Molecular characterization of Cryptosporidium spp. from fecal samples of birds kept in captivity in Brazil.
The aim of this study was to determine the prevalence of Cryptosporidium species and genotypes in birds kept in captivity in Brazil. A total of 966 samples from 18 families of birds was collected and stored in 5% potassium dichromate solution at 4 degrees C until processing. Oocysts were purified in Sheather sugar solution following extraction of genomic DNA. Molecular analyses were performed using nested-PCR for amplification of fragments of the 18S subunit of rRNA gene and of the actin gene. Amplification of Cryptosporidium DNA fragments was obtained in 47 (4.86%) samples. Sequencing of amplified fragments and phylogenetic analyses allowed the identification of Cryptosporidium baileyi in a black vulture (Coragyps atratus), a domestic chicken (Gallus gallus domesticus) and a saffron finch (Sicalis flaveola); Cryptosporidium galli in canaries (Serinus canaria), a cockatiel (Nymphicus hollandicus) and lesser seed-finches (Oryzoborus angolensis); Cryptosporidium meleagridis in a domestic chicken (G. g. domesticus); Cryptosporidium parvum in a cockatiel (N. hollandicus); Cryptosporidium avian genotype I in a canary (S. canaria) and an Indian peafowl (Pavo cristatus); Cryptosporidium avian genotype II in ostriches (Struthio camelus) and Cryptosporidium avian genotype III in a cockatiel (N. hollandicus) and a peach-faced lovebird (Agapornis roseicolis).
Nakamura
Alex Akira
AA
Departamento de Medicina Veterinária Preventiva e Saúde Animal, FMVZ, USP, São Paulo, SP, Brazil.
Simões
Daniel Castendo
DC
Antunes
Rômulo Godik
RG
da Silva
Deuvânia Carvalho
DC
Meireles
Marcelo Vasconcelos
MV
D000199:Actins / Q000235:genetics; D000818:Animals; D000836:Animals, Zoo / Q000469:parasitology*; D001715:Bird Diseases / Q000469:parasitology*; D001717:Birds; D001938:Brazil; D003457:Cryptosporidiosis / Q000469:parasitology / Q000662:veterinary*; D003458:Cryptosporidium / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D005243:Feces / Q000469:parasitology; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics
D000199:Actins; D012337:RNA, Ribosomal, 18S