How Hoverflies Spawn Maggots that Sweeten Your Oranges | Deep Look
HTML-код
- Опубликовано: 21 ноя 2022
- Oblique streaktail hoverflies zip from bloom to bloom wearing a wasp costume to avoid getting eaten. But it’s all for show - they don’t even have stingers! Their fierce maggots, on the other hand, devour hundreds of insect pests. As they gorge, they help keep orange trees safe from disease.
Take the 2023 PBS Survey: to.pbs.org/pbssurvey2023g
DEEP LOOK is an ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.
---
Entomologist Nic Irvin, at the University of California, Riverside, has found that the maggots of oblique streaktail hoverflies eat more than 400 Asian citrus psyllids in the week before they transform into pupae.
Orange growers despise Asian citrus psyllids, which spread a destructive bacterium when they feed on the sap of citrus trees.
The bacterium, Candidatus Liberibacter asiaticus, causes a disease known as citrus greening or huanglongbing. Infected citrus trees make green, bitter fruit and eventually die.
Irvin has planted alyssum, a plant with fragrant white flowers, in orange groves near Riverside. The alyssum attracts adult oblique streaktail hoverflies that feed on its pollen and then lay their eggs on orange trees under attack by Asian citrus psyllids. When hoverfly maggots hatch out of the eggs, they devour the psyllids. In one experiment, Irvin found that having alyssum near orange trees reduced by 10% the number of Asian citrus psyllids on them.
--- Are hoverflies good for the garden?
Yes, hoverflies help backyard gardeners too. They pollinate flowering plants. And their maggots feed on aphids, a common pest of vegetables.
--- How do hoverflies fly?
Hoverflies fly like tiny helicopters - they can hover, fly straight up and down and backward and turn in almost every direction, said Karin Nordström, who studies hoverflies at Flinders University in Australia.
“Seeing them come in and land on a flower, it’s really beautiful,” she said, “because it’s such a controlled landing.”
---+ Find additional resources and a transcript on KQED Science:
www.kqed.org/science/1980847/...
---+ More great Deep Look episodes:
This Bee Gets Punched by Flowers For Your Ice Cream
• This Bee Gets Punched ...
Born Pregnant: Aphids Invade with an Onslaught of Clones
• Born Pregnant: Aphids ...
This Freaky Fruit Fly Lays Eggs in Your Strawberries
• This Freaky Fruit Fly ...
---+ Shoutout!
🏆Congratulations🏆 to these fans on our Deep Look Community Tab to correctly answer our GIF challenge!
TheWhiteScatterbug
Cesalia Floof
DizzyDragon
---+ Thank you to our Top Patreon Supporters ($10+ per month)!
Burt Humburg
Karen Reynolds
Daisuke Goto
Allison & Maka Masuda
David Deshpande
Chris B Emrick
Tianxing Wang
Wade Tregaskis
Companion Cube
Mark Jobes
Blanca Vides
Laurel Przybylski
Kevin Judge
Aurora
monoirre
Anastasia Grinkevic
Titania Juang
Syniurge
Supernovabetty
Roberta K Wright
El Samuels
KW
Jessica Hiraoka
Carrie Mukaida
Jellyman
Mehdi
Nicky Orino
Cristen Rasmussen
Cindy McGill
Noreen Herrington
SueEllen McCann
Laurel Przybylski
Shelley Pearson Cranshaw
Caitlin McDonough
Kelly Hong
Nicolette Ray
Louis O'Neill
Jeremiah Sullivan
Elizabeth Ann Ditz
TierZoo
Levi Cai
Silvan
Delphine Tseng
Kenneth Fyrsterling
---+ Follow Deep Look and KQED Science on social:
/ deeplookofficial
/ deeplook
Instagram: / kqedscience
Twitter: / kqedscience
---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, Calif., serves Northern California and beyond with a public-supported alternative to commercial TV, radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios. Deep Look is a project of KQED Science, the largest science and environment reporting unit in California. KQED Science is supported by the Dirk and Charlene Kabcenell Foundation, Campaign 21 and the members of KQED.
#hoverflies #asiancitruspsyllids #deeplook 
Наука
as someone in so cal growing native milkweed and raising monarchs, THESE GUYS ARE A GRACE FROM GOD!!!! my plants get INFESTED with aphids and these little hoverflies lay their eggs and their babies eat them right up!!! they dont even attack my monarch caterpillars they are literally the best AND help pollinate my flowers too for more milkweed seeds!
Oh so cal? Ur one of those kinds of people then
@@operationsearchgate3072I’m from SoCal and not everyone is from LA and talks like that. I’m in SoCal in the mountains where it snows.
Also hoverflies can be friendly, just put out your finger and it might land on it
@@operationsearchgate3072 you are such a sad sack. I hope you get over your terminal need to make yourself feel like you're better than everyone else. 😂
jesus incarnate fr!!
Hoverflies are defenders of the apple industry in Ontario. Similar to these guys, they're attracted to aphid colonies on fruit trees, and their larvae can eat several hundred aphids by the time they pupate. They'll also eat certain species of caterpillars, mites, and scale. They're friendly pest-controlling pollinators. I had some on my sand cherry in the summer during an aphid infestation. Between them and the ladybugs, they cleared it up completely.
That's really cool. I wish I could do some natural pest control but those insects are not available in my area. The pests are infecting my hibiscus plant. Moreover they are protected by ants.
@@suspikachu3110 but what are the pests that are infecting your hibiscus plant
@@Electroblade360 the same ones shown in the video. I forgot their names .
@@suspikachu3110 most likely psyllids or aphids. But dont worry if you dont have hoverflies! You can also use ladybugs to eliminate the aphid population!
Wow that's so amazing, I didn't knew those tiny little hoverflies are the one protecting the sweet and sour oranges I love to eat in winter 😋🥰.
Yes they are!
There are many "check and balances" Spiders eat flies/other bugs etc.
@@videodude4 That's rude. Don't the spiders know that other bugs have hopes and dreams too?
@@dl1083 Spiders are not like humans.
circle of life
Hoverflies are such a fascinating insect family! I feel like a lot of people still mistake them for bees/wasps these days or don't even know about them in the first place.
And so many sizes, colors and shapes!
Didn't knew about them!
:D
The Hover flies appreciate the misidentification lol
You're right. As soon as I saw this video, I realized that the some of the bees I've been seeing aren't really bees
There are many orange trees where I live (Spain) and I don't know now it it's bees or hoverflies D:
I find it especially neat how they even mimic the abdominal movements of wasps and bees to sell that disguise all the better.
Love these guys. They're intensely curious. Had a group of them as my little campmates on a trip a few years back, and they were just fascinated by anything, and everything I was doing. Made my day, every day to have them greet me every morning.
when i was "helping" my dad and grandpa haul scrapstuff, a bunch of hoverflies kept flying up to and on me, theyre so cute!!
I’ve noticed that bugs and arthropods that rely on their sight are intensely curious once they realize you’re not dangerous. Jumping spiders for example just look at you with those big puppy dog eyes of them.
Still seeing your comments everywhere. Lol.
0:34 that's so cool that each hoverflies species have their own little theme
Little works of art!
In my experience these flies are also much smarter compared to houseflies. While the houseflies were stopped by the screen of the window stiles (the windows that open up-and-down) one hoverfly either knew that the screen would block it and know there is a space in between the window stiles for it to go through. It did exactly what its called, it hovered up the gap where the screen blocked it and inside my room. It all happened in a few seconds. It crawled on the glass to get out however, I think it has done this before.
Amazing!
I think they're adorable, honestly. If you're peaceful around them, they'll chill on your hand. Just hold it out. You can feed them sweet things. They're harmless little buddies. I think it's funny how they fly into peoples faces, it's like they're trying to scare us, but it's pretty obvious they aren't wasps with their flying method.
Very cool!
Wow, I had NO idea hoverflies had predatory larvae. That's nuts. They're one of my favorite insects.
Then you will LOVE tomorrow’s episode.
I'm so used to thinking of maggots as carrion eaters, glad to know some are arboreal climbers that make their own fresh carrion!
Wow, this is so neat! I’ve seen hover flies around but aside from knowing they weren’t about to sting me, not much else. The maggots kind of remind me of ladybugs attacking other insects that are eating a plant we want to keep healthy. Cool security force too!
I love the focus on insects recently- and I particularly appreciate the light y’all portray them in. They’re such incredible animals and deserve more attention
This has got to be one of the coolest insects ever.
You have no idea how long I have been waiting for you to do a video on hoverflies. The world needs to know about these.
We agree, Sammy!
Absolutely love these little guys! I've always loved just sitting in the garden watching their enchanting little dancing flights, snapping between random coordinates like a broken path in a video game, then holding dead still without a sound before darting to the next spot. Since moving to a city apartment, the first thing I did was set up bunches of pots full of Alyssum and other small white flowers like Chamomile, Erigeron and Gypsophila with the sole purpose of attracting them to my balcony and much to my delight, it works like a charm. Queen Anne's Lace (basically fancy carrot flowers) and other Apiaceae family members also work a charm to get the Hoverflies dancing in your garden. The balcony might be small but there's almost always one staking out some turf on my tiny flower garden and it makes me very happy.
Here in Adelaide, the two most common species (and almost identical in appearance) are the Common Hoverfly/Common Halfband (Melangyna viridiceps) and the Yellow-Shouldered Stout Hoverfly (Simosyrphus grandicornis) with the former having been the main species back in my old garden in Tasmania.
These are absolutely amazing little insects, they’re babies are used as forms of natural pest control in plants. Loved seeing these guys or their babies walking around on my flowers
Only last saturday I found these and didn't know what they were. I was at our community garden and noticed these curious little insects, head and wings of flies, but bee-colored. Good to know what they are and what they do. I hope they take care of our fruiting trees as well.
Always liked these flies, I liked how cool they flew around the flower bushes. Some even land on you and stare
I love how the ant tries to muscle in protecting the pests & just gets a venomous bite in return.
Some of the ants vital juices was also sucked out. In its head. Disables the attacker fast enough to avoid more ants coming to the rescue. Brain went first. Now if they were about ten feet long...we'd be in trouble.
they are insanely cool to watch from a distance, they look frozen in time just suspended in the air because of how perfectly they can hover
I was always fascinated by hoverflies , so many different colors and patterns that make each sub-species look like a completely unrelated insect , not to mention they got some incredible flight skills
How crazy is nature?! Thanks DeepLook and the camera crew for these incredible shots 👏
3:13 nearly gave me a heart attack. These creatures are absolutely fascinating.
I do a little bit of gardening and I love the hoverflies that come by. The larva of the flies also eat alot of other pests so hoverflies are really helpful to the plants
So let me get this straight, a pollinator that eats aphids and even push argentine ants away ?? This is the greatest species !
For over 3 decades I thought they were tiny bees. How refreshing it is to know what they truly are.
Nice one! I love these little mimics. when the flower flies stomachs are empty their bodies are extremely flat, but full of nectar it swells up like a balloon.
Very cool observation - will be looking for that.
@@KQEDDeepLook fax
Insects always disgust me
But deep look have changed my perspective on these amazing creatures
Thnks DL
Yay! This comment makes our morning. :-) You are welcome. #inspo
So hyped to see a video on one of my favorite insect families! I LOVE syrphids!
I love how the ecosystem works!
I want one as a friend 😭❤️ always loved them and how curious they are!
Grow allyssium. Grow a lot. They'll come.
Don't wear deodorants and fragrances except vanilla. BOOM! You're popular!
I've seen them on sunflowers too. They don't smell like vanilla though .. but if you do they'll fly to you.
Choose your friends wisely and good luck. Make lots of friends.
I don’t feel safe around those things I got stung once
@@samhero1199 they don't have stingers, you probaby mistook a bee or a wasp for a hoverfly.
I always love a good hero story! Nature is so unbelievably great! There is so much going on right under our busy little noses. That why we need you Deep Look. How would I ever know that there was a hero fly out there?!?
Thanks Tracy!
Yay, Laura's back!
Her voice makes watching any creepy crawlies awesome.
I've seen them in dense populations drinking from flowers and they were so loud! Literally thought they were bees for a sec
Gotta love the relentless appetite
The maggot ripping it's prey off the plant at 3:34 is like a horror film monster
Love this content! I can never get enough of Deep Look! 😊✨
Glad you enjoy it Joey Joe!
Fascinating! It's not often you see murderous, predatory maggots. More often we're used to the decomposer maggots or the leaf-eating caterpillars :o
Love your content!! I love holding my hand out for them to land on my children also like to do that. Keep up the great work!
Awesome! Thank you!
I love this! We had learned about how impactful citrus greening and the psyllids that spread it in my plant pathology class this semester. Love seeing a biological control to this devastating pathogen
I love when they show up in my garden! Very curious little things that will check you out before landing in your hand to rest :)
Love this! More videos about the positive impact of insects please.
The older I get the more fascinating insects become. Such a cool creature to exist.
Entomology is a fascinating world. Deserves our deeper looking.
Thank you Deep Look team for letting us know!
This channel is always so interesting. Learning about insects always fascinates me.
They’re so fun to watch. It’s like you can see their little brains working when they fly around
I love getting notified in the morning about a new video. Gives me something nice to watch right before work. Thank you
Glad to hear it Brandon!
i see them everywhere yet i never wondered what their lifecycle was like, this is amazing
Excellent content, as always. I, selfishly, wish these videos were longer. They suck me in to get me interested in the subject and then the video is done. I can imagine that videos this detailed take a lot of effort to film, but they are always so interesting that I don’t want them to end so quickly.
Definitely just wanted to get to see more closeups of them eating lol, that was really wild. The vid itself wasn't too short, just the action was. I think that's what you're feeling. A big buildup for a small release lol.
Agree I love watching the high quality close up video of the myriad of fascinating insect behaviour that while occurring all around us, remains mainly hidden.
I always marvel at the Hoverflies during summers in MN. I did not know their larvae was so important!
Brilliant content. Thank you!
Never cease surprising the viewers is deeplook. Bizarre, somehow an eerie world of bugs' war looks like a horror movie. Very intriguing content as usual. Poops looked tasty, rather beautiful in appearance. Soldier ant cut no ice on a larva in a rescue mission. This is unexpected. A contract breached. Thanks for the post.
By the way, was it you, Laura?
This channel is AMAZING!
Amazing ! I love these agriculture / insect symbiosis videos !
Could there be a deep look episode on figs and fig wasps ? It would be cool to see the whole lifecycle ❤
Man, love your videos. They’re so well done. 👍🏻
Thanks FJ!
They look so unassuming it’s amazing to see taking a closer look just how much this insect does for in habitat I love your videos thank you❤
You’re welcome!
What a fantastic nature based approach
Another great video - the cilids were really interesting
I love this channel so much
So cool to see someone working on adding more biological/cultural controls in the great wat against the acp and hlb! I bet alyssum blooming in a citrus grove would add wonderful notes to the citrus bloom scent too!
Their camouflaje really works i remember saying as a kid "look, a baby wasp!"
I love the pattern on their abdomen! Like a mosaic on their backs!
Thank you for the video!
That narrator be precious. The voice, the speech rhythm, the trained inflection, way too good, must protect. For the swarm!
3:13
Okay, that's just savage 😂
I am extremely grateful for these little hoverflies because I love oranges
Wow! Laura is back! My favorite narrator
oh no way, one of the good narrators is back! tysm for finally responding to feedback :)
Pollinator AND pest control. What a rockin fly
Never knew these are so useful, but are they dependent on just one kind of feed? Also very happy having Laura's perfect voice back.
Have always loved watching their acrobatic flying.
I did not know these amazing hoverflies that sweeten my orange, amazing and interesting insect, there so cute, amazing video Deep.
I've always liked hoverflies but I didn't know thier larval stage was so interesting
the hoverflys look soooo cute! and i never know that hoverflys protect and sweeten the tast of oranges❤ im a new sub
Omg he’s so cute! Look at his eyes, so fascinating!
I love this channel!
Hello... Here I'm back after a short gap.
You nailed it guys, incredible piece of information..!!!!
Glad you liked it!
Thanks for the animation reference!
Simply fascinating creatures, nature such a beautiful thing, Deeplook doea an amazing job capturing that 😊💯
i love this channel so much
The music was sooooo good in this
I always love seeing these little mimics On my flowers ❤
My favorite narrator is back! Nice to hear from you again Laura! 🥰💕
I watched most of your videos and I’m learning so much about bugs! Like mosquito has 6 needles! And others😃
Well that explains something I saw MANY years ago... maybe?
I saw a green caterpillar like thing at my uncle's lakehouse on a railing that looked like it was eating an aphid-like bug. I wonder if that was a type of hoverfly maggot.
This title is nightmare fuel LOL
Kudos on accuracy and cleverness!
Not gonna lie, we spent a lot time on the title!
It flies so cute🤩
haha, at first I was like, oh only 800 views... and then I saw the upload 7 min ago xD
I love this channel, I always click when I see Deep Look has uploaded something.
Thank you for the hard work.
You are most welcome. :-)
theyare so cool! they kept looking at me kind of flew around me and then flew away, they are so curious. i think they are quite cool after watching this video. also i thoght that they were wasps. they are quite smart and also are so good at hovering. at first i thought they were annoying wasps but i changed my mind after this video. Thanks deep look!
These little buggers were so friendly in 3rd grade. Would fly up to us in the summer and try to suck our skin for sum reason. Cute!
oh no...... i think i misindentified a lot of times before.
amazing video by the way
Finally you have a video about a wasp being a fly and a fly being a wasp, thank you so much
Thank you to whoever made the 'poop' tag, and to whoever nodded in approval when they did it
This makes me so happy
Never knew the larva of these harmless insect could even deal with the notorious Argentine ants. Nature truly is full of surprises!!!
Oh we call these sweat flies! I never knew their real name. Just always heard sweat flies. They're cute. That's awesome
The photography/ivideography is excellent. Much better than the narration
I love hoverflies, they’re by far one of my favorite species
Families*
I love the Syrphids!!!! Along with the Asilids, my favorite Flies!!! ❤️❤️❤️
Thanks! What are some examples of Asilids?