First evaluation of resistance to both a California OsHV-1 variant and a French OsHV-1 microvariant in Pacific oysters

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dc.contributor.authorDivilov, Konstantin
dc.contributor.authorSchoolfield, Blaine
dc.contributor.authorMorga, Benjamin
dc.contributor.authorDégremont, Lionel
dc.contributor.authorBurge, Colleen A.
dc.contributor.authorCortez, Daniel Mancilla
dc.contributor.authorFriedman, Carolyn S.
dc.contributor.authorFleener, Gary B.
dc.contributor.authorDumbauld, Brett R.
dc.contributor.authorLangdon, Chris
dc.date.accessioned2020-02-06T18:44:22Z
dc.date.available2020-02-06T18:44:22Z
dc.date.issued2019-12-12
dc.description.abstractBackground: Variants of the Ostreid herpesvirus 1 (OsHV-1) cause high losses of Pacific oysters globally, including in Tomales Bay, California, USA. A suite of new variants, the OsHV-1 microvariants (μvars), cause very high mortalities of Pacific oysters in major oyster-growing regions outside of the United States. There are currently no known Pacific oysters in the United States that are resistant to OsHV-1 as resistance has yet to be evaluated in these oysters. As part of an effort to begin genetic selection for resistance to OsHV-1, 71 families from the Molluscan Broodstock Program, a US West Coast Pacific oyster breeding program, were screened for survival after exposure to OsHV-1 in Tomales Bay. They were also tested in a quarantine laboratory in France where they were exposed to a French OsHV-1 microvariant using a plate assay, with survival recorded from three to seven days post-infection. Results: Significant heritability for survival were found for all time points in the plate assay and in the survival phenotype from a single mortality count in Tomales Bay. Genetic correlations between survival against the French OsHV-1 μvar in the plate assay and the Tomales Bay variant in the field trait were weak or non-significant. Conclusions: Future breeding efforts will seek to validate the potential of genetic improvement for survival to OsHV-1 through selection using the Molluscan Broodstock Program oysters. The lack of a strong correlation in survival between OsHV-1 variants under this study’s exposure conditions may require independent selection pressure for survival to each variant in order to make simultaneous genetic gains in resistance.en_US
dc.description.sponsorshipFunding for this study and KD, as well as partial funding for CAB and CL, was provided by the USDA-ARS project 2072–31000-004-00D “Genetic Improvement of Oyster Stocks for the Pacific Northwest”. The Molluscan Broodstock Program is funded by an appropriation from the Legislature of the State of Oregon.en_US
dc.description.urihttps://bmcgenet.biomedcentral.com/articles/10.1186/s12863-019-0791-3en_US
dc.format.extent9 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2vjkq-wudw
dc.identifier.citationDivilov, Konstantin; Schoolfield, Blaine; Morga, Benjamin; Dégremont, Lionel; Burge, Colleen A.; Cortez, Daniel Mancilla; Friedman, Carolyn S.; Fleener, Gary B.; Dumbauld, Brett R.; Langdon, Chris; First evaluation of resistance to both a California OsHV-1 variant and a French OsHV-1 microvariant in Pacific oysters; BMC Genetics volume 20, Article number: 96 (2019); https://bmcgenet.biomedcentral.com/articles/10.1186/s12863-019-0791-3en_US
dc.identifier.urihttps://doi.org/10.1186/s12863-019-0791-3
dc.identifier.urihttp://hdl.handle.net/11603/17231
dc.language.isoen_USen_US
dc.publisherBioMed Centralen_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.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleFirst evaluation of resistance to both a California OsHV-1 variant and a French OsHV-1 microvariant in Pacific oystersen_US
dc.typeTexten_US

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