Hemoparasites of the genus Trypanosoma (Kinetoplastida: Trypanosomatidae) and hemogregarines in Anurans of the São Paulo and Mato Grosso do Sul States - Brazil

Anais da Academia Brasileira de Ciências

Denise D.m. Leal²  Lucia H. O'dwyer²  Vitor C. Ribeiro¹  Reinaldo J. Silva²  Vanda L. Ferreira¹  Rozangela B. Rodrigues¹ 

[1] ,Unesp Instituto de Biociências Departamento de ParasitologiaBotucatu SP ,Brasil

关键词: Anuran;    hemogregarine;    Trypanosoma;    hemoparasites;    Anuros;    hemogregarinas;    Trypanosoma;    hemoparasitas;   

DOI  :  10.1590/S0001-37652009000200006

来源: SciELO

【 摘 要 】

Wild animals are exposed to numerous pathogens, including hemoparasites. The Trypanosoma and hemogregarinegroup are frequently reported as parasites in anurans (frogs, tree frogs and toads). The identification of these hemoparasites is usually made through stage observation of their morphology in the peripheral blood of the host. There areno studies, however, based on the biological cycle of these hemoparasites. The objective of the present study was toevaluate the presence of hemogregarines and Trypanosoma spp. in anurans captured in the States of São Paulo andMato Grosso do Sul- Brazil and to perform the morphological and morphometric characterization of these hemoparasites. The species of anurans examined were: Dendropsophus nanus, D. minutus, Leptodactylus chaquensis L. podicipinus, L. labyrinthicus, L. fuscus, Bufo granulosus, B. schneideri, Phyllomedusa hypocondrialis, Trachicephalus venulosus, Scinax fuscovarius and Hypsiboas albopunctatus. Of the total of 40 animals studied, four (10%)were positive for hemogregarines and eight (20%) were positive for Trypanosoma spp. Hemogregarine gamontsshowed variable morphology and, in addition to intraerythrocytic forms, extraerythrocytic forms were also observed.Extremely different forms of Trypanosoma were observed, as described in the literature, with the broad and oval forms being the most common.

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