ENVIRONMENTAL FACTORS INFLUENCING BLACKFLY POPULATIONS

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  • 1 January 1967
    • journal article
    • research article
    • Vol. 37  (1) , 139-+
Abstract
A detailed methodology for the collection of information about blackflies is given, which was developed for investigations mainly in the Hol-arctic regions but is basically applicable to other parts of the world. A brief survey of the population dynamics of various species of black-flies in various parts of the Holarctic regions is given, and the main factors influencing the population dynamics are discussed. Interspecific and intraspecific fluctuations in natural blackfly populations are attributed chiefly to abiotic environmental factors rather than to competition. Larval competition in a given microhabitat is mainly individual, though specimens belonging to a given species may have a slightly more favorable position than others. The use of parasites and in particular the replacement of one species by another are promising methods of blackfly control. Predators are not likely to be useful for this purpose.

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