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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
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/3135
Page Count: 11
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(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.
Journal of Animal Ecology © 1973 British Ecological Society