7941

• UCREFRP Catalog Number: 7941
• Author: Johnson, W. W. and M. T. Finley
• Title: Editor
• USFW Year: Series
• USFW - Doc Type: 1980
• Copyright Material: NO

11

96-h LC50 NOTE: Eyed rainbow trout eggs were not sensitive to
Test Stage or Temp 95% Cl the 17% formulation of aminocarb; the 96-h LC50
organism wt (g) (C) (µglL) exceeded 32,000,ug/L. A 1.5- to 3.5-fold increase in tox-
icity was noted when test temperatures were raised
from 7 ° to 17 °C for trout and 12 ° to 27 °C for bluegills.
Cutthroat trout' 0.8 10 31,000b A 5- to 15-fold increase in the toxicity of technical
18,000-52,400 aminocarb to fish was noted when the pH was in-
creased from 6.5 to 9.5. Most of the change occurred
Rainbow trout' 1.5 12 13,500 between pH 8.5 and 9.5; the increase was only twofold
11,300-16,200 or less when variations ranged from 6.5 to 8.5. Aging
of test solutions for 4 weeks appeared to have little
Atlantic salmon' 0.4 12 7,600 effect on the toxicity to fish. Brown trout showed a
5,880-9,820 twofold increase in toxicity after 1 week of aging but
no further change occurred after 2 additional weeks.
Brown trout' 0.5 12 15,000 Time-independent LC50's for rainbow trout and
11,50019,500 bluegills were 22 and 41 µglL, respectively. Little
Brook trout' 1.0 12 16,000 cumulative toxicity was indicated; cumulative toxicity
12,700-20,100 indices were 2.5 and 2.4, respectively.
Fathead minnow' 0.7 20 8,500 ANTIMYCIN A
6,500-11,100
Chemical Name: Antibiotic isolated from the bac-
Channel catfish' 0.6 20 10,000 terium Streptomyces
6,970-14,330
Alternate Names: Antimycin, Fintrol
Bluegill' 0.6 20 3,100
1,900-5,100
Principal Use: Piscicide
Largemouth bass' 0.7 18 3,150b
2,840-3,490b Sample Description: Technical material, 95.5%
Yellow perch' 0.6 12 6,400b SUMMARY OF ACUTE TOXICITYe
5,300-7,730
96-h LC50
Walleye' 0.8 18 880 Test Stage or Temp 95% CI
755-1,030 organism wt (g) (C) (ng/1)
Daphnia magna' 11 21 10-1008 Daphnia magna I1 21 5,000-10,000b
G. pseudolimnaeus' M 10 > 50b Asellus M 15 > 1,000
Chironomus' I4 20 270a G. fasciatus M 15 8.0
187-389 5.8-11
Cutthroat trouts 1.0 10 646

31-134 Palaemonetes M 21 3,000-6,000
Rainbow trout' 1.5 10 130 Paddlefish YSF 15 1.0
103-164 0.4-3.0
Fathead minnow' 0.7 20 75 Coho salmon 0.9 12 18
63-90 12-28
Channel catfish' 4.5 20 130 Cutthroat trout 1.1 9 78
105-160 60-99
Bluegill' 0.6 20 100 Rainbow trout 1.3 13 12
68-148 7 23
848-h EC50. Lake trout F 12 53c
bTested in hard water. 45-63