• PotatoesFall@discuss.tchncs.de
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    6 hours ago

    Can somebody explain the fruit thing? I’ve seen fruit flies demolish fresh fruit. The amount of yeast biomass on them must be negligible at that point. Do the eggs/larvae spread the yeast before they start eating?

    • psud@aussie.zone
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      43 minutes ago

      There’s even the old Marx brothers joke “time flies like an arrow; fruit flies like a banana”

      The fruit fly trap taught to me by an entomologist friend is baited with wine, suggesting the fruit flies want fermenting fruit

      The trap: get a plastic fizzy drink bottle; bigger is better

      Cut off the top. The cut piece is a cone

      Place the cone (the top piece) upside down on the rest of the bottle

      Sticky tape the joint

      Bait with cheap wine or leftover wine or beer. The bait is poured down the funnel into the trap

      Her tastes were revealed in the description of baiting the trap — she specified red wine, but I have tested with various booze and fruit flies have no taste, they’ll go for anything. You could probably extract bait from the sourdough starter you made in lockdown and kept alive despite never making bread after that first try

    • azi@mander.xyz
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      4 hours ago

      The fruit flies you’ve seen eating fresh fruit are probably Drosophila suzukii (spotted wing fruit fly). Most (all?) other Drosophila species (including the model organism Drosophila melanogaster) only feed on rotting fruit. Though they’ll consume the sugars too, not just the microorganisms. So standard lab diets include sugar along with yeast and often cornmeal.

      There are also some more distantly related flies that feed on fresh fruit and are commonly called fruit flies, eg Ceratitis capitata (Mediterranean fruit fly)

    • RememberTheApollo_@lemmy.world
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      5 hours ago

      I’m sure the meme is apocryphal, and it’s not entirely correct. Fruit flies do eat yeast, yes…but they also eat the sugars in the fermenting fruit, not just the microorganisms causing fruit decay. I don’t know about the larvae at all, though.

  • Sabata@ani.social
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    9 hours ago

    I wish I had the time and money to create crimes against nature.

  • RedditRefugee69@lemmynsfw.com
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    10 hours ago

    Earthlings don’t eat Earth either. They’re still Earthlings.

    Sperm whales don’t eat sperm.

    Mayflies don’t eat May or any other month.

    • DesolateMood@lemm.ee
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      7 hours ago

      Earthlings don’t eat earth because “earth” isn’t something to be eaten. Sperm whales don’t eat sperm because sperm is (usually) not something to be eaten.

      Fruit, however, is supposed to be eaten, and by many, many animals. By calling something a fruit fly, the expectation for most people would be that its diet consists mainly of fruit

    • Monkey With A Shell@lemmy.socdojo.com
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      9 hours ago

      Speak for yourself, I rather like potatoes, or as the French call them ‘pomme de terre’ which if I recall would literally translate as ‘apple of earth’.

  • TerminalEncounter [she/her]@hexbear.net
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    11 hours ago

    I always felt bad for em, we either drowned them in alcohol or froze them. I also felt guilt boiling the ecoli I spent time genetically engineering (in a genetics uni lab)

    • psud@aussie.zone
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      39 minutes ago

      I have rescued so many fruit flies from my beer. You hardly need to drown them, just present them with a 5% ethanol by volume solution and let them drown themselves

      (My beer system is outside in my courtyard, fruit flies love the drip tray)

    • psud@aussie.zone
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      25 minutes ago

      That really makes me wonder what you mean by liberal

      My take on the word highlights individual freedom except where it interferes with other individual’s freedoms

      My take has most regulation put on corporations, ie. you and I are pretty free; Google has rules to follow (and so does the butcher, baker, and candlestick maker)

      To make it clear the common liberal position is individuals should be free to do as they want unless it is harmful to others; companies should be regulated enough to protect people, the environment, competition

    • ThePyroPython@lemmy.world
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      9 hours ago

      Liberals

      All authoritarians left AND right. Please learn your political compass so you can have grown up conversations.