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The Periodicity of Aphid Flight in East Africa

Published online by Cambridge University Press:  10 July 2009

V. F. Eastop
V. F. Eastop
Affiliation:
East African Agriculture & Forestry Research Organisation*.
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Summary

Continuous trapping of winged Aphids was carried out with Moericke trays and a suction trap for two years at a site at 6,850 ft. above sea level in Kenya, and with Moericke trays, for four months only, at a site at 1,200 ft. in southern Tanganyika.

The trap data show a marked seasonal periodicity of flight (three-quarters of the annual catch in two months) at the Kenya site. The large catch is a reflection of a large increase in population following the rains. A similar relation between size of catch and the period of the rains is indicated by the data from Tanganyika.

Successive hourly catches with a suction trap show no distinct diurnal double peak of aerial density such as occurs in Europe.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 48 , Issue 2 , June 1957 , pp. 305 - 310
Copyright
Copyright © Cambridge University Press 1957

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