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The worms that grow their own food

posted by Jason Kottke   Oct 27, 2016

A species of worm in the north-east Atlantic has been observed farming. They plant grass seeds in their burrows and feed on the sprouts when they start growing.

Ragworms (Hediste diversicolor) were thought to consume the seeds of cordgrass, an abundant plant in the coastal habitats where they live. But the seeds have a tough husk, so it was a mystery how the worms could access the edible interior.

Zhenchang Zhu at the Royal Netherlands Institute for Sea Research in Yerseke and his team have now discovered the worms’ surprising trick: they bury the seeds and wait for them to germinate, later feeding on the juicy sprouting shoots.

I, for one, welcome our new farming worm overlords.