An effect of the invasive Round Goby (Neogobius melanostomus) on the recruitment of unionid mussel Species at Risk (Bivalvia: Unionidae)

dc.contributor.advisorAckerman, Josef D.
dc.contributor.advisorMorris, Todd J.
dc.contributor.authorTremblay, Maude E. M.
dc.date.accessioned2013-01-02T16:50:54Z
dc.date.available2013-01-02T16:50:54Z
dc.date.copyright2012-12
dc.date.created2012-11-28
dc.date.issued2013-01-02
dc.degree.departmentDepartment of Integrative Biologyen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeIntegrative Biologyen_US
dc.description.abstractI investigated whether Neogobius melanostomus, an invader of biodiversity “hot-spots” in Ontario facilitates or inhibits unionid mussel recruitment by serving as a host or as a sink for their parasitic larvae (glochidia). Infestation and metamorphosis rates of four mussel Species at Risk (Epioblasma torulosa rangiana, Epioblasma triquetra, Lampsilis fasciola, and Villosa iris) and one common species (Actinonaias ligamentina) on N. melanostomus were compared to rates on known hosts in the laboratory. All species successfully infested N. melanostomus, but only E. triquetra, V. iris, and A. ligamentina successfully metamorphosed, albeit at low rates. Neogobius melanostomus collected from areas of unionid occurrence in the Grand and Sydenham rivers exhibited body burdens of 39.4% and 5.1%, respectively. Analyses indicate that N. melanostomus serves more as a sink for glochidia than as a host for unionids, thereby limiting recruitment, which is a novel way by which N. melanostomus is affecting native mussel species.en_US
dc.identifier.urihttp://hdl.handle.net/10214/5111
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectLaurentian Great Lakesen_US
dc.subjectinvasiveen_US
dc.subjectspecies at risken_US
dc.subjectUnionidaeen_US
dc.titleAn effect of the invasive Round Goby (Neogobius melanostomus) on the recruitment of unionid mussel Species at Risk (Bivalvia: Unionidae)en_US
dc.typeThesisen_US

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