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[{"key": "dc.contributor.advisor", "value": "Piiroinen, Saija", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Lehmann, Philipp", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Jokinen, Valtteri", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-12-13T11:50:52Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-12-13T11:50:52Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2012", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/56303", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Hormonitoiminta on yksi eli\u00f6iden s\u00e4\u00e4telyj\u00e4rjestelmist\u00e4. Hy\u00f6nteisill\u00e4 keskeisess\u00e4 osassa hormonis\u00e4\u00e4tely\u00e4 ovat juveniilihormonit (JH). Niiden m\u00e4\u00e4r\u00e4 yksil\u00f6iden elimist\u00f6ss\u00e4 s\u00e4\u00e4telee monia asioita yksil\u00f6iden kehityksest\u00e4 lis\u00e4\u00e4ntymistoimintoihin. Juuri tehokas lis\u00e4\u00e4ntyminen onkin eli\u00f6iden t\u00e4rkeimpi\u00e4 teht\u00e4vi\u00e4. Hormonitoiminta pit\u00e4\u00e4 yll\u00e4 evoluution my\u00f6t\u00e4 eri lajeille ja lajiryhmille kehittyneit\u00e4 erilaisia lis\u00e4\u00e4ntymisstrategioita: jotkin lis\u00e4\u00e4ntyv\u00e4t harvakseltaan mutta huolehtivat poikasistaan, toiset tuottavat paljon j\u00e4lkel\u00e4isi\u00e4, jotka ne j\u00e4tt\u00e4v\u00e4t selvi\u00e4m\u00e4\u00e4n yksin. Sukupuolten v\u00e4lill\u00e4 on kuitenkin eroja optimaalisessa lis\u00e4\u00e4ntymisstrategiassa. Naaraat joutuvat kuluttamaan j\u00e4lkel\u00e4isten tuottamiseen koiraita enemm\u00e4n energiaa, mink\u00e4 vuoksi koiraat voivat tuottaa hyvinkin paljon j\u00e4lkel\u00e4isi\u00e4, kun taas naarailla tulee resurssiraja vastaan. Strategiaero aiheuttaa konfliktin sukupuolten v\u00e4lill\u00e4, mik\u00e4 voi johtaa seksuaaliseen antagonismiin: tyypillisesti koiraat aiheuttavat parittelun yhteydess\u00e4 haittaa naaraille oman edun tavoittelun vuoksi. JH on yksi aineista, joilla koiraat voivat s\u00e4\u00e4dell\u00e4 naaraiden munintaa siirt\u00e4m\u00e4ll\u00e4 sit\u00e4 parittelun yhteydess\u00e4 naaraaseen. Selvitin tutkimuksessani JH:n roolia kovakuoriaisnaaraiden munantuotantoon: kuinka koiraiden ja naaraiden saama ylim\u00e4\u00e4r\u00e4inen JH-annos vaikuttaa yht\u00e4\u00e4lt\u00e4 naaraiden tuottamien munien m\u00e4\u00e4r\u00e4\u00e4n ja toisaalta niiden laatuun, ja pystyv\u00e4tk\u00f6 koiraat manipuloimaan naaraita tuottamaan enemm\u00e4n munia. K\u00e4ytin tutkimuslajina koloradonkuoriaisia (Leptinotarsa decemlineata), jotka ovat Suomessakin jo hieman jalansijaa saaneita tuhohy\u00f6nteisi\u00e4. Aktiivinen tutkimus voi auttaa kehitt\u00e4m\u00e4\u00e4n keinoja lajin levi\u00e4misen est\u00e4miseksi. Kokeessa paritin JH- ja kontrollik\u00e4siteltyj\u00e4 koiraita ja naaraita laboratoriossa kesken\u00e4\u00e4n niin, ett\u00e4 sain nelj\u00e4 ryhm\u00e4\u00e4 eri k\u00e4sittely-yhdistelmin. Hypotetisoin, ett\u00e4 ylim\u00e4\u00e4r\u00e4inen JH yht\u00e4\u00e4lt\u00e4 nostaisi naaraiden tuottamien munien m\u00e4\u00e4r\u00e4\u00e4 ja toisaalta laskisi niiden laatua. Seurasin sek\u00e4 naaraiden tuottamien munien ett\u00e4 niist\u00e4 kuoriutuneiden toukkien m\u00e4\u00e4ri\u00e4 p\u00e4ivitt\u00e4in. Tuloksista k\u00e4vi ilmi, ett\u00e4 hormonik\u00e4sittely ei vaikuta naaraiden munimien munien m\u00e4\u00e4r\u00e4\u00e4n. Naaraiden saama ylim\u00e4\u00e4r\u00e4inen JH laski kuitenkin munien laatua selv\u00e4sti kontrolliryhm\u00e4\u00e4n verrattuna. Sen sijaan hypoteesille koloradonkuoriaiskoiraiden seksuaalisesta antagonismista tutkimus ei antanut tukea. Koska tutkimuksen otoskoko oli suhteellisen pieni (N = 12), ilmi\u00f6t\u00e4 kannattaa tutkia viel\u00e4 tarkemmin.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Effects of juvenile hormone on egg production and sexual antagonism in Colorado potato beetle.\r\n\r\nHormonal activity is one of the control mechanisms of organisms. Juvenile hormones (JH) have a central role in the hormonal regulation of insects. Their amount in insects controls many things, ranging from development to reproduction activities. It is the efficient reproduction that is one of the most important objectives of any living organism. Hormonal activity maintains reproduction strategies that different taxa have developed over the course of evolution: some give birth to few descendants yet take care of them, others produce a large number of offspring and leave them to survive on their own. However, sexes have differences in their optimal reproduction strategies. In producing offspring, females must spend more energy than males, which is why males can produce a very large number of offspring but females are bounded by resources. This difference in strategies causes a conflict between sexes and may lead to sexual antagonism: typically, males harm their partner during copulation in order to get some benefit. JH is also one of the substances, with which males can control females\u2019 oviposition by transferring it into females during copulation. In my research, I studied the role of JH on egg production of beetles: how an extra dose of JH affects, on one hand, the number of eggs females produce and, on the other hand, the quality of eggs, and if males are able to manipulate females to exceed their optimal egg-producing capacity. As a study species, I used Colorado potato beetles (Leptinotarsa decemlineata), an invasive species that is slowly expanding its range to Finland. Active research may help to find means to restrict the species\u2019 expansion. In my study, I mated JH- and control-treated males and females with each other under laboratory conditions so that I had four groups with different treatment combinations. I hypothesized that the extra JH would, on one hand, raise the number of eggs females produced and, on the other hand, lower their quality. I recorded on a daily basis the number of the eggs the females produced and the number of the larvae that hatched from the eggs. The results showed that the JH treatment had no effect on the number of eggs the females laid. However, the extra JH the females received, significantly decreased the quality of eggs compared with the control group. The hypothesis about sexual antagonism was, however, not supported. Due to the rather small sample size (N = 12), the phenomenon warrants further studies.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Valtteri Jokinen (vjokine) on 2017-12-13 11:50:51.202389. Form: Kandidaatintutkielma -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/kandin-tutkielma-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 2017-12-13T11:50:51Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201712134665.pdf: 148258 bytes, checksum: 8a8a75483be0d686a2f9bc222842a4d5 (MD5)\r\nlicense.html: 4845 bytes, checksum: ebc6b38b49e7a2b160d5576810aa43b8 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-12-13T11:50:52Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201712134665.pdf: 148258 bytes, checksum: 8a8a75483be0d686a2f9bc222842a4d5 (MD5)\r\nlicense.html: 4845 bytes, checksum: ebc6b38b49e7a2b160d5576810aa43b8 (MD5)\r\n Previous issue date: 2012", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "14", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": "", "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": "hy\u00f6nteiset", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "koloradonkuoriainen", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Leptinotarsa decemlineata", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lis\u00e4\u00e4ntyminen", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "manipulointi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "munantuotanto", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Juveniilihormonin vaikutus munantuotantoon ja seksuaaliseen antagonismiin koloradonkuoriaisilla", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "bachelor thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201712134665", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Kandidaatintutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Bachelor's 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.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "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.date.updated", "value": "2017-12-13T11:50:52Z", "language": "", "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_7a1f", "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": "bachelorThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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