Abstract
Abstract: Morphological and molecular identifications were carried out for Biomphalaria occidentalis, Biomphalaria oligoza, Biomphalaria peregrina, Biomphalaria schrammi, Biomphalaria straminea and Biomphalaria tenagophila collected from 55 sites located along the upper basin of Tietê River in the Southeast Region of Brazil. Morphological analysis considered aspects of the shell, mantle, excretory organs and reproductive system. Molecular data included 122 sequences of Cytochrome C Oxidase I gene (COI). Our results showed that some shell characters, as well as other characters related to the mantle and the reproductive system, are fundamental for the identification of the six Biomphalaria species included in this study. The use of DNA barcoding together with morphological taxonomy generated more reliable results, proving to be a very useful approach, even for malacological surveillance services.
Highlights
Schistosomiasis is a neglected disease that affects regions with precarious sanitary infrastructure, such as those found in endemic areas of Brazil (Baracho 2013)
Biomphalaria straminea is widely geographically distributed in Brazil, especially in northeastern states, where it is an important intermediary host of S. mansoni (Figueiredo 1989, Ohlweiler et al 2010)
This paper aims to understand the biodiversity of Biomphalaria in floodplain areas of the upper basin of Tietê River, in order to determine the extent of S. mansoni transmission risk areas
Summary
Schistosomiasis is a neglected disease that affects regions with precarious sanitary infrastructure, such as those found in endemic areas of Brazil (Baracho 2013). Biomphalaria straminea is widely geographically distributed in Brazil, especially in northeastern states, where it is an important intermediary host of S. mansoni (Figueiredo 1989, Ohlweiler et al 2010). Biomphalaria tenagophila, albeit it presents low rates of S. mansoni infection both in the field and in the laboratory, is responsible for the schistosomiasis outbreaks in the state of São Paulo (Paraense & Corrêa 1978)
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