| Anurans as paratenic hosts in the transmission of Hepatozoon caimani to caimans Caiman yacare and Caiman latirostris. | |
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MedLine Citation:
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PMID: 21808978 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Prevalence of Hepatozoon caimani has been reported in 76% of caimans Caiman yacare from the Pantanal region. Culex (Melanoconion) spp. mosquitoes were recently identified as natural vectors of this parasite. However, culicids are not typically eaten by crocodilians, suggesting that the main transmission route is through ingestion of insectivorous vertebrates, such as anurans. The susceptibility of wild frogs Leptodactylus chaquensis, Leptodactylus podicipinus and Scinax nasicus to infection by H. caimani was verified. Wild-caught anurans were force fed with sporulated oocysts from laboratory-bred Culex (Melanoconion) mosquitoes. Frogs were killed 30 days postinfection, and their internal organs were fed to caimans C. yacare and Caiman latirostris. Cystozoites were identified in fresh liver impression smears of L. chaquensis. C. yacare fed on anuran organ presented gametocytes in peripheral blood circulation between 74 and 80 days postinoculation (dpi). Gametocytes were also verified in C. latirostris fed on the internal organs of L. podicipinus and S. nasicus between 60-70 and 69-75 dpi, respectively. Since frogs used in experiment are sympatric with C. yacare and C. latirostris and may occur in the diet of these caimans, the results suggest these amphibians are paratenic hosts in the natural transmission cycle of H. caimani in Pantanal. |
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Authors:
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Lúcio André Viana; Priscilla Soares; Jhonatan Eber Silva; Fernando Paiva; Marcos Eduardo Coutinho |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-2 |
Journal Detail:
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Title: Parasitology research Volume: - ISSN: 1432-1955 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8703571 Medline TA: Parasitol Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Laboratório de Ecologia de Vertebrados, Departamento de Ecologia, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, 20541-000, Rio de Janeiro, Rio de Janeiro, Brazil, lucviana74@gmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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