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ScottBorsum,MelanieFuoco,GulnihalOzbay
DelawareStateUniversity,Dover,DE
BaselineMeasurementsofEasternOyster
Populations(Crassostreavirginica)inDelawareInlandBays
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OysterBenefits
Ecological• Biologicalengineer• Decreasewaterturbidity• Algaepopulationcontrol• Nutrientsequestration• Benthicnutrientdeposits• Carbonsink• Increasediversity
Societal/Economical• Stormsurgeprotection
• Coastalsedimentstabilization
• Waterfiltration
• Healthyproteinsource• Createsjobs• Increasefishabundance
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DelawareInlandBays• 343acresapprovedtobe
leased.
• Wildpopulationofoystersis
poorlystudied.
• Goalistocollectbaselinepopulationdatapriorto
commercialaquaculture.
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Objectives
• MeasurethegeneticdiversityofnativepopulationsinLAB
andIR+RB,atspecificmarkers,tosearchforsignaturesof
hatcherylines.
• Measurecurrentabundanceanddistributionofnative
oystersthroughouttheDIBs
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Spat Collectors Design
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SpatCollectors
• 4locationsperbay;3spatcollectorsateachsite.
• Identifylocationswheresettlementisoccurring.
• Usewildsetspatforgeneticmicrosatelliteanalysis.
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SpatCollectionResults
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MicrosatelliteAnalysis• Regionsamplifiedareshort
basepairrepeats.
• Highlypolymorphicregionsare
requiredtocomparefrequency
differences.
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Surveys
• RipRapusingswathmethods
toacquiredensities.
• Quantifyphysicalcharacteristics
• Goalistodeveloprepeatablemethodsformonitoring.
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BaselineandLongTermData
• Longtermenvironmentaldatais
receivinglessfunding,yet
contributingmoreto
developmentofpolicyand
ecologicaltheories(Hughes
2017).
• Essentialknowledgeinordertomitigateeffectivelyto
environmentalchange.
• Requirecleargoals,robustdesign,evaluations,andrigorous
documentation.
• Worksbestwithinclusive
participationandcollaboration
bythescientificcommunity.
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NextSteps
• Completesurveysandtestnewprimercandidatesforhighly
polymorphicregions.
• Get50oystersfromhatcherystrainsthathavebeenusedfor
restorationinAssawomanBay.
• Gather,combine,andinterpretwaterqualitytobeginto
addressfactorsdrivingdistributionofoysters
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ImplicationsBetterinformmanagers,policy
makers,andconservationgroups
abouttheiroysternatural
resources.
Understandimpactsofhatchery
linestolocaloysterpopulation
dynamics
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