Acute Toxicity of Ammonia and Nitrite to Yellow Perch, Perca flavescens.

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dc.contributor.advisor Dr. Thomas Losordo, Committee Member en_US
dc.contributor.advisor Dr. Cavell Brownie, Committee Member en_US
dc.contributor.advisor Dr. Harry V. Daniels, Committee Member en_US
dc.contributor.author Espey, James Lee en_US
dc.date.accessioned 2010-04-02T18:18:43Z
dc.date.available 2010-04-02T18:18:43Z
dc.date.issued 2003-07-30 en_US
dc.identifier.other etd-07272003-163356 en_US
dc.identifier.uri http://www.lib.ncsu.edu/resolver/1840.16/2910
dc.description.abstract A series of static toxicity tests were conducted to determine the tolerance of yellow perch to ammonia and nitrite on larvae, juvenile and adult fish. Toxicity tests on adults were conducted at 18, 22, and 25 C. The tests on larvae showed highly varible results and were ultimately inconclusive. The 96h LC50 for ammonia and nitrite to juveniles were 0.77 mg/L as NH3-N and 78.24 mg/l as NO2-N, respectively. Adult and juvenile yellow perch had similiar tolerance levels. lc50 values for ammonia and nitrite varied with temperature and were 0.64 mg/l as NH3-N and 65.8 mg/l as NO2-N, respectively at 22 C. Lower water temeprature reduced the toxicity of ammonia and nitrite to yellow perch adults significantly. At 18 C, the LC50 values and nitrite were 59% higher (1.02 mg/l as NH3-N) and 34% higher (88.5 mg/l as NO2-N), respectively than the values at 22 C. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject perca en_US
dc.subject perca flavescens en_US
dc.subject ammonia en_US
dc.subject nitrite en_US
dc.subject aquaculture en_US
dc.title Acute Toxicity of Ammonia and Nitrite to Yellow Perch, Perca flavescens. en_US
dc.degree.name MS en_US
dc.degree.level thesis en_US
dc.degree.discipline Zoology en_US


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