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Boophilus microplus: rejection of larvae from British breed cattle

Published online by Cambridge University Press:  06 April 2009

D. Koudstaal ,
D. H. Kemp  and
J. D. Kerr
D. Koudstaal
Affiliation:
CSIRO, Division of Animal Health and Division of Mathematics and Statistics, Long Pocket Laboratories, Private Bag No. 3, P.O., Indooroopilly, Queensland, Australia4068
D. H. Kemp
Affiliation:
CSIRO, Division of Animal Health and Division of Mathematics and Statistics, Long Pocket Laboratories, Private Bag No. 3, P.O., Indooroopilly, Queensland, Australia4068
J. D. Kerr*
Affiliation:
CSIRO, Division of Animal Health and Division of Mathematics and Statistics, Long Pocket Laboratories, Private Bag No. 3, P.O., Indooroopilly, Queensland, Australia4068
*
*
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Summary

Larvae of Boophilus microplus were labelled with [32P] and used to study the rejection of larvae from British breed cattle with different levels of resistance. On animals of high resistance the loss of larvae due to grooming ranged from 9–54% during the first 24 h of infestation, and more time was spent grooming by these animals. Most of the grooming activity could be attributed to the presence of tick larvae and the presence of older tick stages did not increase the percentage of larvae lost. Grooming was directed to attached larvae and these could be removed. Animals of low resistance did not lose a significant number of larvae as a result of grooming, but all previously infested hosts lost a proportion of the larvae (18–39%) which could not be accounted for by grooming. This loss was greater than the total loss of larvae (11%) on animals not previously exposed to B. microplus.

Type
Research Article
Information
Parasitology , Volume 76 , Issue 3 , June 1978 , pp. 379 - 386
Copyright
Copyright © Cambridge University Press 1978

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References

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