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[{"key": "dc.contributor.author", "value": "Myllyl\u00e4, Marjaana", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2011-08-24T14:26:26Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2011-08-24T14:26:26Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2011", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1182002", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/36580", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Kylmyys on yksi t\u00e4rkeimmist\u00e4 lajien levinneisyyteen ja runsauteen vaikuttavista stressitekij\u00f6ist\u00e4. Karaistuminen ja lis\u00e4\u00e4ntymisdiapaussi ovat esimerkkej\u00e4 hy\u00f6nteisten fysiologisesta ja biokemiallisesta sopeutumista mataliin l\u00e4mp\u00f6tiloihin. Karaistumisella tarkoitetaan lyhyen ajan sis\u00e4ll\u00e4 tapahtuvaa kylm\u00e4nkest\u00e4vyyden kasvamista, ja sill\u00e4 voi olla huomattava vaikutus kylmist\u00e4 olosuhteista selviytymiseen. Lis\u00e4\u00e4ntymisdiapaussin laukaisee ymp\u00e4rist\u00f6st\u00e4 tulevat \u00e4rsykkeet, kuten muutokset p\u00e4iv\u00e4n pituudessa ja l\u00e4mp\u00f6tilassa. Se parantaa naaraiden mahdollisuuksia selvit\u00e4 ep\u00e4edullisista vuodenajoista ja siirt\u00e4\u00e4 j\u00e4lkel\u00e4isten tuoton ajankohtaan jolloin munien ja j\u00e4lkel\u00e4isten selviytyminen on parhaimmillaan. T\u00e4m\u00e4n ty\u00f6n tavoitteena oli etsi\u00e4 sopivat l\u00e4mp\u00f6tilat ja k\u00e4sittelyajat Drosophila montana -mahlak\u00e4rp\u00e4sten kylm\u00e4nkest\u00e4vyyden mittaamiseen ja selvitt\u00e4\u00e4 vaikuttavatko lyhytaikainen karaistuminen ja lis\u00e4\u00e4ntymisdiapaussi naaraiden ja koiraiden kylm\u00e4nkest\u00e4vyyteen. Tutkimuslajina k\u00e4ytettiin D. montana -lajia, joka on sopeutunut talvehtimaan pohjoisissa luonnonoloissa. K\u00e4rp\u00e4sten kylm\u00e4nkest\u00e4vyytt\u00e4 tutkittiin mittaamalla niiden kylm\u00e4koomasta selviytymiseen kuluva aika. Tutkittavia yksil\u00f6it\u00e4 pidettiin aluksi kaksi viikkoa kasvatuskaapeissa (+16 \uf0b0C), joista toisessa oli jatkuva valaistus ja toisessa lis\u00e4\u00e4ntymisdiapaussin laukaiseva valojakso 16:8 (16 tuntia valoa ja 8 tuntia pime\u00e4\u00e4). Ennen kylm\u00e4nkest\u00e4vyyskoetta puolet yksil\u00f6ist\u00e4 sai karaistumisk\u00e4sittelyn (1 tunti 0 \uf0b0C:ssa). Varsinaiset kylm\u00e4nkest\u00e4vyyskokeet kestiv\u00e4t 16 tuntia ja ne tehtiin kolmessa eri l\u00e4mp\u00f6tilassa (\u22126 \uf0b0C, \u22127 \uf0b0C ja \u22128 \uf0b0C). T\u00e4m\u00e4n tutkimuksen perusteella voitiin p\u00e4\u00e4tell\u00e4, ett\u00e4 Drosophila montanan kylm\u00e4koomasta selvi\u00e4miseen kuluva aika voidaan parhaiten mitata \u22126 \u02daC:ssa altistusajan ollessa 16 tuntia. T\u00e4m\u00e4 l\u00e4mp\u00f6tila oli riitt\u00e4v\u00e4 k\u00e4sittelyjen v\u00e4listen erojen selvitt\u00e4miseksi, mutta ei liian rankka k\u00e4rp\u00e4sten selviytymisen kannalta. Tutkimuksen perusteella lis\u00e4\u00e4ntymisdiapaussi parantaa naaraiden ja samoissa olosuhteissa kasvatettujen koiraiden kylm\u00e4nkest\u00e4vyytt\u00e4, karaistumisen vaikutuksen ollessa selkein naarailla, jotka eiv\u00e4t ole diapaussissa. Diapaussin ja karaistumisen aikaansaamat muutokset k\u00e4rp\u00e4sen fysiologiassa voivat olla samankaltaisia, ja n\u00e4in karaistumisen antama lis\u00e4hy\u00f6ty on l\u00e4hes olematonta tai sattumanvaraista lis\u00e4\u00e4ntymisdiapaussissa oleville yksil\u00f6ille.", "language": null, "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Marjaana Myllyl\u00e4 (mamylly) on 2011-08-24 14:26:23.912411. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2011-08-24T14:26:25Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-2011082411289.pdf: 385860 bytes, checksum: a42b1b525a44d0a134dd77fdd221417b (MD5)\nlicense.html: 5055 bytes, checksum: 8af25d5aac3388e5bc2a3ef0834872e5 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2011-08-24T14:26:26Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-2011082411289.pdf: 385860 bytes, checksum: a42b1b525a44d0a134dd77fdd221417b (MD5)\nlicense.html: 5055 bytes, checksum: 8af25d5aac3388e5bc2a3ef0834872e5 (MD5)\n Previous issue date: 2011", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "26 sivua", "language": null, "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": "kylm\u00e4kooma", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lepokausi", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "chill coma recovery time", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Karaistumisen ja lis\u00e4\u00e4ntymisdiapaussin vaikutukset Drosophila montana -mahlak\u00e4rp\u00e4sten kylm\u00e4nkest\u00e4vyyteen", "language": null, "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-2011082411289", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "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": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "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": "dc.date.updated", "value": "2011-08-24T14:26:26Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"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": "fi", "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": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "Drosophila montana", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mahlak\u00e4rp\u00e4set", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kylm\u00e4nkest\u00e4vyys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "karaistuminen", "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, 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