The Loxosceles gaucho recluse spider (left) can kill a heavily armored Mischonyx cuspidatus harvestmen (right) by disabling its weak spots, a new study finds. Here the spider is inflicting a long bite to a joint on the harvestman’s third leg.
J.M.G. Segovia et al/Animal Behaviour 2015
Two mutations allowed soil bacteria (Pseudomonas fluorescens) to re-evolve flagella: One pumped up levels of a protein than controls nitrogen uptake, and one that switched that protein’s job to flagella production control.
Ninjatacoshell/Wikimedia Commons (CC BY-SA 3.0)
AFTERMATH Intimate mating concerns among Anopheles mosquitoes may have inadvertently pushed the evolution of greater ability to spread human malaria.
Sam Cotton
