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Titre du document / Document title

Trichinella britovi etiological agent of sylvatic trichinellosis in the Republic of Guinea (West Africa) and a re-evaluation of geographical distribution for encapsulated species in Africa

Auteur(s) / Author(s)

POZIO E. (1) ; PAGANI P. (2) ; MARUCCI G. (1) ; ZARLENGA D. S. (3) ; HOBERG E. P. (4) ; DE MENEGHI D. (5) ; LA ROSA G. (1) ; ROSSI L. (5) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità, viale Regina Elena 299, 00161 Rome, ITALIE
(2) Veterinaires Sans Frontieres, 14 Av.Berthelot, 69361 Lyon, FRANCE
(3) Bovine Functional Genomics Laboratory and Animal Parasitic Diseases Laboratory, BARC East No. 1180, 10300 Baltimore Avenue, Beltsville, MD 20705, ETATS-UNIS
(4) US National Parasite Collection and Animal Parasitic Disease Laboratory, USDA, Agricultural Research Service, BARC East No. 1180, 10300 Baltimore Avenue, Beltsville, MD 20705, ETATS-UNIS
(5) Department of Animal Productions, Epidemiology and Ecology, University of Turin, via Leonardo da Vinci 44, 10095 Grugliasco, ITALIE

Résumé / Abstract

In West Africa, Trichinella infection was documented in humans and animals from Senegal in the 1960s, and the biological characters of one isolate showed a lower infectivity to domestic pigs and rodents when compared with that of a Trichinella spiralis pig isolate from Europe. To identify the Trichinella species present in West Africa, a survey was conducted in a total of 160 wild animals in the Republic of Guinea. Three Viverridae, one true civet (Viverra civetta) and two African palm civets (Nandinia binotata) from the Fouta Djallon Massif, Pilimini Subprefecture, were found positive by artificial digestion of muscle samples. Trichinella larvae from these three viverrids were identified as Trichinella britovi and no difference was detected in three examined sequences from these African isolates and the reference strain of T. britovi from Europe, indicating common ancestry, an historically continuous geographic distribution, and recent isolation for African and European populations. The detection of T. britovi in West Africa modifies our knowledge about the distribution of encapsulated species of Trichinella in Africa. Thus, Trichinella nelsoni is now considered to have a distribution limited to the Eastern part of the Afrotropical region from Kenya to South Africa. This provides a plausible explanation for the presence of Trichinella T8 in Namibia and South Africa, and further suggests that T. britovi could be the Trichinella species circulating among wild animals of Northern Africa.

Revue / Journal Title

International journal for parasitology    ISSN  0020-7519   CODEN IJPYBT 

Source / Source

2005, vol. 35, no9, pp. 955-960 [6 page(s) (article)] (43 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1971) (Revue)

Mots-clés anglais / English Keywords

Africa

;

Invertebrata

;

Helmintha

;

Nemathelminthia

;

Nematoda

;

West Africa

;

Guinea

;

Parasite

;

Geographic distribution

;

Trichinella britovi

;

Mots-clés français / French Keywords

Afrique

;

Invertebrata

;

Helmintha

;

Nemathelminthia

;

Nematoda

;

Afrique Ouest

;

Guinée

;

Parasite

;

Répartition géographique

;

Trichinella britovi

;

Mots-clés espagnols / Spanish Keywords

Africa

;

Invertebrata

;

Helmintha

;

Nemathelminthia

;

Nematoda

;

Africa occidental

;

Guinea

;

Parásito

;

Distribución geográfica

;

Trichinella britovi

;

Mots-clés d'auteur / Author Keywords

Trichinella britovi

;

Trichinella T8

;

Trichinella nelsoni

;

West Africa

;

Republic of Guinea

;

Viverridae

;

Encapsulated species

;

Localisation / Location

INIST-CNRS, Cote INIST : 15205, 35400013151833.0030

Nº notice refdoc (ud4) : 17007233



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