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                    U.S. DEPARTMENT OF AGRICULTURE
 Forage Seed and Cereal Research Unit: Corvallis, OR
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Brett R Dumbauld    Ecologist 3450 SW Campus WayCorvallis, OR 97331(541) 867-0191
 The West coast shellfish culture industry represents oyster, clam and mussel growers from Alaska to California and generates an estimated $100 million dollars in gross annual sales. Nevertheless, domestic production does not meet national demand and this trade imbalance is expected to grow. Oysters are farmed intensively on the west coast using a number of techniques like longlines and represent about 60% of the total value of farmed shellfish product.  Oyster Floats, Washington State
 ProjectsImproving the Sustainability and Productivity of Shellfish Culture in Pacific EstuariesIn-House Appropriated (D)Accession Number:437681Identifying Genetic Factors Associated with the Expression and Regulation of Economically Important Traits in Cultured Pacific OystersNon-Assistance Cooperative Agreement (S)Accession Number:437220  Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Evaluating recent shifts in long-term trajectories of burrowing shrimp in two US west coast estuaries-(Abstract Only)Relationship between a parasite, their ghost shrimp host, and sturgeon in US west coast estuaries-(Abstract Only)Landscape-scale assessment of nekton production in channel-fringing habitats provided by eelgrass and oyster aquaculture-(Abstract Only)Monitoring recent shifts in burrowing shrimp populations in coastal estuaries: are they new phenomena and should a shellfish grower be concerned?-(Abstract Only)Multi-decade changes in the condition index of adult Pacific oysters (Crassostrea gigas) in response to climate in a US west coast estuary-(Peer Reviewed Journal) Dumbauld, B.R., Du, X., Hunsicker, M., Forster, Z. 2023. Multi-decade changes in the condition index of adult Pacific oysters (Crassostrea gigas) in response to climate in a US west coast estuary. Journal of Sea Research. 193. Article 102383. https://doi.org/10.1016/j.seares.2023.102383.Predicted changes in seagrass cover and distribution in the face of sea level rise: Implications for bivalve aquaculture in a US West Coast estuary-(Peer Reviewed Journal) Dumbauld, B.R., Graham, E.R., McCoy, L.M., Lewis, N. 2022. Predicted changes in seagrass cover and distribution in the face of sea level rise: Implications for bivalve aquaculture in a US West Coast estuary. Estuaries and Coasts - Journal of the Estuarine Research Federation. https://doi.org/10.1007/s12237-022-01060-2.Genetic improvement of survival in Pacific oysters to the Tomales Bay strain of OsHV-1 over two cycles of selection-(Peer Reviewed Journal) Divilov, K., Schoolfield, B., Cortez, D.M., Wang, X., Fleener, G.B., Jin, L., Dumbauld, B.R., Langdon, C. 2021. Genetic improvement of survival in Pacific oysters to the Tomales Bay strain of OsHV-1 over two cycles of selection. Aquaculture. 543. Article 737020. https://doi.org/10.1016/j.aquaculture.2021.737020.A comparison of juvenile dungeness crab (Metacarcinus magister) habitat provided by contemporary oyster aquaculture versus historical native oyster habitat in a U.S. West Coast estuary-(Peer Reviewed Journal) Dumbauld, B.R., Murphy, J., McCoy, L., Lewis, N. 2021. A comparison of juvenile Dungeness crab (Metacarcinus magister) produced in current oyster aquaculture versus historical native oyster habitat in a U.S. West Coast estuary. Journal of Shellfish Research. 40(1):161-175. https://doi.org/10.2983/035.040.0116.Differential mortality and high viral load in naive Pacific oyster families exposed to OsHV-1 suggests tolerance rather than resistance to infection-(Peer Reviewed Journal) Agnew, M., Friedman, C.S., Langdon, C., Konstantin, D., Schoofield, B., Morga, B., Degremont, L., Dhar, A.K., Kirkland, P., Dumbauld, B.R., Burge, C.A. 2020. Differential mortality and high viral load in naive Pacific oyster families exposed to OsHV-1 suggests tolerance rather than resistance to infection. Journal of Pathogens. 9(12):1057. https://doi.org/10.3390/pathogens9121057.Estimating long-term trends in population declines of two ecosystem engineering burrowing shrimps in Pacific Northwest (USA) estuaries-(Peer Reviewed Journal) Dumbauld, B.R., McCoy, L.M., Dewitt, T.H., Chapman, J.W. 2021. Estimating long-term trends in population declines of two ecosystem engineering burrowing shrimps in Pacific Northwest (USA) estuaries. Hydrobiologia. 848. 993-1013. https://doi.org/10.1007/s10750-021-04544-7.On the edge: assessing fish habitat use across the boundary between Pacific oyster aquaculture and eelgrass in Willapa Bay, WA-(Peer Reviewed Journal) Muething, K.A., Tomas, F., Waldbusser, G., Dumbauld, B.R. 2020. On the edge: assessing fish habitat use across the boundary between Pacific oyster aquaculture and eelgrass in Willapa Bay, WA. Aquaculture Environment Interactions. 12:541-557. https://doi.org/10.3354/aei00381.First evaluation of resistance to both California and French OsHV-1 variants in Pacific oysters-(Peer Reviewed Journal) Divilov, K., Schoolfield, B., Morga, B., Degremont, L., Burge, C.A., Cortez, D.M., Friedman, C.S., Fleener, G., Dumbauld, B.R., Langdon, C. 2019. First evaluation of resistance to both California and French OsHV-1 variants in Pacific oysters. BMC Genetics. 20:96. https://doi.org/10.1186/s12863-019-0791-3.Nekton community composition and habitat use of an invasive seagrass and its native congener in Pacific Northwest USA estuaries-(Peer Reviewed Journal)Verification of ageing methods for the burrowing shrimp, Neotrypaea californiensis, using extractable lipofuscin and gastric mill cuticular features-(Peer Reviewed Journal) Bosley, K.M., Coleman, N., Dumbauld, B.R. 2019. Verification of ageing methods for the burrowing shrimp, Neotrypaea californiensis, using extractable lipofuscin and gastric mill cuticular features. Journal of the Marine Biological Association of the United Kingdom. 99(7):1627-1638. https://doi.org/10.1017/S0025315419000742.Application of the extractable lipofuscin aging method to estimate mortality and population dynamics of the burrowing shrimp, Neotrypaea californiensis-(Peer Reviewed Journal) Bosley, K.M., Wainwright, T., Dumbauld, B.R. 2019. Application of the extractable lipofuscin aging method to estimate mortality and population dynamics of the burrowing shrimp, Neotrypaea californiensis. Estuarine, Coastal and Shelf Science. 219:33-44. https://doi.org/10.1016/j.ecss.2019.01.015.Recruitment ecology of burrowing shrimps in US Pacific coast estuaries-(Peer Reviewed Journal) Dumbauld, B.R., Bosley, K. 2018. Recruitment ecology of burrowing shrimps in US Pacific coast estuaries. Estuaries and Coasts - Journal of the Estuarine Research Federation. https://doi.org/10.1007/s12237-018-0397-4.Energetic requirements of green sturgeon (Acipenser medirostris) feeding on burrowing shrimp (Neotrypaea californiensis) in estuaries: importance of temperature, reproductive investment, and residence time-(Peer Reviewed Journal) Borin, J., Moser, M., Hansen, A., Beauchamp, D., Corbett, S., Dumbauld, B.R., Pruitt, C., Ruesink, J., Donoghue, C. 2017. Energetic requirements of green sturgeon (Acipenser medirostris) feeding on burrowing shrimp (Neotrypaea californiensis) in estuaries: importance of temperature, reproductive investment, and residence time. Environmental Biology of Fishes. 100:1561-1573. https://www.doi.org/10.1007/s10641-017-0665-3.No evidence that the introduced parasite Orthione griffenis Markham, 2004 causes sex change or differential mortality in the native mud shrimp, Upogebia pugettensis (Dana, 1852)-(Peer Reviewed Journal) Asson, D., Chapman, J.W., Dumbauld, B.R. 2017. No evidence that the introduced parasite Orthione griffenis Markham, 2004 causes sex change or differential mortality in the native mud shrimp, Upogebia pugettensis (Dana, 1852). Aquatic Invasions. 12(2):213-224. https://doi.org/10.3391/ai.2017.12.2.09.Identification of burrowing shrimp food sources along an estuarine gradient using fatty acid analysis and stable isotope ratios-(Peer Reviewed Journal) Bosley, K., Copeman, L., Dumbauld, B.R., Bosley, K. 2017. Identification of burrowing shrimp food sources along an estuarine gradient using fatty acid analysis and stable isotope ratios. Estuaries and Coasts - Journal of the Estuarine Research Federation. 40:1113-1130.The effect of oyster aquaculture on seagrass (Zostera marina) at the estuarine landscape scale in Willapa Bay, Washington (USA)-(Peer Reviewed Journal) Dumbauld, B.R., Mccoy, L.M. 2015. The effect of oyster aquaculture on seagrass (Zostera marina) at the estuarine landscape scale in Willapa Bay, Washington (USA). Aquaculture Environment Interactions. 7:29-47.Isolation and characterization of novel microsatellite loci in two species of burrowing shrimp Neotrypaea californiensis and Upogebia pugettensis-(Peer Reviewed Journal) Dumbauld, B.R., Mercer, D.M., Camara, M.D. 2014. Isolation and characterization of novel microsatellite loci in two species of burrowing shrimp Neotrypaea californiensis and Upogebia pugettensis. Conservation Genetics Resources. 9(2):353-356.Historical ecology with real numbers: Past and present extent and biomass of an imperilled estuarine habitat-(Peer Reviewed Journal) Zu Ermgassen, P.S., Spalding, M.D., Blake, B., Coen, L.D., Dumbauld, B.R., Geiger, S., Grabowski, J.H., Grizzle, R., Luckenbach, M., Mcgraw, K., Rodney, W., Ruesink, J.L., Powers, S.P., Brumbaugh, R. 2012. Historical ecology with real numbers: Past and present extent and biomass of an imperilled estuarine habitat. Proceedings of the Royal Society of London: Biological Sciences. 279:3393-3400.An introduced Asian parasite threatens northeastern Pacific estuarine ecosystems-(Peer Reviewed Journal) Chapman, J.W., Dumbauld, B.R., Itani, G., Markham, J.C. 2012. An introduced Asian parasite threatens northeastern Pacific estuarine ecosystems. Biological Invasions. 14:1221-1236.The Willapa Bay Oyster Reserves in Washington State: Fishery collapse, creating a sustainable replacement, and the potential for habitat conservation and restoration-(Peer Reviewed Journal) Dumbauld, B.R., Kauffman, B.E., Trimble, A.C., Ruesink, J.L. 2011. The Willapa Bay Oyster Reserves in Washington State: Fishery collapse, creating a sustainable replacement, and the potential for habitat conservation and restoration. Journal of Shellfish Research. 30:71-83.Expanding shellfish aquaculture: A review of the ecological services provided by and impacts of native and cultured bivalves in shellfish dominated ecosystems-(Book / Chapter) Coen, L.D., Dumbauld, B.R., Judge, M.L. 2011. Expanding shellfish aquaculture: A review of the ecological services provided by and impacts of native and cultured bivalves in shellfish dominated ecosystems. In: Shumway, S.E. editor. Shellfish Aquaculture and the Environment. Hoboken, NJ: Wiley-Blackwell. p. 239-318.Factors preventing the recovery of a historically overexploited shellfish species, Ostrea conchaphila-(Peer Reviewed Journal) Trimble, A.C., Ruesink, J.L., Dumbauld, B.R. 2009. Factors preventing the recovery of a historically overexploited shellfish species, Ostrea conchaphila. Journal of Shellfish Research. 28(1):97-106.The ecological role of bivalve shellfish aquaculture in the estuarine environment: A review with application to oyster and clam culture in West Coast (USA) estuaries-(Peer Reviewed Journal) Dumbauld, B.R., Ruesink, J.L., Rumrill, S.S. 2009. The ecological role of bivalve shellfish aquaculture in the estuarine environment: A review with application to oyster and clam culture in West Coast (USA) estuaries. Aquaculture. 290: 196-223.Oysters and aquaculture practices affect eelgrass density and productivity in a Pacific Northwest estuary-(Peer Reviewed Journal) Tallis, H.M., Ruesink, J.L., Dumbauld, B.R., Hacker, S., Wisehart, L.M. 2009. Oysters and aquaculture practices affect eelgrass density and productivity in a Pacific Northwest estuary. Journal of Shellfish Research. 28: 251-261.The Potential Use of Electricity to Control Burrowing Shrimp in Oyster Aquaculture Beds-(Peer Reviewed Journal) Dumbauld, B.R., Harlan, L. 2009. The Potential Use of Electricity to Control Burrowing Shrimp in Oyster Aquaculture Beds. North American Journal of Aquaculture. 71: 178-188.Do Sturgeon limit burrowing shrimp populations in Pacific Northwest estuaries?-(Peer Reviewed Journal) Dumbauld, B.R., Holden, D., Langness, O. 2008. Do Sturgeon limit burrowing shrimp populations in Pacific Northwest estuaries?. Environmental Biology of Fishes.10.1007/s10641-008-9333-yPOPULATION STRUCTURE AND ENERGETICS OF THE BOPRYID ISOPOD PARASITE ORTHIONE GRIFFENIS IN MUD SHRIMP UPOGEBIA PUGETTENSIS-(Peer Reviewed Journal) Smith, A., Chapman, J., Dumbauld, B.R. 2008. Population structure and energetics of the bopryid isopod parasite orthione griffenis in mud shrimp upogebia pugettensis. Journal of Crustacean Biology.28(2)228-233.Bacterial abundance and aerobic microbial activity across natural and oyster aquaculture habitats during summer conditions in a northeastern Pacific estuary.-(Peer Reviewed Journal) Richardson, N.F., Ruesink, J.L., Naeem, S., Hacker, S.D., Tallis, H.M., Dumbauld, B.R., Wisehart, L.M. 2007. Bacterial abundance and aerobic microbial activity across natural and oyster aquaculture habitats during summer conditions in a northeastern Pacific estuary. Hydrobiologia.596:269-278.Importance of eelgrass early life history stages in response to oyster aquaculture disturbance-(Peer Reviewed Journal) Wisehart, L.M., Dumbauld, B.R., Ruesink, J.L., Hacker, S.D. 2007. Importance of eelgrass early life history stages in response to oyster aquaculture disturbance. Marine Ecology Progress Series.344:71-80.Bioenergetics modeling to investigate habitat use by the non-indigenous crab, Carcinus maenas, in Willapa Bay, Washington, USA-(Peer Reviewed Journal) Mcdonald, P., Holsman, K.K., Beauchamp, B.R., Dumbauld, B.R., Armstrong, D.A. 2007. Bioenergetics modeling to investigate habitat use by the non-indigenous crab, Carcinus maenas, in Willapa Bay, Washington, USA. Estuaries and Coasts - Journal of the Estuarine Research Federation.29(6B):1132-1149.A PRELIMINARY LOOK AT THE POTENTIAL FOR USING A PARASITIC ISOPOD FOR AUGMENTATIVE BIOLOGICAL CONTROL OF ITS BURROWING SHRIMP HOST-(Abstract Only) Chapman, J.C., Dumbauld, B.R., Smith, A. 2005. A preliminary look at the potential for using a parasitic isopod for augmentative biological control of its burrowing shrimp host. Annual Meeting of the Pacific Coast Shellfish Growers Association, September 26-29,2005, Hood River, OR.ASSESSING THE POTENTIAL FOR AUGMENTATIVE BIOLOGICAL CONTROL OF BURROWING SHRIMP IN ESTUARINE OYSTER AQUACULTURE-(Abstract Only) Dumbauld, B.R., Chapman, J., Kuris, A., Ashley, E., Heerhartz, S., Markham, J., Torchin, M. 2005. Assessing the potential for augmentative biological control of burrowing shrimp in estuarine oyster aquaculture. Meeting Abstract.  ARS News ArticlesNo news articles listed for this employee.


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