The genotyping of 25 isolates of Toxoplasma gondii from free-range chickens in the state of Bahia, Brazil, was performed by PCR-restriction fragment length polymorphism using 11 genetic markers: SAG1, 5′ 3′SAG2, alt.SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1, Apico, and CS3. The analysis revealed 8 genotypes, 3 of which had not been previously reported. Four genotypes were represented by single isolates, whereas the other genotypes were represented by 2 or more isolates. Five isolates showed mixed infections, and 2 of them were identical. None of the clonal types I, II, or III were found, but 2 isolates corresponded to the Brazilian clonal lineage BrIII. There was a single allele for the c22-8 marker. The CS3 marker demonstrated efficiency in the evaluation of virulence in mice. This study reaffirms the diverse genetic variability of T. gondii in Brazil.
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1 August 2018
Genetic Diversity of Toxoplasma gondii Isolates From Free-Range Chickens In Bahia, Brazil
Daniele S. Rocha,
Mariana G. Nilsson,
Bianca M. Maciel,
Hilda F. J. Pena,
Bruna F. Alves,
Aristeu V. Silva,
Luís F. P. Gondim,
George R. Albuquerque
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Journal of Parasitology
Vol. 104 • No. 4
August 2018
Vol. 104 • No. 4
August 2018