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DISPERSION AND SEASONAL ACTIVITY OF THE PALES WEEVIL, HYLOBIUS PALES (COLEOPTERA: CURCULIONIDAE), IN MICHIGAN CHRISTMAS TREE PLANTATIONS

Published online by Cambridge University Press:  31 May 2012

Jeffrey A. Corneil  and
Louis F. Wilson
Jeffrey A. Corneil
Affiliation:
Oregon Department of Forestry, Prineville, Oregon 97310
Louis F. Wilson
Affiliation:
North Central Forest Experiment Station, U.S. Department of Agriculture, Forest Service, East Lansing, Michigan 48823
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Abstract

Adult weevils were tracked in four Michigan Christmas tree plantations using a capture–recapture method. About 40% of 886 marked weevils were recaptured, some as many as 11 times. All weevils were recaptured in the plots in which they had originally been captured, suggesting that weevils disperse slowly in plantations having favorable conditions for weevil growth and reproduction. Weevils congregated near fresh stumps in the spring, and moved to nearby trees in the summer. They rested beneath the trees during the day and climbed on the trees at night. They can be controlled with chemicals and, in some cases, cultural practices.

Résumé

Des charançons adultes ont été suivis dans quatre plantations d'arbres de Noël du Michigan à l'aide de la méthode de capture–recapture. Environ 40% des 886 charançons marqués ont été recapturés dans les parcelles où ils avaient été capturés à l'origine, indiquant que les charançons se dispersent lentement dans les plantations caractérisées par des conditions favorables à la croissance et la reproduction des charançons. Les charançons se sont assemblés près des souches nouvelles au printemps, et se sont déplacés sur les arbres situés à proximité à l'été. Durant le jour ils reposent sous les arbres sur lesquels ils grimpent durant la nuit. Il est possible de les contrôler avec des produits chimiques, et quelquefois par l'emploi de méthodes culturales.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 5 , May 1984 , pp. 711 - 717
Copyright
Copyright © Entomological Society of Canada 1984

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