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Selected Publication:

Type of publication: Doctoral Thesis
Type of document:

Year: 2009

Authors: G├Âtsch, Sandra

Title: Arthropoden-├╝bertragene Infektionskrankheiten bei Hunden auf den Kap Verden.

Source: Dissertation, Vet. Med. Univ. Wien, pp. 90.


Advisor(s):

Joachim Anja

Vetmed Research Units:
Institute of Parasitology


Graduation date: 20.10.09


Abstract:
In February 2008 an epidemiological field study on arthropod-borne infections in dogs was carried out in Praia, the capital city of Cape Verde. For this purpose a total of 130 dogs were included in the study. Of these, 94.6 % were infested with ticks. Altogether, 1293 ticks of the genus Rhipicephalus (in all evaluated cases R. sanguineus) were collected. Examination for haemotropic parasites was performed via microscopic analysis of blood smears, polymerase chain reaction (PCR) and/or serology. Lymph node fine needle aspirates were screened for Leishmania infantum infections in 20 dogs with enlarged lymph nodes. Investigations revealed two species of protozoa (Babesia canis vogeli and Hepatozoon canis), antibodies against leishmaniae, and two species of rickettsiae (Anaplasma platys and Ehrlichia canis). In 101 dogs (77.7 %) pathogens or their DNA were detected and 88 dogs (67.7 %) were positive for Babesia canis antibodies. The PCR examination for H. canis was positive in 83 dogs (63.9 %), for E. canis in 34 dogs (26.2 %), for A. platys in 10 dogs (7.7 %) and for B. canis in 5 dogs (3.8 %). All the lymph node aspirates were tested negative in the Leishmania infantum PCR, but 2 dogs with clinical signs suggestive of leishmaniosis (from which no lymph node material was available) had low titres in serology. B. canis, H. canis, E. canis, A. platys and their vector tick R. sanguineus are endemic to Cape Verde and can be present in dogs in a high prevalence, whereas the presence of leishmaniae was not confirmed. Local dogs are well adapted to these pathogens and show only mild clinical signs. These results outline the risk of importing tropical canine diseases when Capeverdian stray dogs are taken to Central Europe.

Keywords:
dog / Rhipicephalus sanguineus / Babesia canis / Babesia gibsoni / Ehrlichia canis / Hepatozoon canis / Anaplasma platys / Leishmania / Cape Verde


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