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Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters?
 

Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters?

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Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters? presented at April 14th, 2014 Rhode Island Shellfish Management Plan Stakeholder meeting by R. ...

Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters? presented at April 14th, 2014 Rhode Island Shellfish Management Plan Stakeholder meeting by R. Smolowitz and D. Leavitt

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    Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters? Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters? Presentation Transcript

    • R. Smolowitz, D. Leavitt Could Diseases in Blue Mussels Affect Wild Populations and Commercial Culture in Rhode Island Waters? Figure 1: Recent worldwide increases in aquaculture production of blue mussel (Source: FAO FishStat ) Table 1: A summary of common diseases noted in the blue mussel Mytilus edulis. (From: FAO 2004)
    • Diseases have and continue to have devastating effects on cultured bivalves! We have a chance to get ahead of the curve. Table 1: A summary of common diseases noted in the blue mussel Mytilus edulis. (From: FAO 2004) Types of effects: Chronic Acute!
    • Trematode Disease is present in Blue Mussels from the NE US. Mussel gonadal tubules in the mantle contain numerous sporocysts with germinal balls and rediae (A). Normal appearing gonadal tubules are noted in one area of the mantle (B). An early infection: sporocysts are contained in the gonadal tubules and no inflammation is present in the tissues.
    • Microsporidial Disease of Blue Mussel in the NE US Steinhausia sp. infection of blue mussel eggs. The microsporidial parasite is shown in the remaining intact eggs (A). Gonadal tubules are destroyed and hemocytic inflammation is intermixed with egg debris and parasites Other host! Other host!
    • Specific Objectives: 1. Determination of prevalence and severity of mussel diseases in three sizes of wild and cultured stocks throughout Rhode Island 2. Identification of environmental and physiological parameters characteristic of each sample site and time. 3. Association of disease with physiological condition and/or environmental data. 4. Extension of information from the study via outreach activities. Determination of effect of these diseases on aquacultured stock! 1. Identification of diseases that need controls 2. Leading to management and detection methods for diseases of importance
    • Stake holder involvement: Sites for mussel collection: two aquaculture sites (Bill and Adam Silkes) two/three wild populations of mussels (Jeff Grant and others) RWU dock site Any location with a mortality event (please contact us!) Am. Mussel Harvester’s website
    • Drawing by Iris Churcher, Malaspina University-College Questions?