this post was submitted on 06 May 2024
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Science Memes

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[–] weariedfae@lemmy.world 153 points 10 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.

[–] krellor@fedia.io 87 points 10 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@lemmy.zip 42 points 10 months ago (5 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?

[–] GBU_28@lemm.ee 23 points 10 months ago

Ain't just Americans

[–] pearsaltchocolatebar@discuss.online 17 points 10 months ago (1 children)

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

[–] TranscendentalEmpire@lemm.ee 13 points 10 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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[–] frezik@midwest.social 12 points 10 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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[–] numberfour002@lemmy.world 8 points 10 months ago (1 children)

Although plenty of people do it, most aren't treating their whole yard or entire garden in pesticides on a regular basis. Most people who are using pesticides are just spot treating here and there, maybe spraying their home's foundation to keep out ants and termites and things of that nature.

People who use pesticides in their lawns will have different reasons and different approaches, but some common reasons (real and imagined, I'm not defending the practice) are typically to control pests like fire ants, Japanese beetles, yellow jacket wasps, termites, fleas and other parasites, and many other things that are region specific.

And honestly, some people just don't like bugs. I think that's ridiculous, but it's way more common than you might think. Any tiny creature in their house warrants the nuclear option. A wasp nest on the underside of a deck terrifies them.

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[–] PM_Your_Nudes_Please@lemmy.world 11 points 10 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.

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[–] Willie@kbin.social 87 points 10 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.

[–] xpinchx@lemmy.world 58 points 10 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.

[–] ricecake@sh.itjust.works 12 points 10 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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[–] embed_me@programming.dev 16 points 10 months ago* (last edited 10 months ago)

Yeah probably went extinct or something.

insert doomer wojak

[–] Evil_Shrubbery@lemm.ee 77 points 10 months ago (1 children)

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

[–] slurpinderpin@lemmy.world 66 points 10 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

[–] explodicle@sh.itjust.works 23 points 10 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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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.

[–] Anticorp@lemmy.world 37 points 10 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.

[–] numberfour002@lemmy.world 35 points 10 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.

[–] fossilesque@mander.xyz 20 points 10 months ago (1 children)

They're also a water quality indicator.

[–] TheFriar@lemm.ee 12 points 10 months ago

Funny, so is your mom

[–] Ageroth@reddthat.com 34 points 10 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

[–] Prunebutt@slrpnk.net 11 points 10 months ago* (last edited 10 months ago) (4 children)

This content is not available in your country/region.

[–] LixWindoz@lemmy.world 8 points 10 months ago

Like the bugs 😭

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[–] pancakes@sh.itjust.works 9 points 10 months ago (1 children)

Wow I would not believe my eyes...

[–] samus12345@lemmy.world 10 points 10 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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[–] FreakinSteve@lemmy.world 29 points 10 months ago (3 children)

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

[–] aBundleOfFerrets@sh.itjust.works 27 points 10 months ago (2 children)

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

[–] AMDIsOurLord@lemmy.ml 10 points 10 months ago (1 children)

Not climate change, artificial illumination. As humanity spreads, it destroys more and more....

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[–] MiDaBa@lemmy.ml 23 points 10 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.

[–] RinseDrizzle@midwest.social 22 points 10 months ago (1 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.

[–] sqw@lemmy.sdf.org 19 points 10 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

[–] Anticorp@lemmy.world 8 points 10 months ago

You are! They're one of the very few sources of magic left in this world.

[–] nifty@lemmy.world 18 points 10 months ago

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

[–] Fleppensteijn@feddit.nl 9 points 10 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.

[–] daniskarma@lemmy.dbzer0.com 9 points 10 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...

[–] henfredemars@infosec.pub 9 points 10 months ago

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

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