The Possibility of Active Long-distance Migrations by Anopheles pharoensis Theobald

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Date
1962
Authors
Garrett,J C
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Abstract
What amounts to a new theory of active migration as a developed biological character in certain small insects has recently been formulated and ,discussed in the literature. a , b The group in which the character has been most studied is the Aphidaeweak- flying iRsects in which the great distances covered could not be covered without the aid of wind. But this phenomenon of wind-aided dispersion is no longer regarded as a process of mere passive or mechanical transportation, but as one which is started and terminated by definite changes in the insect's pattern of activity. These changes are held to be due to some physiological mechanism, which itself may be set in motion by particular conditions in the environment.
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Bulletin, 27, p. 299-302