OCCURRENCE OF EIMERIA SP. IN ZENAIDA AURICULATA, TRAP-CAPTURED IN LONDRINA, PARANÁ
Autor(es): ALESSANDRA TARODA, LUIZ DANIEL DE BARROS, BEATRIZ DE SOUSA LIMA NINO, DAUTON LUIZ ZULPO, IVO ALEXANDRE LEME DA CUNHA, MERCIA DE SEIXAS, SERGIO TOSI CARDIM, VICTOR BITTENCOURT DUTRA TABACOW, THAIS AGOSTINHO MARTINS, MILTON HISSASHI YAMAMURA, ODILON VIDOTTO, JOÃO LUIS GARCIA
OCCURRENCE OF EIMERIA SP. IN ZENAIDA AURICULATA, TRAP-CAPTURED IN LONDRINA, PARANá
» Área de pesquisa: PROTOZOOLOGIA
» Instituição: Universidade Estadual de Londrina-PR
» Agência de fomento e patrocinadores: CAPES NO. 1345/11
Eimeria sp. are intracelular protozoan parasites which life cycle occurs into enterocytes. The aim of this study was to report the occurrence of Eimeria sp., in Zenaida auriculata, from Londrina, Paraná. Thirty nine adult specimens of Z. auriculata were trap-captured and the fecal samples were collected. Willis & Mollay technique were conducted to verify the presence of oocysts of protozoans parasites. The feces were also stored in 2.5% potassium dichromate solution. Eimeria sp. imature oocysts were put at 37°C in water bath until they sporulated. After the sporulation, the mature oocysts were measured. Four (10.25%) pigeons were positive for Eimeria sp. The sporulation started after 36-38h hours. The Eimeria oocysts were spheroid to subspheroid 22-27m x 22-27m. Their double-layered wall is smooth and colorless, 1m thick. Micropile, polar granule, and oocyst residuum were absent. Four elongated sporocysts 12-14 mm x 6-9 mm, with smooth, thin and single-layered wall, each containing 2 sporozoites. A little Stieda body nipple-like was present, but there was no apparent sub-Stieda body. Sporocyst residuum composed of numerous small granules uniformly concentrated in the middle of the sporocyst. Sporozoites were elongate, slightly curved and lied head-to-tail in the sporocyst. Each sporozoites had a clear refractile body in the posterior end and a smaller refractile body in the anterior region. There is just one study about Eimeria in Z. auriculata, which described a new species called Eimeria zenaidae. The morphometric characteristics of Eimeria isolated in the present study were different from E. zenaidae sp. such as, the presence of polar granule, and a large Stieda body. The evaluation of Eimeriidae coccidia species is very important not only to contribute to taxonomy and phylogeny, but to estimate the risk of infection of others pigeons species that could be living at the same environment of Z. auriculata.
