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CFZ: Daily News (Reino Unido)
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Extinction of lowland tapir and white-lipped peccary would impair forest diversity
Publicado em 08 novembro 2019
According to a team of researchers affiliated with São Paulo State University (UNESP) in Rio Claro, Brazil, the extinction of South America's two largest herbivores—the lowland tapir (Tapirus terrestris) and the white-lipped peccary (Tayassu pecari) - would cause a significant decrease in forest diversity throughout the continent.
The results of experiments that began ten years ago showed that plant communities are more diversified in areas where both species are present and [...]
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Researchers identify genes linked to sex differentiation in giant Amazon fish
Publicado em 25 junho 2019Brazilian and German scientists have completed a collaborative project to sequence and analyze the whole genome of Arapaima gigas, a giant freshwater fish known in Brazil as pirarucu and elsewhere as arapaima or paiche. Its growth rate is the fastest among known freshwater fish species. Its natural distribution covers most of the Amazon River basin in Peru and Brazil. The research led to discoveries that help determine sex at an early stage, facilitating the separation of female and male fry [...]ver notícia -
Bees coordinate strategy for defending colony
Publicado em 20 setembro 2018Source: Fundação de Amparo à Pesquisa do Estado de São Paulo 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 [...]ver notícia -
Brazilian study discovers six new species of silky anteaters
Publicado em 02 março 2018Since the pioneering description made in 1758 by Swedish naturalist and father of taxonomy Carl Nilsson Linnaeus (1707-1778), there was officially one single silky anteater species. This short-snouted, pigmy-sized anteater would then be known for its scientific name, Cyclopes didactyla, after its inclusion in the 10th edition of Systema Naturae, Linnaeus' magnum opus. It is found in tropical forests in South and Central America, as well as in the few remaining fragments of Atlantic rainforest [...]ver notícia -
Rise of male individuals in stingless bees colonies leads to queen's death
Publicado em 04 setembro 2017Queens of stingless bee species (Meliponini) face a reproductive dilemma. If they mate with males with which they turn out to share the same sex determination gene, half of their offspring will consist of males, and the colony's workforce will fall by half, given that effectively only the females are workers. In addition, males with both paternal and maternal (diploid) genetic material as a result of this unfortunate choice by the queen only consume the resources collected by workers and are [...]ver notícia -
Predatory lizard enters Brazil clandestinely-Anolis porcatus, a species native to Cuba, has been identified in several areas near the Port of Santos on the São Paulo coast - Herp Digest
Publicado em 29 março 2017It all began with a photograph of a lizard posted on Facebook in August 2015 by the Brazilian Herpetology group. It was a strange lizard that had been observed in a residential area near the Port of Santos, São Paulo State, by Ricardo Samelo, a biology student at the Santos Coast campus of the Federal University of São Paulo (UNIFESP). "Everyone in the group was excited about that photograph. It was different from any other lizard ever seen in Brazil," recalled herpetologist Ivan Prates, [...]ver notícia