024,4,12]]},"reference":[{"key":"S0022149X00703270_ref050","volume-title":"La nutria en Espa\u00f1a ante el horizonte del a\u00f1o 2000","author":"Ru\u00edz-Olmo","year":"1998"},{"key":"S0022149X00703270_ref025","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7998.1990.tb04003.x"},{"key":"S0022149X00703270_ref005","first-page":"179","article-title":"Helminths parasitizing the otter (Lutra lutra L.) in the Czech Republic","volume":"37","author":"Barus","year":"2000","journal-title":"Helminthologia"},{"key":"S0022149X00703270_ref063","doi-asserted-by":"publisher","DOI":"10.1023\/A:1006453532286"},{"key":"S0022149X00703270_ref061","first-page":"55","article-title":"Helminthological investigation of Mustela nivalis Linnaeus, 1766 in Spain. 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