Experimental & Applied Acarology

, Volume 15, Issue 2, pp 117–121 | Cite as

Experimental transmission ofCowdria ruminantium (Rickettsiales) by the American reptile tickAmblyomma dissimile Koch, 1844

  • F. Jongejan


A Senegalese isolate of the rickettsiaCowdria ruminantium was transmitted transstadially by nymphs of the American reptile tickAmblyomma dissimile. Only eight nymphs, fed as larvae on a Saanen goat reacting to heartwater, were required to transmit fatal heartwater to another susceptible goat.

SinceA. dissimile usually feeds on snakes, iguanas and lizards in central America, the tick is not considered to play a significant role in the transmission of heartwater between ruminants. However, the tick could play a role in maintaining a rickettsial reservoir in reptile populations, since it has been shown that an African reptile can be a subclinical carrier ofC. ruminantium, infective to vector ticks.


Significant Role Experimental Transmission Vector Tick Saanen Goat Reptile Population 
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Copyright information

© Elsevier Science Publishers B.V 1992

Authors and Affiliations

  • F. Jongejan
    • 1
  1. 1.Dept. of Parasitology and Tropical Veterinary Medicine, Institute of Infectious Diseases and Immunology, School of Veterinary MedicineUniversity of UtrechtUtrechtNetherlands

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