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18 septembre 2017

There are hardly any old fish left in the ocean – and that’s bad [New Scientist]

There are not just fewer fish in the sea : there are disproportionately fewer old fish. A study of fisheries in the seas around the US and Europe has found that their populations of ageing fish have been reduced by an average of 72 per cent.

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15 septembre 2017

Giraffes could have evolved long necks to keep cool [Nature]

Another explanation offered for one of animal kingdom’s most distinctive features.

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15 septembre 2017

Ancient amphibian had mouthful of teeth [Phys]

In research published online in a recent issue of PeerJ, an open access journal, Professor Robert Reisz, Distinguished Professor of Paleontology at UTM, explains that the presence of such an extensive field of teeth provides clues to how the intriguing feeding mechanism seen in modern amphibians was also likely used by their ancient ancestors.

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15 septembre 2017

Pour échapper aux braconniers, les éléphants marchent la nuit et se cachent le jour [Le Monde - Afrique]

Une étude menée au Kenya révèle que les pachydermes, animaux normalement diurnes, adaptent leur comportement en fonction de la menace humaine.

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13 septembre 2017

Back from the dead—how to revive a lost species [Phys]

The exciting discovery, outlined in Scientific Reports today, describes how the discovery was made after an international expedition to a remote volcano on Isabela Island in the Galápagos found many giant tortoises with high ancestry from the extinct Floreana Island tortoise (Chelonoidis elephantopus).

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