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LYGUS SPECIES ON OILSEED RAPE, MUSTARD, AND WEEDS: A SURVEY ACROSS THE PRAIRIE PROVINCES OF CANADA

Published online by Cambridge University Press:  31 May 2012

Michael D. Schwartz  and
Robert G. Foottit
Michael D. Schwartz
Affiliation:
Biosystematics Research Centre, Agriculture Canada, Research Branch, Central Experimental Farm, Ottawa, Ontario, CanadaK1A 0C6
Robert G. Foottit
Affiliation:
Biosystematics Research Centre, Agriculture Canada, Research Branch, Central Experimental Farm, Ottawa, Ontario, CanadaK1A 0C6
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Abstract

Lygus species were sampled from the flowering heads and developing racemes of three species of Brassica [B. campestris L., B. juncea (L.) Coss., and B. napus L.] and two species of Sinapis (S. alba L. and S. arvensis L.) from cultivated fields during a survey from Prawda, Manitoba, to Lethbridge, Alberta. Lygus elisus Van Duzee and L. borealis (Kelton) were the most prevalent and abundant in Alberta and Saskatchewan; L. lineolaris (Palisot) was the most prevalent and abundant in Manitoba. Lygus rubrosignatus Knight, L. solidaginis (Kelton), and L. shulli Knight, previously unreported on Brassica, occurred in low numbers at most sites in Alberta and Saskatchewan.

Résumé

Les espèces de Lygus ont été inventoriées dans les fleurs et les racèmes en développement chez trois espèces de Brassica [B. campestris L., B. juncea (L.) Coss. et B. napus L.] et deux espèces de Sinapis (S. albah L. et S. arvensis L.), dans des champs cultivés dispersés entre Prawda, Manitoba, et Lethbridge, Alberta. Lygus elisus Van Duzee et L. borealis (Kelton) se sont avérées les espèces les plus fréquentes et les plus abondantes en Alberta et en Saskatchewan, alors que L. lineolaris (Palisot) était l’espèce la plus fréquente et la plus abondante au Manitoba. Lygus rubrosignatus Knight, L. solidaginis (Kelton) et L. shulli Knight, jamais signalées chez Brassica auparavant, ont été retrouvées en petits nombres dans la plupart des champs inventoriés en Alberta et en Saskatchewan.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 124 , Issue 1 , February 1992 , pp. 151 - 158
Copyright
Copyright © Entomological Society of Canada 1992

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