Limited Movement of Individuals in a Population of the Migratory Grasshopper, Melanoplus bilituratus (Walker) (Acrididae) at Kamloops, British Columbia

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Abstract
Recent papers by Watt (1959) and Holling (1959) have renewed interest in the use of mathematical formulae as tools in the study of population dynamics. But the usefulness of mathematical formulae can be no greater than the accuracy of the data that are fed into them and at present accurate methods of estimating insect populations are generally lacking.Estimates made by the method of marking release and recapture, described by Lincoln (1930) and improved by later authors, depend for their accuracy on the thorough mixing of marked individuals in the wild population. The method was used by Richards (1953) to measure populations of the red locust in Tanganyika, and the purpose of the present investigation was to determine its suitability in estimating populations of the migratory grasshopper, Melanoplus bilituratus (Walker).