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Parasitic Cordyceps Take Over Insect's Body | 20 Years of Planet Earth | BBC Earth
Parasitic Cordyceps Take Over Insect's Body | 20 Years of Planet Earth | BBC Earth
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字幕 (40)
0:01
Like something out of science fiction,
0:04
the fruing body of the cordiceps erupts
0:07
from the ant's head.
0:11
Incredibly, 80% of all insects live in
0:15
jungles.
0:16
Few are more successful than the ants.
0:19
There can be 8 million individuals in a
0:22
single hectare.
0:24
But jungle ants don't have it all their
0:27
own way.
0:35
These bullet ants are showing some
0:38
worrying symptoms.
0:41
Spores from a parasitic fungus called
0:43
cortisps have infiltrated their bodies
0:46
and their minds.
0:54
Its infected brain directs this ant
0:58
upwards.
1:01
Then, utterly disorientated, it grips a
1:04
stem with its mandibles.
1:06
Those afflicted that are discovered by
1:08
the workers are quickly taken away and
1:11
dumped far away from the colony.
1:15
It seems extreme, but this is the reason
1:18
why.
1:21
Like something out of science fiction,
1:24
the fruing body of the cordiceps erupts
1:27
from the ant's head.
1:43
It can take 3 weeks to grow. And when
1:47
finished, the deadly spores will burst
1:49
from its tip. Then any ant in the
1:52
vicinity will be in serious risk of
1:55
death.
1:58
The fungus is so virulent it can wipe
2:01
out whole colonies of ants. And it's not
2:04
just ants that fall victim to this
2:06
killer.
2:09
There are literally thousands of
2:11
different types of cordiseps fungi and
2:14
remarkably each specializes on just one
2:18
species.
