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Influence of the Health of the Food Plant of the Host on Host-finding by Tachinid Parasites

Published online by Cambridge University Press:  31 May 2012

L. G. Monteith
L. G. Monteith
Affiliation:
Research Institute, Research Branch, Canada Department of Agriculture, Belleville Ontario
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Abstract

In the laboratory, the parasitic tachinids Drino bohemica Mesn. and Bessa harveyi (Tns.) made two to four times as many attacks on tenthredinid sawfly larvae exposed on unhealthy as on those on healthy food trees. Olfactory stimuli from the unhealthy trees were preferred by the parasites to those from healthy trees. The possibility of greater masking of stimuli from hosts on healthy foliage than from those on unhealthy foliage was apparently of little importance. In the field a moderate to severe attack by sawfly larvae on a tree will cause the tree to become unhealthy and this increases its attractiveness to the parasites. Thus, the host larvae indirectly assist the parasites to find them. Stimuli that are directly influenced by the health of the food plant of the host may interact with those from other environmental factors in determining the apparent degree of preference by tachinid parasites for different hosts.

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 11 , November 1964 , pp. 1477 - 1482
Copyright
Copyright © Entomological Society of Canada 1964

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References

Cushman, R. A. 1926. Location of individual hosts versus systematic relation of host species as a determining factor in parasitic attack. Proc. ent. Soc. Washington 28: 5-6.Google Scholar
Evans, A. C. 1941. Physiological relationships between insects and their host plants. II. A preliminary study of the effects of aphids on the chemical composition of cabbage and field beans. Ann. appl. Biol. 28: 368-371.CrossRefGoogle Scholar
Monteith, L. G. 1955. Host preferences of Drino bohemica Mesn. (Diptera: Tachinidae), wirh particular reference to olfactory responses. Canad. Ent. 87: 509-530.CrossRefGoogle Scholar
Monteith, L. G. 1958a. Influence of food plant of host on attractiveness of the host to tachinid parasites with notes on preimaginal conditioning. Canad. Ent. 90: 478-482.CrossRefGoogle Scholar
Monteith, L. G. 1958b. Influence of host and its food plant on host-finding by Drino bohemica Mesn. (Diptera: Tachinidae) and interaction of other factors. Proc. 10th int. cong. Ent., Montreal 2: 603-606.Google Scholar
Monteith, L. G. 1960. Influence of plants other than the food plants of their host on host-finding by tachinid parasites. Canad. Ent. 92: 641-652.CrossRefGoogle Scholar
Monteith, L. G. 1962a. Loss of attractiveness to Bessa harveyi (Tns.) (Diptera: Tachinidae) of host larvae during cold storage. Canad. Ent. 94: 881-883.CrossRefGoogle Scholar
Monteith, L. G. 1962b. Apparent continual changes in the host preferences of Drino bohemica Mesn. (Diptera: Tachinidae) and their relation to the concept of host-conditioning. Animal Behav. 10: 292-299.CrossRefGoogle Scholar
Monteith, L. G. 1963. Daily selection by the parasite Drino bohemica Mesn. (Diptera: Tachinidae) between four species of hosts. Canad. Ent. 95: 162-166.CrossRefGoogle Scholar
Townes, H. 1960. Host selection patterns in some nearctic ichneumonids (Hymenoptera). Verh. XI int. Kongr. Ent., Wien 2: 738-741.Google Scholar