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dc.contributor.authorSu, Houyi
dc.date.accessioned2018-08-08T05:24:00Z
dc.date.available2018-08-08T05:24:00Z
dc.date.issued2018
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/59139
dc.description.abstractIn parasite-host interactions, hosts can respond to parasites by alteration of life history traits. Intraspecific larval developmental polymorphism in some polychaetes, termed poecilogony, might be a plastic response to parasite load. Poecilogony in the worm Pygospio elegans is linked to nutritional provisioning by the mother worms, while parasites can compete for nutrition. In this project, I attempted to test whether parasite load could have an effect on larval developmental mode in P. elegans. The hypothesis was that more planktonic larvae could be produced by P. elegans as a potential means of avoiding local parasites when P. elegans faced high parasite load. I developed and carried out a ddPCR assay to quantify an apicomplexan parasite, Selenidium sp., known to infect P. elegans. Then I compared parasite load between two groups of worm populations – one group featuring planktonic larvae and the other group featuring benthic larvae. Besides, I studied the correlation between genetic diversity and parasite load, and compared parasite load between populations from the Baltic Sea and the North Sea. No significant difference of parasite load was found between populations where planktonic larvae dominated and populations where benthic larvae dominated. Parasite load did not appear to have a significant effect on poecilogony. Yet lower genetic diversity significantly led to higher parasite load in the worm populations. Moreover, difference of parasite load between the Baltic Sea and the North Sea was significant, indicating that geography, which did not appear to play a direct role in larval developmental mode, might be correlated with the distribution of the apicomplexan parasite. Although extensive further research are required, this novel study on the relationship between parasite load and larval developmental mode as well as successful implementation of ddPCR for parasite load quantification will shed light on further research.en
dc.format.extent43
dc.language.isoen
dc.rightsIn Copyrighten
dc.subject.otheralteration of life history traits
dc.subject.otherdroplet digital PCR
dc.subject.otherhost response
dc.subject.othergenetic marker
dc.subject.otherparasite quantification
dc.subject.otherpoecilogony
dc.titleEffect of parasite load on developmental mode polymorphism in Pygospio elegans : a preliminary test
dc.typemaster thesis
dc.identifier.urnURN:NBN:fi:jyu-201808083778
dc.type.ontasotMaster’s thesisen
dc.type.ontasotPro gradu -tutkielmafi
dc.contributor.tiedekuntaMatemaattis-luonnontieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Sciencesen
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.oppiaineEkologia ja evoluutiobiologiafi
dc.contributor.oppiaineEcology and evolutionary biologyen
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.publicationmasterThesis
dc.contributor.oppiainekoodi4011
dc.subject.ysoloiset
dc.subject.ysoparasites
dc.rights.urlhttps://rightsstatements.org/page/InC/1.0/
dc.rights.accessrightsTekijä ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyväskylän yliopiston kirjaston arkistotyösemalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat..fi
dc.rights.accessrightsThe author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyväskylä University Library (https://kirjasto.jyu.fi/en/workspaces/facilities).en


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