ALTERNATIVE MIGRATORY PATHWAYS OF JUVENILE STRIPED BASS IN THE PATUXENT RIVER ESTUARY, MARYLAND

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dc.contributor.advisorSecor, David H.en_US
dc.contributor.authorConroy, Christian Williamen_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2012-10-11T05:40:36Z
dc.date.available2012-10-11T05:40:36Z
dc.date.issued2012en_US
dc.description.abstractAlthough highly migratory striped bass <italic>Morone saxatilis</italic> utilize spatially diverse and dynamic estuarine systems as nurseries, early dispersal behaviors have remained largely unknown. Using otolith chemistry, we identified consistent migratory and residence behaviors in juvenile striped bass year classes. Migrants were further separated by size and age into contingents that shared similar ontogenetic dispersal thresholds. We identified a small group of larval dispersers that moved to mesohaline waters prior to reaching 6 mm. Resident juveniles experienced better early growth that migrants. Small migrants had the lowest growth rates prior to dispersal, but afterward showed enhanced growth rate. Positive growth inflections were also observed for a group of migrants that reinvaded freshwater at larger sizes. Striped bass migration seems to be controlled by individual growth trajectories, where movement is driven by poor growth in the natal habitat.en_US
dc.identifier.urihttp://hdl.handle.net/1903/13142
dc.subject.pqcontrolledEcologyen_US
dc.subject.pqcontrolledFisheries and aquatic sciencesen_US
dc.subject.pqcontrolledBiologyen_US
dc.subject.pquncontrolledearly life history ontogenyen_US
dc.subject.pquncontrolledestuarineen_US
dc.subject.pquncontrolledmorone saxatilisen_US
dc.subject.pquncontrolledotolithen_US
dc.subject.pquncontrolledpartial migrationen_US
dc.subject.pquncontrolledstriped bassen_US
dc.titleALTERNATIVE MIGRATORY PATHWAYS OF JUVENILE STRIPED BASS IN THE PATUXENT RIVER ESTUARY, MARYLANDen_US
dc.typeThesisen_US

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