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Ants that defend plants receive sugar and protein
Publicado em 18 de julho de 2019
Biologists Laura Carolina Leal and Felipe Passos performed a series of experiments in Brazil's Northeast region - specifically in the interior of Bahia State, where the semiarid Caatinga biome predominates - to determine how plants with extrafloral nectaries interact with ants.
Extrafloral nectaries are nectar-secreting glands not involved in pollination which supply insects with carbohydrates in exchange for defense against herbivores. The nectar attracts predatory insects that consume [...]
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Tube Anemone Has the Largest Animal Mitochondrial Genome Ever Sequenced
Publicado em 12 junho 2019The tube anemone Isarachnanthus nocturnus is only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923?base pairs. The human mitochondrial genome (mitogenome), for example, comprises 16,569 base pairs. Tube anemones (Ceriantharia) are the focus of an article recently published in Scientific Reports describing the findings of a study led by Sérgio Nascimento Stamper (https://bv.fapesp.br/en/pesquisador/171695/sergio-nascimento-stampar/), a [...]ver notícia -
New study reveals growth hormone plays important role to lose weight
Publicado em 13 abril 2019According to the research published in the journal Nature Communications, scientists have discovered that growth hormone (GH) plays an important role when it comes to losing and maintaining weight. GH stimulates skeletal maturation and linear bone growth, as well as helps maintain tissue and organs throughout life, also acts directly on the brain to conserve energy when the body loses weight. "Growth hormone has been known for decades, but our discovery shows it does a lot more than was [...]ver notícia -
Fungus has decimated the populations of 501 amphibian species worldwide
Publicado emA microscopic aquatic fungus is responsible for the heaviest biodiversity loss ever found to be due to a single pathogen, according to an article published in the journal Science on March 28. The microorganism causes chytridiomycosis, an infectious disease that affects amphibians worldwide. In the past 50 years, it has caused a decline in the populations of at least 501 species of amphibians. In some cases, they have dwindled to less than 10% of their original distribution, and 91 species are [...]ver notícia