|
Description: |
4 pages : tables ; 26 cm. |
|
|
With Note: |
With: Observations on the effects of irrigation water containing 3-trifluoromethyl-4-nitrophenol (TFM) on plants / by Philip A. Gilderhus. (No. 100) : Effects of water temperature, hardness, and pH on the toxicity of benzocaine to eleven freshwater fishes / by Terry D. Bills, George E. Howe, and Leif L. Marking. (No. 102). |
|
|
Bibliography Note: |
Includes bibliographical references (page 4). |
|
|
Summary, Etc. Note: |
Abstract: Residues of malachite green in muscle, eggs, and fry of Atlantic salmon and chinook salmon were determined by colorimetric analysis after the fish had been routinely treated with the chemical at fish hatcheries. The concentration of residues in fish muscle, generally dependend on the elapsed time since the last treatment; concentrations were usually highest in fish sampled 1 or 2 days after the last treatment and had declined somewhat to values as low as 0.33 microgram/gram after 18-41 days. Residues in eggs taken from adults that had been treated with malachite green were about 0.1 to 4.2 microgram/gram in Atlantic salmon and 0.1 to 1.0 microgram/gram in chinook salmon; there was little relation between the residue concentrations in the eggs and the elapsed time since the last treatment. Residues of malachite green in fry newly hatched from eggs of treated chinook salmon ranged from 0.14 to 1.16 microgram/gram. |