Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-26T12:09:44.124Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations on the flight periods of aphids in a Sitka spruce plantation in north-eastern Scotland

Published online by Cambridge University Press:  10 July 2009

W. H. Parry
W. H. Parry
Affiliation:
University of Aberdeen, Department of Forestry, St. Machar Drive, Old Aberdeen AB9 2UU, Scotland
Get access Rights & Permissions [Opens in a new window]

Extract

Flight activity of aphids during 1969–71 in a Sitka spruce plantation in north-eastern Scotland was recorded by means of sticky traps. Two flight periods occurred, June–August and September–October. Fewer aphids were caught at 120 and 180 cm than at 60 cm above ground during June–August, while fewer were caught at 60 cm in September–October. After accounting for differences in wind speed at these heights, it was shown that aerial density was consistently higher at 60 cm. The first flight which comprised mostly Elatobium abietinum (Wlk.) was three weeks early in 1971; this was associated with the rapid increase in aphid population on spruce shoots, due to the preceding mild winter. Reinfestation by this species after spraying could follow under similar circumstances. Adelges laricis Vail. and A. viridis (Ratz.) sexuparae were caught in the first flight, and A. cooleyi (Gill.) gallicolae in the second; all galls on Sitka were by gallicolae of A. cooleyi. Aphis fabae Scop, was the most common species in the second flight.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 62 , Issue 3 , February 1973 , pp. 391 - 399
Copyright
Copyright © Cambridge University Press 1973

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bevan, D. (1968). Entomology report.—Rep. Forest. Res. Lond. (1968), 112–115.Google Scholar
Biddle, P. G. (1970). Virus diseases of forest trees.—Rep. Forest. Res. Lond. (1970), 179–180.Google Scholar
Carter, C. I. (1971). Conifer woolly aphids (Adelgidae) in Britain.—Bull. For. Commn., Lond. 42, 51 pp.Google Scholar
Hartley, G. S. & MacLauchlan, J. W. G. (1969). A simple integrating thermometer for field use.—J. Ecol. 57, 151–154.CrossRefGoogle Scholar
Heathcote, G. D. (1957). The optimum size of sticky aphid traps.—Pl. Path. 6, 104–107.CrossRefGoogle Scholar
Heathcote, G. D., Palmer, J. M. P. & Taylor, L.R. (1969). Sampling for aphids by traps and by crop inspection.—Ann. appl. Biol. 63, 155–166.Google Scholar
Johnson, B. (1965). Wing polymorphism in aphids II. Interaction between aphids.—Entomologialogia exp. appl. 8, 49–64.CrossRefGoogle Scholar
Kloft, W. & Ehrhardt, P. (1959). Zur Sitkalauskalamität in Nordwestdeutschland.— Waldhygiene 3, 47–49.Google Scholar
Parry, W. H. (1969). A study of the relationship between defoliation of Sitka spruce and population levels of Elatobium abietinum (Walker).—Forestry 42, 69–82.CrossRefGoogle Scholar
Parry, W. H. (1971). Research on the green spruce aphid Elatobium abietinum.—Rep. Forest. Res., Lond (1970), 182–184.Google Scholar
Taylor, L. R. (1960). The distribution of insects at low levels in the air.—J. Anim. Ecol. 29, 45–63.CrossRefGoogle Scholar
Varty, I. W. (1953). Cinaropsis pilicornis, a rare aphid attacking spruce transplants.—Scott. For. 7, 86–87.Google Scholar