Effects of host community structure on parasite transmission and disease risk

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dc.contributor.authorAhn, Sangwook
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorGoater, Cameron P.
dc.date.accessioned2019-12-15T18:59:41Z
dc.date.available2019-12-15T18:59:41Z
dc.date.issued2019
dc.degree.levelMastersen_US
dc.description.abstractThis thesis aims to determine how parasite transmission responds to temporal, spatial, or ecological factors such as host biodiversity. For this study, I used a fathead minnow/trematode parasite study system and incorporated both field and experimental components. Long-term data on the parasite population sizes in fathead minnows from two lakes in Alberta indicate that parasite population sizes are highly variable. Simultaneous infections by multiple parasite species in fathead minnows is the norm, with closely related parasite species exhibiting similar long-term trends in population dynamics. Increases in host biodiversity is thought to decrease parasite transmission, however, my experiments indicate that biodiversity is not directly causing a decrease in transmission of the trematode Ornithodiplostomum ptychocheilus into fathead minnows. Instead, I suggest that the mechanism behind the decline in transmission is the species-specific modulation of transmission pathways as host biodiversity increases.en_US
dc.identifier.urihttps://hdl.handle.net/10133/5632
dc.language.isoen_USen_US
dc.proquest.subject0718en_US
dc.proquest.subject0306en_US
dc.proquest.subject0472en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Scienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectbiodiversityen_US
dc.subjectecologyen_US
dc.subjecthost-parasite interactionsen_US
dc.subjectparasitologyen_US
dc.subjecttrematode parasiteen_US
dc.subjectParasitology -- Researchen_US
dc.subjectParasitology -- Research -- Alberta, Southernen_US
dc.subjectFishes -- Parasites -- Alberta, Southernen_US
dc.subjectFishes -- Parasites -- LIfe cycles -- Alberta, Southernen_US
dc.subjectFathead minnow -- Research -- Alberta, Southernen_US
dc.subjectParasites -- Life cycles -- Research -- Alberta, Southernen_US
dc.subjectTrematoda -- Life cycles -- Research -- Alberta, Southernen_US
dc.subjectBiodiversity -- Research -- Alberta, Southernen_US
dc.subjectHost-parasite relationshipsen_US
dc.subjectDissertations, Academicen_US
dc.titleEffects of host community structure on parasite transmission and disease risken_US
dc.typeThesisen_US
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