this post was submitted on 06 May 2024
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Science Memes

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[–] [email protected] 152 points 4 months ago (5 children)

Their decline has been so sad. I moved somewhere with fireflies in 2007. The first year they were everywhere. The second year less so and they were completely gone by 2010. I always tried to leave longer grassy areas for them but they were just... gone. It was so so so sad. I didn't grow up with them and that first summer was enchanted and magical.

I have great memories of walking down the road on a hot night with thousands of slowly blinking balls of light. The person who lives in that place now probably doesn't even know that fireflies are supposed to be in the area.

[–] [email protected] 86 points 4 months ago (2 children)

Lightning bugs have a multi-year lifecycle that includes living in fallen leaf matter, hunting for other bugs, before emerging in like 2-3 years. So they need places that don't haul away all of the fallen leaves/plant matter or use broad spectrum pesticides.

I've always kept all the leaves in rows along our fences for the lightning bugs to live in, which is also popular with the song birds hunting for bugs. That and don't do the broad pesticide treatments.

[–] GregorGizeh 37 points 4 months ago (6 children)

It seems insane to me that Americans use pesticides on their own garden and lawn. Do you not walk on there? have your kids and pets play outside? What are you even trying to kill with the poison?

[–] [email protected] 22 points 4 months ago

Ain't just Americans

[–] [email protected] 17 points 4 months ago (1 children)

For us it's fire ants. They'll destroy your yard if you let them.

[–] [email protected] 11 points 4 months ago (3 children)

If you're having a problem with fire ants it's likely due to overuse of broad spectrum pesticides. Fire ants have tons of natural predators, but they are usually taken out by broad spectrum pesticides a lot more effectively than the ants.

So you end up killing most of the earworms, spiders, dragonflies, and beetles, while only killing off some of the fire ants. This generally just gives the ants more room to expand

I would switch from broad spectrum pesticides and just purchase some nematodes you can spray as needed.

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[–] [email protected] 12 points 4 months ago (2 children)

How do you make your lawn a color of green that doesn't exist in nature? Checkmate, Eurotrash.

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[–] [email protected] 11 points 4 months ago

Yeah, mulching your leaves instead of bagging them is really what makes a difference for fireflies. And since suburbanization and HOAs often require (or at least heavily encourage) bagging leaves, it means the fireflies have nowhere to mature.

[–] [email protected] 44 points 4 months ago

Stopped mowing our farm, lightning bugs are back in swarms. It's great.

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[–] [email protected] 87 points 4 months ago (2 children)

I haven't seen any of these bad boys in probably over a decade. They used to be all over the place.

[–] [email protected] 59 points 4 months ago (1 children)

They like to live in piles of dead leaves. Between suburban neighborhoods having landscapers haul away yard waste and using pesticides to keep those lawns perfect, they have nowhere to live.

If you go to rural areas they're still around.

[–] [email protected] 12 points 4 months ago (1 children)

I'm not a lazy ass, I'm just doing my part for the pollinators and insect populations. By being a lazy ass and not giving a shit about yards beyond what in legally required to.

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[–] [email protected] 14 points 4 months ago* (last edited 4 months ago)

Yeah probably went extinct or something.

insert doomer wojak

[–] [email protected] 77 points 4 months ago (1 children)

Throughout my millennial decades they've gone from indigenous to childhood memories :(.

[–] [email protected] 20 points 4 months ago (3 children)

We work so hard to destroy local plants to build artificial backyards, and now our parents don't know why they don't see them anymore :(

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[–] [email protected] 62 points 4 months ago (2 children)

We used to have thousands of these in my backyard as a kid every summer. Now I rarely see them. We've done a great job at destroying our ecosystems in record time. We're so fucked

[–] [email protected] 23 points 4 months ago (2 children)

The powers that be want us to go straight from "let's vote harder" to "it's over". There's a huge range of fucked we can be - if what is lost is worth crying over, then what's left is worth fighting over.

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[–] [email protected] 11 points 4 months ago

There are still some areas where they are common, they're just more hidden now because the species is adverse to light pollution I'm pretty sure.

[–] [email protected] 44 points 4 months ago (1 children)

lightning bugs were cool.

Haven't seen em in a while now that i think about it.

[–] [email protected] 41 points 4 months ago (6 children)

Because we killed them all. Pesticides, climate change, lawns... They're dying out along with basically all bugs.

[–] [email protected] 14 points 4 months ago (1 children)

I have billions in my lawn. Just plant locals (guerilla style) and they'll be back.

[–] [email protected] 19 points 4 months ago (13 children)

Here in Appalachia they light the trees up.

Good god I’m lucky to live here. Wildlife everywhere (fuck deer though), beautiful rolling mountains all around, very few people. It’s a fucking paradise.

Well, mostly. Very backwards, super religious people. I just pay them no mind.

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[–] [email protected] 37 points 4 months ago

I was pretty freaked out the first time I saw fireflies while stationed in the South. At first I thought I was hallucinating. Then I wondered if I was seeing aliens or something. Finally one got close to my face and I snatched it out of the air. When I opened my hand there was a little bug sitting there blinking, and I was amazed. They're honestly the coolest creatures I've ever seen on this earth.

[–] [email protected] 36 points 4 months ago (3 children)

Firefly vs lightning bug

I've always called them fireflies growing up but it seems like that's dependent on where you grew up

[–] [email protected] 11 points 4 months ago* (last edited 4 months ago) (4 children)

This content is not available in your country/region.

[–] [email protected] 9 points 4 months ago (1 children)

Wow I would not believe my eyes...

[–] [email protected] 10 points 4 months ago

You would not believe your eyes

If ten million lightning bugs


'Cause I'd get a thousand hugs

From ten thousand fireflies

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[–] [email protected] 35 points 4 months ago (1 children)

Lightning bugs are really cool! Where I live, people are usually surprised to find out that there are dozens of species native to the region.

A few years ago, I went on a trip to a different part of the US and they had a species of lightning bug where they all flash synchronously. Instead of flying around the yard, blinking seemingly at random like all the lightning bugs I'd ever seen up to that point, the synchronous ones crawled around in the bushes and trees and then when they flashed, they all flashed at the same time. It was super cool to see.

Another thing I've noticed about adult lightning bugs is that the populations can vary greatly from year to year around here. We might have a year or two with large numbers of them each night during the warmest parts of the year, then a year where they are few and far between.

[–] [email protected] 19 points 4 months ago (1 children)

They're also a water quality indicator.

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[–] [email protected] 29 points 4 months ago (3 children)

They were everywhere in my old home state. I have not seen them in decades now. I miss them.

[–] [email protected] 27 points 4 months ago (3 children)

They are much less common now. Another ill-communicated effect of climate change

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[–] [email protected] 27 points 4 months ago (2 children)

Lightning bug's range is pretty wide (they can be found on every continent except Antarctica), but there are much less of them than there use to be.

As a child in the 90s, I would see so many of them flickering. But now, like many other bugs, they are dying off.

deeper-sadness

[–] [email protected] 14 points 4 months ago (1 children)

I've never seen one, though a quick online search shows that some species of firefly do exist in my small country. I guess I've just never been out in the right kind of nature at night.

I've seen them hundreds of times in movies and TV shows though, they're real common in American media.

[–] [email protected] 8 points 4 months ago (1 children)

the ones in american media tend to fly while glowing, no? i've only ever seen the quietly sit on a leaf and flash in patterns type.

[–] [email protected] 9 points 4 months ago (1 children)

American fireflies mostly glow while they are flying. The best way to catch one is to snatch it out of the air when it lights up.

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[–] [email protected] 11 points 4 months ago

Yeah I remember seeing so many of them it was like stars near the ground. These days I rarely see more than I could count on one hand at once.

The impoverished natural world being left to our children is something that often makes me sad.

[–] [email protected] 27 points 4 months ago

I was into my 30's by the time I discovered fireflies were real. I was well aware there were bioluminescent creatures in the world but I thought fireflies just reflected light until I moved to the Midwest. They are an amazing sight when you've never seen them before.

[–] [email protected] 24 points 4 months ago (1 children)

this year is a huge one for these guys in my area. walking around at dusk has been an amazing light show. i feel blessed

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[–] [email protected] 22 points 4 months ago (3 children)

Truly magical critters. Used to be at Gran's farm as a kid and catch em in your hands. Fields were just covered in em. Great memories.

Haven't been back in ages... I wonder how it's looking these days.

[–] [email protected] 22 points 4 months ago (1 children)
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[–] [email protected] 18 points 4 months ago

I love when people find out about stuff that delights them ^^

[–] [email protected] 12 points 4 months ago

Honestly I thought they were fictional creatures until I was about 16 and finally saw one. Never seen them again though.

[–] [email protected] 12 points 4 months ago

They used to be indigenous where I lived. Now they are not. I suppose they cannot live on concrete, who would have thought...

[–] [email protected] 12 points 4 months ago

Only a few years ago, I found fireflies living near me. I never knew they existed in Europe.

Government decided to level their habitat though. They're building a wildlife rescue center, ironically.

[–] [email protected] 8 points 4 months ago (2 children)

One of the more annoying things about living in Florida is that we have closely related animals that are nearly identical, but they don't have glow-butts. (At least not down in the bottom half of the state.)

I'll wait for someone from like Lakeland to say they have them.

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