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Pathophysiology of Hymenolepis diminuta infections in Tenebrio molitor: effect of parasitism on haemolymph proteins

Published online by Cambridge University Press:  06 April 2009

Hilary Hurd  and
C. Arme
Hilary Hurd
Affiliation:
Parasitology Research Laboratory, Department of Biological Sciences, University of Keele, Keele, Staffs. ST5 5BG
C. Arme
Affiliation:
Parasitology Research Laboratory, Department of Biological Sciences, University of Keele, Keele, Staffs. ST5 5BG
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Summary

The effects of metacestodes of Hymenolepis diminuta on haemolymph proteins of Tenebrio molitor are restricted to female hosts. In beetles aged 15 days post-emergence, and harbouring 12-day-old metacestodes, haemolymph concentration is 46·7% higher than in non-infected animals and similar effects are found in longer standing infections. Electrophoresis of haemolymph revealed the presence of 13 bands. Densitometric analysis showed that only band 2/3 was significantly elevated in infected hosts although band 7/8 also showed an increase. These bands were also present in egg homogenates and are thought to be vitellogenins. It is therefore proposed that the excess protein found in infected beetles is a female-specific protein resulting from an interaction between the parasite and the host endocrine system.

Type
Research Article
Information
Parasitology , Volume 89 , Issue 2 , October 1984 , pp. 253 - 262
Copyright
Copyright © Cambridge University Press 1984

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