Lethal toxicity values (96 h LC50; mg Cd/L) for the test species were similar: Lepomis cyanellus, 11.52; Notropis lutrensis, 6.62; Pimephales promelus, 3.58. However the effects of cadmium concentration and exposure time on temperature tolerance varied between species. Neither cadmium concentration nor exposure time had a significant effect on the CTM of green sunfish. Both cadmium concentration and exposure time had a significant effect on the CTMs of red shiners and fathead minnows. By day 10 mean CTMs were 2.3 t- 4.5 C (red shiners) and 4.2 to 5.7 C (fathead minnows) lower than control CTM. These results suggest a potential problem in cadmium contaminated systems for high environmental temperatures to stress or kill fish.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc504077 |
| Date | 05 1900 |
| Creators | Carrier, Roxie |
| Contributors | Beitinger, Thomas L., Donahue, Manus J., Dickson, Kenneth L. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | viii, 57 leaves : ill., Text |
| Rights | Public, Carrier, Roxie, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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