Show simple item record Robb, Tonia en_US 2007-06-01T19:20:53Z 2007-06-01T19:20:53Z 2000-09-01T00:00:00Z en_US
dc.description.abstract This study focused on the influence of body size of teleosts on tolerance and the implications in a predator and prey relationship. Body size limitations are evident in many predator and prey relationships and as a result there is the potential for variation in tolerance to hypoxia. It was predicted that prey would have a greater tolerance of hypoxia than its piscine predator. I suggested the difference in body size would account for this difference as some physiological evidence was found to supports this. Three physiological parameters, expected to increase in response to a reduction on dissolved oxygen, were measured in response to hypoxia and were used to determine tolerance. All of the physiological variables measured suggested a size sensitive relationship in which the smaller prey (fathead minnow, Pimephales promelas') was better able to withstand hypoxic conditions than the predatory yellow perch ('Perca flavescens'). Based on this size-sensitive relationship of tolerance to hypoxia, I developed a theoretical model based on the ideal free distribution to determine the distribution of a predator and prey population in response to fluctuating dissolved oxygen levels. (Abstract shortened by UMI.) en_US
dc.format.extent 6760135 bytes
dc.format.extent 184 bytes
dc.format.mimetype application/pdf
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dc.language en en_US
dc.language.iso en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title The role of hypoxia in a fresh water environment, the ecological implications in a piscine predator-prey relationship en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US Zoology en_US Master of Science (M.Sc.) en_US

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