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[{"key": "dc.contributor.advisor", "value": "Koskela, Esa", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Siitari, Heli", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Vilppola, Mirva", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2015-12-10T22:10:05Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2015-12-10T22:10:05Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2015", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1505776", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/48049", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ihmistoiminta on joko suoraan tai v\u00e4lillisesti aiheuttanut useiden lajien populaatioiden taantumisen ja jopa sukupuuton. El\u00e4inten tarhauksen ja kasvatustoiminnan avulla pyrit\u00e4\u00e4n s\u00e4ilytt\u00e4m\u00e4\u00e4n lajin kanta elinvoimaisena vapauttamalla tarhassa kasvatettuja yksil\u00f6it\u00e4 luontoon. Tarhaolosuhteet voivat kuitenkin poiketa paljon luonnonoloista, jolloin valintapaineet ovat erilaiset kuin luonnossa. Jos tarhaus jatkuu useita sukupolvia, yksil\u00f6t sopeutuvat tarhaolosuhteisiin, jolloin ne voivat poiketa villeist\u00e4 alkuper\u00e4isyksil\u00f6ist\u00e4. Suomessa peltopyy (Perdix perdix) on yksi maatalousymp\u00e4rist\u00f6n muutoksen seurauksena taantunut laji. Maa- ja mets\u00e4talousministeri\u00f6 on laatinut Suomen peltopyykannan hoitosuunnitelman, jonka tavoitteena on palauttaa elinvoimainen peltopyykanta alueille, joilla se on ennen ollut yleinen. Peltopyykantaa pyrit\u00e4\u00e4n vahvistamaan parantamalla elinymp\u00e4rist\u00f6j\u00e4 sek\u00e4 mahdollisesti istuttamalla tarhattuja yksil\u00f6it\u00e4 sopiville alueille. Pro gradu -ty\u00f6ni tarkoituksena oli selvitt\u00e4\u00e4, eroavatko poikasvaiheen pedonv\u00e4ltt\u00e4misk\u00e4ytt\u00e4ytyminen kahdella eri peltopyyn alalajilla. Tutkimuksessani vertailtiin Suomessa luonnonvaraisena esiintyv\u00e4n peltopyyn eli niin sanotun \u201dit\u00e4isen\u201d alalajin (P. p. lucida) ja etel\u00e4mp\u00e4n\u00e4 esiintyv\u00e4n \u201dl\u00e4ntisen\u201d alalajin (P. p. perdix) pedonv\u00e4ltt\u00e4misk\u00e4ytt\u00e4ytymist\u00e4 avokentt\u00e4kokeen ja haukkakokeen avulla. Peltopyyn poikaset jaettiin ryhmiin ja poikasten k\u00e4ytt\u00e4ytymist\u00e4 tutkittiin n\u00e4iss\u00e4 ryhmiss\u00e4. Poikasryhm\u00e4t testattiin kolmeen kertaan, jotta voitiin n\u00e4hd\u00e4, kuinka poikasten k\u00e4ytt\u00e4ytyminen kehittyy. Tulosteni perusteella it\u00e4iset poikasryhm\u00e4t olivat aktiivisempia kuin l\u00e4ntiset. Kun poikaset olivat noin 1,5 kuukauden ik\u00e4isi\u00e4, alalajien v\u00e4lill\u00e4 oli eroa haukkamalliin reagoimisessa: it\u00e4iset poikasryhm\u00e4t hajaantuivat merkitsev\u00e4sti enemm\u00e4n kuin l\u00e4ntiset. Haukan lennetty\u00e4 poikasten yli passiivisemmat l\u00e4ntiset poikasryhm\u00e4t olivat my\u00f6s jokaisella testauskerralla kauemmin paikoillaan kuin it\u00e4iset koeryhm\u00e4t. Olisi t\u00e4rke\u00e4\u00e4 selvitt\u00e4\u00e4, onko it\u00e4isten poikasten suuremmasta aktiivisuudesta todellista hy\u00f6ty\u00e4 niiden selviytymiselle luonnossa. Tarvetta jatkotutkimuksille siis on, kun p\u00e4\u00e4tet\u00e4\u00e4n, vahvistetaanko it\u00e4isi\u00e4 peltopyykantoja Suomessa tarhattujen yksil\u00f6iden istutuksilla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Human activity has either directly or indirectly caused decline and even extinction in the populations of several species. Captive breeding projects aim to maintain a viable population of the species by releasing captive-bred individuals into the wild. However, captive environments can differ a lot from natural habitats and the selection pressures on captive animals are different from those in the wild. If captive breeding continues for several generations, individuals adapt to the captive conditions, and differ from wild individuals. In Finland, the populations of grey partridges (Perdix perdix) have declined as a result of agricultural environmental change. The Ministry of Agriculture and Forestry has prepared a management plan for the populations of Finnish grey partridges. The plan aims to return viable populations of the grey partridges to areas where they have previously been common. Grey partridges are going to be restored to their natural habitats by improving the habitats and possibly releasing captive bred individuals into suitable areas. The purpose of my master's thesis was to find out if the anti-predator behaviour differs between two different subspecies of grey partridges, so called \u201ceastern\u201d subspecies (P. p. lucida) that is naturally found in Finland and \u201cwestern\u201d subspecies (P. p. perdix) that is naturally found further south. Chicks of grey partridges were divided into groups and their behaviour was repeatedly tested by using open-field tests and hawk tests at three different ages. According to my results the eastern chicks were more active than the western ones. When the chicks were about 1.5 months old, there were differences between subspecies in their responses to a hawk model. The eastern chicks scattered significantly more than the western ones. Also each testing time when the hawk model had flown over the chicks the more passive western ones remained in place for a longer period of time than the eastern ones. It would be important to find out whether the greater activity of the eastern chicks does have any real benefits for their survival in the wild. There is need for further studies when deciding whether we are going to build up the number of individuals of the eastern grey partridge in Finland by using captive-bred individuals or not.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Mirva Vilppola (mijopalo) on 2015-12-10 22:10:04.694640. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2015-12-10T22:10:05Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201512113979.pdf: 198813 bytes, checksum: baceff7a8c9b8b93f3701938ecb34ef3 (MD5)\nlicense.html: 4890 bytes, checksum: 505e1246a34883d64b28f9eb27311bb0 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2015-12-10T22:10:05Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201512113979.pdf: 198813 bytes, checksum: baceff7a8c9b8b93f3701938ecb34ef3 (MD5)\nlicense.html: 4890 bytes, checksum: 505e1246a34883d64b28f9eb27311bb0 (MD5)\n Previous issue date: 2015", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (22 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": "pedonv\u00e4ltt\u00e4misk\u00e4ytt\u00e4ytyminen", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Uudelleenistutuksien ongelmat : poikasten pedonv\u00e4ltt\u00e4misk\u00e4ytt\u00e4ytyminen kahdella tarhatulla peltopyyn (Perdix perdix) alalajilla", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.title.alternative", "value": "Poikasten pedonv\u00e4ltt\u00e4misk\u00e4ytt\u00e4ytyminen kahdella tarhatulla peltopyyn (Perdix perdix) alalajilla", "language": null, "element": "title", "qualifier": "alternative", "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-201512113979", "language": null, "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": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", 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