Laserfiche WebLink
30 <br /> 96-h LC50 icity of dieldrin approximately doubled for rainbow <br />Test Stage or Temp 95% CI trout and bluegills when temperatures were increased <br />organism wt (g) (C) (µg/L) from 2 ° to 13 °C and from 7 ° to 29 °C, respectively. <br /> Water hardness did not appear to affect toxicity to <br />Orconectes' M 21 740 fish or invertebrates. Dietary dieldrin significantly <br /> 680-1,200 altered several physiological and biochemical factors, <br /> including serum amino acid composition, adrenal and <br />Pteronarcys' YC2 15 0.5 thyroid function, ammonia detoxification, and phenyl- <br /> 0.4-0.7 keto acid metabolism. The ability to withstand stress <br /> was significantly reduced. Whole body residues in <br />Pteronarcella' YCl 15 0.5 treated fish were similar to those in wild fish. <br /> 0.4-0.7 <br />Claassenial YC2 15 0.6 DIFLUBENZURON <br /> 0.4-0.8 <br />Ischnura' J 24 12 Chemical Name: N-[[(4-Chlorophenyl)amino] carbonyl] <br /> -2,6-difluorobenzamide <br />Cutthroat trout' 1.1 9 6.0b <br /> 4.6-8.0 Alternate Names: Dimilin, TH-6040, PH-6040, OMS <br /> 1804, ENT-29054 <br />Rainbow trout' 1.4 13 1.2 <br /> 0.9-1.7 Principal Use: Insecticide <br />Goldfish' 1.0 18 1.8 Sample Description: Technical material, 95%1; wet- <br /> 1.2-2.8 table powder, 25%2 <br />Fathead minnow' 0.6 18 3.8 <br /> 3.1-4.6 SUMMARY OF ACUTE TOXICITY <br />Channel catfish' 1.4 18 4.5 96-h LC50 <br /> 2.5-7.9 Test Stage or Temp 95% Cl <br /> organism wt (g) (C) (mg/L) <br />Bluegill' 1.3 18 3.1 <br /> 2.1-4.6 G. pseudolimnaeus' M 12 0.030 <br /> <br />Largemouth bass' <br />2.5 <br />18 <br />3.5b 0.021-0.043 <br /> 2.7-4.5 Rainbow trout' 1.0 10 > 100 <br />Cutthroat trout' 1.3 8 12b Brook trout' 0.6 7 > 50 <br /> 11-14 <br /> Channel catfish' 2.0 22 > 100 <br />Channel catfish' 1.4 18 19 <br /> 13-27 Bluegill' 0.3 20 > 100 <br />Bluegill' <br />1.4 18 11 <br />9.3-13 <br />848-h EC50. <br />bTested in hard water, 162 ppm CaCO,. <br />Yellow perch' <br />Daphnia magna' <br />G. pseudolimnaeus' <br />NOTE: Dieldrin rapidly accumulates in invertebrates <br />from a few hundred to several thousand times the Chironomus' <br />exposure level in concentrations as low as 50 ng/L. <br />Plateau levels were reached within 3 days in Daphnia <br />and the residue half-life was 2.5 days. Although Cutthroat trout' <br />concentrations of 560 ag/L were not acutely toxic, <br />midge larvae were unable to survive beyond 14 days in <br />concentrations of 180 µg/L, and less than half were Rainbow trout' <br />able to complete metamorphosis at 5.6 µg/L. The tox- <br />0.6 12 >25 <br />I1 22 0.0168 <br /> 0.012-0.020 <br />M 12 0.025 <br /> 0.016-0.040 <br />I4 22 0.56a <br /> 0.47-0.67 <br />1.0 12 57 <br /> 48-67 <br />1.5 10 240 <br /> 201-286