this post was submitted on 22 Aug 2024
196 points (95.8% liked)

Showerthoughts

29603 readers
1716 users here now

A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.

Rules

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. Avoid politics (NEW RULE as of 5 Nov 2024, trying it out)
  4. Posts must be original/unique
  5. Adhere to Lemmy's Code of Conduct

founded 1 year ago
MODERATORS
 

The way our bodies react to mosquito saliva motivates us to avoid being bitten. Which must have had evolutionary benefits, keeping us away from diseases.

I.e. all those people that didn't mind them and never got itchy from mosquito bites appear to have died out. And mosquitoes really wish that wasn't true.

you are viewing a single comment's thread
view the rest of the comments
[–] Boozilla@lemmy.world 74 points 2 months ago (1 children)

Interesting, I never thought about this. It makes sense. Early peoples definitely took measures to reduce bites. Burning specific plants that repel them. Slathering their skin with mud, clay, or oils. Crafting mosquito resistant clothing and bedding. For thousands of years before germ theory.

[–] takeheart@lemmy.world 14 points 2 months ago (2 children)

While mosquito bites are unpleasant in themselves due to the itching and swelling I don't think it's common for cultures to have worked out the causal relationship between mosquitos and diseases like malaria. But I'd be happily educated otherwise.

[–] kireotick@lemmy.world 39 points 2 months ago (2 children)

Well the point is that people who had a bad reaction to mosquito bites tend to avoid getting them. Therefore they tend to live longer because they also happen to avoid the diseases, live longer and have more babies. They don't need to understand anything.

The point is that the itching evolved because it could be beneficial for us. The bites are not unpleasant in themselves as you say. They are unpleasant because we evolved to feel them unpleasant. It is the same as sex being pleasant. It is that way because it is beneficial.

I'm not disagreeing with you, but I think it's a histamine response which is just directed at parasites in general.

[–] kamenoko@sh.itjust.works 3 points 2 months ago (1 children)

Biting insects kill more people than any other animal group by miles, the reaction response is more or less the same in every mammal. Evolution doesn't evolve to anything, that's selective pressure.

This behavior predates humans as we know ourselves today.

[–] JustZ@lemmy.world 1 points 2 months ago* (last edited 2 months ago)

Biting insects kill more people than any other animal group by miles

I take issue with this obvious selection bias. Of course this is true when you're pre-selecting for only the insects that bite people. If you were to preselect only those sharks that have bitten people, so-called biting sharks, I think the shark-bitten people have a higher average early mortality than the insect-bitten people. /s

[–] lord_ryvan@ttrpg.network -1 points 2 months ago (1 children)

Just my two cents, but if you see John getting bitten and then getting sick, and you see Mary getting bitten and then getting sick, you're probably going to think “Gee, seems like people get sick of those bites. Better cover my skin, huh?”

I'm pretty sure people have connected the two. While it may not seem like it on a day to day basis, people are pretty smart when there's enough of them and you give it some time.

[–] JustZ@lemmy.world 1 points 2 months ago* (last edited 2 months ago)

I agree. It might take one person a long time to figure that out, if ever, but when you've got a few thousand or a few tens of thousands of people, and like 10,000 years, you can narrow it down.