As a biologist, Iâm always so happy with how versed your average Lemming is on evolution versus the bad place.
Comment on Tigers đ đŻ
JPAKx4@lemmy.blahaj.zone â¨4⊠â¨days⊠agoEvolution is throwing things against the wall and seeing what sticks (by sticking I mean reproducing bc you have better traits). If every single one of their prey and predators have this color blindness then orange and green would have the same effectiveness and whichever trait comes out first. If a prey/predator evolved to have better color vision then it would quickly become a disadvantage and after millions of years itâs possible they evolve to have green fur.
There could be other benefits like being easier to attract mates.
Also some animals can see infrared, so even if their fur was perfect for the environment they could still have issues being spotted, in which case the color doesnât matter as much and the colors for mating becomes more important.
SoleInvictus@lemmy.blahaj.zone â¨4⊠â¨days⊠ago
JPAKx4@lemmy.blahaj.zone â¨4⊠â¨days⊠ago
Iâm not exactly average, but Iâm definitely not a biologist lol
felsiq@lemmy.zip â¨4⊠â¨days⊠ago
Iâve also heard green coloring is hard to achieve for mammals, but iirc the source was some tumblr post so take that with a grain of salt.
deus@lemmy.world â¨4⊠â¨days⊠ago
I realized I couldnât think of a single green mammal so I DDGâd it and itâs true. In a nutshell, the pigments that give mammals their colors are limited to warm colors (so no blue or green) an you could also fake a green color by reflecting mostly just green light off you (itâs how birds do it) but it seems to be something only feathers and scales are good at, not fur.
felsiq@lemmy.zip â¨4⊠â¨days⊠ago
Yeah the only one I can think of are sloths, which is kinda cheating cuz their green color comes from algae in their fur instead of natural pigmentation lol
Glad to have it confirmed tho, thanks!
HelixDab2@lemm.ee â¨4⊠â¨days⊠ago
Related to this - all fabrics used by the military need to be both Berry-amendment compliant, and NIR compliant. What that means is that, first, they need to be made in the USA (because you donât want to outsource military equipment if you end up going to war with the country that makes shit for you), and second, it needs to not show up like a sore thumb under infrared light, A lot of fabrics and dyes will show up as hot spots under IR, which means that they show up great with night vision. NIR-compliant fabrics will still appear camouflaged under IR.
Thatâs why those nylon-cotton blend Crytek combat pants are something like $450, when the Chinese knock-offs made in poly-cotton are about $70.