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The feeding processes of the cattle-tick Boophilus microplus (Canestrini): A study in host-parasite relations

Part I. Attachment to the host

Published online by Cambridge University Press:  06 April 2009

D. E. Moorhouse  and
R. J. Tatchell
D. E. Moorhouse
Affiliation:
Department of Parasitology, University of Queensland, Brisbane, Australia
R. J. Tatchell
Affiliation:
C.S.I.R.O., Division of Entomology, Veterinary Parasitology Laboratory, Yeerongpilly, Queensland, Australia
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Extract

The method of attachment of the cattle tick Boophilus microplus (Canestrini) has been investigated on cattle of different breeds and susceptibility to infestation.

Despite their differing sizes, the larval, nymphal and adult mouthparts penetrate to a similar depth towards the base of the Malpighian layer. Penetration may occur within 5 min of the arrival of the tick on the host.

Attachment is accomplished by the secretion of a cement substance in which the mouthparts are embedded and which adheres firmly to the hosts skin.

The cement consists of two main components: a cortex of carbohydrate-containing protein, stabilized by quinone tanning and disulphide linkages, and an internum which is lipoprotein in nature.

The start of the secretion of cement and the initial cutting of the host tissues by the chelicerae occur simultaneously. Final rapid engorgement of each stage is preceded by a secondary secretion of cement into a fluid-filled cavity which forms directly beneath the mouthparts and provides additional support.

It is concluded that attachment is an entirely mechanical process by an inert cement which does not provoke the development of host-parasite factors inimical to the tick.

It is with much pleasure that we acknowledge generous financial support by the Australian Cattle and Beef Research Committee which has made possible this project.

Type
Research Article
Information
Parasitology , Volume 56 , Issue 4 , November 1966 , pp. 623 - 631
Copyright
Copyright © Cambridge University Press 1966

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