The predatory response of Lepomis gibbosus to size and color among Chaoborus prey.

Show simple item record Rainey, Carrie en_US
dc.coverage.spatial Douglas Lake en_US
dc.coverage.spatial Lancaster Lake - Munro Twp. en_US
dc.coverage.spatial Black River en_US
dc.coverage.spatial Kleber Pond en_US
dc.coverage.spatial UMBS Campus en_US 2007-06-14T22:12:57Z 2007-06-14T22:12:57Z 1993 en_US
dc.description.abstract Biotic interactions such as predation influence the structure of freshwater communities. The predator-prey relationship between fish and zooplankton is one such interaction which has been widely studied. Size and color differences among prey items have been well documented as factors influencing predation. The purpose of our study was to examine the effects of size and color variability of zooplankton prey on the predatory response of fish. In order to study these relationships, we sued pumpkinseed (Lepomis gibbosus) and two zooplankton species which differed in size: Chaoborus punctipennis from Douglas Lake, Cheboygan County, Michigan, and Chaoborus flavicans from Lancaster Lake, Cheboygan County, Michigan. We dyed the Chaoborus species with Rotamin B in order to examine the effects of color. We measured the response times of the pumpkinseed to four individual prey types: large uncolored, large colored, small uncolored, and small colored. We also conducted six sets of selectivity trials in which the fish were given a choice between two Chaoborus types. The mean response times were compared using t-tests, and the results of the choice experiments were analyzed using X2 goodness-of-fit. We found, as expected, that pumpkinseed predatory response increases as size and pigmentation of prey increases. An understanding of how these predators affect the population composition of the zooplankton may give us much insight into the structure of freshwater communities. en_US
dc.format.extent 666887 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject General Ecology en_US
dc.subject.other INVERTEBRATES en_US
dc.subject.other ZOOPLANKTON en_US
dc.subject.other CHAOBORUS en_US
dc.subject.other FISHES en_US
dc.subject.other VERTEBRATES en_US
dc.subject.other LEPOMIS en_US
dc.subject.other PREDATION en_US
dc.subject.other PREY en_US
dc.subject.other SIZE en_US
dc.subject.other COLOR en_US
dc.subject.other COMPOSITION en_US
dc.title The predatory response of Lepomis gibbosus to size and color among Chaoborus prey. 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 en_US
dc.description.filedescription Description of 2913.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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