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[{"key": "dc.contributor.advisor", "value": "Haapakoski, Marko", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Yl\u00f6nen, Hannu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Sallinen, Annamari", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-04-09T06:16:21Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-04-09T06:16:21Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/74996", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Saalisel\u00e4inten ruokailuun vaikuttavat muun muassa ravitsemustila ja petoriski. Ravitsemustilan vaikutusta ruokailup\u00e4\u00e4t\u00f6ksiin korkean petopaineen alaisuudessa on tutkittu vasta v\u00e4h\u00e4n. Tutkimuksessa pyrittiin selvitt\u00e4m\u00e4\u00e4n, vaikuttaako ravitsemustila mets\u00e4myyr\u00e4n (Myodes glareolus) ruokailup\u00e4\u00e4t\u00f6kseen petoriskin alaisuudessa ja vaikuttaako se mahdollisen energiansaannin kautta myyr\u00e4n lis\u00e4\u00e4ntymiseen. Myyrille annettiin laboratoriossa joko 30 % tai 8 % proteiinia sis\u00e4lt\u00e4vi\u00e4 pellettej\u00e4 ja niiden ruokailuk\u00e4ytt\u00e4ytymist\u00e4 mitattiin Konneveden tutkimusaseman myyr\u00e4tarhoissa keinotekoisilla ravintolaikuilla, jotka sis\u00e4lsiv\u00e4t auringonkukansiemeni\u00e4 ja hiekkaa. Ravintolaikkujen viereen laitettiin joko lumikon (Mustela nivalis) hajuista tai puhdasta purua. Laikuille j\u00e4\u00e4nest\u00e4 ravinnosta laskettiin luovutustiheys eli GUD (=Giving-up-density). GUD on osuus ravinnonm\u00e4\u00e4r\u00e4st\u00e4, jonka el\u00e4in j\u00e4tt\u00e4\u00e4 laikkuun, kun ravinnon etsimisen aika kasvaa sen v\u00e4hetess\u00e4. Myyrien pariteltua tarhoissa naaraat siirrettiin laboratorioon synnytt\u00e4m\u00e4\u00e4n, jossa poikueiden koko ja poikasten paino mitattiin. Luovutustiheyksiss\u00e4 oli eroja vain toisella ja kolmannella viikolla, mutta haju ja ravinto vaikuttivat yhdess\u00e4 luovutustiheyksiin. Hyv\u00e4n ravinnon myyr\u00e4t suosivat puhdasta purua sis\u00e4lt\u00e4vi\u00e4 laikkuja ja huonon ravinnon myyr\u00e4t lumikonhajuisia laikkuja. Eri ravitsemustaustalla olleet naaraat eiv\u00e4t eronneet toisistaan poikueen koossa tai poikasten painossa. Tulokset osoittavat, ett\u00e4 huonon ravitsemustilan myyr\u00e4t ottivat suurempia riskej\u00e4 kuin hyv\u00e4n ravitsemustilan myyr\u00e4t. Ravintok\u00e4sittely ei vaikuttanut kuitenkaan myyrien lis\u00e4\u00e4ntymiseen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Both nutritional status and risk of predation affect foraging of prey animals. There are only a few studies which have studied how an animal\u2019s nutritional status will affect its foraging decisions under high predation risk. The goal of the research was to study does the nutritional status affect to the bank vole\u2019s (Myodes glareolus) foraging decision under the risk of predation and does this affect to vole\u2019s reproduction via obtained energy. Voles were given either 30 % or 8 % protein-containing pellets in the laboratory, and their foraging behavior was subsequently measured using artificial food patches in field enclosures at Konnevesi research station. Patches contained sunflower seeds mixed to sand and next to them was put either clean bedding or the least weasels\u2019 (Mustela nivalis) beddings. Food which was left to patches, was measured as giving-up-density (GUD). GUD is a portion of food which animal leaves to the patch as the amount of food decreases and the time for searching food and risk of predation increase. When voles had mated in enclosures, females were moved to the laboratory to give birth. The size of the litter and the weight of pups were measured. GUDs differed from each other only during the second and the third week with both scent and food affecting the GUDs. Voles fed with good food preferred patches with clean bedding and voles fed with bad food preferred patches with weasel\u2019s scent. Females fed with good or bad food didn\u2019t differ from each other in litter size or pups\u2019 weight. Results indicate that voles with poor nutritional status took bigger risks than voles with better nutritional status, but nutritional status didn\u2019t affect to the voles\u2019 breeding.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2021-04-09T06:16:21Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-04-09T06:16:21Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "52", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "luovutustiheys", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "saalistusriski", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Sy\u00f6 tai tule sy\u00f6dyksi : vaikuttaako ravitsemustila mets\u00e4myyr\u00e4n (Myodes glareolus) ruokailuk\u00e4ytt\u00e4ytymiseen ja lis\u00e4\u00e4ntymiseen petoriskin alaisuudessa?", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202104092310", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ekologia ja evoluutiobiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ecology and evolutionary biology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kelpoisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ravintoarvo", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ravinto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "myyr\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lumikko", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ruokailu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ravitsemus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "haju", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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