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This study aimed at examining the prevalence of eggs and larvae of parasites – that may cause diseases to humans and other animals – in the soil of public squares located on the shore of Laranjal beaches, in the Laguna dos Patos, in Pelotas, Rio Grande do Sul state, Brazil. Four fieldwork trips – one per season – were taken to collect samples on six squares built on the shore of these beaches. Five samples of soil were collected on every square on every fieldwork trip. The material was processed by Caldwell & Caldwell’s technique. Four squares (66.7%) were positive for helminth eggs and sample positivity was 8.3% (10). Toxocara spp. and Ancylostoma spp. were the main genera found in these places. Even though prevalence was lower than the one observed by other studies which were carried out in the area, helminths with zoonotic potential were found in the soil of the squares. It should be highlighted that measures to control dogs in these areas must be implemented and public policies must be put forth to make pets’ owners and beach goers aware of the need to mitigate environmental contamination.

This study aimed to evaluate the ovicidal activity of the hydroalcoholic extract of Schinus terebinthifolia (SCH; T1) against Ancylostoma spp. and its influence of storage time in the extract stored for 36 months (T36). Eggs of Ancylostoma spp. were obtained from naturally parasitized dogs, and used for the larval hatchability test, where the eggs were exposed to T1 and T36 extracts of SCH (15-0.625 mg/mL). In T1, all concentrations inhibited more than 80% of the eggs, being 100% at concentrations between 15 and 5 mg/mL (p>0.05).At T36, all concentrations were active, even the ones between 2.5 and 0.625 mg/mL, with 100% inhibition (p<0.05), revealing that the storage time maintained the ovicidal action.By LC-MS, T36 presented ethyl gallate, myricitrin, and gallic acid as major compounds.These findings support the promising use of SCH extract as an ovicide against Ancylostoma spp., even stored for 36 months of shelf life.

This study sought to make a literature review of the medicinal plants Origanum majorana, Origanum vulgare L., Thymus vulgaris L., Cuminum cynimum L., and Rosmarinus officinalis L. with antiparasitic potential. Articles and theses were selected from the LILACS, PubMed, and Google Scholar databases, which comprised the period from 2000 to 2021 (22 years). In all, 49 studies were selected, and the majority were with the plant Origanum vulgare L. (oregano), followed by Thymus vulgaris L. (thyme). Twenty-five genera of parasites were detected, which were described being tested with phytotherapic. The nematode Haemonchus spp. was the most evaluated in these studies, followed by the parasite genera Leishmania, Trichostrongylus, and Toxocara. All plants showed antiparasitic effects, with more or less action, therefore with the potential to continue research in the search for biomolecules to control these parasites.

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