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[{"key": "dc.contributor.advisor", "value": "Karjalainen, Juha", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Nyholm, Kristiina", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Taskinen, Salla", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-03-05T06:24:11Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-03-05T06:24:11Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/68071", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Muikku (Coregonus albula) on laajalle levinnyt, pienikokoinen syyskutuinen parvikala, jonka poikaset kuoriutuvat kev\u00e4\u00e4ll\u00e4 pitk\u00e4n hautoutumisjakson j\u00e4lkeen. Muikun hedelm\u00f6itettyjen munien hautoutumisajan pituuteen vaikuttavat useat tekij\u00e4t, joista suurin vaikutus on l\u00e4mp\u00f6tilalla. Mit\u00e4 korkeampi hautoutumisl\u00e4mp\u00f6tila, sit\u00e4 aiemmin, pienempikokoisina ja v\u00e4hemm\u00e4n kehittynein\u00e4 poikaset kuoriutuvat. Suomen oloissa muikun kutu tapahtuu loka-marraskuussa, ja alkioiden kehittyminen alkaa syksyll\u00e4 veden l\u00e4mp\u00f6tilan ollessa 3\u20136 \u00b0C, ja poikaset kuoriutuvat kev\u00e4\u00e4ll\u00e4 j\u00e4idenl\u00e4hd\u00f6n aikaan. Syksyn kutujakson keston ja ajoittumisen vaikutusta kev\u00e4\u00e4n kuoriutumisajankohtaan ei ole aiemmin tutkittu. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 hy\u00f6dynnet\u00e4\u00e4n Etel\u00e4\u2013Konneveden Kotilahdesta viiden vuoden aikana ker\u00e4tty\u00e4 l\u00e4mp\u00f6tila-aineistoa. Aineiston pohjalta tarkastellaan vuosienv\u00e4list\u00e4 vaihtelua muikun hautoutumisoloissa, p\u00e4iv\u00e4astemallin ennustaman kev\u00e4\u00e4n kuoriutumisjakson kestoa ja ajoitusta sek\u00e4 sit\u00e4, kuinka syksyn kutujakso vaikuttaa seuraavan kev\u00e4\u00e4n kuoriutumiseen. Veden l\u00e4mp\u00f6tilan ja p\u00e4iv\u00e4astesumman (jokaisen hautoutumisvuorokauden veden keskim\u00e4\u00e4r\u00e4isen l\u00e4mp\u00f6tilan summa) vaihteluita eri vuosina tarkasteltiin koko hautoutumisjakson sek\u00e4 l\u00e4mp\u00f6tilan perusteella m\u00e4\u00e4riteltyjen syksy-, talvi- ja kev\u00e4tjakson osalta. P\u00e4ivitt\u00e4iset veden l\u00e4mp\u00f6tilat sijoitettiin todenn\u00e4k\u00f6isimm\u00e4t kuoriutumisp\u00e4iv\u00e4t ennustavaan p\u00e4iv\u00e4astemalliin, ja mallin ennusteiden avulla arvioitiin syksyn kutujakson vaikutusta kuoriutumiseen. Vuosien v\u00e4lill\u00e4 syksyt ja kev\u00e4\u00e4t erosivat eniten toisistaan sek\u00e4 jakson kestossa ett\u00e4 p\u00e4iv\u00e4astesummakertym\u00e4ss\u00e4. P\u00e4iv\u00e4astemallin ennusteen mukaan suurin osa poikasista kuoriutuu j\u00e4iden l\u00e4hd\u00f6n j\u00e4lkeen, kun veden l\u00e4mpeneminen lis\u00e4\u00e4ntymisalueilla kiihtyy.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Vendace (Coregonus albula) is a widely spread small-sized cold-adapted schooling fish. Temperature is the most important single factor determining the length of the incubation period of vendace larvae. High temperatures during the incubation period lead to early hatching and small-sized, less developed larvae. In Finland, the spawning of vendace occurs in the autumn (October-November) when water temperature is 3\u20136 \u00b0C, and the larvae hatch in the following spring during ice-out. The effect of autumnal spawning period on the hatching period in the following spring has remained unstudied so far. In this thesis, temperature data collected over five years from the Kotilahti bay in the Lake Etel\u00e4-Konnevesi was used to study the inter-annual variations in water temperatures during the incubation period of vendace eggs and larvae, the length and timing of a degree-day-modelled hatching period as well as the effect of the autumnal spawning period to the hatching period in the following spring. Inter-annual variations in water temperatures and degree-day sums (sum of mean water temperatures on each incubation day) were studied by comparing the entire incubation period and the temperature-based autumn, winter and spring periods in different years. The daily water temperatures were set to a degree-day model, which predicts to most probable hatching dates. Inter-annual variations in both the length of the period as well as the degree-day sum were greatest during autumns and springs. According to the predictions of the degree-day model, majority of the eggs hatch after ice-out when water temperatures start to rise rapidly.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2020-03-05T06:24:11Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-03-05T06:24:11Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "40", "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": "hautoutumisjakso", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kuoriutumismalli", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kutujakso", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "p\u00e4iv\u00e4astesumma", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Muikun (Coregonus albula) munien hautoutumisenaikainen l\u00e4mp\u00f6tila Etel\u00e4-Konnevedell\u00e4 : vuosien v\u00e4liset vaihtelut ja vaikutus kuoriutumisjaksoon", "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-202003052293", "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": "Akvaattiset tieteet", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Aquatic sciences", "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": "4012", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuoriutuminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kutu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "muikku", "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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