Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-26T05:48:41.056Z Has data issue: false hasContentIssue false
  • English
  • Français

Assessment of methods for estimating the numbers of aphids (Hemiptera: Aphididae) in Cereals

Published online by Cambridge University Press:  10 July 2009

Alan M. Dewar ,
Godfrey J. Dean  and
Ray Cannon
Alan M. Dewar
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts. AL5 2JQ, UK
Godfrey J. Dean
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts. AL5 2JQ, UK
Ray Cannon
Affiliation:
Ecological Physics Research Group, Cranfield Institute of Technology, Cranfield, Beds. MK43 0AL, UK
Get access Rights & Permissions [Opens in a new window]

Abstract

Visual counting was found to be the most accurate method of estimating cereal aphid numbers in field studies in England. Vacuum sampling decreased in efficiency as aphid density increased, but could be a useful alternative to visual counts at very low aphid densities when the latter became too time-consuming. Cutting tillers for later washing in the laboratory was less efficient than visual counting as aphids, especially Metopolophium dirhodum (Wlk.), fell off the plants during sampling, but this method was useful in determining the proportion of different morphs of Sitobion avenae (F.) present at very high densities.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 72 , Issue 4 , December 1982 , pp. 675 - 685
Copyright
Copyright © Cambridge University Press 1982

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

Ba-Angood, S. A. & Stewart, R. K. (1980). Occurrence, development, and distribution of cereal aphids on early and late cultivars of wheat, barley, and oats in southwestern Quebec.—Can. Ent. 112, 615–620.CrossRefGoogle Scholar
Bartlett, M. S. (1949). Fitting a straight line when both variables are subject to error.— Biometrics 5, 207–211.Google Scholar
Dean, G. J. & Luuring, B. B. (1970). Distribution of aphids in cereal crops.—Ann. appl. Biol. 66, 485–496.CrossRefGoogle Scholar
Dawson, G. W., Griffiths, D. C., Pickett, J. A., Smith, M. C. & Woodcock, C. M. (1982). Improved preparation of (E)-β-farnesene and its activity with economically important aphids.—J. Chem. Ecol. 8, 1111–1117.CrossRefGoogle ScholarPubMed
Dietrick, E. J. (1961). An improved backpack motor fan for suction sampling of insect populations.—J. econ. Ent. 54, 394–395.CrossRefGoogle Scholar
Montgomery, M. E. & Nault, L. R. (1978). Effects of age and wing polymorphism on the sensitivity of Myzus persicae to alarm pheromone.—Ann. ent. Soc. Am. 71, 788–790.CrossRefGoogle Scholar
Rabbinge, R., Ankersmit, G. W. & Pak, G. A. (1979). Epidemiology and simulation of population development of Sitobion avenae in winter wheat.—Neth. J. Pl. Path. 85, 197–220.CrossRefGoogle Scholar
Rabbinge, R., Ankersmit, G. W., Carter, N. & Mantel, W. P. (1980). Epidemics and damage effects of cereal aphids in the Netherlands.—Bull. SROP 3 (4), 99–106.Google Scholar
Rabbinge, R. & Mantel, W. P. (1981). Monitoring for cereal aphids in winter wheat.— Neth. J. Pl. Path. 87, 25–29.CrossRefGoogle Scholar
Thornhill, E. W. (1978). A motorised insect sampler.—Pest Artic. & News Summ. 24, 205–207.Google Scholar
Vickerman, G. P. (1977). Monitoring and forecasting insect pests of cereals.—pp. 227–234in Proceedings of the 1977 British Crop Protection Conference—Pests and Diseases (9th British Insecticide and Fungicide Conference), 21st to 24th November 1977, Hotel Metropole, Brighton, England. Volume 1.—322 pp. London, British Crop Protection Council.Google Scholar
Zadoks, J. C., Chang, T. T. & Konzak, C. F. (1974). A decimal code for the growth stages of cereals.—Weed Res. 14, 415–421.CrossRefGoogle Scholar