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Should We Kill All The Mosquitoes? (bbc.com)

If scientists could send Zika-carrying mosquitoes into extinction, should they do it? Several science and business journals are now exploring the question, and Slashdot reader retroworks asks if scientists will ultimately target "not just the most deadly species of the animal, but all 12 species of human-biting mosquitoes in the world, responsible for 500,000 deaths per year." The headline on today's [paywalled] Wall Street Journal article begs the question, "Why Not Kill Them All...?" [M]ore business journals are exploring private sector investments to eradicate the species of mosquito entirely, [and] most articles seem to find extinction of the indoors-attacking, dengue fever- and malaria-spreading Aedes aegypti a tantalizing prospect...

The BBC weighed the approach more carefully, noting that mosquitoes make rain forests uninhabitable (and consequences of human populations in rain forests are usually disastrous)... Will capitalism make the itch of mosquito bites be forgotten... Forever?

43 of 470 comments (clear)

  1. Law of unintended consequences, also frosty by Hognoxious · · Score: 5, Insightful

    The little bastards like the taste of me, but I'd be wary of creating a vacancy that something worse might fill.

    --
    Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    1. Re:Law of unintended consequences, also frosty by Anonymous Coward · · Score: 5, Insightful

      Before we worry about the mosquitoes, we should first exterminate all the journalists who use the phrase "begs the question".

    2. Re:Law of unintended consequences, also frosty by 93+Escort+Wagon · · Score: 5, Insightful

      Funny thing about language - if enough people start using a word or phrase incorrectly, at some point that usage becomes the correct one.

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    3. Re:Law of unintended consequences, also frosty by LinuxIsGarbage · · Score: 5, Interesting

      Does that mean if people keep using the phrase "I could care less", then the words could and couldn't officially switch meaning?

    4. Re:Law of unintended consequences, also frosty by 93+Escort+Wagon · · Score: 5, Funny

      Not if we keep shooting those people.

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    5. Re: Law of unintended consequences, also frosty by Anonymous Coward · · Score: 5, Interesting

      You can't imagine consequences because you lack any kind of knowledge about nature.

      While they are undesirable for humans, mosquitoes are the source of food of a very large number of animals. Bats, lizards, frogs, fish, birds, etc many of them survive on eating mosquitoes. Kill the mosquito and you will be killing a good number of species of animals that depend on them.

    6. Re:Law of unintended consequences, also frosty by BringsApples · · Score: 3, Insightful

      ...and why is this an idea NOW. I mean, Zika's been out for a (kind of) long time in various parts of the world, and no one ever really thought about wiping them out totally. Hell, malaria and AIDS have been out for years, completely trashing a large number of people every year. But once zika hit the US, it's "KILL ALL OF'M!!!" Typical American way of thinking and it's never ended well.

      --
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    7. Re: Law of unintended consequences, also frosty by Applehu+Akbar · · Score: 5, Informative

      You can't imagine consequences because you lack any kind of knowledge about nature.

      While they are undesirable for humans, mosquitoes are the source of food of a very large number of animals. Bats, lizards, frogs, fish, birds, etc many of them survive on eating mosquitoes. Kill the mosquito and you will be killing a good number of species of animals that depend on them.

      Not so, actually: out of the 3,500 species of mosquitos out there, only about 200 bite man. The only dire consequence of eliminating these is that great Green boogeyman of more humans surviving tropical diseases. Mosquito-eating species can easily switch to other, similar, bugs:
      http://www.nature.com/news/201...

    8. Re: Law of unintended consequences, also frosty by davester666 · · Score: 4, Informative

      Yes, there are very few things that humanity has "done" where afterwards we've gone "you know, that was very fucking stupid to do." We are very good at foreseeing the consequences and all the interactions of various courses of action and selecting the 'best' one available.

      It's what has made this world such an awesome place to be.

      --
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    9. Re:Law of unintended consequences, also frosty by The+Grim+Reefer · · Score: 5, Informative

      Does that mean if people keep using the phrase "I could care less", then the words could and couldn't officially switch meaning?

      Yes, actually it does. The term "awful" used to mean the exact opposite of what it does currently. At one time if someone was in awe of something it was awful. Now awesome has replaced it and awful means the opposite.

    10. Re:Law of unintended consequences, also frosty by SvnLyrBrto · · Score: 3, Insightful

      The difference is context.

      If you and I were having an informal discussion and I corrected you on a "begs vs. raises the question" or how you "could care less" colloquialism, I'd be kind of a dick*. The writing and editorial staff of a publication are something else. They're paid to get it right. It's their job, amongst other things, to use correct spelling and grammar, and to hold to a more educated and formal style in general. And it's entirely right to take them to task over it when they cock it up.

      *Unless of course you pronounce "espresso" with an "x", in which case you're an uncultured heathen who should be held under the steam wand as punishment.

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      Imagine all the people...
    11. Re:Law of unintended consequences, also frosty by the_povinator · · Score: 4, Informative
      Actually, Zika is pretty serious. For one thing, scientists now believe that even in those pregnant women who were infected who had *apprently* normal babies, those babies may have neurological defects that may not show up immediately. Some of these babies have abnormal brains inside normal-size skulls, and in others the effects may be more subtle but still present.

      And also a recent study on adult mice showed that Zika appears to kill their brain stem cells https://goo.gl/zhz7VB.

      It's not known whether this might have long-term neurological consequences in humans, and what they might be, because the strain of Zika that causes these neurological problems has not been around that long.

      The previously circulating strains do not seem to have caused these problems like microcephaly.

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    12. Re:Law of unintended consequences, also frosty by ShanghaiBill · · Score: 3, Insightful

      accepting defeat means losing the useful original meaning

      The original meaning is already lost. If you actually use "begs the question" correctly, 90% of your audience will have no idea what you mean, and the other 10% will think you are being pompous. It is best to just avoid the phrase entirely in both writing and speaking.

    13. Re: Law of unintended consequences, also frosty by phayes · · Score: 3, Informative

      Aedes aegypti is an invasive species in the Americas and doesn't lays it's eggs in water that typically hosts dragonfly larvae. It's elimination from the americas poses no threat here. Even in it's native range there are other, non pathogen spreading species that are more important to dragonflies than Aedes aegypti.

      --
      Democracy is a sheep and two wolves deciding what to have for lunch. Freedom is a well armed sheep contesting the issue
    14. Re: Law of unintended consequences, also frosty by Dutch+Gun · · Score: 5, Insightful

      What about the ecosystem? As a species we are guilty of repeatedly taking actions without thinking about the effects on the environment. Considered in isolation, anything that damages "the ecosystem" sounds universally bad. In this case, the ecosystem in question is cans, buckets, pots, water storage jars, trash, tires, and whatever else is lying around collecting rainwater. Aedes aegypti does not breed in ponds, marshes, swamps, or wetlands, and thus there are no frogs and no fish to eat these mosquitoes—one of the reasons they have done so well as a species.

      A little reading of the linked articles answers some questions about this. In short, it's not at all clear this would have a significant effect on anything other than our own man-made ecosystem, and that effect would likely be nothing but positive.

      I also find it a tad hypocritical when people pontificate on theoretical consequences while they are nearly completely immune to the consequences of the status quo. It's pretty damned easy to be opposed to actions that could save tens of thousands of lives a year when you personally are at nearly zero risk of dying from a tropical, mosquito-borne disease.

      I'm not saying to rush into eliminating a species without due diligence, but let's not let knee-jerk reactions prevent us from at least investigating the viability of this.

      --
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    15. Re:Law of unintended consequences, also frosty by clovis · · Score: 3, Insightful

      accepting defeat means losing the useful original meaning

      The original meaning is already lost. If you actually use "begs the question" correctly, 90% of your audience will have no idea what you mean, and the other 10% will think you are being pompous. It is best to just avoid the phrase entirely in both writing and speaking.

      This +++
      When one identifies a phrase or word in transition, it's probably best to avoid it. I'm afraid to use "literally" now because I have no idea how it will be interpreted.

    16. Re:Law of unintended consequences, also frosty by silentcoder · · Score: 3, Funny

      They'll just have to suck our DNA out of crab lice trapped in fossilized lube.

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  2. Food supply for bats by nbritton · · Score: 3, Insightful

    I would love not having them around, however be aware that mosquitos are a staple for bats. You have to think about the food chain first before you just go blindly killing all of them.

    1. Re: Food supply for bats by Feral+Nerd · · Score: 3, Interesting

      As much as i like bats as any other person, they are the most popular remaining source of rabies in the developed world.

      Bats also eat thousands and thousands of tons of insects that otherwise would wipe out our crops. They are extremely useful creatures. I think we can put up with the relatively insignificant annoyance of a few of them having rabies, especially in view of the fact that we have had a rabies vaccine since 1885.

    2. Re:Food supply for bats by Anonymous Coward · · Score: 5, Informative

      This article argues otherwise and says the environmental impact would be negligible: http://www.nature.com/news/2010/100721/full/466432a.html

      Other insectivores might not miss them at all: bats feed mostly on moths, and less than 2% of their gut content is mosquitoes. "If you're expending energy," says medical entomologist Janet McAllister of the Centers for Disease Control and Prevention in Fort Collins, Colorado, "are you going to eat the 22-ounce filet-mignon moth or the 6-ounce hamburger mosquito?"

  3. Re: Might want to think about that... by Anonymous Coward · · Score: 5, Funny

    #mosquitolivesmatter

  4. Yep by markdavis · · Score: 4, Insightful

    >"If scientists could send Zika-carrying mosquitoes into extinction, should they do it?"

    Yes. In fact, any human biting mosquitoes, not just Zika ones. I personally would prefer the "eradicate to NEAR extinction" option and not complete eradication, however... just to be on the super-safe side. And, of course, we would retain frozen/live samples indefinitely. Perhaps eventually we could find a way to change them such that the females do NOT require blood to procreate.

    The studies I have read seem to indicate that human-biting mosquitoes do not represent a critical or even major link in the food chain for other creatures. They are also very minor pollinators. Many believe their loss will not collapse or even stress any ecosystem.

    I have no problems with the same treatment for fleas, ticks, chiggers, and bedbugs, either.... insects that cause nothing but misery and add little to nothing to the food chain.

  5. If we're going after bloodsuckers... by Anonymous Coward · · Score: 5, Funny

    start with lawyers and leave the poor mosquitoes alone.

  6. Even more reason to off mosquitos then by SuperKendall · · Score: 5, Interesting

    Bats also eat thousands and thousands of tons of insects that otherwise would wipe out our crops.

    So then bats without any mosquitos to catch would simply catch more of the crop-destroying insects, right?

    Bats are still around.

    More crop pests are eaten.

    Mosquitos are gone.

    Sounds like a win/win/win.

    --
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  7. Re: Might want to think about that... by pollarda · · Score: 3, Insightful
    There was a recent study that found that mosquitos didn't serve as an important food source for other species as expected. I don't remember if it was one species of mosquito or all. (Though I have a hard time thinking how various critters could tell the difference while eating them.)

    In many parts of the country or world spraying is used to control mosquitos. Spraying not only kills the fast majority of mosquitos in an area but likely kills other bugs in the area as well. If wiping out the mosquitos eliminated an important food source for other species, we would be seeing a significant decline of other species in areas of heavy spraying. While I'm not arguing for eliminating mosquitos without seriously looking at it, spraying will continue as will the environmental consequences of spraying until it happens.

    Additionally, our politicians always are saying "if the life of one child can be saved...." give up your freedoms. People seem to be pretty ready to live under onerous government rule to save that one (or twelve) lives per year saved. Well, here we have a situation where we can measure what the worth of a human life truly is worth.

  8. Re:Might want to think about that... by Carewolf · · Score: 5, Interesting

    As annoying as mosquitos are, they also serve as a food source for other species. Might be a good idea to figure out where that thread leads before you pull it...

    It has been investigated. Turns out they are not important for any other species, everything that eats mosquitos mainly eat other things.

  9. capitalism? by matushorvath · · Score: 3, Insightful

    What TF has this got to do with capitalism? If it happens, it will be a huge regulatory intervention, done by governments and inter-governmental organizations. It will not be done for profit. That's like the exact opposite of capitalism.

  10. China's Four Pests Campaign by WD · · Score: 3, Informative

    Eliminating pests sure worked well for the Chinese, didn't it? http://io9.gizmodo.com/5927112...

    Here is a picture of somebody in China hand-pollinating a pear tree due to one of the unintended side effects (no bees): https://2.bp.blogspot.com/-9wT...

  11. Still waiting.... by CODiNE · · Score: 4, Interesting

    Whatever happened to those laser mosquito zappers? They were coming real soon at least as far back as 2009. The inventors claimed it was easy to do with off the shelf components and aimed at $100 mass produced devices. There were all those cool slow motion videos of mosquitos shot down in flight. Nothing ever came of it... I'd happily pay $200 or more for a working system. There's a real need for such products, maybe a DIY version could be invented and people could build their own open source control systems for them. Malaria was bad enough, now with Zika all over the news I can't understand why these guys aren't swimming in cash.

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  12. Re:Might want to think about that... by Joce640k · · Score: 4, Insightful

    Gee, if only the biologists were as clever as Slashdot posters.

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  13. Re:Meh by ultranova · · Score: 5, Insightful

    I don't think we should be playing God and deciding who and what species deserve to be around.

    Deciding people should die for the sake of preserving mosquitoes is also playing God. Once the possibility exists, you can't avoid deciding.

    It is quite probable that nature itself is trying to curb our own population growth in some manner.

    The closest this planet has to a nervous system is our society. Nature isn't trying to limit us any more than your body is trying to limit you. Some choices might have less than optimal outcomes, but that's no different from you getting a hangover: it's not that your body is trying to stop you from drinking, it's that it's not working well do to your actions.

    If you wish to mystify this, then karma is a better framework than vengeful nature deity.

    --

    Forget magic. Any technology distinguishable from divine power is insufficiently advanced.

  14. Re:Kill Them All, For God Shall Know His Own by Joce640k · · Score: 3, Funny

    Unfortunately, mosquitoes have no souls.

    That doesn't mean that hell isn't full of them.

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  15. Re:Might want to think about that... by halivar · · Score: 3

    I think both you and the GP need a healthy dose of [citation needed].

  16. Re:Meh by Gavagai80 · · Score: 3, Insightful

    People have driven so many species extinct that we're a major global extinction event. Suddenly when we decide to do it intentionally just once to the most disastrous killers who server no purpose in their ecosystem and are easily replaced by non-harmful species, that's when it becomes wrong?

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  17. Oops, I killed it again... by TiggertheMad · · Score: 3, Interesting

    Perhaps we should catch and cultivate in captivity a genetically viable population of the species we intend to eradicate, before we wipe them out. Then if we eliminate them from the wild and that proves to be a bad move, we at least have the option of reversing course.

    While it would seem to be nice to not have these insects making parts of the earth effectively uninhabitable, lets be a little cautious before removing something that has been part of the Earths ecology for the past billion years or so.

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  18. We are part of natural selection by TiggertheMad · · Score: 5, Interesting

    Mosquitoes are killing us. It would be stupid not to fight back. That's how natural selection works.

    I love how people talk about natural selection as if we weren't part of it. If mosquitoes are a pest to the apex predator of the planet and it decides to eliminate them, it has lost at natural selection because it was unfit to survive in an environment where we live. Other insects that don't spread disease to the apex predator are more fit. Just because we reason and can launch space ships into orbit doesn't mean that we are somehow outside of the forces that natural selection acts with. We are one of its tools for determining survival regardless of what we think.

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    1. Re:We are part of natural selection by Xest · · Score: 3, Insightful

      You're showing a fundamental misunderstanding of the situation, it's not about whether we are or aren't affected by or do or don't affect natural selection, it's that ecosystems are complex systems, ones that we simply cannot accurately predict the result of changes on.

      The issue is that we don't know what the effect of wiping out that species is, it may mean that they or species dependent on them as a food source also die out and that chain continues until some fundmentally important species to the ecosystem die out and the local ecosystem collapses.

      It's precisely the problem that we are part of the ecosystem and that we simply do not know what the consequences of wiping a species out are. It's perfectly possible that more people will die from ecosystem collapse resulting from mosquito elimination than die from mosquito born diseases currently. Even wiping out mosquito born diseases can be problematic in that it can make way for new diseases that are more deadly to take their place.

      No one with any scientific authority believes for one second that we're outside the forces of nature, on the contrary, they know we're bound by the forces of nature such that meddling with them can be dangerous for us, as well as our target of eradication. Saying we can kill what we want because we're the fittest is astoundingly naive as it assumes that nature can always support us no matter how much of it we destroy, but there reaches a tipping point where that's simply not true, and if we're destroying it to try and save lives there's every possibility we're actually doing the opposite and losing lives as a result.

      This isn't just theory, there are many cases where it's born through into reality. People used to kill beavers in England for food to the point they were wiped out here, a classic case of survival of the fittest such that humans were avoiding starvation by eating beavers and used their pelts for clothing, except, because beavers were no longer building upland dams, heavy rains were no longer held back, and villages were wiped out and people killed by resultant floods. The result being that the human population also decreased in turn. This effect is still being felt to this very day where land clearance has created far greater harm from floods where people still die in England.

      The issue is that we can't wipe out a species as an isolated event whereby there are no negative consequences for us.

      The thing that actually makes us different is precisely the fact that we can reason about these things, many past extinctions such as certain mammoth populations were down to the fact that they over-grazed during extended dry periods and starved, were they able to reason about things like stock piling they may be around to this day, but for them sending the species of plants on which they grazed extinct was their own undoing. We're fortunate that we're able to reason against that same fate. Well, the intelligent amongst us are at least - I just hope we don't get outvoted by the sort of naive ignorance on such issues that suggest we can just wipe out species at will with no consequences based on a half arsed belief that we're part of nature so we can wipe out species under the guise of natural selection coupled with the hypocritical belief that we magically stop being part of nature when it comes back to bite us. It doesn't work like that, once you recognise the reality of biology and fitness you have to understand that it's a two way street - nature can destroy us, just as we can destroy it.

  19. Re:Might want to think about that... by RoccamOccam · · Score: 4, Funny

    The effect would be no worse than if pizza stopped existing.

    Please think about what you are saying!

  20. Before we go too far down that line of thought by Solandri · · Score: 3, Insightful

    out of the 3,500 species of mosquitos out there, only about 200 bite man

    Why? And in a related note, apparently only two mosquito species transmit Zika. Why?

    I'm asking because that Nature link only seems to be considering consequences of the loss of the species as a food source. What about some of the other possible consequences? Could these human-biting mosquitoes be filling an ecological niche, and without them could biting flies (which hurt like hell) end up filling the now-empty niche and exploding in population? Could Zika mutate into a different form which allows it to be transmitted by other mosquitoes, or even flies?

    You can't just consider whether the rest of the ecosystem could survive the loss of mosquitoes. You have to look at how it would react to the loss.

  21. Re:Might want to think about that... by phayes · · Score: 4, Insightful

    The Gene drive under discussion is Aedes aegypti specific, Aedes aegypti isn't the only mosquito species present even in it's home range and due to it's habit of laying eggs in tiny pools of water is never an important prey species. What basis do you have for saying that the elimination of a specific pathogen spreading species in the Americas where it is an invasive species is a problem?

    --
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  22. I think we should kill them all by Metaphorical+Duck · · Score: 3, Insightful

    The primary argument for killing them seems to be that it would help protect humans. The primary argument against seems to be that there might be environmental consequences.
    Consider if the situation were reversed. Imagine that mosquitoes were currently not killing any humans, but were in danger of going extinct, and there might be environmental consequences to that.
    But wait! Fortunately, we have the ability to save the mosquitoes. All it would take is for some 500,000 people to be sacrificed each year! Now I know this may seem a bit unethical, but most of these people are in very poor countries, so the don't really count, right?
    When you put it like that, the two sides don't seem so evenly balanced. It becomes pretty clear that our moral obligation is to exterminate the mosquitoes that spread disease to humans as soon as we can, using all the tools at our disposal.

    Some people also bring up the possibility that wiping out mosquitoes will give an opportunity for something worse to appear. I don't think this is a good counter argument.
    First, it is never used for any other species that poses a similar health risk. No one would ring their hands over the possibility that wiping out HIV would cause something worse to replace it.
    Second, there really isn't a mechanism by which wiping out mosquitoes could present an opportunity for another species. Mosquitoes don't compete with other blood-drinking insects the way foxes and coyotes compete with each-other over rabbits.
    Foxes and coyotes both have a certain rate at which they consume rabbits. The rate at which foxes consume rabbits plus the rate at which coyotes consume rabbits must be less than the replenishment rate of the rabbits, or over hunting occurs. As a result, a reduction in the number of coyotes means there can be more foxes.
    But mosquitoes and other bloodsuckers don't compete like this. The total amount of harvest-able blood is not much reduced by mosquito activities. 500,000 people/year out of around 7,000,000,000 people = around 0.007% of the world population per year. True, this rate is much higher in high-mosquito regions, but even with very generous assumptions, it's unlikely to rise above 5%.
    The upshot of all this is that wiping out mosquitoes won't suddenly cause a huge increase the amount of food available for any other species whose food source is similar to the mosquito's. As a result, any species that would be enabled by killing the mosquitoes should already have appeared, because the environment is just as favorable for them now as it would be if we were to kill the mosquitoes.

  23. That's not how evolution works by skam240 · · Score: 3, Insightful

    So biting flies or some other species would bite people more because the mosquitos that bite people were killed off? How does that make sense from an evolutionary standpoint? The presence or non presence of mosquitos that bite people should not make a difference as to whether some other species evolves to attack humans or not. Just because a mosquito bites a person doesnt mean another species cant.

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  24. Re:Meh by swillden · · Score: 4, Insightful

    There is a difference between murder and manslaughter.

    I'm not trying to make some emotional argument with that, just pointing out why people may perceive the extinction of species differently in this case.

    We intentionally eradicated smallpox.

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