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dc.contributor.authorAllan, Brianen_US
dc.coverage.spatialCarp Creeken_US
dc.date.accessioned2007-06-14T22:52:08Z
dc.date.available2007-06-14T22:52:08Z
dc.date.issued1998en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54756
dc.description.abstractThe purpose of this study was to investigate if the amphipod, Gammarus pseudolimnaeus, feeds preferentially upon fresh vs. senescent leaves of four species of plant occurring in its habitat. The four species of plant used in this experiment were: Alnus rugosa, Caltha palustris, Lemna minor, and a bryophyte, Fontinalis hypnoides. The specimens used in this experiment were obtained from Carp Creek, in Cheboygan Co., Michigan. Sixty petri dishes were used, fifteen for each species of plant, each dish containing one samaple of senescent leaf tissue, and one sample of fresh leaf tissue. To each dish three G. pseudolimnaeus were added, totaling 25 mm of amphipod per dish. The amphipods were allowed to feed at room temperature for 36 hours, after the initial experiment performed in a refrigerator failed after 24 hours. With all four species, G. pseudolimnaeus demonstrated a statistically significant preference for senescent leaves over fresh leaves. For the three vascular plants, there is little doubt that the G. pseudolimnaeus consistently prefers the senescent leaves, and that this is the result of the presence of secondary metabolites. For the bryophyte, it is clear that the senescent leaves were preferred to some degree, but the cause of this preference is less evident. It is not yet well-documented if bryophytes produce their own secondary metabolites, or if they obtain them from microbial associations or mineral uptake. There is also evidence to indicate that there may be sufficient benefits for herbivores living in cold water to consume fresh bryophyte leaves in spite of risk associated with consuming toxins.en_US
dc.format.extent379411 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.subjectGeneral Ecologyen_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherBRYOPHYTESen_US
dc.subject.otherGAMMARUSen_US
dc.subject.otherINSECTSen_US
dc.subject.otherAQUATICen_US
dc.subject.otherINVERTEBRATESen_US
dc.subject.otherHERBIVORYen_US
dc.subject.otherSENESCENCEen_US
dc.subject.otherAMPHIPODSen_US
dc.subject.otherLEAFen_US
dc.subject.otherLITTERen_US
dc.subject.otherSHREDDERen_US
dc.subject.otherDETRITUSen_US
dc.subject.otherSECONDARYen_US
dc.subject.otherCOMPOUNDSen_US
dc.titleFeeding preferences of Gammarus pseudolimnaeus when presented with fresh and senescent leaves of associated riparian vegetation.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/2027.42/54756/1/3197.pdfen_US
dc.description.filedescriptionDescription of 3197.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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