Associative learning turns DEET from aversive to appetitive in Aedes aegypti

(journals.biologists.com)

58 points | by croes 3 days ago ago

22 comments

  • gobdovan 9 hours ago

    In plain English, they made mosquitos like repellent.

    • Y-bar 8 hours ago

      Tldr: Repelln’t.

  • zeafoamrun 8 hours ago

    Could this already be happening out in the wild?

    • cactusplant7374 3 hours ago

      I use a lot of bug spray and I am still swarmed sometimes.

      • fooqux 31 minutes ago

        As I understand it, DEET just prevents biting as they don't like the taste of it, and they taste with their feet. Thus, it doesn't do much to prevent initial attraction.

        • exabrial a few seconds ago

          I believe DEET interferes with their ability to locate prey actually.

  • OutOfHere 7 hours ago

    I hope these mosquitoes were not released in the wild.

    The simple answer would be to add a natural strongly repellent gentle oil to the DEET spray.

    • Foobar8568 6 hours ago

      A couple years back, I spray some DEET on my shoes, 5 seconds later, a tiger mosquito tried to bite me on that spot (and yes on the shoe itself, just insane to see it trying ).

      They already loved that shit.

    • alwa 2 hours ago

      And remove the DEET from it, apparently… at least until it loses its appetitive charge.

      Until, of course, they learn to like the replacement oil. At which point, break back out the DEET!

    • plmpsu 4 hours ago

      Yeah, I would not be surprised if this learned behavior is passed on epigenetically. This is almost like gain of function research potentially.

    • AyyEye 7 hours ago

      At that point just skip the deet.

    • cbdevidal 6 hours ago

      Spray made from lemon eucalyptus works[1]. Not as well as DEET, but it works.

      [1] https://www.consumerreports.org/health/insect-repellent/oil-...

      • cbdevidal 2 hours ago

        I don’t understand why sharing an objective study with good news would be downvoted, someone please explain?

        I’m not saying you have to use it; it’s good news for people who have concerns about other chemicals. It works—less effectively, but it works.

        “Repellants containing (..) oil of lemon eucalyptus have also been found to be effective.”[1]

        [1] Iowa Department of Health, “Controlling Spread of West Nile Virus“ https://hhs.iowa.gov/health-prevention/providers-professiona...

        • OutOfHere an hour ago

          I have seen the same behavior on this site. Insightful information gets downvoted to -2, and useless comments that merely "feel good" get upvoted to +8.

          I think the theory is that each post identifies with a certain topic, e.g. DEET, which identifies with a cultish subset of users surrounding that topic. There is no broad academic curiosity among the cult's members, and they suppress all competing topics as to them they represent other cults.

  • trhway 8 hours ago

    that explains. I was always wondering why in Siberia (where i worked for 2 summers back then at university times) coming out from house with freshly applied DEET you're getting covered with mosquitos - i was attributing that to the especial ferociousness of the mosquitos there - yet it sounds like the smell of DEET for them in those towns may have become like a BBQ smell for us :)

    • HPsquared 7 hours ago

      A bit like how capsaicin was evolved to prevent things being eaten by mammals, but... Well.. humans came along and developed a taste for it.

      "Evolution! Can you give me capsaicin, to deter mammals? I want birds to spread my seeds!"

      https://youtu.be/1fW2uTRdUJU

      • tardedmeme 4 hours ago

        They got the ultimate seed-spreading, since we farm them.

    • MiracleRabbit 8 hours ago

      Freshly marinated in DEET

    • adynaton 3 hours ago

      Damn, were you working at Tselinoyarsk?

    • raverbashing 5 hours ago

      So maybe the solution is to apply DEET to a bug zapper

      • neves an hour ago

        It was fun, but not a bad idea. Are there mosquito mousetraps, or mosquitotraps?

        • hattmall 23 minutes ago

          Yes, they are mostly attracted to CO2 I think. So some traps that burn propane to attract them. Others I've seen are basically a screen over a fan with a block of dry ice. They use those to collect for like an hour then weigh the mosquitos and test for diseases in a swamp.