Slashdot Mirror


Nuclear Mutant Flies Are Good For Africa?

D\monix writes "According to this article in Reuters, the International Atomic Energy Agency is going to start releasing massive numbers of tsetse flies "sterilized by a burst of radiation" into sub Saharan Africa in order to outnumber and thus eradicate the local fly population. My favorite quote? "The impact of the fly is difficult to exaggerate." You're damn right it is. Anyone else out there think pumping large numbers of mutant insects into the environment might be a bad idea?"

17 of 647 comments (clear)

  1. Dont get your ilinformed knickers in a knot. by myosin · · Score: 5, Informative

    Of course these arent /mutant/ flys. theve just been sterilised. No more radioactive than usual, and cetainly not going to pass in theyre sterility to the next generation :).

    I for one do NOT A think pumping large numbers of mutant insects into the environment might be a bad idea.

    --

    -----
    "Almost isn't good enough - but it's almost good enough."
    -Me
    1. Re:Dont get your ilinformed knickers in a knot. by HerringFlavoredFowl · · Score: 5, Informative

      Ummm ... hate to break this to you but they have been doing this kind of stuff since I was a kid. It is one of the standard method used to control fruit flies in florida ...

      The new twist here is that they are doing it on a new type of insect that apears to have a fairly long life.

      TastesLikeHerringFlavoredChicken

      --
      TastesLikeHerringFlavoredChicken
  2. Mutant flies, oh no! by NullAndVoid · · Score: 4, Informative

    Anyone else out there think pumping large numbers of mutant insects into the environment might be a bad idea?

    Comic books and technophobic hysteria notwithstanding, exposing something to radiation doesn't make it a mutant. If it reproduces and produces weird offspring, that's mutation. If the radiation sterilizes the flies, there's not much to worry about.

    --


    -- Sigs are for losers
  3. Not genetic variants by pubjames · · Score: 5, Informative

    The original poster does not understand the issue.

    These are flys that have been sterilized by radiation. They are not genetic mutants. If they will live their little lifetime, and then die. Their genes will not be passed on to another generation.

    "Mutants" are offspring which have different characteristics to their parents because genetic mutation has occurred.

    I am against releasing genetically modified organisms into the environment. But this is not what they are talking about. These are sterilized files. Not mutants. There is no danger here.
    If it reduces the number of disease carrying files, then this is a very good thing.

    1. Re:Not genetic variants by pubjames · · Score: 3, Informative

      And what does radiation do again? NOT mutate things?

      If you want an extra head, ( ;-) for instance), then all the mutation has to occur in the original sex cell before cell division occurs. Mutation in adult cells either doesn't do anything, kills the cell, or on rare occasions causes it to multiply in an abnormal manner i.e. cancer.

      You would not get

      a) an extra head or
      b) the mutation passed on to offspring.

    2. Re:Not genetic variants by Gaijin42 · · Score: 3, Informative

      His point was if you radiate yourself, you wont grow a second head. However your kids might have a second head.

      Since these flies are sterile, they wont have kids that can have second heads. Therefore any mutations which the radiation caused in the fly will die out with that fly.

      If there is too much DNA damage on a given fly, it will just die, and they will make some more.

  4. Just wanted to correct something... by Anonymous Coward · · Score: 3, Informative

    The article referenced does NOT say "The impact ON the fly is difficult to exaggerate." it actually says, ""The impact OF the fly is difficult to exaggerate." Not a quick commentary on how bad the radiation is for the fly, but on how bad the fly is for Africa.

    ...just saying. :)

    1. Re:Just wanted to correct something... by Alien54 · · Score: 5, Informative
      Not a quick commentary on how bad the radiation is for the fly, but on how bad the fly is for Africa.

      [Sarcasm=1]

      let's see - the Tsetse Fly is responsible for disease in millions of people, causing untold suffering. If we spread millions of Sterile (unable to reproduce = no offspring) flies, this means that the population will not suffer the disease rate, and so the native african population will not suffer the diseases and increased death rates associated with it. As a result the population will boom, and many more people will die for other reason, such as Aids.

      So I guess you are right, we should not sterilize the flies and release them into the wild, crashing the fly population, and attempting fly genocide, because the sterile (unable to reproduce flies = no offspring) might cross breed producing dangerous young, spreading their infertility to lots of other species.

      [Sarcasm=0]

      you get the idea

      --
      "It is a greater offense to steal men's labor, than their clothes"
  5. Bad for wildlife by TDoris · · Score: 3, Informative

    The tsetse fly is a very important element in the preservation of wildlife in Africa - wherever there are large concentrations of the tsetse, farmers will not bring in their herds of cattle. If the tsetse was eliminated a major impediment to African farmers overrunning the natural habitat of indigenous African wildlife would be removed, and biodiversity of the region put at further risk. Anyone willing to accept for five seconds that the environment is not a simple system???

  6. More resources.. - TAKE TWO by Andorion · · Score: 5, Informative

    Here's another paper in PDF format.

    Here's a very interesting excerpt, for all those who can't figure out why this might actually work:

    Tsetse life-cycle. The tsetse is a unique insect. It gives birth every 9-10 days to a full-grown larva, which immediately burrows into the soil andforms a pupa. Thus the egg and larval stages of tsetse are notsubject to the usual hazards and losses experienced by otherinsects.Female tsetse produce at most nine larvae. Tsetse fliesunquestionably have the lowest reproduction potential of anyinsect, and this fact makes them a good target for SIT. A single mating provides sufficient sperm for fertilizationthrough the female's 90-100-day lifespan. Since females usuallymate only once, if they are mated by a sterile male they will notproduce any offspring.

  7. it worked in Winnipeg by Herr_Nightingale · · Score: 5, Informative

    When i lived in Winnipeg, Manitoba (somewhere in Canada, for all you Americans) they did the same thing to mosquitoes. Sterilize millions (males, mostly), send 'em out to mate (they mate only once) and then watch the population plummet. It's a trillion times safer than DDT and the other killer poisons they like to fill the air with during skeeter season.

    1. Re:it worked in Winnipeg by Ian+Bicking · · Score: 3, Informative
      AFAIK, there hasn't been any evidence that DDT is harmful to humans, or most animals, except in concentration (as happens in the food chain).

      The problem was with farmers who used lots of DDT over a long period. Targeted use of DDT isn't necessarily harmful -- though it is currently banned. I think I heard that the amount of DDT used in New Guinea to try to eliminate malaria (I think it was successful there) was about the same as the amount of DDT used on a single farm at the time. The people trying to eliminate malaria had a lot better reason than the farmers, and were acting much more responsibly.

      Of course, for malaria they were only trying to eliminate a certain vector -- a mosquito biting one person who had malaria, and then biting a second person. They weren't trying to eliminate an entire species. After a few years of treatment, there weren't people with malaria and there wasn't a risk from mosquito bites.Before DDT, efforts to control malaria did involve eliminating entire species of mosquito.

  8. Re:The principle concept eludes me by Baki · · Score: 5, Informative

    The non-sterilized (genetically engineered is something entirely different) flies chance to find each other to mate amongst massive number of sterilized flies is drastically reduced. Thus also the amount of offspring.

    Moreover, if only 2 flies were left on, say, 100 square kilometer, what do you think the chance is that they meet?

  9. do get angry by twitter · · Score: 5, Informative
    I used to work for Dr. Edward Lambremont, who did some pioneering work in this area, back in the 60's. The idea is to elliminate a vector of human disease, sleeping sickness in this case. The idea worked. Sterile flies, captured or raised fat and happy in captivity, overwhelm the breeding population and can eliminate the wild population. Tests were done on various islands and both the vector and the disease were erradicated. The island's echo systems were not destroyed as other non disease carrying insects took the place of the erradicated flies. Anyone really interested can look up the work and go visit the test sites.

    Those opposed might do the same, before their ill founded fears keep the world from using a 40 year old, tested and verified idea to spare some 400,000 lives and untold livestock a year. Yes, ludites piss me off.

    --

    Friends don't help friends install M$ junk.

  10. Screwworms were wiped out in the USA in 1966 by alanw · · Score: 3, Informative

    Using precisely this method. See
    This U.S. Department of Agriculture web page

  11. No, they compete for FEMALES by texchanchan · · Score: 3, Informative

    "The sterile flies with compete with the non-sterile flies for resources. So some sterile flies will die. This will leave a lot more than 2 sterile flies left."

    That's not how it works. It works like this: The sterile flies compete for MATES, not resources. These boys are sterile, but still have all their natural instincts. Lots of mating takes place, but no fertilization. Satisfied but deceived she-flies lay eggs that will never hatch.

    And, the way to tell if it'll never work, is to look at where it's been tried. This technique has worked very well over the last 40 or 50 years in screwworm eradication.

  12. As someone who once lived there ... by Christianfreak · · Score: 5, Informative

    I know this post is going to be buried but I'll say it anyway:

    As someone who lived in Africa I can tell you first hand how nasty those flies are. Their huge and they hurt when they bite you. Fortunatly I was vaccinated against some of the nasty diseases they carry such as Yellow Fever and African Sleeping Sickness. Unfortunatly most of the population of Africa is too poor to even know what a vaccine is much less afford one. So any idea to get rid of the flies is a good one.

    I'm ashamed by the /. FUD on this one. These flies aren't 'nuclear' or 'radioactive'. They've been steralized (by radiation) the idea being that there will be so many sterile flies that populations of flies will decrease as ones 'in the wild' mate with the sterile ones and don't produce offspring.