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3 novembre 2016

Ant genomes rewrite history of Panama land bridge [Nature]

Genetic analysis suggests connection between the Americas emerged millions of years earlier than previously thought.

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3 novembre 2016

Female fish judge males on DIY skills, study shows [Phys]

Female fish judge males based on their ability to design nests best suited for the conditions of their environment, according to a new study by University of Leicester researchers.
In the study, which is published today, biologists at the University of Leicester, the Australian National University (ANU) and the University of Technology Sydney (UTS) have shown that low oxygen can change the way in which fish build nests, and also change the nesting preferences of female fish.

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2 novembre 2016

Les pies seraient les seuls oiseaux altruistes [Sciences et Avenir - Animaux]

Les pies sont les seuls oiseaux à venir en aide à leurs congénères sans rien attendre en retour. Au même titre que les humains et certains primates, ces oiseaux feraient preuve d’altruisme.

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2 novembre 2016

Chimp study shows how hanging out with friends makes life less stressful [The Conversation]

Now new research into the role of relationships among chimpanzees suggests that friends don’t just create a “social buffer” by helping us during stressful times. They may also reduce our overall stress levels just by being present in our lives, regulating the way our bodies manage stress-indicating hormones.

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2 novembre 2016

Elephant poaching costing African nations millions in lost tourism revenue [The Guardian]

Report estimates continent is losing out on £25m in tourism spending each year due to the illegal wildlife trade that is killing elephants for their ivory.

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