Larvas de trematódeos de Biomphalaria spp. (Gastropoda: Planorbidae) de dois municípios do leste da Amazônia Legal brasileira

Rodrigues, João Gustavo Mendes; Miranda, Guilherme Silva; Lira, Maria Gabriela Sampaio; Nogueira, Ranielly Araújo; Gomes, Gleycka Cristine Carvalho; Cutrim, Remy Santos; Silva-Souza, Nêuton

doi:10.5123/s2176-62232017000300006

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…Their metacercariae are formed in annelids, mollusks, fish or amphibians. Considering the Northeast Region of Brazil, Rodrigues et al (2017) continent, but data on morbidity are scarce. Human infections have not been recorded in Brazil but, in paleoparasitology studies, eggs were detected in human coprolites (Sianto et al, 2005;Leles et al, 2014).…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…Clinostomidae cercariae are considered to be parasites of the oral cavity of birds, but accidental human infections have been reported 22 . Strigeidae cercariae have also been identified in the States of Maranhão, Minas Gerais and Rio de Janeiro [23][24][25] .…”

Section: Discussionmentioning

confidence: 99%

Prevalence of Infection of Biomphalaria glabrata by Schistosoma mansoni and the risk of urban Schistosomiasis mansoni in Salvador, Bahia, Brazil

Zanardi

Barbosa

Simões

et al. 2019

Rev. Soc. Bras. Med. Trop.

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Introduction: Biomphalaria glabrata is considered to be responsible for the incidence of schistosomiasis in Brazil. Therefore, surveillance of areas where schistosomiasis is prevalent is fundamental for public health planning. This study was aimed to evaluate B. glabrata populations in water bodies of the city of Salvador, determine their distribution, estimate the prevalence of Schistosoma mansoni infections, characterize shed cercariae, and identify transmission foci. Methods: Malacological surveys were carried out in 17 water collections from Salvador. Snail species were identified based on shell and mantle characteristics. Snails were evaluated for S. mansoni infection by exposure to light and via real time polymerase chain reaction (qPCR) using S. mansoni-18S rRNA subunit specific primers. Results: 1,403 B. glabrata were collected. Classical cercarial shedding indicated that 5 snails (0.4%) were positive for S. mansoni. A higher prevalence of infections was found in Horta de Saramandaia (5.5%) and Lagoa do IAT (1.9%). Non-Schistosoma larvae, such as Xiphidiocercaria, Strigeidae, Spirorchiidae and Clinostomidae, were observed in 3.2% of the snails. S. mansoni DNA was detected in 6.2% snails via qPCR. Conclusions: B. glabrata is widely distributed in Salvador, as indicated by 7 water collections associated with a risk of schistosomiasis transmission. To our knowledge, this is the first study to identify B. glabrata eliminating cercariae of Clinostomidae, Strigeidae, and Spirorchiidae in Salvador. We propose that qPCR may be employed in combination with classical cercarial shedding. Estimating S. mansoni prevalence in snails by only considering the results of light exposure method classical into account may underestimate the problem.

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“…As cercárias possuem um período de vida curto no qual emergem dos moluscos, geralmente em grande número, além disso, integram uma parte do zooplâncton disponível em ambientes límnicos. O estudo de trematódeos se justifica, principalmente, pela importância médica e veterinária de várias espécies (ESCH et al, 2002;SHUKHDEO;SHUKHDEO, 2004;RODRIGUES et al, 2017;PINTO et al, 2013). Diante disso, esse estudo tem como objetivo descrever as formas larvais de trematódeos que foram encontradas em levantamentos realizados na região nordeste, assim como, descrever os moluscos que atuam como hospedeiros intermediários e comparar as características ecológicas que estão associadas à ocorrência desses parasitos.…”

Section: Introductionunclassified

Estudo Culicidiano No Centro De Ciências Agrárias (Cca) Universidade Federal Do Piauí (Ufpi): Vigilância Entomológica

OLIVEIRA¹,

LOPES²,

SOARES³

et al. 2023

Estudos Em Parasitologia

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O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial do SCISAUDE. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica. LICENÇA CREATIVE COMMONS ESTUDOS EM PARASITOLOGIA de SCISAUDE está licenciado com uma Licença Creative Commons -Atribuição-NãoComercial-SemDerivações 4.0 Internacional. (CC BY-NC-ND 4.0). Baseado no trabalho disponível em https://www.scisaude.com.br/catalogo/estudos-emparasitologia/14

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Larvas de trematódeos de Biomphalaria spp. (Gastropoda: Planorbidae) de dois municípios do leste da Amazônia Legal brasileira

Cited by 4 publications

References 20 publications

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

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

Prevalence of Infection of Biomphalaria glabrata by Schistosoma mansoni and the risk of urban Schistosomiasis mansoni in Salvador, Bahia, Brazil

Estudo Culicidiano No Centro De Ciências Agrárias (Cca) Universidade Federal Do Piauí (Ufpi): Vigilância Entomológica

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