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Developmental Patterns of the Clear-Winged Grasshopper at Different Altitudes and in Different Years on a Sheep Range in British Columbia, Canada1

Published online by Cambridge University Press:  31 May 2012

R. H. Handford
R. H. Handford
Affiliation:
Entomology Laboratory, Research Branch, Canada Department of Agriculture Kamloops, British Columbia
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Extract

It has long been known that life events occur earlier at lower than at higher altitudes (Hopkins, 1918; Chapman, 1931; Uvarov, 1931). Treherne and Buckell (1924) refer specifically to the earlier appearance of the clear-winged grasshopper, Camnula pellucida (Scudder), near Nicola Lake, B.C., (2020 ft.), as compared with its appearance at nearby but higher places such as Douglas Lake (2600 ft.) and in the areas between Minnie Lake and Aspen Grove “where the elevation at many points exceeds 3500 feet.” These references, and the possibility of using the knowledge to help determine dates when control operations may be necessary on various ranges in any one season, suggested the need for more precise measurements of the development of this major rangeland pest at different altitudes in different years.

Type
Articles
Information
The Canadian Entomologist , Volume 93 , Issue 8 , August 1961 , pp. 665 - 670
Copyright
Copyright © Entomological Society of Canada 1961

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References

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