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Rev. Soc. Bras. Med. Trop ; 41(3): 252-256, maio-jun. 2008. ilus, tab
Article in Portuguese | LILACS | ID: lil-489741

ABSTRACT

Realizou-se um inquérito malacológico em criadouros, permanentes e temporários, no bairro de Piedade, Jaboatão dos Guararapes, Pernambuco, entre novembro de 2006 e novembro de 2007 com o objetivo de conhecer a fauna malacológica dessa localidade, bem como o potencial de transmissão da esquistossomose mansoni. Além de Biomphalaria glabrata (Say, 1818), foram coletados moluscos Drepanotrema cimex (Moricand, 1837), Pomacea sp e Melanoides tuberculatus (Muller, 1774). Do total de Biomphalaria glabrata coletado, 1.490 exemplares encontraram-se vivos, sendo que 74 (5 por cento) estavam positivos para Schistosoma mansoni. O maior número de moluscos capturados e todos aqueles positivos para Schistosoma mansoni foram coletados na estação anual das chuvas. Foi observada também a presença de outras larvas de trematódeos infectando os moluscos Biomphalaria glabrata. Pertencentes às famílias Strigeidae e Diplostomatidae, apresentam, a primeira vista, morfologia que pode levar a confusão com as cercárias do Schistosoma mansoni, tornando-se indispensável seu conhecimento para o diagnóstico diferencial do agente causador da esquistossomose.


A malacological survey of permanent and temporary breeding sites was conducted in the Piedade neighborhood of Jaboatão dos Guararapes, Pernambuco, between November 2006 and November 2007, with the aim of determining the malacological fauna at this locality, along with the potential for Schistosomiasis mansoni transmission. In addition to Biomphalaria glabrata (Say, 1818), the molluscs Drepanotrema cimex (Moricand, 1837), Pomacea sp and Melanoides tuberculatus (Muller, 1774) were collected. Among the specimens of Biomphalaria glabrata that were collected, 1,490 were found alive, and 74 (5 percent) were positive for Schistosoma mansoni. The largest numbers of molluscs collected, and all of the specimens that were positive for Schistosoma mansoni, were collected during the annual rainy season. The presence of larvae of other trematodes infecting the Biomphalaria glabrata molluscs was also observed. These trematodes were from the families Strigeidae and Diplostomatidae and, at first sight, they presented morphology that could lead to confusion with Schistosoma mansoni cercariae. Thus, knowledge of these trematodes becomes essential for the differential diagnosis of the etiological agent for schistosomiasis.


Subject(s)
Animals , Biomphalaria/parasitology , Disease Vectors , Schistosoma mansoni/isolation & purification , Brazil , Population Density , Seasons , Schistosomiasis mansoni/transmission
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