Cited by 36Parasitic Diseases Research and TreatmentHelminth infection and controlResearch on Leishmaniasis Studies

Detection of Canine Vector-Borne Filariasis and Their Wolbachia Endosymbionts in French Guiana

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Laidoudi, Younes, Marié, Jean-Lou, Tahir, Djamel, Watier-Grillot, Stéphanie, Mediannikov, Oleg, Davoust, Bernard·2020·Microorganisms

Abstract

In French Guiana, canine heartworm disease is well known, but the diversity of filarial parasites of dogs remains largely unknown. A total of 98 canine blood samples from Cayenne and Kourou were assessed by a blood wet mount preparation, heartworm antigen test and molecular exploration of filarioid and Wolbachia DNAs, followed by a multiplex species-specific qPCR’s identification and a subsequent sequencing analysis. Thereafter, a phylogeny based on maximum likelihood was carried out to facilitate specific identification. Five dogs were microfilaremic. Heartworm antigens were detected in 15 (15.3%) dogs. Of these, six (6.1%) were considered as occult infections as neither microfilariae nor Dirofilaria immitis DNA were detected. The 11 (11.2%) D. immitis isolates corresponded to a low virulent strain. Six of the D. immitis isolates were positive for Wolbachia endosymbionts of D. immitis belonging to the clade C DNA. Acanthocheilonema reconditum DNA was detected in 3 (3.1%) samples. Of these latter, one was found co-infected with the Brugia sp. genotype and the DNA of the clade D of the Wolbachia endosymbiont of Brugia species. This latter was also detected in two filarioid DNA-free samples. Finally, two samples were positive for Cercopithifilaria bainae genotype, which is distinct from those identified in Europe. The present study highlights the urgent need to implement chemoprophylaxis associated with anti-Wolbachia drugs to control these potential zoonoses.

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Crossref · 10.3390/microorganisms8050770

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  • In France, recent data show presence of canine heartworm in the centre of the country, with prevalence rates between 29.41-35.2%.

    “In France, while until 2011 no indication of expansion from the south, traditionally endemic, was published, there are recent data showing presence of canine heartworm in the centre of the country, with prevalence rates between 29.41–35.2% [9,42,43].”

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Authors
Laidoudi, Y., Marié, J.-L., Tahir, D., Watier-Grillot, S., Mediannikov, O., & Davoust, B.
Affiliations
  • Aix-Marseille Université (FR)
  • Animal Epidemiology Working Group of the Military Health Service, 13014 Marseille, France
Corresponding author
Davoust, Bernard
Venue
Microorganisms
Publisher
MDPI AG
Published
2020-05-21
Volume
8
Issue
5
Pages
770
ISSN
2076-2607 (ISSN-L)
OpenAlex
W3027110558
Cited by
36
References
61
Citations by year
2026: 4 · 2025: 7 · 2024: 3 · 2023: 6 · 2022: 7 · 2021: 4 · 2020: 5
FWCI
0.72
Type
journal article
Language
en
Open access
Locations
  • Microorganisms (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Zoetis
  • Agence Nationale de la Recherche (10 -IAHU-03, ANR-10-IAHU-0003, ANR-10IAHU-03, ANR-10)
  • Conseil Régional Provence-Alpes-Côte d'Azur
Topics
  • Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
  • Health Sciences › Veterinary › Small Animals › Helminth infection and control
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Research on Leishmaniasis Studies
Keywords
canine filariasis, Wolbachia endosymbiont, Dirofilaria immitis, Acanthocheilonema reconditum, Brugia, occult infection, co-infection, zoonoses, chemoprophylaxis, phylogenetic identification, French Guiana

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