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Titre du document / Document title

Phylogeny of sheep and goat Theileria and babesia parasites

Auteur(s) / Author(s)

SCHNITTGER Leonhard (1) ; HONG YIN (2) ; GUBBELS Marc J. (3) ; BEYER Doreen (1) ; NIEMANN Stefan (1) ; JONGEJAN Frans (3) ; AHMED Jabbar S. (1) ;

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

(1) Department of Immunology and Cell Biology, Research Center Borstel, Parkallee 22, 23845 Borstel, ALLEMAGNE
(2) Lanzhou Veterinary Research Institute, Chinese Academy of Sciences, Xujiaping 11, 730046 Lanzhou, CHINE
(3) Division of Parasitology and Tropical Veterinary Medicine, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80165, 3508 TD Utrecht, PAYS-BAS

Résumé / Abstract

The phylogenetic relationship of Theileria and Babesia species infecting sheep and goats on the basis of their 18S RNA gene structure was addressed in the present study. For this purpose, the complete sequences of the small ribosomal RNA genes of a panel of sheep and goat piroplasm isolates, including T. lestoquardi, T. ovis, T. separata, B. ovis, B. motasi, B. crassa and several novel species, were sequenced and compared. The classification based on the established phylogenetic tree corresponded with traditional systematics and revealed that sheep/goat piroplasm species are of polyphyletic origin. The independent evolution of almost all sheep/goat piroplasms suggests that speciation may have occurred after transfer of the piroplasm-transmitting tick from a primal wild ruminant host to domestic sheep and goats. In accordance with recent reports, our study confirms the existence of at least two additional sheep/ goat piroplasm species, designated Theileria sp. 1 (China) and Theileria sp. 2 (China). The recently reported pathogenic sheep/goat Theileria sp. 1 (China) seems to be identical with a Theileria sp. isolated from Japanese serow. Furthermore, our results suggest that T. ovis represents a single species.

Revue / Journal Title

Parasitology research    ISSN  0932-0113   CODEN PARREZ 

Source / Source

2003, vol. 91, no5, pp. 398-406 [9 page(s) (article)] (33 ref.)

Langue / Language

Anglais

Editeur / Publisher

Springer, Heidelberg, ALLEMAGNE  (1987) (Revue)

Mots-clés anglais / English Keywords

Protozoa

;

Apicomplexa

;

Host parasite relation

;

Vertebrata

;

Mammalia

;

Ungulata

;

Artiodactyla

;

Infection

;

Parasitosis

;

Taxonomy

;

Babesia

;

Theileria

;

Domestic animal

;

Goat

;

Sheep

;

Protozoal disease

;

Zoopathogen

;

Parasite

;

Chemotaxonomy

;

18S-RNA

;

Nucleotide sequence

;

Phylogeny

;

Interspecific comparison

;

Mots-clés français / French Keywords

Protozoa

;

Apicomplexa

;

Relation hôte parasite

;

Vertebrata

;

Mammalia

;

Ungulata

;

Artiodactyla

;

Infection

;

Parasitose

;

Systématique

;

Babesia

;

Theileria

;

Animal domestique

;

Chèvre

;

Mouton

;

Protozoose

;

Zoopathogène

;

Parasite

;

Chimiosystématique

;

RNA 18S

;

Séquence nucléotide

;

Phylogenèse

;

Comparaison interspécifique

;

Mots-clés espagnols / Spanish Keywords

Protozoa

;

Apicomplexa

;

Relación huesped parásito

;

Vertebrata

;

Mammalia

;

Ungulata

;

Artiodactyla

;

Infección

;

Parasitosis

;

Sistemática

;

Babesia

;

Theileria

;

Animal doméstico

;

Cabra

;

Carnero

;

Protozoosis

;

Zoopatógeno

;

Parásito

;

Quimiotaxonomía

;

ARN 18S

;

Secuencia nucleótido

;

Filogénesis

;

Comparación interespecífica

;

Localisation / Location

INIST-CNRS, Cote INIST : 5859, 35400011488641.0090

Nº notice refdoc (ud4) : 15257693



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