Snail transmitters of schistosomiasis and other mollusks of medical and economic importance at the Simplício Queda Única Hydroelectric Plant, Southeast Brazil

Fernandez, Mônica Ammon; Silva, Elizangela Feitosa da; Esteves, Rafael Alves; Thiengo, Silvana Carvalho

doi:10.1590/0037-8682-0334-2017

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Associado a isso, tem-se a migração de pessoas infectadas para os centros urbanos, contribui para a disseminação do parasita para regiões antes livre do parasita (GOMES et al, 2016). Em síntese, entre os assuntos abordados pelos autores em relação à transmissão da esquistossomose, destacaram-se a situação de falta de saneamento básico e condições insalubres de moradia como um novo cenário de transmissão, a presença do caramujo, as mudanças epigenéticas do caramujo e a falta de conhecimento da população sobre a transmissão (GOMES et al, 2016;ENK, 2007;FERNANDEZ et al, 2018).…”

Section: Resultsunclassified

Literatura científica brasileira sobre a pesquisa da esquistossomose mansônica: acervos, vieses e direções futuras

Leite

Miranda

Silva

et al. 2022

CONJ

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O presente estudo de cienciometria objetivou conhecer a produção científica brasileira sobre a esquistossomose ao longo de vinte anos, procurando conhecer as revistas que mais publicaram sobre o assunto, as instiuiçoes e os pesquisadores envolvidos. Foram encontradas 991 publicações, sendo analisadas 214 pois atendiam aos critérios de inclusão. Nos primeiros dez anos, se destacaram as formas clínicas da parasitose e, posteriormente, assuntos como a transmissão, epidemiologia, controle e tratamento passaram a ser prioridades. Os periódicos que mais publicaram artigos sobre a temática foram, as Memórias do Instituto Oswaldo Cruz e a Revista da Sociedade Brasileira de Medicina Tropical. Diversos autores destacaram-se, além das instituições Universidade Federal de Minas Gerais, Centro Pesquisa René-Rachou e o Centro de Pesquisa Aggeu Magalhães (FIOCRUZ). Constatou-se que as pesquisas brasileiras ainda podem ser consideradas escassas e centralizadas, em especial quando se atesta a existência de áreas históricas endêmicas de esquistossomose, sua expansão para outras regiões e a constante carência de saneamento básico em extensas áreas do país.

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Section: Resultsunclassified

Literatura científica brasileira sobre a pesquisa da esquistossomose mansônica: acervos, vieses e direções futuras

Leite

Miranda

Silva

et al. 2022

CONJ

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“…Planorbid snails belonging to the Biomphalaria genus are the intermediate hosts of S. mansoni (Barbosa et al, 2017;Simões et al, 2017). In Brazil B. glabrata, B. straminea and B. tenagophila have been detected naturally infected with S. mansoni (Fernandez et al, 2018;Palasio et al, 2019). These snails are present in extensive areas in Brazil and can be found in freshwater collections with speeds below 30 cm/s, streams, ponds, swamps, river backwaters, reservoir margins or artificial collections (irrigation and drainage ditches, water tanks and even small dams) (Ohlweiler et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Larval trematodes hosted by Biomphalaria straminea in the Brazilian semiarid region: implications for schistosomiasis control

D.G.S.¹

2022

Trop Biomed

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The present study aimed to identify larval trematodes shed by snails found in water bodies used by urban communities in a former schistosomiasis endemic area in the state of Piauí, in the Brazilian semiarid region. A malacological survey was performed followed by analysis of the cercariae shed by the snails after light exposure. Biomphalaria straminea specimens (n=1,224) were obtained from all seven collection sites. Cercariae shed by snails were i) single tailed, in which one type of cercariae was identified (Echinostoma cercariae), and ii) with bifurcated tail (brevifurcate apharyngeate distome, brevifurcate pharyngeate distome, and longifurcate pharyngeate distome [strigeocercaria]). Brevifurcate apharyngeate distome were further examined and the presence of spikes in swimming membranes enabled the identification of Spirorchiidae cercariae in all individuals, demonstrating the absence of cercariae compatible with Schistosoma mansoni. Nevertheless, the accurate diagnosis of S. mansoni circulation in former endemic areas is still necessary.

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“…There is no systematized information about native mollusk fauna nor exotic regarding Brazilian reservoirs, and the few existing reports about this group are restricted to large dams, mainly those related to hydroelectric plants (Thiengo et al 2005, Fernandez et al 2018, Rocha et al 2011, Fernandez et al 2014. Likewise, studies focused on mollusk fauna of small and medium-sized reservoirs in the Brazilian Northeast built for water storage are still scarce (e.g., Santos & Eskinazi-Sant'anna 2010, Almeida et al 2018, Medeiros et al 2018.…”

Section: Introductionmentioning

confidence: 99%

Freshwater mollusks from three reservoirs of Piauí, northeastern Brazil

et al. 2020

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The pronounced dry season determines the characteristics of the semiarid region of Brazil. Numerous small reservoirs are built to overcome this condition, accumulating multiple uses and causing important changes in the landscape and the local biota. Considering the limited amount of information about the malacofauna of reservoirs, mainly in the Northeast region of the country, this inventory provides a list of mollusks from three important reservoirs located in the city of São Julião, state of Piauí. The collections were carried out monthly between May/2017 and April/2018, sampling a total of 11,149 mollusks, corresponding to the species Melanoides tuberculata (Müller, 1774) (n = 9,724), Biomphalaria straminea (Dunker, 1848) (n = 1,361) and Pomacea lineata (Spix, 1827) (n = 64). The richness of mollusks from the three reservoirs was low, similar to those described in studies conducted in other regions of Northeast Brazil. There was a significant difference in the abundance of M. tuberculata and B. straminea among the studied reservoirs. These environments are not connected and are installed in urban and rural areas, presenting different ecological conditions. The relationship between the human population and the reservoirs, associated with the lack of sanitation, increases the risks of spreading waterborne diseases besides the development of environmental imbalance by the introduction of exotic species.

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Snail transmitters of schistosomiasis and other mollusks of medical and economic importance at the Simplício Queda Única Hydroelectric Plant, Southeast Brazil

Cited by 3 publications

References 7 publications

Literatura científica brasileira sobre a pesquisa da esquistossomose mansônica: acervos, vieses e direções futuras

Literatura científica brasileira sobre a pesquisa da esquistossomose mansônica: acervos, vieses e direções futuras

Larval trematodes hosted by Biomphalaria straminea in the Brazilian semiarid region: implications for schistosomiasis control

Freshwater mollusks from three reservoirs of Piauí, northeastern Brazil

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