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20 septembre 2017

Quand les écosystèmes saturent [CNRS Le Journal]

La prolifération des algues vertes sur certaines plages bretonnes témoigne d’un phénomène de pollution en pleine recrudescence sur la planète : l’eutrophisation. Une expertise scientifique est publiée aujourd’hui pour faire la lumière sur les origines et les conséquences de ce syndrome d’indigestion des milieux naturels.

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19 septembre 2017

Secrets of butterfly wing patterns revealed by gene hacking [New Scientist]

Butterfly wings have been given make-overs by scientists who tweaked a “painting gene” to change their patterns and colours.
The research has major implications for understanding how the so-called “rules of life” – genetics and evolution – shape biodiversity.

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19 septembre 2017

The Same Pesticides Linked to Bee Declines Might Also Threaten Birds [Audubon]

Neonicotinoids are washing off of their host seeds and into water bodies—threatening not just aquatic insects but the birds that rely on them.

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19 septembre 2017

Scientists show molecular basis for ants acting as ’bodyguards’ for plants [Phys]

Though you might not think of ants as formidable bodyguards, some do an impressive job protecting plants from enemies. Now, scientists at the University of Toronto (U of T) have determined what makes some better bodyguards than others.

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19 septembre 2017

Sex and aggression linked in male mouse brains but not in female [New Scientist]

Aggression and sexual behaviour are controlled by the same brain cells in male mice – but not in females. The finding suggests that males are more likely to become aggressive when they see a potential mate than females.

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