Comment by giancarlostoro
8 hours ago
Famous last words... (Edit typo:) Till we find out when its too late that they had a genuine purpose in a very specific ecosystem after we've eradicated them?
Growing up my sister got dengue, so I hate mosquitoes, she was fine, I know dengue was no joke, but I always worry we make too many assumptions as humans, only to be proven wrong by nature somehow.
Do you have the same level of concern for all other recently-extinct species, widespread habitat loss, and overall large decline in insect biomass?
Or do you reserve most of your concern for just the few species of human disease-carrying mosquito?
Kind of a genuine question, because I've observed over the years people popping in to this topic to exclaim deep concern for the potential ecological impacts of intentionally extincting a couple of species -- that most biologists reportedly agree aren't keystone species. Meanwhile, species loss continues to occur globally for a variety of reasons and yet it's still really difficult to get the average person to care very much about that.
The psychology here is peculiar and I don't understand it.
I'm much more puzzled by the many retorts to people asking about the unforeseen consequences of eradicating a whole species given how little we know about ecosystems.
Many such comments are very dumb, asking 'and how do you feel about viruses, screwworms, etc.?', but since you say this is a genuine question: mosquitoes are numerous and we know that they represent a source of food for many species (bats, birds, other insects). As far as I know, there is genuine debate among scientists about the role that mosquitoes play in their ecosystems. Everyone here has seen species of animals and plants eradicated and then being reintroduced or replaced, when we realise what role they were playing.
Again, assuming you're asking in good faith: you're asking why these commenters are so concerned while humanity is eradicating species all the time anyway: these are not the same populations... I'd wager there is a big overlap between those wondering about consequences and those taking action for the planet (not eating animal products, not flying, etc.). Similarly, I'd wager there's overlap between those posting such illogical retorts, and those eating animals at every meal and driving their car daily.
I see the same ridiculous retorts in HN debates about the condition of animals.
Okay, but we aren't talking about the eradication of all mosquitos. Approximately 10% of known mosquito species are potential carriers of human disease (https://entomologytoday.org/2022/07/26/less-than-10-percent-...), and discussions about eradication efforts generally revolve around just the Anopheles genus.
There's an excellent book on the impact of the mosquito on humanity, and a brief overview of some of that subject here: https://www.newyorker.com/magazine/2019/08/05/how-mosquitoes.... These species of mosquito are and have been one of the most significant threats to human health for all of our existence.
I don't think argument-from-ignorance should be more convincing here than it would be on any other subject. There is some debate among researchers, sure, but published biologists have been making arguments in favor of eradication for over 20 years (https://www.nytimes.com/2003/09/25/opinion/a-bug-s-death.htm...). If someone is being intellectually honest in objecting to this on the grounds of the fragility of ecosystems, then they must also be an equally loud voice against the use and manufacture of glyphosate. That one chemical alone is already having a far greater impact on insect populations, yet you can buy it at your local hardware stores.
So yeah, I genuinely don't understand the reasoning here. It feels like a dumber version of the trolley problem, where a perceived inaction that has far larger negative consequences is preferable to an action with more limited ones -- except in this case, it's not even right to describe our current impacts on ecosystems as "inaction".
I suspect that if an article were published tomorrow that found that, through some previously-unknown mechanism, the expected rise in global temperatures over the next 10 years would have a side-effect of killing all mosquito populations, that article wouldn't even make the front page of HN. Nobody much would care, aside from those few recurring voices mourning our future.
More cynically, I also suspect that since the worst impacts on human health are occurring in tropical populations, westerners find it much easier to argue in favor of protecting this particular pest.
7 replies →
I don't want any species to go extinct if I can help it, but I also understand that sometimes nature finds a way in some cases.
I'm not versed in everything with all these species, but I believe everything has a purpose, look if someone goes all out into mosquitoes and proves they had absolutely no purpose, I'll concede, I just think its worth studying these types of things. For example, some years I fight wasps near my house, then the following year, I'm fighting fire ants. If I don't eradicate one or the other, they show up the next year, every year I fight one or the other, I assume they compete with one another. I wish I could curb stomp both from ever coming back, fire ants make me bust out with sores all over, however, I know me killing them from my lawn / property isn't killing ALL of them.
In that case, it would be a very niche/small ecosystem if we're don't know about it. OTOH, the benefits of eliminating malaria and dengue are massive to ecosystems we do know about.
My fear is, what comes out of the woodworks once mosquitoes are gone? Because nature finds a way... Will it be drastically worse? Will we wish we never messed with mosquitoes afterwards?
The mosquitoes won't be gone. Just the disease carrying ones.
> My fear is, what comes out of the woodworks once mosquitoes are gone?
Well, what would come out of the outback once the rabbits are gone? Since we know the state of Australian wildlife before the rabbits, the answer is "nothing".
It's not like aedes has been so widespread all around before the last decades of wild exchanges worldwide.
How do you feel about getting rid of screwworm?
It's already happened. The concern is always about changes from the present state, no matter what the present state is. Once screwworms have already been eradicated from North America, there is concern about the impact of bringing them back.
Okay but do you think it was a bad idea at the time?
1 reply →
All ecosystems are local, and local eradication has been a thing since the first shovel was invented, and nothing too bad has happened.
If there's an abandoned lot and you eradicate the mosquitoes by removing the water filled abandoned car tires, the existing ecosystem does pretty well. In a similar way you can willfully decide to make a livestock pond either a mosquito factory or mosquito free and mosquito free has not resulted in any problems.
Local eradication programs have successfully worked for centuries, at least. What makes this story interesting is its very wide ranging and likely very expensive.
> we've been doing local eradication for a long time without much visible downside
(aside: There are lots of visible downsides to lots of local eradications of lots of things)
> this effort is interesting because it's much less local
So in other words it's very different from all the success cases you're alluding to?