Navegando por Autor "OLIVEIRA, Wanessa Batista Lima"

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Acesso aberto (Open Access)
Molecular detection of Trypanosoma evansi (Kinetoplastida: Trypanosomatidae) in procyonids (Carnivora: Procyonidae) in Eastern Amazon, Brazil
(Universidade Federal do Pará, 2016-04) MATOS, Paulo Cesar Magalhães; SANTOS, Rafaelle Cunha dos; SOUZA, Paulo Geovani Silva; SAMPAIO JUNIOR, Francisco Dantas; MOURÃO, Fábio Rodrigo Paixão; OLIVEIRA, Wanessa Batista Lima; GABRIEL, Áurea Martins; GONZALEZ MONTEIRO, Silvia; CAVALCANTE, Gustavo Góes; SCOFIELD, Alessandra; BARROS, Flávia de Nazaré Leite
The present study aimed to diagnose the natural infection of captive and free-living procyonids with Trypanosoma evansi in the states of Amapá and Pará, Brazil. From February 2012 to August 2013, whole blood samples and blood smears were obtained from 45 free-living procyonids and from nine procyonids kept in captivity in wild life refuges and zoobotanical parks in the states of Amapá and Pará. Whole blood samples were collected and kept at -20ºC for the detection of T. evansi DNA by PCR using the RoTat 1.2 forward and RoTat 1.2 reverse primers. In addition, the blood smears were processed and examined for the presence of trypomastigote forms of T. evansi. T. evansi DNA was detected in 18.52% (10/54) of the procyonids, namely, in captive crab-eating raccoons and captive and free-living coatis in Pará State. No trypomastigote forms were observed in the blood smears. DNA from T. evansi was detected in P. cancrivorus and N. nasua in Pará State, being this the first such report in P. cancrivorus.
Acesso aberto (Open Access)
Occurrence of eggs and oocysts of gastrointestinal parasites in passerine birds kept in captivity in Para State, Brazil
(Universidade Federal do Pará, 2016-12) MATOS, Paulo Cesar Magalhães; SILVA, Michele Bahia do Vale; SOUZA, Paulo Geovani Silva; LIMA, Danillo Henrique da Silva; MORAIS, Rodrigo de; FARIAS, Diana Maria de; ALVARENGA, Laís Cristina Oliveira; GABRIEL, Áurea Martins; OLIVEIRA, Wanessa Batista Lima; CAVALCANTE, Gustavo Góes; AMARAL, Alessandra Scofield
he objective of this study was to detect helminth eggs and protozoan oocysts in samples of feces from birds of the order Passeriformes in Para State, Brazil. Fecal samples were collected individually from 403 passerine birds seized and kept in captivity in Para State. Samples were processed by the double centrifugation technique in saturated sucrose solution and the coccidial oocyst-positive samples were submitted to sporulation in potassium dichromate 2.0%. Helminth eggs and/or protozoan oocysts were observed in 43.18% (174/403) of the fecal samples examined. Coccidial oocysts were detected in 93.68% (163/174) of the positive samples, whereas helminth eggs were observed in 10.34% (18/174) of the positive samples. Oocyst sporulation occurred in 43.56% (71/163) of the samples, and only Isospora spp. oocysts were detected. Nematode eggs of the superfamilies Trichostrongyloidea (4.60%; 8/174), Ascaridoidea (0.57%; 1/174), and Trichuroidea (0.57%; 1/174) were diagnosed in the positive samples. Cestoda eggs were diagnosed in 2.87% (5/174), whereas Trematoda eggs were detected in 2.30% (4/174) of positive samples. Passerine birds seized and kept in captivity in the visited local presented parasitism by intestinal helminths and protozoan, with a predominance of infection with coccidia of the gender Isospora.