Licking bees and pulping trees: The reign of a wasp queen - Kenny Coogan

3,181,393 views ・ 2020-01-28

TED-Ed


Please double-click on the English subtitles below to play the video.

00:06
As the April sun rises on a pile of firewood,
0
6627
3930
00:10
something royal stirs inside.
1
10557
2868
00:13
This wasp queen is one of thousands who mated in late autumn
2
13425
4320
00:17
and hibernated through the winter.
3
17745
2230
00:19
Now she emerges into the spring air to begin her reign.
4
19975
4550
00:24
Most of her sisters weren’t so lucky.
5
24525
2310
00:26
While hibernating in compost piles and underground burrows,
6
26835
4090
00:30
many sleeping queens were eaten by spiders.
7
30925
4033
00:34
Warm winters caused by climate change led other queens to emerge early,
8
34958
4646
00:39
only to find there was no available food.
9
39604
3260
00:42
And some queens that survived the winter fell victim to the threats of spring,
10
42864
4565
00:47
such as carnivorous plants, birds, and manmade pesticides.
11
47429
4953
00:52
Our queen is the lone survivor of her old hive, and now,
12
52382
3710
00:56
she must become the foundress of a new one.
13
56092
3233
00:59
But first, breakfast.
14
59325
1918
01:01
The queen heads for a citrus grove full of honeybee hives.
15
61243
4030
01:05
The bees can be dangerous if provoked,
16
65273
2287
01:07
but right now they’re paralyzed by the morning cold.
17
67560
3143
01:10
Their hairy bodies are dripping with sugar water from an earlier feeding,
18
70703
4320
01:15
and the resourceful queen licks them for a morning snack.
19
75023
4272
01:19
Newly energized, our queen searches for a safe nesting area.
20
79295
4013
01:23
This tree hollow, safe from rain, wind, and predators, is ideal.
21
83308
5420
01:28
She chews the surrounding wood and plant fibers
22
88728
3060
01:31
to make a paper-like pulp.
23
91788
2040
01:33
Then she builds around 50 brood cells that comprise the beginning of her nest.
24
93828
5967
01:39
Using sperm stored from last fall,
25
99795
2650
01:42
the queen lays a fertilized egg into each cell,
26
102445
3533
01:45
producing as many as 12 in 20 minutes.
27
105978
3150
01:49
Within a week, these will hatch into female larva.
28
109128
3380
01:52
But until then, the queen must hunt down smaller insects to feed her brood,
29
112508
5391
01:57
all while expanding the hive, laying eggs, and defending against intruders.
30
117899
5700
02:03
Fortunately, our queen is well prepared.
31
123599
2920
02:06
Unlike bees, wasps can sting as many times as they need to.
32
126519
5168
02:11
With such a busy schedule, the queen barely has time to feed herself.
33
131687
4340
02:16
Luckily, she doesn’t have to.
34
136027
2033
02:18
When she feeds an insect to her grubs,
35
138060
2420
02:20
they digest the bug into a sugary substance that sustains their mother.
36
140480
5702
02:26
By the end of July, these first larva have matured into adult workers,
37
146182
5437
02:31
ready to take on foraging, building, and defense.
38
151619
3880
02:35
The queen can now lay eggs full-time,
39
155499
2897
02:38
sustaining herself on her worker’s spoils and their unfertilized eggs.
40
158396
5118
02:43
Although each worker only lives for roughly 3 weeks,
41
163514
3360
02:46
the queen’s continuous egg-laying swells their ranks.
42
166874
3826
02:50
In just one summer, the nest reaches the size of a basketball,
43
170700
4231
02:54
supporting thousands of workers.
44
174931
2337
02:57
Such a large population needs to eat,
45
177268
2625
02:59
and the nearby garden provides a veritable buffet.
46
179893
3358
03:03
As the swarm descends, alarmed humans try to swat them.
47
183251
4000
03:07
They even fight back with pesticides that purposefully poison wasps,
48
187251
4532
03:11
and inadvertently impact a wide-range of local wildlife.
49
191783
4821
03:16
But the wasps are actually vital to this ecosystem.
50
196604
3450
03:20
Sitting at the top of the local invertebrate food chain,
51
200054
3597
03:23
these insects keep spiders, mites, and centipedes, in check.
52
203651
4761
03:28
Wasps consume crop-eating insects,
53
208412
2610
03:31
making them particularly helpful for farms and gardens.
54
211022
3683
03:34
They even pollinate fruits and vegetables,
55
214705
2360
03:37
and help winemakers by biting into their grapes
56
217065
3180
03:40
and jump-starting fermentation.
57
220245
2640
03:42
This feast continues until autumn, when the foundress changes course.
58
222885
4681
03:47
She begins grooming some eggs into a new generation of queens,
59
227566
4360
03:51
while also laying unfertilized eggs
60
231926
2301
03:54
that will mature into reproductive males called drones.
61
234227
4558
03:58
This new crop of queens and males requires more food.
62
238785
3857
04:02
But with summer over, the usual sources run dry,
63
242642
3403
04:06
and the foraging wasps start taking more aggressive risks.
64
246045
4815
04:10
By September, the hive’s organization deteriorates.
65
250860
3770
04:14
Hungry workers no longer clean the nest and various scavengers move in.
66
254630
5394
04:20
Just when it seems the hive can no longer sustain itself,
67
260024
3460
04:23
the fertile queens and their drones depart in a massive swarm.
68
263484
5177
04:28
As the days grow colder, the workers starve,
69
268661
2950
04:31
and our queen reaches the end of her lifespan.
70
271611
2889
04:34
But above, a swarm of reproductive wasps has successfully mated.
71
274500
5221
04:39
The males die off shortly after,
72
279721
2390
04:42
but the newly fertilized queens are ready to find shelter for their long sleep.
73
282111
4692
04:46
And this woodpile looks like the perfect place to spend the winter.
74
286803
4460
About this website

This site will introduce you to YouTube videos that are useful for learning English. You will see English lessons taught by top-notch teachers from around the world. Double-click on the English subtitles displayed on each video page to play the video from there. The subtitles scroll in sync with the video playback. If you have any comments or requests, please contact us using this contact form.

https://forms.gle/WvT1wiN1qDtmnspy7