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[{"key": "dc.contributor.author", "value": "Saarikoski, Hanna", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2010-04-14T12:41:52Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2010-04-14T12:41:52Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2010", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1126606", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/23236", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Siian rakkoloisio (Henneguya zschokkei) on Myxozoa-p\u00e4\u00e4jaksoon kuuluva iti\u00f6loinen. Myxozoa-loisilla on monimutkainen el\u00e4m\u00e4nkierto, joka pit\u00e4\u00e4 sis\u00e4ll\u00e4\u00e4n sek\u00e4 selk\u00e4rangattoman ett\u00e4 selk\u00e4rankaisen is\u00e4nt\u00e4eli\u00f6n. Siian rakkoloision p\u00e4\u00e4is\u00e4nt\u00e4 on harvasukamato (Oligochaeta) ja v\u00e4li-is\u00e4nt\u00e4 on siika (Coregonus lavaretus). Rakkoloisiota on tavattu mahdollisesti my\u00f6s muikulla (C. albula). Loisitun kalan lihaksessa on valkoisia ellipsin muotoisia kystej\u00e4, joiden sis\u00e4ll\u00e4 on maitomaista nestett\u00e4. Neste sis\u00e4lt\u00e4\u00e4 suuren m\u00e4\u00e4r\u00e4n mikroskooppisia kaksih\u00e4nt\u00e4isi\u00e4 myksospoori-iti\u00f6it\u00e4. Kalan lihaksessa voi olla useita, jopa satoja erikokoisia kystej\u00e4. Loinen aiheuttaa ongelmia niin kalanviljelyss\u00e4 kuin vapaa-ajankalastuksessakin. RKTL:n mukaan rakkoloisio on yksi t\u00e4rkeimmist\u00e4 siian viljelyn kehittymist\u00e4 haittaavista tekij\u00f6ist\u00e4 maassamme. Loisen aiheuttamien haittojen ehk\u00e4isemiseksi el\u00e4m\u00e4nkierron ymm\u00e4rt\u00e4minen on t\u00e4rke\u00e4\u00e4.\nTutkimuksen p\u00e4\u00e4kysymykset olivat: a) mik\u00e4 harvasukamatolaji toimii loisen p\u00e4\u00e4is\u00e4nt\u00e4n\u00e4, b) mik\u00e4 on loisen kehittymisnopeus siiassa ja c) mik\u00e4 on loisen kehittymisnopeus harvasukamadossa?\nPro gradu \u2013tutkielmassani selvitettiin loisen harvasukamatois\u00e4nt\u00e4, kehittymisnopeus harvasukamatois\u00e4nn\u00e4ss\u00e4 ja el\u00e4m\u00e4nkierto kokeellisin infektoinnein. 3,5 kuukauden kuluttua harvasukamatojen infektoinnista oli ensimm\u00e4iset aktinospoorit havaittavissa\n8 \u00b0C l\u00e4mp\u00f6tilassa. 16 \u00b0C:ssa ja infektoimattomissa kontrolleissa aktinospooreja ei kehittynyt. Is\u00e4nt\u00e4lajiksi paljastui Stylodrilus heringianus-harvasukamato, joka kuuluu Lumbriculidae-heimoon. Siian rakkoloision aktinospoori-vaihetta ei ole onnistuttu aikaisemmin havaitsemaan eik\u00e4 harvasukamatois\u00e4nt\u00e4\u00e4 ole tunnettu.\nIs\u00e4nt\u00e4laji saatiin selville seuraamalla matoyksil\u00f6ist\u00e4 tulevaa parveilua kuoppalevyll\u00e4.\nLoisen kehittymisnopeutta siiassa selvitettiin tutkimalla rakkoloisio-infektiota vuodenaikaisesti kes\u00e4kuulta syyskuulle kolmella eri siikakohortilla kalanviljelylaitoksella. Kalat olivat saaneet infektion sis\u00e4maan kalanviljelylaitoksessa. Tutkimuksessa selvisi, ett\u00e4 uusi kystisukupolvi ilmestyy kaloihin elokuussa ja vaikka hyvin harvoin ensimm\u00e4iset infektiot olivat havaittavissa jo toisena kes\u00e4n\u00e4, alkoivat loisen kystit erottua siioista p\u00e4\u00e4asiassa vasta kalan kolmannen kes\u00e4n aikana.", "language": "", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Hanna Saarikoski (hasusaar) on 2010-04-14 12:41:49.820198. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2010-04-14T12:41:52Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201004141530.pdf: 313197 bytes, checksum: dba1925f3f67f2d46124720bd8b3ce5b (MD5)\nlicense.html: 5043 bytes, checksum: e5ee8a37b52734a14b17b943af56d1dd (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2010-04-14T12:41:52Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201004141530.pdf: 313197 bytes, checksum: dba1925f3f67f2d46124720bd8b3ce5b (MD5)\nlicense.html: 5043 bytes, checksum: e5ee8a37b52734a14b17b943af56d1dd (MD5)\n Previous issue date: 2010", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "23 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": "Henneguya zschokkei", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Myxozoa", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Coregonus lavaretus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Stylodrilus heringianus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "myksospoori", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "aktinospoori", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Siian rakkoloision (Henneguya zschokkei) el\u00e4m\u00e4nkierto sek\u00e4 esiintyminen kalassa ja harvasukamadossa", "language": null, "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-201004141530", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "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": 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