ResumoEste estudo teve como objetivo registrar o parasitismo gastrintestinal em queixada (Tayassu pecari) no Brasil. Foram colhidas amostras de fezes, de três exemplares mantidos em cativeiro no estado do Rio Grande do Sul. As amostras foram analisadas pelas técnicas de centrífugo flutuação com sulfato de zinco e coloração de kinyon para pesquisa de parasitos. Em todos os animais observou-se uma infecção mista por cistos de Giardia sp. e Balantidium sp., além de oocistos de Cryptosporidium sp e Eimeria sp. Este estudo relata o primeiro registro destes quatro gêneros de protozoários em T. pecari.
Palavras-chave: Giárdia, Cryptosporidium, Eimeria, Balantidium
AbstractThe aim of this study was to report the gastrointestinal parasitism in white-lipped peccary (Tayassu pecari) in Brazil. Fecal samples of three animals kept in captivity in the state of Rio Grande do Sul were collected. Samples were analyzed by the centrifugal flotation technique with zinc sulfate and by the Kinyon staining method. All animals showed mixed infection by cysts of Giardia sp. and Balantidium sp. and by oocysts of Cryptosporidium sp. and Eimeria sp. This is the first report of these four genera of protozoa in T. pecari.
Effective alternatives to anthelmintic treatment of nematode parasite infections of sheep are required because of the high prevalence of drug resistance. Within this context, the nematode-trapping fungus Duddingtonia flagrans has become a valuable component of various integrated control strategies. Toward this objective, a small quantity of lyophilized D. flagrans chlamydospores (10(6) spores per animal) was administered to sheep in a one-year plot study. Animals grazing on native pasture were divided into two homogeneous groups and were kept in 1-ha paddocks in the southern region of Brazil. The oral administration of chlamydospores led to a significant reduction (p<0.05) in the number of nematode eggs per gram of feces and in the larval availability on herbage (difference of 37.6%) in comparison to the control group. Control animals needed to be dewormed three times during the experiment, whereas the fungus-treated animals maintained a low parasite load, independent of seasonal variation. Although D. flagrans cannot serve as a panacea for nematode parasite control of livestock, it represents a significant advance toward rationalizing the use of endoparasitic drugs in small animals.
O puma (Puma concolor) é um felídeo encontrado em diversas zonas ecológicas do Brasil e Américas. Em pumas já foi reportado parasitismo por carrapatos ixodidae e endoparasitos de diferentes gêneros e espécies. Porém, pesquisas envolvendo a fauna silvestre brasileira ainda são poucas. Portanto, este estudo visou a avaliar o parasitismo gastrintestinal em P. concolor mantido em cativeiro na região central do Rio Grande do Sul. Foram analisadas fezes de um puma adulto através dos métodos exame direto, centrífugo flutuação com sulfato de zinco e kinyon para pesquisa de parasitos. Nas amostras constatou-se a presença de infecção mista por oocistos de Cryptosporidium sp. e ovos Trichuris sp., além de oocistos de coccídeos sugestivos de Toxoplasma gondii ou Besnoitia sp. Com base nos resultados, pode-se concluir que o puma é um hospedeiro em potencial desses parasitos, apresentando quadro clínico assintomático. No entanto, cabe pesquisar o verdadeiro papel desse felídeo no ambiente relacionado à disseminação desses parasitos.
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