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24 October 2017

The Nutshell Insects Are Increasingly Evolving Resistance to Genetically Modified Crops [The Scientist]

Resistance to insecticides produced by genetically modified crops is on the rise, according to a study published Wednesday (October 11) in Nature Biotechnology.

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24 October 2017

À propos des grandes crises d’extinction [The Conversation]

Les données de la géologie et de la paléontologie nous renseignent sur l’existence d’une soixantaine de crises d’extinction des espèces depuis 600 millions d’années environ.
Nous ne savons pas grand-chose sur ce qu’il s’est passé avant cette période, les espèces d’alors étant très peu fossilisables (en l’absence de squelettes externes et internes) et les traces éventuellement laissées ayant disparu. La géochimie nous apporte cependant de précieux renseignements, grâce au monde des bactéries et des protistes.

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24 October 2017

Parasite Can Pass Warnings between Co-Joined Hosts [Scientific American]

The plant parasite dodder grafts itself to multiple hosts, fusing the plants into a superorganism that can produce surprising effects.

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20 October 2017

Humans May Be Influencing Bird Evolution in Their Backyards [Scientific American]

Great tits in the U.K. have developed longer beaks, possibly to gain access to bird feeders.

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19 October 2017

Ants in the Amazon rainforest canopy have vastly more bacteria in their guts than ground dwellers [Phys]

UC San Diego Center for Microbiome Innovation (CMI) researchers and colleagues on the East Coast have for the first time quantified the number of bacteria in the guts of a broad range of ant species in the Amazon rainforest. They found that the primarily herbivorous ants that live in the canopy have orders of magnitude more bacteria than those that live on the ground. The work has implications for the way microbiome studies are conducted. The authors published the study July 27 in Integrative and Comparative Biology.

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