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4 octobre 2018

Tropical frogs found to coexist with deadly fungus [Phys]

A new study led by University of Maryland researchers suggests that, within a decade, the species remaining in El Copé developed the ability to coexist with chytrid fungus. In a field study spanning the years 2010-2014, the researchers found that frogs infected with the fungus survived at a nearly identical rate compared with uninfected frogs.

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4 octobre 2018

Ces microorganismes qui nourrissent et protègent les plantes [The Conversation]

Parmi ces microorganismes, on compte les mycorhizes (du grec mukês signifiant champignon et de rhiza pour racines) : des champignons en association symbiotique avec les racines de plantes.

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4 octobre 2018

Couples showing off : Songbirds are more passionate in front of an audience [Phys]

Both sexes of a songbird called the blue-capped cordon-bleu intensify courtship performances that involve singing and dancing in the presence of an audience, especially if it is a member of the opposite sex, an international team of researchers has discovered.

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4 octobre 2018

Evolution : Genetic relatedness doesn’t matter much in forming society [Phys]

In evolutionary biology, fitness refers to an organism’s reproductive success and propagation of its genes. When researchers at Hokkaido University studied the foraging and nesting behaviors of the eusocial species Lasioglossum baleicum, commonly known as the sweat bee, they found that the fitness was more a result of the bees’ cooperative behaviour than it was a result of their genetic similarity.

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4 octobre 2018

Certaines caractéristiques des taches du girafon sont transmises par sa mère [Sciences & Avenir - Animaux]

A quoi servent les taches des girafes ? Ces motifs sont-ils héréditaires ? Une équipe de chercheurs a apporté des éléments de réponse à ces questions dans une nouvelle étude parue dans le journal scientifique PeerJ.

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