The presence of parasitic structures in sandy soil samples from beaches located along the north coast of Rio Grande do Sul, Brazil

Josandro dos Santos da Silva; Thaís Dalzochio

doi:10.14393/BJ-v39n0a2023-63281

Authors

Josandro dos Santos da Silva Centro Universitário CNEC de Bento Gonçalves
Thaís Dalzochio Centro Universitário CNEC de Bento Gonçalves https://orcid.org/0000-0003-1095-9111

DOI:

https://doi.org/10.14393/BJ-v39n0a2023-63281

Keywords:

Beaches, Environmental contamination, Geohelminth, Helminths, Sand.

Abstract

Beaches are a source of parasite contamination because protozoan cysts and helminth eggs and larvae can remain viable in sandy soils for months. Parasitic infections are mainly related to hygiene conditions, health, and environmental education, and can affect the life quality of the population. Therefore, this study aimed to assess the presence of parasitic structures in five beaches located along the north coast of Rio Grande do Sul, Brazil. Eighty samples were collected in August and September 2020 at the beaches of Torres, Tramandaí, Capão da Canoa, Arroio Teixeira, and Arroio do Sal and processed with the spontaneous sedimentation method for microscopic analyses. The results showed that 32% (26/80) of samples were positive for the presence of parasitic structures, and there was a significantly higher frequency of positive samples in September than in August. Torres was the beach with the highest frequency of positive samples, while Arroio Teixeira and Arroio do Sal presented the lowest frequency of contamination. Nematode larvae, including hookworm larvae, were the most prevalent parasitic structures in the samples. Hence, the sandy soil from beaches must be monitored to develop programs and strategies for improving infrastructures and basic sanitation conditions, thus ensuring the health of the population.

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