Multi-locus sequence typing confirms the clonality of Trichomonas gallinae isolates circulating in European finches

被引:36
作者
Ganas, Petra [1 ]
Jaskulska, Barbara [1 ]
Lawson, Becki [2 ]
Zadravec, Marko [3 ]
Hess, Michael [1 ]
Bilic, Ivana [1 ]
机构
[1] Univ Vet Med Vienna, Clin Avian Reptile & Fish Med, Dept Farm Anim & Vet Publ Hlth, A-1210 Vienna, Austria
[2] Zool Soc London, Inst Zool, London NW1 4RY, England
[3] Univ Ljubljana, Fac Vet, Inst Poultry Hlth, Ljubljana 1000, Slovenia
关键词
Trichomonas gallinae; finch trichomonosis; emerging infectious disease; passerine birds; European finches; sequence analysis; ITS1-5.8S-ITS2; 18S rRNA; Fe-hydrogenase; rpb1; RIBOSOMAL-RNA; TETRATRICHOMONAS-GALLINARUM; DEHYDROGENASE; PREVALENCE; STRAIN; GENES;
D O I
10.1017/S0031182013002023
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
In recent years, Trichomonas gallinae emerged as the causative agent of an infectious disease of passerine birds in Europe leading to epidemic mortality of especially greenfinches Chloris chloris and chaffinches Fringilla coelebs. After the appearance of finch trichomonosis in the UK and Fennoscandia, the disease spread to Central Europe. Finch trichomonosis first reached Austria and Slovenia in 2012. In the present study the genetic heterogeneity of T. gallinae isolates from incidents in Austria and Slovenia were investigated and compared with British isolates. For this purpose comparative sequence analyses of the four genomic loci ITS1-5.8S-ITS2, 18S rRNA, rpb1 and Fe-hydrogenase were performed. The results corroborate that one clonal T. gallinae strain caused the emerging infectious disease within passerine birds and that the disease is continuing to spread in Europe. The same clonal strain was also found in a columbid bird from Austria. Additionally, the present study demonstrates clearly the importance of multi-locus sequence typing for discrimination of circulating T. gallinae strains.
引用
收藏
页码:652 / 661
页数:10
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