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30 January 2018

Snake alarm call makes birds scan for approaching predators [New Scientist]

When we hear a sound associated with a particular object, we are primed to see that object too. The ability to visualise something in this way was once thought to be unique to humans. But some birds seem to have that ability as well, a study has found.

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30 January 2018

Une pouponnière de requins marteaux découverte aux Galapagos [Sciences & Avenir - Animaux]

Des chercheurs ont découvert une pouponnière de requins marteaux - une espèce menacée - dans l’archipel équatorien des Galapagos.

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29 January 2018

Mosquitoes remember human smells, but also swats, researchers find [Phys]

The study, published Jan. 25 in the journal Current Biology, shows that mosquitoes can rapidly learn and remember the smells of hosts and that dopamine is a key mediator of this process. Mosquitoes use this information and incorporate it with other stimuli to develop preferences for a particular vertebrate host species, and, within that population, certain individuals.

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26 January 2018

Les coraux, malades du plastique [Le Monde - Planète]

Les déchets polluant les océans multiplient par vingt les risques de pathologies pour les récifs, selon une étude internationale.

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26 January 2018

How are river ecosystems affected by regulation ? [The Freshwater Blog]

Natural variations in water flow are important for many reasons. One is that they can ‘clean’ the river bottom. Although this can be devastating for the organisms which are ripped off by a flood, or killed by a drought, such ‘cleaning’ creates open spaces for colonisation by other organisms. Disturbance by floods and droughts is – in the long run – important for maintaining biodiversity in rivers.

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