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THE BIOLOGY OF POLLENIA RUDIS, THE CLUSTER FLY (DIPTERA: CALLIPHORIDAE): I. HOST LOCATION BY FIRST-INSTAR LARVAE

Published online by Cambridge University Press:  31 May 2012

A. J. Thomson  and
D. M. Davies
A. J. Thomson
Affiliation:
Department of Biology, McMaster University, Hamilton, Ontario
D. M. Davies
Affiliation:
Department of Biology, McMaster University, Hamilton, Ontario
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Abstract

The percentage of first-instar cluster-fly larvae successfully penetrating their earthworm hosts, Eisenia rosea (Sav.), remained quite constant at 13 °C when ratios of larvae to worms were from 7.5:1 to 0.5:1. Larvae descended into undisturbed soil only by following naturally occurring pore spaces (inter-ped spaces or those caused by vegetation or earthworms). In disturbed soil lacking natural pores, few earthworms were penetrated by the larvae, partly due to earthworm behaviour of blocking their burrows with casts. The significance of soil conditions and other factors as it affects this parasitic relationship is discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 2 , February 1973 , pp. 335 - 341
Copyright
Copyright © Entomological Society of Canada 1973

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