Genetic variation was examined at 19 loci encoding enzymatic and general proteins Notropis lutrensis from the Brazos River in Texas. The thermal regime of the Brazos River below Possum Kingdom Reservoir is altered due to the release of water from the hypolimnion. Summer water temperatures fluctuate as much as 7^oC. Levels of heterozygosity at the malate dehydrogenase-2 locus were correlated with the degree of water temperature fluctuation at each locality. The isozymes from three homozygous patterns of supernatant malate dehydrogenase (Mdh-l, Mdh-2) exhibited different activities at different experimental temperatures.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc504175 |
| Date | 05 1900 |
| Creators | Richmond, M. Carol |
| Contributors | Zimmerman, Earl G., Fitzpatrick, Lloyd C., Stanford, Jack Arthur, 1947- |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | v, 43 leaves : ill., Text |
| Coverage | United States - Texas |
| Rights | Public, Richmond, M. Carol, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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