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Aggressive interactions and food competition in relation to species displacement among crayfish of the genus Orconectes.

dc.contributor.authorIsrael, Mary Muen_US
dc.coverage.spatialPigeon Riveren_US
dc.date.accessioned2007-06-14T22:09:57Z
dc.date.available2007-06-14T22:09:57Z
dc.date.issued1993en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54453
dc.description.abstractInteractive aggression among crayfish was investigated in the stream habitat. Orconectes rusticus and O. propinquus were observed during three nights in the Pigeon River at point sources of food competition. They freely approached a circular arena produced by the diffuse illumination of a flashlight in a glass-bottomed bucket. Aggressive actions by any crayfish to another within the arena were recorded and counted. O. rusticus was observed to be more aggressive toward O. propinquus than toward other O. rusticus by average aggressive acts per interaction. O. propinquus dealt the fewest aggressive acts; O. propinquus was not observed aggressing against conspecifics. White light from the flashlight and the full moon may have deterred O. virilis from approaching the arena. O. rusticus was the most aggressive of the two species observed in the field.en_US
dc.format.extent318494 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.subjectAnimal Behavioren_US
dc.subject.otherAQUATICen_US
dc.subject.otherINVERTEBRATESen_US
dc.subject.otherCRAYFISHESen_US
dc.subject.otherORCONECTESen_US
dc.subject.otherCOMPETITIONen_US
dc.subject.otherINTERSPECIFICen_US
dc.subject.otherAGGRESSIONen_US
dc.subject.otherBEHAVIORen_US
dc.subject.otherFOODen_US
dc.subject.otherDISPLACEMENTen_US
dc.subject.otherSPECIESen_US
dc.titleAggressive interactions and food competition in relation to species displacement among crayfish of the genus Orconectes.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/2027.42/54453/1/2891.pdfen_US
dc.description.filedescriptionDescription of 2891.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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