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

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dc.contributor.author Israel, Mary Mu en_US
dc.coverage.spatial Pigeon River en_US
dc.date.accessioned 2007-06-14T22:09:57Z
dc.date.available 2007-06-14T22:09:57Z
dc.date.issued 1993 en_US
dc.identifier.uri http://hdl.handle.net/2027.42/54453
dc.description.abstract Interactive 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.extent 318494 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject Animal Behavior en_US
dc.subject.other AQUATIC en_US
dc.subject.other INVERTEBRATES en_US
dc.subject.other CRAYFISHES en_US
dc.subject.other ORCONECTES en_US
dc.subject.other COMPETITION en_US
dc.subject.other INTERSPECIFIC en_US
dc.subject.other AGGRESSION en_US
dc.subject.other BEHAVIOR en_US
dc.subject.other FOOD en_US
dc.subject.other DISPLACEMENT en_US
dc.subject.other SPECIES en_US
dc.title Aggressive interactions and food competition in relation to species displacement among crayfish of the genus Orconectes. en_US
dc.type Working Paper en_US
dc.subject.hlbsecondlevel Natural Resource and Environment en_US
dc.subject.hlbtoplevel Science en_US
dc.contributor.affiliationum Biological Station, University of Michigan en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl http://deepblue.lib.umich.edu/bitstream/2027.42/54453/1/2891.pdf en_US
dc.description.filedescription Description of 2891.pdf : Access restricted to on-site users at the U-M Biological Station. en_US
dc.owningcollname Biological Station, University of Michigan (UMBS)
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