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Low-Altitude Migration and Diurnal Flight Periodicity; the Importance of Plusia gamma L. (Lepidoptera: Plusiidae)

L. R. Taylor, R. A. French and E. D. M. Macaulay
Journal of Animal Ecology
Vol. 42, No. 3 (Oct., 1973), pp. 751-760
DOI: 10.2307/3135
Stable URL: http://www.jstor.org/stable/3135
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Low-Altitude Migration and Diurnal Flight Periodicity; the Importance of Plusia gamma L. (Lepidoptera: Plusiidae)
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Abstract

(1) Plusia gamma migrates by day and night. (2) In field observations made between 1933 and 1964, night-time flight is predominantly down-wind but day-time flight is not. (3) This suggests that flight direction, per se, during migration is ecologically irrelevant. (4) It is argued that migration in insects is largely the loss of social inhibitions and a resulting reversion to simple linear movement within the normal spatial reference frame of the species.

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