In Defense of Parasitic Worms

As scientists have learned more about parasites, some have argued that many ecosystems might actually need them in order to thrive..

So if the parasites are there, you know that the rest of the hosts are there as well..

They were actually holding entire ecosystems together.. I think theres a lot of parallels between predator ecology and parasite ecology, Wood said...

As with the gray wolves in Yellowstone, scientists are just starting to recognize the profound ways that ecosystems are shaped by parasites...

Instead of making the dangerous journey themselves, they trick their infected hosts into giving them a ride by inducing a water drive, an impulse on the part of its insect host to immerse itself in water..

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