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DISTRIBUTION AND ABUNDANCE OF LYGUS SPP. (HETEROPTERA: MIRIDAE) ON ALFALFA AND CANOLA IN MANITOBAf1

Published online by Cambridge University Press:  31 May 2012

B.H. Timlick ,
W.J. Turnock  and
I. Wise
B.H. Timlick
Affiliation:
937 Waterford Ave., Winnipeg, Manitoba, Canada R3T 1G9
W.J. Turnock*
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
I. Wise
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
*
2Author to whom reprint requests should be sent.
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Abstract

Lygus species were sampled from alfalfa and canola fields in Manitoba from 1988 to 1990. Lygus lineolaris (Palisot de Beauvois), L. borealis (Knight), and L. elisus (Van Duzee) were found consistently throughout the agricultural area. The relative abundance of these species varied among crops, physiographic regions, years, and date of collection. The most abundant species in alfalfa and canola fields tended to be L. borealis in the north and west, L. elisus in the south, and L. lineolaris in the east. Each of the species was the most abundant in some collections, however L. borealis tended to be more abundant in alfalfa and L. lineolaris and L. elisus in canola. First-generation nymphs of Lygus species were found on alfalfa and those of the second generation on canola.

Résumé

Les espèces de Lygus ont été inventoriées dans des champs de luzerne et des champs de canola au Manitoba, de 1988 à 1990. Lygus lineolaris (Palisot de Beauvois), L. borealis (Knight) et L. elisus (Van Duzee) ont été trouvés partout dans la région agricole. L’abondance relative de ces espèces variait en fonction de la récolte, de la région physiographique, de l’année et de la date de l’échantillonnage. Les espèces les plus abondantes dans les deux types de récolte étaient L. borealis dans le nord et dans l’ouest, L. elisus dans le sud et L. lineolaris dans l’est. Chacune des espèces prédominait dans l’un ou l’autre des échantillons, mais L. borealis avait tendance à dominer dans la luzerne, alors que L. lineolaris et L. elisus avaient tendance à être plus abondantes dans le canola. Les larves de première génération de Lygus se retrouvaient dans la luzerne et celles de la seconde génération, dans le canola.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 6 , December 1993 , pp. 1033 - 1041
Copyright
Copyright © Entomological Society of Canada 1993

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Footnotes

1

Contribution No. 1543 from the Agriculture Canada Research Station, Winnipeg, Manitoba.

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