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[{"key": "dc.contributor.advisor", "value": "Kankare, Maaria", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Hoikkala, Anneli", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Blomster, Anna", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2019-10-22T06:22:35Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2019-10-22T06:22:35Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/65973", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ymp\u00e4rist\u00f6n l\u00e4mp\u00f6tila vaikuttaa suuresti eli\u00f6iden selviytymiseen, kasvuun ja lis\u00e4\u00e4ntymiseen.\nHy\u00f6nteiset voivat olla herkki\u00e4 ilmastossa tapahtuville muutoksille, koska niiden\ntoimintakyky riippuu paljon ymp\u00e4rist\u00f6n l\u00e4mp\u00f6tilasta. Hy\u00f6nteisten erilaisten l\u00e4mp\u00f6tilojen\nsiet\u00e4miseen liittyv\u00e4t strategiat k\u00e4sitt\u00e4v\u00e4t elinkiertopiirteisiin, k\u00e4ytt\u00e4ytymiseen ja\nfysiologiaan liittyvi\u00e4 ominaisuuksia, joista monet voivat muuttua geneettisen sopeutumisen\nja/tai fenotyyppisen plastisuuden my\u00f6t\u00e4. Tutkielmassani selvitin hy\u00f6nteisten kuumuuden- ja\nkylmyydensietokyky\u00e4 k\u00e4ytt\u00e4en tutkimuslajeina kahta l\u00e4hisukuista mahlak\u00e4rp\u00e4slajia,\nDrosophila montanaa ja D. flavomontanaa. Tutkimuksen tavoitteina oli selvitt\u00e4\u00e4 k\u00e4rp\u00e4sten\nkuumuuden- ja kylmyydensietokyvyn lajienv\u00e4list\u00e4 ja -sis\u00e4ist\u00e4 muuntelua sek\u00e4 tutkia\nkylm\u00e4akklimoinnin vaikutusta lajien kylmyydensietokykyyn. Lis\u00e4ksi tutkin, kuinka\nhy\u00f6nteisten l\u00e4mp\u00f6tilatoleranssin mittaamisessa k\u00e4ytetyt ominaisuudet korreloivat\nkesken\u00e4\u00e4n, koska korrelaatiot voivat antaa viitteit\u00e4 eri mittojen taustalla olevista\nfysiologisista mekanismeista. Lajien kuumuuden- ja kylmyydensietokyky selvitettiin\nmittaamalla k\u00e4rp\u00e4sten kriittinen l\u00e4mp\u00f6tilamaksimi, kriittinen l\u00e4mp\u00f6tilaminimi ja\nkylm\u00e4horroksesta toipumiseen kuluva aika. Tutkitut k\u00e4rp\u00e4set olivat per\u00e4isin k\u00e4rp\u00e4slinjoista,\njoiden perustajanaaraat oli ker\u00e4tty eri puolilta Kalliovuorten aluetta Kanadasta ja\nYhdysvalloista. Tulosten mukaan D. montanalla oli keskim\u00e4\u00e4rin parempi kuumuuden- ja\nkylmyydensietokyky kuin D. flavomontanalla, ja mitatuissa ominaisuuksissa oli my\u00f6s\nlajinsis\u00e4ist\u00e4 muuntelua. D. montana -naarailla oli keskim\u00e4\u00e4rin parempi\nkuumuudensietokyky kuin lajin koirailla, kun taas D. flavomontanalla naaraiden ja koiraiden\nkuumuudensietokyvyiss\u00e4 ei ollut eroa. Kummallakaan lajilla ei l\u00f6ytynyt merkitsev\u00e4\u00e4 eroa\nnaaraiden ja koiraiden kylmyydensietokyvyss\u00e4. Lis\u00e4ksi tulosteni mukaan kummankin lajin\nk\u00e4rp\u00e4sten kylmyydensietokyky parani kylm\u00e4akklimoinnin seurauksena. D. flavomontanalla\nkriittisen l\u00e4mp\u00f6tilamaksimin ja kylm\u00e4horroksesta toipumiseen kuluvan ajan v\u00e4lill\u00e4 oli\nmerkitsev\u00e4 negatiivinen korrelaatio, mutta muilta osin mitatut\nl\u00e4mp\u00f6tilatoleranssiominaisuudet eiv\u00e4t korreloineet kesken\u00e4\u00e4n merkitsev\u00e4sti. Tutkimuksen\ntulokset tukivat aiempia tutkimustuloksia, joiden mukaan D. montana on hyvin\nkylm\u00e4nkest\u00e4v\u00e4 Drosophila-laji. Lis\u00e4ksi t\u00e4m\u00e4 tutkimus valotti v\u00e4hemm\u00e4n tutkitun lajin, D.\nflavomontanan, kuumuuden- ja kylmyydensietokykyyn liittyvi\u00e4 ominaisuuksia.\nYmm\u00e4rt\u00e4\u00e4ksemme miten eli\u00f6t reagoivat nopeasti muuttuviin ilmasto-olosuhteisiin, tarvitaan\ntietoa lajien l\u00e4mp\u00f6tilojen sietokykyyn liittyvist\u00e4 strategioista. T\u00e4m\u00e4 tutkimus selvitti n\u00e4it\u00e4\nstrategioita kahdella viileille alueille levinneell\u00e4 hy\u00f6nteislajilla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Environmental temperatures have a strong effect on the survival, growth and reproduction\nof organisms. Terrestrial insects are expected to be sensitive to changes in climate since their\nperformance is strongly affected by environmental temperature. Thermal strategies of insect\nspecies are complex combinations of the traits related to life-history, behavior and\nphysiology, and many of these traits can be modified by genetic adaptation and/or\nphenotypic plasticity. In my thesis, I studied the patterns of physiological thermal tolerance\nof insects using 2 closely-related fruit fly species, Drosophila montana and D. flavomontana,\nas model organisms. The aims of the study were to trace the patterns of basal heat and cold\ntolerances both between and within the study species and the effect of cold acclimation on\nflies\u2019 cold tolerance. I also studied how different measures of heat and cold tolerance\ncorrelate with each other, as this can provide insights into the underlying mechanisms behind\nthe different measures of insect thermal tolerance. Thermal tolerances of the flies were\nassessed by measuring flies\u2019 critical thermal maxima (CTmax), critical thermal minima\n(CTmin) and chill coma recovery times (CCRT). The flies were derived from isofemale\nstrains whose founder females had been collected from different parts of the Rocky\nMountains area (Canada/USA). According to the results, D. montana was more tolerant\nboth to heat and cold than D. flavomontana. In addition, I found intraspecific variation\namong and within populations in flies\u2019 thermal tolerance traits. D. montana female flies had\non average higher heat tolerance than males, whereas in D. flavomontana females and males\ndid not differ from each other in their heat tolerances. Neither of the species showed sex\ndifferences in flies\u2019 cold tolerance. My results also suggested that cold acclimation increases\nthe cold tolerance of the flies in both species. Apart from the significant negative correlation\nbetween CTmax and CCRT in D. flavomontana, correlations between thermal tolerance\nmeasures were non-significant within both species. The results were in line with previous\nstudies, which have shown that D. montana is a very cold tolerant Drosophila species with\nhigh cold acclimation capacity. In addition, this thesis described the patterns of thermal\ntolerance of much less studied species, D. flavomontana. In order to increase the\nunderstanding of the means that organisms and species have for coping with the rapidly\nchanging climate, it is crucial to study the fundamentals of thermal strategies adopted by the\nspecies. This thesis described patterns of these strategies in insect species which have\ndistributed to relatively cold areas.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2019-10-22T06:22:35Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2019-10-22T06:22:35Z (GMT). No. of bitstreams: 0\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "31", "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": "eng", "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": "cold tolerance", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "heat tolerance", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "thermal stress", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "adaptation", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Patterns of thermal tolerance in Drosophila montana and D. flavomontana", "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-201910224545", "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": "restrictedAccess", "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": "akklimatisaatio", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kylmyys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hy\u00f6nteiset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "l\u00e4mp\u00f6tila", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "acclimation", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "cold", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "insects", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "temperature", "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.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/en/workspaces/facilities).", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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