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#invert – @koryos on Tumblr
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newt in the throat

@koryos / koryos.tumblr.com

Call me Koryos. I study animal behavior and I write fiction. You'll see a lot of that here. Want to read my science articles? Click here. Want to read my fiction? Click here. Wondering what that weird underwater creature in that one post is? It's probably one of my axolotls. I am NOT a vet. If your pet has medical or behavioral issues please contact a vet. I cannot give you professional advice. You can read my ongoing webnovel EARTHCAST for free! And you can buy my published series, DARKEYE, here!
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alphynix
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eartharchives
#animal#invert#hymenopteran#wasp#animal behavior#wasps are amazing and i will die on this hill
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silvrang
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typhlonectes
Animal with an anus that comes and goes could reveal how ours evolved
The warty comb jelly is unique among animals, because its anus completely disappears when it has finished defecating
www.newscientist.com|Michael Le Page
A jellyfish-like creature has a neat trick that makes it unique among animals: its anus forms only when it needs to defecate, then disappears without a trace.
“That is the really spectacular finding here,” says Sidney Tamm of the Marine Biological Laboratory in Woods Hole, Massachusetts, who made the discovery. “There is no documentation of a transient anus in any other animals that I know of.”
Tamm thinks the discovery might represent an intermediate stage in evolution…                    
#now this is the content this blog has been missing#transient anus#aka shroedinger's anus#anatomy#invert#cnidarian#ctenophore#queue it
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alphynix
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bogleech
Slime-fighting slug can superglue enemy frogs to trees for days
After finding a tree frog stuck fast to a branch, biologists in Australia have discovered that a species of slug defends itself with extremely sticky mucus
www.newscientist.com|Michael Le Page

Australia’s red triangle slug is the first slug observed to “glue down” its predators with a specialized defensive slime, though similar slime can be found in other slugs and probably served the same purpose all along. If it’s extra powerful in this species, I’m gonna guess the bizarre “red triangle” marking might be a warning sign.

#good for her#animal#invert#gastropod#slug#queue it
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alphynix
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eartharchives
Bees Can Solve Math Problems That Would Stump the Average Toddler
Bees don't just buzz around and make honey; they also do math problems in their free time that would stump the average 4-year-old.
www.livescience.com

Last year, a group of researchers in Australia reported that bees understand the concept of “zero.” Now, a new study by the same group suggests that the insects can also do basic addition and subtraction.

#bee math#animal#invert#honeybee#animal behavior#queue it#oversensationalized title
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sinobug

Clear-winged Forest Glory (Vestalis gracilis, Calopterygidae) This large damselfly species is my favourite damselfly to observe and photograph. They are not associated with waterways but are found on hillsides in thick vegetation usually bordering a sunny clearing or path. They are always in distinct pairs and often in groups of pairs. Furthermore they occupy a fixed territory which means they can be revisited on multiple occasions. It is a joy to see them there “waiting” for you on a return visit. They congregate together in a dark corner as a group until the sun is at its warmest and then assume well-lit perches facing the open ground and from there they regularly dash out to capture small flying insects on the wing and returning to their perch to devour their meal. Initially they are very shy and flighty, but once I move amongst them for ten minutes or so they become amazingly tolerant to the point that I can reach out and touch them. Apart from their iridescence and hypnotising eyes, the most memorable feature in my mind is the crackling cellophane sound of their almost clumsy flight. They are the closest things to fairies I can imagine….. by Sinobug (itchydogimages) on Flickr. Pu'er, Yunnan, China See more Chinese dragonflies and damselflies on my Flickr site HERE…..

Source: Flickr / itchydogimages
#animal#invert#insect#damselfly#queue it
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silvrang
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vintar

i’m reading a book on spider biology and here’s some things i’ve learnt so far

  • they can’t move their eyes so when they need to focus on something they move their retinas independently of the rest of the eye instead and i can’t precisely pinpoint why this creeps me out but it does
  • i mean just look at that
  • they have two main eyes and the rest are secondary
  • which deeply upsets me because there’s quite a few six-eyed spiders and this wasn’t weird when it was just going from a larger number to an arbitrary smaller number, but knowing that they’ve got six because they decided to jettison their main eyes and run on backups is much much weirder
  • wolf spiders have the best goofy little monster faces. this isn’t strictly a biology fact but it’s still true
  • big spiders have 30-40 heartbeats per minute and lil dudes can have up to 100
  • their arteries run from the heart, into the chest, and down their legs, and then they open up and dump their blood in their feet. just right in there. let it slosh around. that’s all you need from a circulatory system, right.
  • their blood sloshes around and eventually winds up at the lowest point of their bodies, where their lungs slurp up all that loose blood and shove it back into the heart
  • instead of being made in bone marrow or anything, their blood cells just bud directly off of the heart muscle into the bloodstream
  • they can taste with their feet but not their mouths
  • god spiders are weird
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vassraptor

thanks to this post i just looked up spider anatomy on wikipedia (actually i did a search for “spider organs” on duckduckgo and that’s what came up first) and it was even weirder than i imagined, their heart looks like WHAT? and did i misunderstand the diagram or do they have intestines running down all their legs? anyway a+++ would recommend

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vintar

i get the gist that if there’s something that makes you go “that can’t be right” wrt spiders, it absolutely is right

mgd is midgut branches and lmao yep they poke down into the leg segments sometimes (or, as in friend jumping spider in fig b, up surrounding the eyes…….)

their hearts are just tubes! big tubes! so big that you can see them from the outside!!

there’s so much happening inside spiders, who authorised this

#they're PERFECT is what they are#animal#invert#arachnid#spider#arachnophobia cw#long post#queue it
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spiders-spiders-spiders
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vintar

hello i have learnt more spider facts

  • spiders will pull their own legs clean off if they get damaged because most of them can regrow legs during molting, which explains why you often see spiders missing a leg but never any missing half a leg?
  • some remarkably distressing scientists proved this by getting a spider to pull off all of its legs and then feeding its limbless torso for months until it sprouted a full complement of legs again and then hopefully used them to get the fuck out of dodge
  • baby spiders don’t get lenses until their first molt and before that they just have baby eyes and while this ought not to be any weirder than the concept of baby teeth, welp,
  • there are so many spiders floating around thousands of metres up in the air that they’re described as “aerial plankton”
  • The Sky Is Full Of Spiders
  • there are spider-parasitising spiders but instead of laying eggs in organs or stealing blood or anything like that they just ride on top of bigger spiders and steal snacks when their mighty steed is eating
  • there are ant-mimicking spiders that use their disguises to raid ant nests and w/e but there are also ant mimics that just. hang out. they make fake ant colonies full of fake ants. sometimes the actual ants that they’re mimicking find their house and live with them. stealth 100
  • some mother spiders live in communal family nests, where multiple mothers can work together to bring down bigger prey while all their collected babies are cared for by the babysitters
  • some mother spiders feed their babies mouth to mouth like birds
  • some mother spiders carry their babies around and i was aware of this but not the fact that if you steal their eggsac they’ll freak out and search for it for hours and sometimes end up adopting anything that’s vaguely the right size, they will carry around empty snail shells for weeks and lovingly dote on them…
  • guys i am literally about to cry over spider moms
#SPIDERS! ARE! GOOD!#animal#invert#arachnid#spider#arachnophobia cw#queue it
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