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dc.contributor.authorHoland, Håkon
dc.contributor.authorJensen, Henrik
dc.contributor.authorTufto, Jarle
dc.contributor.authorSoliman, Mustafa M.
dc.contributor.authorPärn, Henrik
dc.contributor.authorSæther, Bernt-Erik
dc.contributor.authorRingsby, Thor Harald
dc.date.accessioned2017-10-30T12:50:48Z
dc.date.available2017-10-30T12:50:48Z
dc.date.created2014-04-25T20:40:51Z
dc.date.issued2014
dc.identifier.citationJournal of Avian Biology. 2014, 45 (4), 365-373.nb_NO
dc.identifier.issn0908-8857
dc.identifier.urihttp://hdl.handle.net/11250/2462893
dc.description.abstractThe effect of parasites in natural populations has received increasing attention in recent years. Studies have shown that parasites may play an important part in population ecology due to their potential effects on host fitness. The main purpose of the present study was to investigate the effect of a nematode parasite (gapeworm, Syngamus trachea) on survival probability of house sparrows Passer domesticus from six natural populations located on 4 islands in the Helgeland archipelago in northern Norway. Infection status was obtained from feces samples collected from 603 house sparrows in the summer and autumn of 2007–2011. We also collected data on a visible symptom of severe infection (gasping for air) in 1391 house sparrows in the summer and autumn 2004–2011. We took advantage of recent advances in disease modeling in a multi-event capture–mark–recapture framework to account for imperfect observations (state uncertainty). Each dataset was separately analyzed, in both analyses we investigated the relationships of year, island, individual body condition, age class and population density with survival probabilities. The relationship between infection (determined by feces egg counts) on annual survival of house sparrows was not statistically significant. However, the probability of annual survival was found to be significantly lower for adult house sparrows exhibiting a symptom of severe gapeworm infection, gasping for air. The present study demonstrates that severe infection by a parasite can have a negative relationship with survival probability of short-lived avian hosts in wild populations.nb_NO
dc.language.isoengnb_NO
dc.publisherWileynb_NO
dc.subjectDyrnb_NO
dc.subjectAnimalnb_NO
dc.titleLower survival probability of house sparrows severely infected by the gapeworm parasitenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber365-373nb_NO
dc.source.volume45nb_NO
dc.source.journalJournal of Avian Biologynb_NO
dc.source.issue4nb_NO
dc.identifier.doi10.1111/jav.00354
dc.identifier.cristin1129988
dc.relation.projectNorges forskningsråd: 221956nb_NO
dc.relation.projectNorges forskningsråd: 223257nb_NO
dc.description.localcodeThis is the peer reviewed version of the following article: [Lower survival probability of house sparrows severely infected by the gapeworm parasite], which has been published in final form at [http://onlinelibrary.wiley.com/doi/10.1111/jav.00354/abstract]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.nb_NO
cristin.unitcode194,66,10,0
cristin.unitcode194,63,15,0
cristin.unitnameInstitutt for biologi
cristin.unitnameInstitutt for matematiske fag
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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