{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T03:05:14Z","timestamp":1776999914067,"version":"3.51.4"},"reference-count":91,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2023,6,17]],"date-time":"2023-06-17T00:00:00Z","timestamp":1686960000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Fish Diseases"],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Parasites negatively affect biological processes within their hosts, which may alter for example health, growth, and reproductive ability. Non\u2010native invasive parasites, in particular, may have large effects on the endemic hosts, given that the hosts lack evolved specific defences against such parasites. The swim bladder nematode<jats:italic>Anguillicola crassus<\/jats:italic>, an invasive parasite originating from Asia, is found in the European eel (<jats:italic>Anguilla anguilla<\/jats:italic>, L. 1758), since the 1980s. We investigated whether<jats:italic>A.\u2009crassus<\/jats:italic>affected several indicators related to health of the European eel (spleen\u2010 and liver size, body fat content and relative condition). Our results indicate that during the continental residency of the eels, infection by<jats:italic>A.\u2009crassus<\/jats:italic>had no major negative impacts on the investigated health indicators at the generally low infection intensities present in this study (median 2\u20133 visible parasites). Given that many of the adult eels were found to have swim bladder damage, concerns about their spawning migration through deeper oceanic environments can still be raised. To allow further investigations, we suggest that quantification of swim bladder damage should be implemented in eel\u2010monitoring programs. Compared to other parasite pressure parameters, swim bladder damage provides additional information about past infections and future problems.<\/jats:p>","DOI":"10.1111\/jfd.13822","type":"journal-article","created":{"date-parts":[[2023,6,17]],"date-time":"2023-06-17T17:10:26Z","timestamp":1687021826000},"page":"1029-1047","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Effects of the invasive swim bladder parasite<i>Anguillicola crassus<\/i>on health and condition indicators in the European eel"],"prefix":"10.1111","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3894-4501","authenticated-orcid":false,"given":"Elin","family":"Myren\u00e5s","sequence":"first","affiliation":[{"name":"Department of Aquatic Resources Institute of Freshwater Research Swedish University of Agricultural Sciences Drottningholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joacim","family":"N\u00e4slund","sequence":"additional","affiliation":[{"name":"Department of Aquatic Resources Institute of Freshwater Research Swedish University of Agricultural Sciences Drottningholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John","family":"Persson","sequence":"additional","affiliation":[{"name":"Department of Aquatic Resources Institute of Freshwater Research Swedish University of Agricultural Sciences Drottningholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1853-4046","authenticated-orcid":false,"given":"Josefin","family":"Sundin","sequence":"additional","affiliation":[{"name":"Department of Aquatic Resources Institute of Freshwater Research Swedish University of Agricultural Sciences Drottningholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,6,17]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1178120"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2000.1052"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1051\/kmae:1997033"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfd.12215"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfd.12596"},{"key":"e_1_2_11_7_1","first-page":"1","article-title":"Lipid and protein content in Anguilla anguilla during growth and starvation","volume":"4","author":"Bo\u00ebtius I.","year":"1985","journal-title":"Dana"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/ece3.5728"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfd.13301"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-008045405-4.00645-5"},{"key":"e_1_2_11_11_1","unstructured":"Briand C. &Legrand M.(2022).stacomiR: Fish migration monitoring. R\u2010package. CRAN:https:\/\/CRAN.R\u2010project.org\/package=stacomiRc"},{"key":"e_1_2_11_12_1","unstructured":"Calluna. (2022).Data: Recipientkontroll_RonneaRingsjon2022.xlsx.https:\/\/www.ringsjon.se\/wp\u2010content\/uploads\/2022\/06\/Recipientkontroll_RonneaRingsjon2022.xlsx"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.219808"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0300\u20109629(75)80059\u20104"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11160\u2010005\u20107431\u2010x"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao008077"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-4-431-65907-5_17"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u20102435.2012.02041.x"},{"key":"e_1_2_11_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.0022\u20101112.2005.00662.x"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/faf.12113"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.2022620118"},{"key":"e_1_2_11_22_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1817738116"},{"key":"e_1_2_11_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfd.12383"},{"key":"e_1_2_11_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439\u20100426.2006.00805.x"},{"key":"e_1_2_11_25_1","doi-asserted-by":"publisher","DOI":"10.1111\/faf.12113"},{"key":"e_1_2_11_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ecss.2020.107117"},{"key":"e_1_2_11_27_1","volume-title":"Parasitology: An integrated approach","author":"Gunn A.","year":"2022"},{"key":"e_1_2_11_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/0044\u20108486(90)90267\u2010Q"},{"key":"e_1_2_11_29_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00436\u2010019\u201006399\u20103"},{"key":"e_1_2_11_30_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2007.0934"},{"key":"e_1_2_11_31_1","doi-asserted-by":"publisher","DOI":"10.17895\/ices.pub.8143"},{"key":"e_1_2_11_32_1","doi-asserted-by":"publisher","DOI":"10.2307\/3282174"},{"key":"e_1_2_11_33_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u20102400.2003.00355.x"},{"key":"e_1_2_11_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fishres.2013.03.010"},{"key":"e_1_2_11_35_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182004005864"},{"key":"e_1_2_11_36_1","first-page":"275","article-title":"Studies on the nematode parasitic on the air bladder of eel. I. Description of Anguillicola crassa n. sp. (Philometridae, Anguillicolidae)","volume":"23","author":"Kuwahara A.","year":"1974","journal-title":"Japanese Journal of Parasitology"},{"key":"e_1_2_11_37_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1461\u20100248.2008.01174.x"},{"key":"e_1_2_11_38_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev\u2010marine\u2010010814\u2010015646"},{"key":"e_1_2_11_39_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00436\u2010007\u20100546\u20103"},{"key":"e_1_2_11_40_1","unstructured":"L\u00e4nnergren C.(2022).Unders\u00f6kningar i \u00d6stra M\u00e4laren fram till och med 2021 22MB1061 Stockholm Vatten och Avfall.https:\/\/www.stockholmvattenochavfall.se\/globalassets\/pdfer\/rapporter\/sjo\u2010och\u2010vattenvard\/malaren\/undersokningar\u2010i\u2010ostra\u2010malaren\u20102021.pdf"},{"key":"e_1_2_11_41_1","doi-asserted-by":"publisher","DOI":"10.2307\/1540"},{"key":"e_1_2_11_42_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182001001378"},{"key":"e_1_2_11_43_1","doi-asserted-by":"publisher","DOI":"10.2478\/s11686\u2010007\u20100013\u20104"},{"key":"e_1_2_11_44_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u20102761.2010.01207.x"},{"key":"e_1_2_11_45_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2012.2916"},{"key":"e_1_2_11_46_1","doi-asserted-by":"publisher","DOI":"10.3391\/ai.2012.7.4.001"},{"key":"e_1_2_11_47_1","unstructured":"Lenth R. V.(2022).Emmeans: Estimated marginal means aka least\u2010squares means. CRAN.https:\/\/CRAN.R\u2010project.org\/package=emmeans"},{"key":"e_1_2_11_48_1","doi-asserted-by":"publisher","DOI":"10.1093\/icesjms\/fsaa213"},{"key":"e_1_2_11_49_1","first-page":"349","article-title":"Effects of decreased oxygen content on eels (Anguilla anguilla) infected by Anguillicola crassus (Nematoda: Dracunculoidea)","volume":"41","author":"Moln\u00e1r K.","year":"1993","journal-title":"Acta Veterinaria Hungarica"},{"key":"e_1_2_11_50_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao015041"},{"key":"e_1_2_11_51_1","doi-asserted-by":"publisher","DOI":"10.1139\/z00-076"},{"key":"e_1_2_11_52_1","first-page":"247","article-title":"Spreading of the nematode Anguillicola crassus (Dracunculoidea) among eel populations in Europe","volume":"39","author":"Moravec F.","year":"1992","journal-title":"Folia Parasitologica"},{"key":"e_1_2_11_53_1","volume-title":"Dracunculoid and anguillicoloid nematodes parasitic in vertebrates","author":"Moravec F.","year":"2006"},{"key":"e_1_2_11_54_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-374553-8.00286-0"},{"key":"e_1_2_11_55_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095\u20108312.2007.00743.x"},{"key":"e_1_2_11_56_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0169\u20105347(98)01580\u20108"},{"key":"e_1_2_11_57_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jembe.2007.08.003"},{"key":"e_1_2_11_58_1","doi-asserted-by":"publisher","DOI":"10.1139\/cjfas\u20102020\u20100432"},{"key":"e_1_2_11_59_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2014.00486"},{"key":"e_1_2_11_60_1","unstructured":"Pike C. Crook V. &Gollock M.(2020).Anguilla anguilla. The IUCN red list of threatened species 2020: E.T60344A152845178.https:\/\/doi.org\/10.2305\/IUCN.UK.2020\u20102.RLTS.T60344A152845178.en"},{"key":"e_1_2_11_61_1","doi-asserted-by":"publisher","DOI":"10.1139\/cjfas\u20102018\u20100032"},{"key":"e_1_2_11_62_1","doi-asserted-by":"publisher","DOI":"10.1086\/393500"},{"key":"e_1_2_11_63_1","volume-title":"R: A language and environment for statistical computing","author":"R Core Team","year":"2021"},{"key":"e_1_2_11_64_1","first-page":"1","article-title":"2017\/1004 of the European Parliament and of the council of 17 May 2017 on the establishment of a union framework for the collection, management and use of data in the fisheries sector and support for scientific advice regarding the common fisheries policy and repealing council regulation (EC) No 199\/2008 (recast)","volume":"157","author":"Regulation (EU)","year":"2017","journal-title":"Official Journal, L"},{"key":"e_1_2_11_65_1","volume-title":"psych: Procedures for psychological, psychometric, and personality research","author":"Revelle W.","year":"2022"},{"key":"e_1_2_11_66_1","volume-title":"MASS: Support functions and datasets for Venables and Ripley's MASS","author":"Ripley B.","year":"2022"},{"key":"e_1_2_11_67_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pbio.1002295"},{"key":"e_1_2_11_68_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00436\u2010008\u20100916\u20105"},{"key":"e_1_2_11_69_1","volume-title":"Pspearman: Spearman's rank correlation test","author":"Savicky P.","year":"2022"},{"key":"e_1_2_11_70_1","doi-asserted-by":"publisher","DOI":"10.1038\/089633a0"},{"key":"e_1_2_11_71_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-802728-8.00001-1"},{"key":"e_1_2_11_72_1","doi-asserted-by":"publisher","DOI":"10.1111\/brv.12867"},{"key":"e_1_2_11_73_1","doi-asserted-by":"publisher","DOI":"10.1016\/0169\u20105347(96)10039\u20102"},{"key":"e_1_2_11_74_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.0022\u20101112.2004.00447.x"},{"key":"e_1_2_11_75_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fsi.2008.03.018"},{"key":"e_1_2_11_76_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095\u20108649.2009.02296.x"},{"key":"e_1_2_11_77_1","doi-asserted-by":"publisher","DOI":"10.1002\/mcf2.10219"},{"key":"e_1_2_11_78_1","doi-asserted-by":"publisher","DOI":"10.1017\/S003118200100823X"},{"key":"e_1_2_11_79_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095\u20108649.1997.tb01943.x"},{"key":"e_1_2_11_80_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao013165"},{"key":"e_1_2_11_81_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao014163"},{"key":"e_1_2_11_82_1","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1093\/oso\/9780198506201.003.0003","volume-title":"The ecology of wildlife diseases","author":"Tompkins D. M.","year":"2002"},{"key":"e_1_2_11_83_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182002001506"},{"key":"e_1_2_11_84_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.0022\u20101112.2004.00447.x"},{"key":"e_1_2_11_85_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12080\u2010021\u201000506\u2010w"},{"key":"e_1_2_11_86_1","doi-asserted-by":"publisher","DOI":"10.1111\/eff.12165"},{"key":"e_1_2_11_87_1","doi-asserted-by":"publisher","DOI":"10.1051\/kmae:1998046"},{"key":"e_1_2_11_88_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010022\u201019248\u20108"},{"key":"e_1_2_11_89_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao032137"},{"key":"e_1_2_11_90_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao039121"},{"key":"e_1_2_11_91_1","doi-asserted-by":"publisher","DOI":"10.1017\/S003118200008481X"},{"key":"e_1_2_11_92_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao02524"}],"container-title":["Journal of Fish Diseases"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jfd.13822","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T08:17:20Z","timestamp":1702628240000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/jfd.13822"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,6,17]]},"references-count":91,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2023,10]]}},"alternative-id":["10.1111\/jfd.13822"],"URL":"https:\/\/doi.org\/10.1111\/jfd.13822","archive":["Portico"],"relation":{},"ISSN":["0140-7775","1365-2761"],"issn-type":[{"value":"0140-7775","type":"print"},{"value":"1365-2761","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,6,17]]},"assertion":[{"value":"2023-02-15","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-05-31","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-06-17","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}