Hostname: page-component-6d856f89d9-jrqft Total loading time: 0 Render date: 2024-07-16T08:19:58.808Z Has data issue: false hasContentIssue false
  • English
  • Français

ECOLOGY OF STORED GRAIN IN THE CANADIAN PRAIRIES: I. THE DISTRIBUTION AND SIZE OF A LOW DENSITY POPULATION OF CRYPTOLESTES FERRUGINEUS (COLEOPTERA: CUCUJIDAE)1

Published online by Cambridge University Press:  31 May 2012

L. B. Smith
L. B. Smith
Affiliation:
Research Station, Agriculture Canada, Winnipeg, Manitoba R3T 2M9
Get access Rights & Permissions [Opens in a new window]

Abstract

Two metal granaries each containing 27.3 tonnes of dry wheat (13–14% m.c.) were artificially infested with Cryptolestes ferrugineus (Stephens) and sampled for up to 4 years to determine fluctuations in insect density as influenced by changes in grain temperature and moisture content during storage. Density remained low (fewer than 5 insects/kg) throughout the period of study. Most insects were found at the floor near the wall on the south side of the granary. The temperature in the centre of the grain mass ranged from −5° to 22 °C during the 4 years. During a single season, moisture content varied as much as 5% at the centre near the surface of each grain mass, but did not vary more than 1% at other locations. In the first year of storage, the viability of the wheat ranged from 80% to 96%, and after 3 years in storage, 68% to 100%. Since no significant change was recorded in the temperature, moisture content, or germination of the wheat in the granaries, it was concluded that the biological activity of a low density population of C. ferrugineus does not initiate heating that occasionally occurs in farm-stored grain in Canada.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 12 , December 1978 , pp. 1281 - 1292
Copyright
Copyright © Entomological Society of Canada 1978

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

Burges, H. D. 1960. A spear for sampling bulk grain by suction. Bull. ent. Res. 51(1): 1–6.CrossRefGoogle Scholar
Eighme, L. E. 1966. Relationships of insects to hot spots in stored wheat. J. econ. Ent. 59(3): 564–569.CrossRefGoogle Scholar
Howe, R. W. 1962. A study of the heating of stored grain caused by insects. Ann. appl. Biol. 50: 137–158.CrossRefGoogle Scholar
Liscombe, E. A. R. and Watters, F. L.. 1962. Insect and mite infestations in empty granaries in the prairie provinces. Can. Ent. 94: 433–441.CrossRefGoogle Scholar
Loschiavo, S. R. 1975. Field tests of devices to detect insects in different kinds of grain storages. Can. Ent. 107: 385–389.CrossRefGoogle Scholar
Loschiavo, S. R. and Sinha, R. N.. 1966. Feeding, oviposition and aggregation by the rusty grain beetle, Cryptolestes ferrugineus (Steph.) on seed borne fungi. Ann. ent. Soc. Am. 59(3): 578–585.CrossRefGoogle Scholar
Sikorowski, P. P. 1964. Interrelation of fungi and insects to deterioration of stored grains. Tech. Bull. 42. Institute of Agricultural Sciences, Washington State University.Google Scholar
Sinha, R. N. 1961. Insects and mites associated with hot spots in farm stored grain. Can. Ent. 93(8): 609–621.CrossRefGoogle Scholar
Sinha, R. N. 1969. Infestation of stored grain by insects and mites. Proc. of a Symposium on Biological contamination of grain and animal by-products. Minneapolis, Minnesota, 7–16.Google Scholar
Sinha, R. N. and Wallace, H. A. H.. 1965. Ecology of a fungus-induced hot spot in stored grain. Can. J. Pl. Sci. 45: 48–59.CrossRefGoogle Scholar
Sinha, R. N. and Wallace, H. A. H.. 1966. Ecology of insect-induced hot spots in stored grain in Western Canada. Researches Popul. Ecol. Kyoto Univ. 8: 107–132.Google Scholar
Smallman, B. N. 1944. Entomological investigations. In Rep. Grain Res. Lab. Can. (1943) 17: 34.Google Scholar
Smith, L. B. 1962. Observations on the oviposition rate of the rusty grain beetle, Cryptolestes ferrugineus (Steph.) (Coleoptera:Cucujidae). Ann. ent. Soc. Am. 55(1): 77–82.CrossRefGoogle Scholar
Smith, L. B. 1965. The intrinsic rate of natural increase of Cryptolestes ferrugineus (Stephens) (Coleoptera, Cucujidae). J. Stored Prod. Res. 1: 35–49.CrossRefGoogle Scholar
Smith, L. B. 1977. Efficiency of Berlese-Tullgren funnels for removal of the rusty grain beetle, Cryptolestes ferrugineus, from wheat samples. Can. Ent. 109: 503–509.CrossRefGoogle Scholar
Statistics Canada. Grain trade of Canada. Stat. Can. 22–201. Annual, 1966–1975.Google Scholar
Watters, F. L. 1955. Entomological aspects of bulk grain storage in the Prairie Provinces. Proc. ent. Soc. Man. 11: 28–37.Google Scholar