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Bees coordinate strategy for defending colony
Publicado em 05 setembro 2018
The Brazilian stingless bee Tetragonisca angustula (jataí in Portuguese) deploys a different strategy for defending its nests from other social insect species. In addition to posting sentinels at the nest entrance, as do most social insects, colonies of this species also have guards that hover near the entrance all the time.
A study by researchers in the Department of Entomology and Acarology of the University of São Paulo’s Luiz de Queiroz College of Agriculture (ESALQ-USP) in Brazil and [...]
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Coastal strip in Brazil sheds new light on early farming
Publicado em 05 setembro 2018Humans may have been cultivating plants on a narrow coastal strip in Brazil as far back as 4,800 years ago, according to a new study. An international team of scientists, led by researchers at the University of York, analysed the teeth and bones of ancient human remains found at the site in Southern Brazil. The results reveal that the individuals, who lived around 4,800 years ago, were eating a diet rich in carbohydrates, suggesting that they may have cultivated plants like yams and sweet [...]ver notícia