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DISTRIBUTION OF FIRST INSTAR NYMPHS OF ADELGES PICEAE (HOMOPTERA: PHYLLOXERIDAE) ON BRANCHES OF BALSAM FIR, ABIES BALSAMEA, AFTER COLONIZATION1

Published online by Cambridge University Press:  31 May 2012

D. G. Bryant
D. G. Bryant
Affiliation:
Newfoundland Forest Research Centre, Canadian Forestry Service, St. John's, Newfoundland
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Abstract

Balsam woolly aphid nymphs, Adelges piceae (Ratz.), settle primarily in the apical 3-year growth of a branch. This portion of a branch is a natural population unit that can be designated a sample universe for detailed studies of aphid survival and mortality.

Résumé

Le puceron lanigère du sapin, Adelges piceae (Ratz.), est un insecte nuisible sur les sapins, Abies, particulièrement sur A. balsamea (L.) Mill. une espèce d’importance commerciale dans l’est du Canada. La nymph se promène jusqu’à 10 jours après l’éclosion, insère ses mandibules et maxillaires, qui, sont filamenteux, dans l’écorce, et reste au même lieu tout sa vie. Après que toutes les nymphes s’établissent on en trouve 85% sur les rameaux de l’année et moins de 4% sur les rameaux âgés de trois et quatre ans. Il apparaît que les nymphes sur les rameaux de plus de trois ans, se promènent vers l’extrémité de la branche sans hasard. Donc, on peut désigner cette extrémité de trois ans un univers naturel dans lequel on peut conduire des études intensives de la dynamique de population du Puceron lanigère.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 10 , October 1974 , pp. 1075 - 1080
Copyright
Copyright © Entomological Society of Canada 1974

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References

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