Pacific oysters are a sink and a potential source of the eelgrass pathogen, Labyrinthula zosterae

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dc.contributor.authorAgnew, M Victoria
dc.contributor.authorGroner, Maya L.
dc.contributor.authorEisenlord, Morgan E.
dc.contributor.authorFriedman, Carolyn S.
dc.contributor.authorBurge, Colleen
dc.date.accessioned2023-01-09T15:21:44Z
dc.date.available2023-01-09T15:21:44Z
dc.date.issued2022-12-15
dc.description.abstractOyster aquaculture and seagrasses often co-occur and are each vital to the ecological and economic value of coastal ecosystems. Global declines in seagrasses, including Zostera mari - na, have recently been observed in association with multiple factors, including infection with diseases such as seagrass wasting disease (SWD), caused by the protist Labyrinthula zosterae. Protection of seagrasses has led to restrictions on oyster aquaculture due to perceived negative impacts on seagrass beds; however, positive impacts may also occur. An important aquaculture species, the Pacific oyster Crassostrea gigas, can filter L. zosterae from the water, potentially re - ducing pathogen transmission, although oysters may vector infection if they accumulate and re - lease live L. zosterae into the water. We investigated whether oyster presence decreases lesion severity and infection intensity in eelgrass, or acts as a vector of L. zosterae, via laboratory and field experiments. In the laboratory, oysters and eelgrass were exposed to L. zosterae for 24 h and kept at 11°C or 18°C for 13 d. In the field, eelgrass ramets were deployed with and without oysters for 28 d adjacent to eelgrass known to have SWD. In the laboratory experiment, the presence of oysters significantly decreased lesion severity and infection intensity, but oysters previously ex - posed to L. zosterae did transmit the pathogen to naïve eelgrass. Temperature did not affect oyster ability to mitigate SWD; however, increased temperature significantly increased lesion severity. Oysters had no effect on SWD in the field. Further research is needed regarding the potential for oysters to vector L. zosterae and to quantify when oysters reduce SWD in the field.en_US
dc.description.sponsorshipThank you to Washington Sea Grant no. NA18OAR4170095 for funding this research, along with the Institute of Marine and Environmental Technology for providing graduate student support for M.V.A. Thank you to our co-PIs Meg Chadsey, Drew Harvell, and Brady Blake, along with the oyster farms which provided us with oysters. We also thank Bryanda Wippel, Megan Swanger, Sukanya Dayal, Mariah Kachmar, Jennifer Akanoh, Kurt Sato, Ashley Carter, Zoey Burge, and the students of UW-FHL Bio 533 Summer 2019 for their technical support in this research.en_US
dc.description.urihttps://www.int-res.com/abstracts/aei/v14/p295-307/en_US
dc.format.extent13 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2kjsx-ntez
dc.identifier.citationAgnew MV, Groner ML, Eisenlord ME, Friedman CS, Burge CA (2022) Pacific oysters are a sink and a potential source of the eelgrass pathogen, Labyrinthula zosterae. Aquacult Environ Interact 14:295-307. https://doi.org/10.3354/aei00446en_US
dc.identifier.urihttps://doi.org/10.3354/aei00446
dc.identifier.urihttp://hdl.handle.net/11603/26596
dc.language.isoen_USen_US
dc.publisherInter-Researchen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Department of Marine Biotechnology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.titlePacific oysters are a sink and a potential source of the eelgrass pathogen, Labyrinthula zosteraeen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-0404-1355en_US
dcterms.creatorhttps://orcid.org/0000-0002-9793-9801en_US

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