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30 novembre 2016

Biologists watch speciation in a laboratory flask [Phys]

Biologists have discovered that the evolution of a new species can occur rapidly enough for them to observe the process in a simple laboratory flask.

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29 novembre 2016

Espèce invasive : des fourmis d’Éthiopie vont-elles conquérir le monde ? [Futura-Sciences]

Les fourmis Lepisiota canescens font partie désormais du club très fermé des fourmis formant des supercolonies. C’est ce qu’ont découvert des scientifiques qui étudient les petites forêts résiduelles qui entourent des églises orthodoxes en Éthiopie. Selon eux, elles ont les qualités d’une espèce invasive prête à conquérir le monde.

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28 novembre 2016

The sparrow with four sexes [Nature - News Feature]

Elaina Tuttle spent her life trying to understand the bizarre chromosome evolution of a common bird — until tragedy struck.

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25 novembre 2016

From sea to summit : plant colonisation of the land [New Phyt Blog]

When plants moved from water onto land, everything changed. Nutrients were scavenged from rocks to form the earliest soils, atmospheric oxygen levels rose dramatically, and plants provided the food that enticed other organisms to expand across the terrestrial world.

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25 novembre 2016

Beavers given native species status after reintroduction to Scotland [The Guardian]

Large populations of wild beavers living in the southern and western Highlands of Scotland are to be allowed to expand naturally after ministers granted them protected status.

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