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FLIGHT BEHAVIOR OF THE GREENHOUSE WHITEFLY, TRIALEURODES VAPORARIORUM (WESTWOOD) (HOMOPTERA: ALEYRODIDAE), IN RELATION TO YELLOW STICKY TRAPS1

Published online by Cambridge University Press:  31 May 2012

David R. Gillespie  and
Donald J.M. Quiring
David R. Gillespie
Affiliation:
Agriculture Canada Research Station, PO Box 1000, Agassiz, British Columbia, Canada V0M 1A0
Donald J.M. Quiring
Affiliation:
Agriculture Canada Research Station, PO Box 1000, Agassiz, British Columbia, Canada V0M 1A0
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Abstract

The placement of yellow sticky traps in relation to greenhouse-grown tomato plants affected the number of greenhouse whiteflies captured on traps. Whiteflies were caught on traps close to the ground when the traps were 1.0 m or more from plants, and were caught on traps level with the point from which they started flight when the traps were 0.5 m from plants. Traps 1.0 m from plants primarily caught whiteflies less than 5 days old, and trap catches were not correlated with numbers on plants; traps 0.5 m from plants caught whiteflies of all ages, and trap catches were correlated with numbers on plants. These results suggest that under field conditions greenhouse whiteflies would behave much like other species of whitefly, and would tend to be caught on traps close to the ground. In greenhouses, monitoring traps should be placed close to and slightly below the tops of the plants. Trap counts could be treated as samples from individual plants and used to make an estimate of population size in the greenhouse. Traps placed further from the plants monitor flight activity only.

Résumé

Installation de pièges collants jaunes à proximité de plants de tomates cultivés en serre affecte le nombre d’Aleurodes des serres capturés sur les pièges. Les insectes sont capturés sur les pièges installés près du sol lorsque ceux-ci se trouvent à 1,0 m ou plus des plants et sont capturés sur les pièges situés au niveau où ils sont au moment de leur envol lorsque les pièges se trouvent à 0,5 m des plants. Les pièges placés à 1,0 m des plants attrappent surtout des aleurodes de moins de 5 jours et le nombre d’insectes capturés n’est pas en corrélation avec le nombre de plants; les pièges placés à 0,5 m des plants capturent des insectes de tous âges et leur nombre est en corrélation avec le nombre de plants. Ces résultats indiquent que, dans des conditions naturelles, les Aleurodes des serres se comporteraient probablement comme les autres espèces d’aleurodes et auraient sans doute tendance à être capturés par les pièges situés près du sol. Dans les serres, les pièges devraient être placés près des plants et légèrement au-dessous de leur sommet. Les échantillons d’insectes capturés par les pièges devraient être considérés comme équivalents à des échantillons recueillis sur des plants individuels et utilisés pour estimer la taille de la population dans la serre. Les pièges placés plus loin des plants ne peuvent enregistrer que l’activité de vol.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 124 , Issue 5 , October 1992 , pp. 907 - 916
Copyright
Copyright © Entomological Society of Canada 1992

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