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[{"key": "dc.contributor.advisor", "value": "Karjalainen, Juha", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "M\u00e4kinen, Mikko", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Honkanen, Ella", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Yli-Tuomola, Aliisa", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2022-02-02T12:25:48Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2022-02-02T12:25:48Z", "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/123456789/79623", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Suomen j\u00e4rviss\u00e4 luontaisesti esiintyv\u00e4n sulfaatin m\u00e4\u00e4r\u00e4n on havaittu kasvavan vesist\u00f6iss\u00e4 viimeisen sadan vuoden aikana. Sulfaattia p\u00e4\u00e4tyy vesist\u00f6ihin erin\u00e4isist\u00e4 haja- ja pistekuormitusl\u00e4hteist\u00e4, kuten maataloudesta ja teollisuudesta. Kalojen nuoruusvaiheiden, etenkin hedelm\u00f6ittymisen ja alkion varhaiskehityksen, on havaittu olevan herkki\u00e4 vaiheita sulfaatin vaikutuksille. Ymp\u00e4rist\u00f6n ominaisuuksien, kuten osmolaliteetin, pH:n, l\u00e4mp\u00f6tilan ja ionien pitoisuuksien, on havaittu vaikuttavan kalojen sukusoluihin. Tutkimme sulfaatin eri pitoisuuksien vaikutuksia s\u00e4rjen (Rutilus rutilus) siitti\u00f6ihin aktivoimalla siitti\u00f6it\u00e4 sulfaattipitoisella vedell\u00e4 ja mittaamalla eri sulfaattipitoisuuksien vaikutusta siitti\u00f6iden liikkuvuuteen ja aktiivisuuteen. Arvioimme sulfaatin vaikutusta k\u00e4ytt\u00e4en CASA-ohjelmaa (Computer Assisted Semen Analysis) ottamalla videot siitti\u00f6iden liikkeist\u00e4 10, 20 ja 40 sekunnin kohdalla siitti\u00f6iden aktivoitumisesta. Videoiden perusteella analysoitiin kahta siitti\u00f6iden aktiivisuutta kuvailevaa muuttujaa: aktiivisten siitti\u00f6iden osuutta sek\u00e4 uintinopeutta (VCL eli siitti\u00f6iden kurvilineaarinen nopeus). Tutkimuksessa havaitsimme, ett\u00e4 korkeissa sulfaattipitoisuuksissa sek\u00e4 aktiivisten siitti\u00f6iden osuus ett\u00e4 keskim\u00e4\u00e4r\u00e4inen uintinopeus olivat suurempia, mik\u00e4 voi vaikuttaa positiivisesti siitti\u00f6iden hedelm\u00f6ityskykyyn. Lis\u00e4tutkimukset sulfaatin vaikutuksista hedelm\u00f6ittymiseen ovat kuitenkin tarpeen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The amount of natural sulphate concentration in Finnish lakes has been observed to increase over the last hundred years. Sulphate ends up in waters from a variety of different diffuse and point loading sources, such as agriculture and industry. The early developmental stages of fish, especially fertilization and early embryonic development have been found to be sensitive to the effects of sulphate. Environmental factors, such as osmolality, pH, temperature, and other ions compositions affect the gametes. We studied the effects of different concentrations on roach (Rutilus rutilus) sperm by activating them by water containing sulphate and observing the activity and motility of the cells. We estimated the effect of sulphate with CASA (Computer Assisted Semen Analysis) software by taking video recording of the movement of the sperm cells at 10, 20 and 40 seconds of sperm activation. We analyzed two variables describing sperm activity: the proportion of active sperm cells and VCL, i.e., curvilinear velocity. In the study, we found that sulphate increased the proportion of active spermatozoa and average curvilinear velocity at the highest concentrations and thus, may affect positively the fertilization ability of spermatozoa. However, fertility effects remained open and need further research.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2022-02-02T12:25:48Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2022-02-02T12:25:48Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "26", "language": "", "element": "format", "qualifier": "extent", "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.title", "value": "Sulfaatin vaikutus s\u00e4rjen siitti\u00f6iden liikkuvuuteen", "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-202202021383", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Bachelor's thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Kandidaatinty\u00f6", "language": "fi", "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": "Ymp\u00e4rist\u00f6tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Environmental science", "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_7a1f", "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": "bachelorThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "40151", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sulfaatit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "vesist\u00f6t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kalat", "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": "hedelm\u00e4llisyys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ymp\u00e4rist\u00f6", "language": null, "element": "subject", "qualifier": "yso", "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/collections/archival-workstation).", "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/kokoelmat/arkistotyoasema..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}]
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