Abstract
PEARSON1 first showed that the stomach toxicity of dieldrin to fifth-instar hoppers (nymphs) of the desert locust (Schistocerca gregaria Forsk.) was increased by a period of starvation after treatment and suggested that this was due to variation in the rate of passage of the poison through the gut. We have confirmed and extended his observations and are directing attention to them because there appears to be little published information on the effects of starvation on the toxicity of stomach poisons to insects2 although attention has been given to the effects of the diet fed to insects before they are used for experimental purposes3.
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References
Pearson, A. J. A., Proc. Fourth Internat. Congr. Crop Protection, Hamburg (1957).
Busvine, J. R., “Techniques for Testing Insecticides” (London, 1957).
Potter, C., and Way, M. J., in “Methods of Testing Chemicals on Insects”, ed. Sheppard, H. H., 1 (Minneapolis, 1958).
Ellis, P. E., and Ashall, C., Anti-locust Bull., No. 25 (1957).
Rainey, R. C., J. Sci. Food and Agric., 9, 677 (1958).
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MacCUAIG, R., WATTS, W. Time of Feeding in Relation to the Toxicity of a Stomach Poison to the Desert Locust. Nature 185, 335–336 (1960). https://doi.org/10.1038/185335b0
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DOI: https://doi.org/10.1038/185335b0
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