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DISTRIBUTION OF INSECTS FOUND IN GRANARY RESIDUES IN THE CANADIAN PRAIRIES1

Published online by Cambridge University Press:  31 May 2012

L.B. Smith  and
P.S. Barker
L.B. Smith
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
P.S. Barker
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
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Abstract

A distribution study of stored-product and other insects in unswept, empty farm granaries was conducted in Manitoba in 1981, in Saskatchewan in 1982, and in Alberta in 1984.

Thirteen species of stored-product insects were found in Manitoba and Saskatchewan and 12 in Alberta, indicating uniform geographical distribution among the number of pest species throughout the prairies. The most common was Tribolium audax Halstead, followed by Cryptolestes ferrugineus (Stephens) and Tenebrio molitor L. Nine fungus-feeding species were found in Manitoba, 12 in Saskatchewan, and 12 in Alberta. The most common fungus feeders were Lathridius minutus (L.), Corticarina cavicollis Mann., Cryptophagus varus W.&C., and Corticaria serrata (Paykull). Five non-stored product species of insects that were scavengers, predators, or were sheltering in the granaries were found in Manitoba, 31 in Saskatchewan, and 10 in Alberta.

The distribution of six stored-product species, two fungus-feeding species, and one scavenger did not show a uniform abundance in the three prairie provinces, either in their distribution on farms or in granaries.

Résumé

On a étudié la distribution des insects des produits entreposées et des autres insects dans des cellules vides non-balayés des fermiers.

On a trouvé 13 espèces d’insects ravageurs des grains dans le Manitoba et la Saskatchewan mais 12 espèces dans l’Alberta indiquent une distribution uniforme des espèces. Les espèces les plus communs furent Tribolium audax Halstead, Cryptolestes ferrugineus (Stephens), et Tenebrio molitor L. On a trouvé 9 espèces fongivores dans le Manitoba, 12 dans la Saskatchewan et 12 dans l’Alberta. Les fongivores les plus communes furent Lathridius minutus (L.), Corticarina cavicollis Mann, Cryptophagus varus W.&C., et Corticaria serrata (Paykull). Des espèces qui mangent des débris, ou qui sont prédateurs, ou qui cherchent l’abri on a trouvé 5 dans le Manitoba, 31 dans la Saskatchewan et 10 dans l’Alberta.

La distribution et abondance de six espèces de ravageurs et deux espèces fongivores n’était pas uniforme ni au niveau provincial, ni dans les fermes, ni dans les cellules.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 10 , October 1987 , pp. 873 - 880
Copyright
Copyright © Entomological Society of Canada 1987

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