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16 janvier 2017

Harvester ants farm by planting seeds to eat once they germinate [New Scientist]

They’ve cracked it. Small ants carry home large seeds to eat all the time, but no one knew exactly how they managed to break through the seeds’ tough exterior.
It turns out that Florida harvester ants, Pogonomyrmex badius, have developed a clever farming strategy to do so – they plant seeds, wait for them to germinate and then eat the soft spoils.

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16 janvier 2017

Ecosse : Shetland, le sanctuaire des oiseaux [GEO]

Chaque été, un million d’oiseaux de mer viennent se reproduire dans l’archipel des Sheltand, dans le nord de l’Ecosse. Un spectacle visuel et sonore étonnant. Mais pour combien de temps encore ?

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16 janvier 2017

How to be winner in the game of evolution [Phys]

A new study by University of Arizona biologists helps explain why different groups of animals differ dramatically in their number of species, and how this is related to differences in their body forms and ways of life.

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13 janvier 2017

Climate change could kill off parasites, destabilizing ecosystems [Phys]

Photogenic animals, from polar bears to people, aren’t the only creatures under threat from global climate change. A new review led by UC Berkeley suggests the phenomenon threatens parasites with extinction, which could have big consequences for ecosystems.

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13 janvier 2017

Silures géants : la fin d’un mythe [France 3 Midi-Pyrénées]

C’est l’intitulé d’une parution scientifique de l’Université Paul Sabatier de Toulouse, qui tend à démonter les idées reçues sur le plus gros poisson d’eau douce d’Europe. On lui prête des dimensions qui n’ont jamais existé.

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