I have a biology degree, but am A: plant focused and B: now a manufacturing engineer, because of you wanna do biology in the Midwest it’s corn or soy time. And those are boring. So only marginally more applicable.
You’re pretty spot on. The vast range of skin biomes directly impacts what sorts of organisms can live there. Even between a human arm, armpit, nose, and intestines you’ll have different organisms making up the majority of the biome, and potentially even organisms unique to that biome.
Changes to the region or loss of competitors in other connected biomes can allow normally less dominant organisms to gain a foothold. Absolutely how one gets a yest infection. You can even just KILL EVERYTHING and still different organisms might colonize the area faster, resulting in a difference that’s noticeable even at our comparably massive scale.
I didn’t particularly know what organisms prefer the fur, feather, or scale coated regions of animals, but they very much would have the same type of dynamic populations.
Ballpark guess, given how there’s a Salmonella risk associated with reptiles, I’d assume they have some biome that allows Salmonella to survive, if not directly thrive. Similarly with some varieties of Armadillo carrying leprosy.
OceanSoap@lemmy.world 1 day ago
Are biomes fighting to take over when we have sex? I have a friend who was getting multiple uti’s after having sex with her now-ex. Is that a result of clashing biomes?
Thisiswritteningerman@midwest.social 1 day ago
Not typically, as they’re normally pretty comparable between people. I’m sure specific exceptions exist based on hygiene and other external factors. In general, skin’s made of the same thing and the amount of sun and moisture and types of fluids excreted by our pores tend to be similar in the same areas.
Your friends armpits vs their ex’s are probably similar, pending they live in a similar area. Same would go for the genetials of their ex vs any of their other partners. Differentiating members of the opposite sex is important here: the biome of the vagina is drastically different than that the surface skin of a dick. However, a bacterial infection from one to the other wouldn’t be common.
The biomes are “contained” by your physiology and your environment. In the same way you wouldn’t normally find a fish (a wet biome like water with plenty of food) chilling in a tree (a dry, exposed to the open air location with little for a fish to eat) you don’t normally find yeast (common in dark, moist biomes with skin excretions to eat like armpits or the groin) on the back of your hand (bright, arid, with minimal excretions). Your environment can change that. See athletes foot or diaper rash. Normally dry skin being saturated for too long can allow yeast to proliferate.
Does/did your friend pee after every encounter? Not doing so does drastically increase the risk of UTIs, as the biome of the vagina and the urethra are not exactly the same, but similar. The biome of the outer area divides these areas normally, but during sex there’s quite a bit of fluid moving organisms about.
Also, as above, hygiene can play a factor. Clean your external skin periodically. Particularly after sticking it anywhere. New organisms and potentially new resources can be introduced to the biome. Soap and water are more than enough for normal hygiene, don’t get crazy. You can alter the biome or kill off the native organisms, which isn’t optimal.
Were they using a condom or some other form of external object for protection? Anything on the inserted, artificial object could absolutely alter the biome for someone. Probably not organisms (I’d hope it’s a fresh out of the package item or at least cleaned) but chemicals that might be feeding or killing native organisms.
OceanSoap@lemmy.world 18 hours ago
I have no idea if she was peeing after or not, but I know they weren’t wearing condoms. Really interesting though, thanks for the writeup!