Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×
Earth Science

Popular Pesticides Keep Bumblebees From Laying Eggs (npr.org) 137

An anonymous reader quotes a report from NPR: Wild bees, such as bumblebees, don't get as much love as honeybees, but they should. They play just as crucial a role in pollinating many fruits, vegetables and wildflowers, and compared to managed colonies of honeybees, they're in much greater jeopardy. A group of scientists in the United Kingdom decided to look at how bumblebee queens are affected by some widely used and highly controversial pesticides known as neonicotinoids. What they found isn't pretty. Neonics, as they're often called, are applied as a coating on the seeds of some of the most widely grown crops in the country, including corn, soybeans and canola. These pesticides are "systemic" -- they move throughout the growing plants. Traces of them end up in pollen, which bees consume. Neonicotinoid residues also have been found in the pollen of wildflowers growing near fields and in nearby streams. The scientists, based at Royal Holloway University of London, set up a laboratory experiment with bumblebee queens. They fed those queens a syrup containing traces of a neonicotinoid pesticide called thiamethoxam, and the amount of the pesticide, they say, was similar to what bees living near fields of neonic-treated canola might be exposed to. Bumblebee queens exposed to the pesticide were 26 percent less likely to lay eggs, compared to queens that weren't exposed to the pesticide. The team published their findings in the journal Nature Ecology and Evolution.
This discussion has been archived. No new comments can be posted.

Popular Pesticides Keep Bumblebees From Laying Eggs

Comments Filter:
  • by Anonymous Coward on Monday August 14, 2017 @11:37PM (#55014441)

    No bees means no pollination. Farmers recognizing this will voluntarily reduce their use of these pesticides once they consider what manual pollination would entail.

    • by youngone ( 975102 ) on Monday August 14, 2017 @11:50PM (#55014495)
      Farmers don't operate in a market.
      Corn, Soy and canola are all heavily subsidised in both Europe and the US.
      Interestingly the Shorthaired Bumblebee was extinct in the UK, but because it had been introduced to New Zealand in the 1880's a new population could be started.
      That might not be that interesting actually.
      • by epine ( 68316 )

        Farmers don't operate in a market.

        More of a market than Wall St, so long as they continue to accept giant bail-outs.

        It is a truth liberally side-stepped, that any enterprising man in possession of a fast fortune—who now finds himself the kingpin of a mature industry—must be in want of escaping natural market forces.

    • by jvin248 ( 1147821 ) on Tuesday August 15, 2017 @12:11AM (#55014571)
      The largest crop in the US is not Corn or Soybeans, it's lawn grass. Many of the lawn and garden chemicals homeowners like to use, or are used on plants homeowners pick up at the local big box retailer, contain these chemicals harmful to pollinators.
      The statistic is somewhere around 70% of the foods in the typical American Diet need pollinators. No pollinators then pretty limited menus.
      • Re: (Score:2, Interesting)

        by markdavis ( 642305 )

        But the plants most homeowners use pesticides on are not the flowering kinds that most bees go for. Lawn grass is rarely, if ever, allowed to flower because it is mowed (save maybe some low-growing clover... which is not grass anyway).

        I know in my yard, the ONLY thing I use neonicotinoids on are my non-flowering ornamental bushes (which are trimmed enough to keep from flowering). Without it, unfortunately most would all be dead due to scale. Yes, I tried everything else and nothing worked until I applied

        • Re: (Score:3, Insightful)

          by Arzaboa ( 2804779 )

          My thought is that no plant in the right environment should need any *cide's. Even if every neighbor only doses one bush, it does have a cumulative effect large enough to matter. Most would use the same argument, a smart guy like me should be able to use it so... Think about the people you hear say that and roll your eyes at. Just because bees aren't in there, others are, and just because they aren't bees, doesn't mean they aren't having the same effects on them. This stuff is just bad. So while you

          • With that said, I get the shortcuts. It is hard to do. We are not setup for it in this country for many reasons. Everyone wants a nice looking piece of grass, but no one has the time.

            Its kind of amusing. I live in a village where the two best lawns are our neighbor across the street and ours. Theirs is definitely the winner. And neither of us use any of that poisonous crap on our lawns.The biggest thing for lawns in our area is lime to make the soil alkaline enough, and corn gluten in the spring. Every so often spread a little finely shredded compost - just beware that it needs to be tested for pesticides depending on where it came from. I have a fireplace and get wood ashes to spread a

          • I landscaped our front yard from a lawn with rose bushes, to a stone path with succulents and rose bushes. The yard needs about 1/4 or less as much water now, and no pesticides nor herbicides. A little bit of miracle grow (nitrogen mostly) used in water pots for quicker rooting for succulent cuts.

        • Show the evidence (Score:5, Interesting)

          by sjbe ( 173966 ) on Tuesday August 15, 2017 @07:11AM (#55015817)

          I know in my yard, the ONLY thing I use neonicotinoids on are my non-flowering ornamental bushes (which are trimmed enough to keep from flowering). Without it, unfortunately most would all be dead due to scale. Yes, I tried everything else and nothing worked until I applied Merit and that stuff is magic. Applied only once a year and the problem is gone.

          Maybe the fact that they cannot survive without putting toxic chemicals on them is a hint you should take. How about planting something that doesn't require special toxins to survive. Native plants are usually a good start.

          I don't think the casual use by homeowners seeking protection of some established ornamentals is much (if any) exposure to bees.

          Based on what evidence? You "don't think" it is a problem why exactly? And we're not talking about one or two homeowners. We're talking about millions of them all across the country using quite a lot of the stuff. Furthermore the chemicals don't just stay were you spray them and they don't magically disappear.

          I would not be in favor of any type of across-the-board ban of neonicotinoids if it would mean taking it out of the hands of responsible use in ways that can't possibly be much danger.

          Given that there appears to be substantial evidence of important negative effects on critical pollinators, exactly what is the basis of your argument? Because you think your are being "responsible" with them? Particularly in regards to plants that are purely ornamental. There is such a thing a responsible use in the food supply but no such thing exists for ornamental plants including lawn grass. If your lawn requires even occasional spraying then you are Doing It Wrong.

          • You'd think so about the native plants, but it is interesting that when my vegetable garden gets powdery mildew (Which then requires me to treat my pumpkins) the domesticated crops are resistant, but the native weeds also get the mildew and suffer and die. Similar with insect pests, only a few susceptible domesticated species but all the local weeds are on the menu. When you walk through the woods there is a mix of native wildlife with plants that are living and others that are dying. This works well for
            • by Anonymous Coward

              "Native weeds"? Which species, exactly? And what region are we discussing?

        • by dryeo ( 100693 ) on Tuesday August 15, 2017 @11:07AM (#55017177)

          One of the problems with residential use is all the idiots who can't follow directions. Label says 50:1 mixture, they say that 10:1 must be better. Don't know much about neonicotinoids but do know that with most systematic herbicides, it's actually self defeating as it kills the tops before it transfers to the roots.
          Took a pesticide applicators course a long time ago and it was consistently stressed that pesticides are a last resort.

      • The statistic is somewhere around 70% of the foods in the typical American Diet need pollinators. No pollinators then pretty limited menus.

        Out of work coal miners will be given Q-Tips and sent into the fields to pollinate, just like Jesus would have done.

      • If only we could make a pesticide that wasn't harmful to bees, but fatal to hornets. Those assholes.

    • by Anonymous Coward

      Yes but those bees are neo-nazis, now what????

    • AFAIK these kinds of pesticides are used the most by organic farmers because they are pretty much the only "natural" ones that work, with the others being synthetic pesticides. May not be a coincidence that the organic industry's rise has coincided with the decline in bee populations.

      • Re: (Score:3, Interesting)

        by sjames ( 1099 )

        You REALLY need to re-do your research. Neonics are synthetic and NOT used by organic farmers. You might be thinking of nicotine.

        • Yep, I misread TFS. It's rotenone and azadirachtin (neem) that do, and somehow I thought I saw the later in TFS rather than just neonics. Nonetheless, these are highly toxic to bees and organics can't go without them. Because they're "natural" they're legal everywhere.

      • Re: (Score:3, Informative)

        by Ol Olsoc ( 1175323 )

        AFAIK these kinds of pesticides are used the most by organic farmers because they are pretty much the only "natural" ones that work, with the others being synthetic pesticides. May not be a coincidence that the organic industry's rise has coincided with the decline in bee populations.

        Neonicitinoids. Just as natural as arsenic and Death Angel Mushrooms? Natural doesn't equal safe, and even then, these compounds, which are similar to nicotine - hence the name - are quite synthetic.

        They were introduced mainly because they are less toxic to mammals and birds than organophosphates. It was also thought that they would break down fairly quickly. As it turns out, they don't, and they are proving to be very toxic to some beneficial insects.

        • Commenting here to undo a wrong moderation. Your post wasn't funny. It was informative to me. Come on, Slashdot, please fix this 10 year old bug [sourceforge.net]!
          • Commenting here to undo a wrong moderation. Your post wasn't funny. It was informative to me. Come on, Slashdot, please fix this 10 year old bug [sourceforge.net]!

            No problem Curupira. At least it isn't deniers claiming I'm a troll! 8^)

            And if you want to see something interesting, its when you see how many bees and bumblebees there are when you don't use that stuff. Especially with the bumbles, since they don't have as far a range and stick nearby with non-toxic plants and flowers.. We have a slew of them in our local yards.

    • by ShanghaiBill ( 739463 ) on Tuesday August 15, 2017 @12:34AM (#55014637)

      No bees means no pollination.

      Wrong. Many crops don't require bees for pollination. For instance, corn pollen is carried in the wind. Other crops, such as alfalfa are pollinated by bees, but don't need pollination to produce the crop (the leaves and stems) and may produce more foliage without pollination. So why should these farmers give a crap about a beekeeper a mile away that they don't even know? Hint: They don't.

      It is already ILLEGAL to spray these pesticides without notifying the beekeepers, but enforcement is lax, and when a beekeeper finds a million dead bees in her hives, it is almost impossible to find out which farmer was responsible.

      These pesticides should be banned except for some very narrow uses.

      Disclaimer: My mom is a beekeeper. I help her with her hives, so I know a bit about these issues.

      • by Talderas ( 1212466 ) on Tuesday August 15, 2017 @08:35AM (#55016065)

        The investigation of pesticides is more driven at colony collapse which is the sudden disappearance of the workers leaving the queen and a few nurses the reasoning for it are still misunderstood. This research at least provides some path to explain why the bees disappeared. If the queen is producing fewer eggs, the workers may be able to sense that is occurring and leave the hive either going feral, dying, or attempting to merge with another colony with a healthy queen because it is very rare that the bees in a hive will leave while there's still brood in cells.

        When the colony dies, a bunch of dead bees in the hive, it's far easier to autopsy the hive and determine a cause. You could find the presence of varroa mites, indicators that the bees are suffering from dysentery or nosema, American/European foulbrood, starvation, or a loss of a queen which could not be replaced. There's numerous other reasons as well but unless you perform the autopsy on what you find you can't determine the cause. Blindly blaming pesticides for a bunch of dead bees is pointless when you have the option to find the cause of the colony death.

        • Do you have a citation for worker bees leaving one colony to try to join another? That goes against my admittedly sub-hobby level of knowledge about bees, but I can't imagine why sterile workers that normally attack non-related bees would behave in such a manner and why they wouldn't be instantly killed by the 'new' hive.
          • I will admit that it's difficult to search for info on wild bee hives. A majority of search results will go to beekeeping links. That said, beekeepers can and do merge hives together but doing so requires one hive to be queenless and this is obviously different from bees voluntarily leaving one hive and finding another in the wild. Colonies will also respond differently when a frame of brood cells is introduced to the hive. If the hive has a queen they will not accept the brood but they will accept it if th

            • I consider it more likely that bees that abandon a queen do so because there's a virgin queen in the mix and there's something inherently wrong with the old queen or reproductive workers in bees that flee lay eggs which are used to raise a new queen in a new hive.

              If that were true then bee keepers would have known about it, and reacted accordingly. Since the drastic damage to bee hives is new, you would assume that there is something occurring within the environment (whether is pesticides, herbicides, pollution, disease, or combination of them) that is causing it.

              The impact of domesticated bees on farming can be quite large,.I would hesitate to go with a simple answer without significant supporting evidence.

        • You could find the presence of varroa mites, indicators that the bees are suffering from dysentery or nosema, ...

          I don't think these are separate issues from the neonicotinoids. Exposure to pesticide weakens the bees, and that can make them more vulnerable to these other afflictions.

          Neonicotinoids and Varroa Mites [buzzaboutbees.net]

    • Re: (Score:3, Insightful)

      by Opportunist ( 166417 )

      Yeah, that works out so well with pollution in general, see how people avoid wasting gas, voluntarily install filters and forgo using air condition to make a smaller eco footprint because else we can't breathe anymore? No regulation required.

    • Re: (Score:2, Insightful)

      by Anonymous Coward

      Hahaha - nice one.

      Here's another...

      Nuclear wars means no people. Countries recognizing this will voluntarily reduce their use of these nukes once they consider what nuclear fallout would entail.

    • by Whibla ( 210729 )

      No bees means no pollination.

      Pollination is carried out by insects, not just bees. Bees are just the public friendly face of pollination, probably because they also provide honey, while all flies do is, in popular perception, eat shit and carry diseases.

      Farmers recognizing this will voluntarily reduce their use of these pesticides once they consider what manual pollination would entail.

      Possible, though, since there are other insecticidal options, regulation might work better - the EU wide ban on neonics being a case in point.

      Long term, I suspect species migration will also be a telling factor. Evolution might also have a say in the matter.

    • by hord ( 5016115 )

      Bees aren't native to North America and aren't the only pollinators. Also, it might be important to note that something like 40% of bee hives are transported to California yearly solely for the purposes of running on the gigantic food industry there. Maybe we should be re-thinking how we do food and why bees are such a critical part of it. I eat beef and cows don't need bees.

      • by jbengt ( 874751 )

        Bees aren't native to North America . . .

        wrong [bugguide.net]

        • by hord ( 5016115 )

          From the thing you tried to defeat me with:

              "Most people don’t realize that there were no honey bees in America until the white settlers brought hives from Europe."

          We call them native because we are stupid.

    • No bees means no pollination. Farmers recognizing this will voluntarily reduce their use of these pesticides once they consider what manual pollination would entail.

      +1 Funny

      You were making a joke at Libertarians' expense, right?

  • Any relation to Colony Collapse Disorder?

  • With Bumblebee gone, we might be spared another Transformers movie...

  • by ytene ( 4376651 ) on Tuesday August 15, 2017 @03:51AM (#55015227)
    We need to consider this story in abstract - and when we do it is much more disturbing.

    In essence, what has happened here is that a pesticide supplier, i.e. a commercial organisation that is required by law to have their products tested and approved by a Federal agency, developed and tested a product which has now been shown to be detrimental to the environment in a pretty significant way.

    But what would have happened if the detrimental impact from this chemical had caused sterility in men, for instance? Or early onset dementia? Or some other unpleasant, irreversible side effect? The whole point behind having Federal agencies and licensing requirements is to ensure that no chemicals released into the environment have such results.

    It's easy to think that, in the 21st century, these are exaggerated or "doomsday" scenarios. If we thought that, we'd be wrong. Mankind does not learn from past mistakes in this regard. In the mid 1940s, the US released huge volumes of DDT into the environment. The chemical caused the shells of (wild) bird eggs to be super-thin and especially brittle and was responsible for the near-extinction of the Bald Eagle. In the 1950s, the drug thalidomide became widely available - resulting in literally thousands of individuals being born with mal-formed limbs, unable to care for themselves. The list goes on...

    Bottom line: the moment we put profit ahead of public safety, scandals follow. As a sophisticated society, with a well-developed and functioning scientific community, there should be no excuses for the situation we see described in this article. The doubly sad and shocking thing is that it seems it will only be when we experience a potentially extinction-level event that we will see a determination to do something about this. By then it might be too late.
    • Incorrect! The DDT study was bullshit, and worth googling.

    • Mankind does not learn from past mistakes in this regard. In the mid 1940s, the US released huge volumes of DDT into the environment. The chemical caused the shells of (wild) bird eggs to be super-thin and especially brittle and was responsible for the near-extinction of the Bald Eagle.

      And the political reaction was hysterical: rather than a measured approach towards DDT use, we ended up effectively banning it, costing the lives of millions of people.

      In the 1950s, the drug thalidomide became widely availab

    • by Anonymous Coward

      The whole point behind having Federal agencies and licensing requirements is to ensure that...

      ...Corporations make profit.

      Welcome to 2017.

  • Corn is wind pollinated. Bees have nothing to do with it. Hence the tassels. [gardenguides.com]
  • by Togden ( 4914473 ) on Tuesday August 15, 2017 @05:11AM (#55015465)

    Nicotine has been shown to have a similar effect on mammals.

    https://www.ncbi.nlm.nih.gov... [nih.gov]

    I know its not the same, but they are part of the same family of chemicals, this should really have been investigated before they were approved for wider use.

  • For the record, as an aside to this, let's set the record straight on DDT:
    https://spectator.org/48925_dd... [spectator.org]
    Other publications follow up on that.
    We need less belief and more facts!

    • Wowee, what an Authoritative, Scientific reference! I'm Ever So Convinced by this Amazingly Credible Site!!!

      ROTFLMAO

    • Interesting article, though if the case for DDT is as overwhelming as it suggest, it suggests that environmentalists are much more better at propaganda than the major industry of chemical production. So, I checked two things quoted, about Ecuador reintroducing DDT and 2.5 million cases of malaria after Sri Lanka abandoned DDT. I found the first for Ecuador easily, it is a modest figure and seems to be sound. Not so for Sri Lanka, and other sources give a fraction of that figure, e.g. http://edition.cnn.com [cnn.com]

The Tao is like a glob pattern: used but never used up. It is like the extern void: filled with infinite possibilities.

Working...