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Study highlights correlations between violent death and substance use
Publicado em 07 de dezembro de 2018
A group of researchers at the University of São Paulo’s Medical School (FM-USP) in Brazil recently published the results of a study on the links between alcohol and drug use and the occurrence of violent deaths.
The study supported by São Paulo Research Foundation – FAPESP quantifies these links for the case of São Paulo, Brazil’s largest city. It shows that the consumption of alcohol or at least one type of drug correlated with more than half (55%) the violent deaths that occurred in [...]
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Identification of mechanisms of pesticide resistance in cattle ticks
Publicado em 13 novembro 2018The cattle tick is controlled by pesticides, invariably leading to the selection of resistant strains. In Brazil, this parasite is currently resistant to a greater or lesser extent to all the commercial pesticides used by cattle farmers. The antiparasitic drug most widely used to control cattle tick populations (as well as human parasites) is ivermectin, a broad-spectrum anthelmintic, acaricide, and insecticide. Brazil's commercial cattle herd totaled 217.7 million animals in 2017, according [...]ver notícia -
New phase proposed in the relationship between figs and wasps
Publicado em 28 agosto 2018In an article published at journal Acta Oecologica, Brazilian biologist Luciano Palmieri Rocha has proposed a new phase of the development cycle of fig trees (Ficus carica) and their specific pollinators, fig wasps from the species Blastophaga psenes – one of the most studied cases when analyzing the evolution of mutualism. According to Palmieri, the cycle's new (and sixth) phase doesn't relate directly to the development of the fig but rather to its role in the development of dozens of [...]ver notícia