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Influence of Plants other than the Food Plants of their Host on Host-Finding by Tachinid Parasites

Published online by Cambridge University Press:  31 May 2012

L. G. Monteith
Affiliation:
Entomology Research Institute for Biological Control, Research Branch, Canada Department of Agriculture, Belleville, Ontario

Extract

Earlier work indicated that food plants of the tenthredinid sawflies attacked by Drino bohemica Mesn. and Bessa harveyi Tns. influence host-finding by these tachinid parasites (Monteith, 1955, 1958a). There is a high degree of interaction between stimuli produced by the host larvae and by their food plants (Monteith, 1955, 1958b).

It was observed during field studies that the percentage parastism by B. harveyi of the larch sawfly, Pristiphora erichsonii (Htg.), varied with increasing height above the ground and in different sections of tamarack trees, Larix larician (DuRoi) K. Koch, on which the sawfly larvae were feeding. It appeared that shrubs and trees other than L. laricina influenced host-finding by B. harveyi.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1960

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