An investigation into the growth rates of northern pike, Esox lucius, in Wildwood Lake.

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dc.contributor.author Nellis, Michael en_US
dc.contributor.author Dziadosz, Mark en_US
dc.coverage.spatial Wildwood Lake en_US
dc.date.accessioned 2007-06-14T23:04:23Z
dc.date.available 2007-06-14T23:04:23Z
dc.date.issued 1999 en_US
dc.identifier.uri http://hdl.handle.net/2027.42/54845
dc.description.abstract We conducted a two week study on the age and growth rate of the northern pike, Esox lucius, population in Wildwood Lake, a very shallow and eutrophic lake in Wolverine, Michigan. Six pike were caught in an experimental gill net and their standard lengths were recorded. They were then aged using the left cleithral bone and also by scales. Five out of the six pike sampled showed a stunted growth pattern, below the average length range for their age in a normal population. We investigated into the possible reasons as to why this is occurring and discovered several possible factors. We found that the conditions in the lake during the summer months are extremely inhospitable to pike. Where the dissolved oxygen levels are tolerable (above 3.0 g/ml), the water temperature is in the zone of resistance (27.5 C), and where the water temperature is tolerable (below 25 C), the dissolved oxygen levels were near lethal. Therefore, the summer habitat available to the pike is restricted by warm water temperatures in the epilimnion and anoxic bottom waters. Furthermore, competition among the predatory fish in the lake has lowered the amount of possible prey items available, which can lead to lower energy available for growth. en_US
dc.format.extent 563761 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject Fishes en_US
dc.subject.other BASS en_US
dc.subject.other MICROPTERUS en_US
dc.subject.other COMPETITION en_US
dc.subject.other SEINES en_US
dc.subject.other TRAPS en_US
dc.subject.other NETS en_US
dc.subject.other PHYTOPLANKTON en_US
dc.subject.other WATER en_US
dc.subject.other DEPTH en_US
dc.subject.other GROWTH en_US
dc.subject.other RATE en_US
dc.subject.other EUTROPHIC en_US
dc.title An investigation into the growth rates of northern pike, Esox lucius, in Wildwood Lake. 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/2027.42/54845/1/3286.pdf en_US
dc.description.filedescription Description of 3286.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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