Parasitic Cordyceps Take Over Insect's Body | 20 Years of Planet Earth | BBC Earth

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0:01Like something out of science fiction,

0:04the fruing body of the cordiceps erupts

0:07from the ant's head.

0:11Incredibly, 80% of all insects live in

0:15jungles.

0:16Few are more successful than the ants.

0:19There can be 8 million individuals in a

0:22single hectare.

0:24But jungle ants don't have it all their

0:27own way.

0:35These bullet ants are showing some

0:38worrying symptoms.

0:41Spores from a parasitic fungus called

0:43cortisps have infiltrated their bodies

0:46and their minds.

0:54Its infected brain directs this ant

0:58upwards.

1:01Then, utterly disorientated, it grips a

1:04stem with its mandibles.

1:06Those afflicted that are discovered by

1:08the workers are quickly taken away and

1:11dumped far away from the colony.

1:15It seems extreme, but this is the reason

1:18why.

1:21Like something out of science fiction,

1:24the fruing body of the cordiceps erupts

1:27from the ant's head.

1:43It can take 3 weeks to grow. And when

1:47finished, the deadly spores will burst

1:49from its tip. Then any ant in the

1:52vicinity will be in serious risk of

1:55death.

1:58The fungus is so virulent it can wipe

2:01out whole colonies of ants. And it's not

2:04just ants that fall victim to this

2:06killer.

2:09There are literally thousands of

2:11different types of cordiseps fungi and

2:14remarkably each specializes on just one

2:18species.

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