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Differences in behavioral responses of an invasive crayfish (O. rusticus), and a native crayfish (O. virilis), in the presence of a large predator (Micropterus dolomieui).

dc.contributor.authorHuntington, David R.en_US
dc.coverage.spatialBurt Lakeen_US
dc.coverage.spatialDouglas Lakeen_US
dc.coverage.spatialUMBS Campusen_US
dc.date.accessioned2007-06-14T23:40:06Z
dc.date.available2007-06-14T23:40:06Z
dc.date.issued2006en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/55103
dc.description.abstractThe native crayfish species Orconectes virilis is being displaced significantly by the introduced species Oroconectes rusticus. The mechanism of this displacement is of importance to ecologists predicting the future effects of O. rusticus on native aquatic communities. In this study, individual crayfish of each species were placed in direct contact with a large predator. Differences in behavioral responses including time sppent in shelter vs. not, time spent in threat posture, number of strikes by crayfish, and number of strikes by bass were recorded. Data revealed no significant difference in the time spent in shelter by either species. Likewise, no differences in time spent in threat posture, or number of strikes by either crayfish or bass was observed based on the data collected. The native O. virilis suffered 6 fatalities throughout the duration of the study, while O. rusticus suffered only 1 fatality. These findings suggest that differences in behavioral response to the presence of a predator are not a strong mechanism of displacement.en_US
dc.format.extent266272 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.subjectResearch Experience for Teachersen_US
dc.subject.otherINTRODUCEDen_US
dc.subject.otherCRAYFISHen_US
dc.subject.otherINVERTEBRATESen_US
dc.subject.otherVERTEBRATESen_US
dc.subject.otherCOMPETITIONen_US
dc.subject.otherPREDATIONen_US
dc.subject.otherCHEMICALBEHAVIORen_US
dc.subject.otherORIENTATIONen_US
dc.subject.otherAGGRESSTIONen_US
dc.titleDifferences in behavioral responses of an invasive crayfish (O. rusticus), and a native crayfish (O. virilis), in the presence of a large predator (Micropterus dolomieui).en_US
dc.typeWorking Paperen_US
dc.subject.hlbsecondlevelNatural Resource and Environmenten_US
dc.subject.hlbtoplevelScienceen_US
dc.contributor.affiliationumBiological Station, University of Michiganen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/55103/1/3548.pdfen_US
dc.description.filedescriptionDescription of 3548.pdf : Access restricted to on-site users at the U-M Biological Station.en_US
dc.owningcollnameBiological Station, University of Michigan (UMBS)


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