Download - NSA MV Oyster 2008
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Characterizing disease resistance in native oysters
that have experienced disease pressure
Steven Roberts, Roxanna Smolowitz, Rick Karney
Northeastern Regional Aquaculture Center
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MVineyardflickr | cpurrin1
Disease Resistance ?
Roxannna SmolowitzRick Karney
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Market size
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apoptosis
protease
Without Pressure
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n.d.
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n.d.
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High Mobility Group Protein
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Apoptosis – BCL-X
• Resistant oyster strains could downregulate apoptosis suppression
• Allowing for increased apoptosis
• Decreasing number of cells available for Perkinsus proliferation
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Schematic
Resistant Wild-type
BCL-X BCL-X
Text
Parasite
Hemocytes
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causative or associative?
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Markers ?Does it matter?
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Summary
• Offspring of survivors of heavy disease pressure are more tolerant to disease
• Mechanisms involved in host responses to P. marinus include proteases, apoptosis, and molecule signaling
• Careful selection of broodstock (potentially aided by markers) can benefit aquaculture and conservation efforts
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Future
• Increased analysis on current data set
• Analyze gene expression patterns in different locations under different diseased pressure
• Application of markers
• Could assignment be made via gene expression?
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