Fungus makes zombie ants administer ‘death bite’ at noon

Researcher David Hughes has expanded research on a parasitic fungus and its carpenter ant host. As explained in an excerpt from a previous EcoTone post: Scientists have found that the parasitic fungus Ophiocordyceps unilateralis has possibly been invading carpenter ants (Camponotus) for 48 million years. The parasite not only infects the ant, but it manipulates the ant’s behavior, driving it to bite the underside of the leaf at the...

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Scientists detect aquatic ecosystem warning signal

Scientists have found what appears to be the stress signals of a lake ecosystem that is on its way to collapse. Stephen Carpenter of the University of Wisconsin, Madison and colleagues carefully monitored the food web in a Wisconsin lake as they gradually introduced largemouth bass into the ecosystem. The researchers noticed a shift in the algae populations that were directly related to the altered feeding behavior of smaller lake...

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Inside out: cannibalism, nutrition and swarm formation in locusts

It may be difficult to picture just one locust singled out from a swarm. But believe it or not, desert locusts—insects infamous for their contribution to plagues and famine—are naturally solitary creatures. So what causes the group uprising that farmers are so familiar with? Research has shown that the internal workings of a solitary locust can affect the swarming behavior of the entire group. As described in a Live Science article,...

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