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[{"key": "dc.contributor.advisor", "value": "Calhim, Sara", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Vecchi, Matteo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ryndov, Serge", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-06-21T10:59:39Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-06-21T10:59:39Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/76758", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Siitti\u00f6solut ovat el\u00e4inkunnassa esiintyvist\u00e4 solutyypeist\u00e4 monimuotoisin ryhm\u00e4. Siitti\u00f6soluissa esiintyv\u00e4n muuntelun on useissa el\u00e4intaksoneissa havaittu olevan yhteydess\u00e4 parittelun j\u00e4lkeisen seksuaalivalinnan tasoon sek\u00e4 hedelm\u00f6ittymisolosuhteisiin. Esimerkiksi, seka-avioisilla lajeilla lajien sis\u00e4inen vaihtelu siitti\u00f6iden rakenteessa on v\u00e4h\u00e4isemp\u00e4\u00e4, kun taas sis\u00e4inen hedelm\u00f6itys on yhteydess\u00e4 siitti\u00f6iden monimutkaisempaan rakenteeseen. Karhukaiset ovat selk\u00e4rangattomien el\u00e4inten ryhm\u00e4, joka on parhaiten tunnettu joidenkin lajien kyvyst\u00e4 vaipua ymp\u00e4rist\u00f6olosuhteiden muuttuessa ep\u00e4suotuisiksi kryptobioosiin, jopa vuosia kest\u00e4v\u00e4\u00e4n horrostilaan. Karhukaisten lis\u00e4\u00e4ntymisbiologia ja sukusolut ovat varsin v\u00e4h\u00e4n tutkittuja aihepiirej\u00e4, mutta niiss\u00e4 tiedet\u00e4\u00e4n esiintyv\u00e4n valtavasti muuntelua. Tutkielmassani vertailin kahdentoista Macrobiotus-suvun karhukaislajin ensisijaisten lis\u00e4\u00e4ntymisominaisuuksien, kuten sukurauhasen suhteellisen koon, sek\u00e4 siitti\u00f6iden ja munien rakenteen, muuntelua lajien sis\u00e4ll\u00e4 sek\u00e4 lajien v\u00e4lill\u00e4. Lis\u00e4ksi selvitin luonnonvalinnan ja seksuaalivalinnan suhteellisia vaikutuksia siitti\u00f6iden rakenteeseen k\u00e4ytt\u00e4en mittareina munien kuorten monimutkaisuutta (luonnonvalinta) sek\u00e4 siitti\u00f6s\u00e4ili\u00f6n esiintyvyytt\u00e4 (seksuaalivalinta). Siitti\u00f6iden keskiosan suurempi koko oli yhteydess\u00e4 siitti\u00f6s\u00e4ili\u00f6n esiintyvyyteen, mik\u00e4 viittaa pitk\u00e4aikaisen sperman s\u00e4il\u00f6misen vaativan enemm\u00e4n siitti\u00f6iden keskiosien tuottamaa energiaa. Muista el\u00e4intaksoneista on tehty samankaltaisia l\u00f6yd\u00f6ksi\u00e4. Munien rakenteellisen vaihtelun ja siitti\u00f6n k\u00e4rkiosan koon v\u00e4lill\u00e4 ei vaikuttanut olevan yhteytt\u00e4. Jatkotutkimuksia koiraiden ja naaraiden sukusoluissa esiintyv\u00e4n rakenteellisen muuntelun yhteydest\u00e4 rajoittaa t\u00e4ll\u00e4 hetkell\u00e4 karhukaisten lis\u00e4\u00e4ntymismuotoihin ja paritteluk\u00e4ytt\u00e4ytymiseen liittyv\u00e4n aineiston v\u00e4h\u00e4isyys.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Spermatazoa are the most diverse cell type in the animal kingdom. In many animal taxa, sperm variation across and within species has been shown to be associated with the degree of postcopulatory sexual selection and fertilization conditions. For example, promiscuous species have reduced intraspecific sperm morphometric variation and internal fertilization is linked with more complex sperm designs. Tardigrades are micrometazoans best known for their cryptobiotic ability (i.e. a reversible dormant state when environmental conditions are unfavourable). Moreover, they have incredible yet unexplored variation in reproductive biology and gametes. I quantified the variation in tardigrade primary reproductive traits (e.g. relative gonad size, sperm and egg morphology) at intra- and inter-specific levels. I also investigated the relative roles of the evolutionary processes of natural (egg shell complexity) and sexual (presence of the spermatheca) selection on tardigrade sperm design. My comparative approach used data from 12 Macrobiotus species (order: Parachela). I found a large difference in the effect size of the relative midpiece length in the species with and without the spermatheca, indicating that the prolonged storage requires more energy that is generated in the midpiece. This corroborates similar findings across other animal taxa. The categorization of the egg type based on the morphological patterns did not seem to be associated with differences in the sperm head size; further investigation into the question of how the male and female gametes are associated in their morphology is currently hindered by a lack of data on the mode of fertilization and mating behavior in Tardigrada.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-06-21T10:59:39Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-06-21T10:59:39Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "61", "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": "gonad", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "fluorescent", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Macrobiotidae", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "midpiece", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "spermatheca", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "keskiosa", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "siitti\u00f6s\u00e4ili\u00f6", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "sukurauhanen", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "The relative roles of natural and sexual selection in the evolution of tardigrade gamete morphology", "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-202106213951", "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": "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": "4011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fluoresenssi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lis\u00e4\u00e4ntyminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lis\u00e4\u00e4ntymisk\u00e4ytt\u00e4ytyminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sperma", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evoluutio", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sukupuolivalinta", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sukusolut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evoluutiobiologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "morfologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "siitti\u00f6t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "el\u00e4intiede", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fluorescence", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "reproduction (biology)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "reproductive behaviour", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sperm", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evolution", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sexual selection", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "gametes", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evolutionary biology", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "morphology (biology)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "spermatozoa", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "zoology", "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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