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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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References

Broadbent, L. (1946). Alate aphides trapped in north-west Derbyshire, 1945.—Proc. R. ent. Soc. Lond, (A) 21, pp. 41–46.Google Scholar
Broadbent, L. & Doncaster, J. P. (1949). Alate aphids trapped in the British Isles, 1942–1947.—Ent. mon. Mag, 85, pp. 174–182.Google Scholar
Doncaster, J. P. & Gregory, P. H. (1948). The spread of virus diseases in the potato crop.—Agric. Res. Coun. Rep., no. 7, 189 pp. London, H.M.S.O.Google Scholar
Eastop, V. F. (1951). Diurnal variation in the aerial density of Aphididae.—Proc. R. ent. Soc. Lond, (A) 26, pp. 129–134.Google Scholar
Eastop, V. F. (1955). Selection of Aphid species by different kinds of insect traps.—Nature, Lond, 176, p. 936.CrossRefGoogle Scholar
Johnson, C. G. (1949). Development of research on the insect aerofauna.—Brit. Sci. News, 2, pp. 243–246.Google ScholarPubMed
Johnson, C. G. (1950). A suction trap for small airborne insects which automatically segregates the catch into successive hourly samples.—Ann. appl. Biol, 37, pp. 80–91.CrossRefGoogle Scholar
Johnson, C. G. (1954). Aphid migration in relation to weather.—Biol. Rev, 29, pp. 87–118.CrossRefGoogle Scholar
Johnson, C. G. & Eastop, V. F. (1951). Aphids captured in a Rothamsted suction trap, 5 ft. above ground level, from June to November, 1947.—Proc. R. ent. Soc. Lond, (A), 26, pp. 17–24.Google Scholar
Moericke, V.. (1955). Über das Verhalten phytophager Insekten während des Befallsflugs unter dem Einfluss von weissen Flächen.—Z. PflKrankh, 62, pp. 588–593.Google Scholar
Thomas, I. & Vevai, E. J. (1940). Aphis migration. An analysis of the results of five seasons' trapping in North Wales.—Ann. appl. Biol, 27, pp. 393–405.CrossRefGoogle Scholar