Environmental contamination by parasite forms was studied on a university campus in the municipality of Pelotas, Rio Grande do Sul. Soil samples were analyzed using the modified Caldwell & Caldwell technique to identify parasite forms. Nematode eggs were detected in 62% of the samples. Among the parasites detected, eggs of Toxocara spp. and Ancylostomatidae were the most prevalent parasites in the studied area throughout the study period. The results demonstrated that there is significant environmental contamination, thereby representing a risk of zoonotic infection for humans frequenting the study area.
The objective of this study was to identify the main chemical components of the essential oil of Cuminum cyminum L. (cumin) and of the fixed oils of Bertholletia excelsa (Brazil nut) and of Helianthus annuus (sunflower seed). As well as testing the three oils and three different commercial synthetic acaricides against engorged females of Rhipicephalus (Boophilus) microplus in order to explore their acaricidal efficacy. Six different concentrations of the oils (200, 100, 50, 25, 12.5 and 6.25 mg/mL) and the active principles were evaluated with the Adult Immersion Test (AIT). The two main chemicals components of C. cyminum L. were the cuminaldehyde and the γ-terpinene. In both B. excelsa and H. annuus were the linoleic and oleic acid. C. cyminum L. showed high acaricidal activity (100%) over the engorged females and on their reproductive characteristat from the concentration of 100 mg/mL. B. excelsa and H. annuus had low acaricidal activity (39.39% and 58.75% in the concentration of 200 mg/mL respectively). The amidine and the pyrethroid (35.12% and 1.50% respectively). It can be concluded that the oil of C. cyminum L. may be a phytoterapic alternative for the cattle's tick control.
Avestruzes são aves originárias da África. No Brasil são encontradas em criatórios comerciais cujos números estão aumentando devido ao seu alto potencial reprodutivo e valor econômico dos seus produtos. Consequentemente houve um aumento nas parasitoses produzindo danos à produtividade e até mesmo a morte dessas aves. Com o objetivo de identificar os nematóides que parasitam avestruzes provenientes de criatórios comerciais no estado do Rio Grande do Sul, foi coletado o sistema digestório de 34 aves durante o abate em frigorífico. Foram examinados os conteúdos e as mucosas do intestino delgado, ceco e intestino grosso; mucosas do esôfago, pró-ventrículo e moela. Os nematóides encontrados foram clarificados em lactofenol e identificados como Libyostrongylus douglassii com 82,35% de prevalência, Libyostrongylus dentatus com 79,41% de prevalência e Codiostomum sthrutionis com 5,8% de prevalência. L. dentatus tem seu primeiro registro para o Estado, assim como o parasitismo simultâneo por L. douglassii e L. dentatus em um mesmo hospedeiro. Registra-se também, pela primeira vez, a infecção por C. struthionis em avestruzes de criatórios comerciais no estado do Rio Grande do Sul, Brasil.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.