Contribui??o ao conhecimento dos hemoparasitas de Didelphis marsupialis L., 1758 e D. albiventris Lund, 1841, no Brasil: Babesia ernestoi sp. n. (Piroplasmida: Babesiidae)

Autor: Freire, Nicolau Mau?s da Serra
Přispěvatelé: Neitz, Wilhelm Otto Daniel Martin, Rezende, Hugo Edison Barboza de, Massard, Carlos Luiz, Neitz, Otto Daniel Martin
Jazyk: portugalština
Rok vydání: 1976
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UFRRJ
Universidade Federal Rural do Rio de Janeiro (UFRRJ)
instacron:UFRRJ
Popis: Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2020-10-19T14:38:59Z No. of bitstreams: 1 1976 - Nicolau Mau?s da Serra Freire.pdf: 414528 bytes, checksum: 42698e75020d43512e7929da2fd88c89 (MD5) Made available in DSpace on 2020-10-19T14:38:59Z (GMT). No. of bitstreams: 1 1976 - Nicolau Mau?s da Serra Freire.pdf: 414528 bytes, checksum: 42698e75020d43512e7929da2fd88c89 (MD5) Previous issue date: 1976-11-29 In Didelphis marsupialis and D. albiventris from the States of Par?, Rio de Janeiro and S?o Paulo - Brasil, which had been reared in captivity at the Universidade Federal Rural do Rio de Janeiro, harboured a natural infection of a hematozoan Babesiidae. The parasite, seen in blood films and impression smears of organs, stained with Giemsa, was studied morphologically and biologically by experimental transmission, to only animals the same genus. Additional observations were condected on several wild-caught marsupiais, some which were treated with Dexametasona (a cortisone preparation) while other, were splenectomized. Parasitic relapses followed as evidenced by the appearance of intraerythrocytic parasites. The infection could also readily be demonstrated in the brain and visceral organs of these animals at autopsy. The organism was also found in blood and tissue smears prepared from entire untreated animals. Since the scrutiny of the literature failed to reveal the presence of a similar parasite in member of the order Marsupialis, it is considered that this a new Babesia spp. for which the name Babesia ernestoi is proposed in memorian to Ernesto Par?-Ass? da Serra Freire Em Didelphis marsupialis e D. albiventris procedentes dos Estados do Par?, Rio de Janeiro e de S?o Paulo, mantidas em cativeiro, com gaiolas teladas, na Universidade Federal Rural do Rio de Janeiro, Observou-se a presen?a de um hematozo?rio Babesiidae. O parasita, encontrado em esfrega?os sangu?neos impress?o de ?rg?os, os corados pelo m?todo de Giemsa, foi estudado morfologica e biologicamente. A transmiss?o experimental foi conseguida somente entre indiv?duos do mesmo g?nero e exacerbada sua virul?ncia atrav?s do "stress" dos hospedeiros, com dexametas ona ou pela esplenectomia. Foram verificados os ?ndices de parasitemia e sua presen?a intrapsiados: concluiu-se tratar de uma nova esp?cie d e Piroplaseritroc?tica em diversos ?rg?os internos dos animais necromorisa: Babesiidae, inclu?da no grupo das grandes babesias, patog?nica somente para D. marsupialis e D. albiventris, para a qual foi proposto o nome Babesia ernestoi, em mem?ria de Ernesto Par?-Ass? da Serra Freire.
Databáze: OpenAIRE
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