Tag Archives: anatomy

Bats, cats and Archeopteryx

A bit more biology about the Vokh and iVokh. They really are a bit like Frankenstein’s Monster!

Okay, so I’ve said that both Vokh and iVokh are flying hermaphrodytes, and in book 1, I mentioned that their ‘lungs’ are in their wings which are like ‘leather sacks’. These sacks can also be inflated with lift [a component of their atmosphere which acts a bit like helium] to help them fly. But where did some of these ideas come from?

The leather wings idea came from the common bat:

But I needed the iVokh to be capable of some technology, and while bats do have a ‘thumb’ to help them climb, they can’t make or use tools. That was when I realised that the iVokh needed proper hands. Trouble was, if they had more human-like hands, they couldn’t have long, bat-like ‘fingers’ supporting their wings.

It was at this point that the idea of inflatable wings occurred to me. I can’t take any credit for it as parafoils use the same principle, although in a very different design.

But if the Vokh and iVokh can inflate their wings, how do they de-flate them?

Enter brilliant idea number 548: let them have jets!

The modern jet engine basically sucks air in and expels it under incredible pressure to ‘push’ the plane along. The young man explaining the process in this video is a fabulous teacher!

The Vokh and iVokh don’t have combustion chambers, but they do physically compress the lift before squeezing it out of tiny sphincters on the trailing [bottom] edge of their wings. If any of you read book 1, Vokhtah, you may remember that the Rogue had incredibly powerful jets, allowing it to perform almost miraculous feats of acrobatics in the air.

For less virtuoso flyers like the iVokh, jetting requires something to push against – i.e. the ground, a wall etc. The stronger the flyer, the further that solid surface can be from its jets.

One problem with jetting is that once the lift is pushed out through the jets, the wings effectively deflate, leaving them ‘limp’. The best flyers can glide on limp wings, but for most iVokh, no lift means no flight. This is why they never use up all the lift in their wings.

Another issue I had with the flight mechanics of the Vokh and iVokh had to do with the surface area of their wings. Clearly the wider the wings the better their ability to fly. But I didn’t want them to actually look like bats.

I ignored this problem for quite a while until it suddenly struck me that almost all of the animals of Vokhtah had six limbs, not four!

Why would the Vokh and iVokh be any different? Um, because they’d look stupid? But what if that second set of arms weren’t actually visible?

I’m still working on a concept drawing, but basically the main arms would be situated in much the same position as human arms. The second set, however, would be located lower down on the torso and would simply  ‘move’ the folds of leather into various positions when not inflated. For example, when I write that such-and-such folded its wings to its sides, the folding is done by the second set of arms.

I mentioned cats in the title because of something I wrote in my last post. How could iVokh have both fangs and grinding teeth?

This photo of a cat’s skull explains:

As you can see, the jaws of a cat have those oversized canines as well as a total of four molars – one on each side of the bottom jaw and one on each side of the top jaw – plus eight pre-molars. Unlike the cat, iVokh have just two fangs and four molars. Oh, and my aliens also share a vertical pupil with both cats and foxes!

And finally, Archeopteryx. What body part did I steal from this ancient ancestor of birds?

Answer: the legs:

The bones of the leg are essentially the same as that in humans – thigh bone, knee, shin – until you get to the ankle. This is the point at which the leg of the Archeopteryx looks as if it has a second, back-to-front knee. It doesn’t. That joint is basically the equivalent of our ankle, but the foot is different. The reason is that humans are one of the few animals that walk with a ‘plantigrade’ foot posture – i.e. heel down first. Most other animals, including the Archeopteryx, run on their toes.

I’ve turned comments off as this kind of research is my obsession not yours, but thanks for keeping me company!

cheers

Meeks

 

 

 


Echolocation in iVokh, dolphins and humans

I started thinking about the creatures of Vokhtah back in November, 2004 when I did Nanowrimo for the first time. I knew right from the start that the Vokh would be vicious, psychopathic hermaphrodites with wings, but as I explored their lives I realised that they couldn’t possibly live together without killing each other. That was when I stumbled across a weird fact from nature – crocodiles allow plover birds to hop in their mouths and clean scraps of meat from their teeth!

This is called ‘mutualism’, a symbiotic relationship in which both parties gain benefits. In the case of the plover bird, it gets to eat the meat it picks from the crocodile’s teeth. The crocodile, on the other hand, gives up a very small snack in exchange for keeping its teeth clean and healthy.

I have no idea how such a relationship would have evolved in nature, but it did give me the answer to the Vokh riddle: my huge, intelligent aliens would live in a symbiotic relationship with another species. Enter the iVokh.

I won’t bore you with a history of how the iVokh evolved in my mind, it’s enough to say that they had to be similar to the Vokh, but also different. One of those differences ended up being teeth, or to be more exact the shape of the iVokh jaw. You see the reason the Vokh tolerate the iVokh is because they need the iVokh to raise their offspring. Part of that requires that the newborn Vokh be fed a gruel of mashed up grains and tubers.

But if the iVokh were like the Vokh and only drank blood [sorry I’m kind of skipping a few vital facts here], then how would they know to give the Vokhling gruel?

The answer lay in the fact that the iVokh had retained their molars [grinding teeth], and hence could chew. This gave them the ability to feed on a number of different types of food, not just blood. By contrast, the Vokh were so powerful that they could live on nothing but blood. In time, their teeth and jaws evolved to make it easier for them to eat their favourite food. That required bigger, stronger fangs, not molars.

But what do molars have to do with echolocation? Before I get to the Vokh and iVokh, I’d like to give you a quick description of how echolocation works in dolphins:

https://dolphins.org/anatomy

  1. In the simplest terms, dolphins send clicks through that bulge on their heads. It’s called the ‘melon’ and it amplifies the sound.
  2. The clicks spread out through the water and ‘bounce’ against objects in the water.
  3. This bounce returns to the dolphin as a kind of echo.
  4. The echo is captured by the dolphin’s lower jaw and is transferred to its inner ear [maybe like a vibration?].
  5. From there, the echo goes straight to the auditory part of the dolphin’s brain where it is translated into a kind of ‘image’.

The important thing to note here is that the echo does not return to the dolphin’s ear, or at least not directly. First it goes to the jaw. And there, tah dah, was one perfect, evolutionary difference between the Vokh and iVokh. As the lower jaw of the Vokh changed, so too did its ability to echolocate. It can still ping enough to avoid walking into things in the dark, but not enough to ‘see’ objects at a distance.

In my mind, I see this qualitative difference as being similar to the difference between the echolocation of a dolphin and a human:

I’ve mentioned Daniel Kish and his amazing ability before, yet for all of his skill, he cannot operate in his own environment as well as a dolphin operates in the ocean.

So that’s how the iVokh got echolocation. 🙂

In case anyone is wondering, the world of Vokhtah is a strange melange of science and paranormal fantasy. Along with their physical characteristics, most of which have parallels in real biology, the Vokh and iVokh also have mental skills that don’t. Despite the best efforts of all sorts of scientists, we still lack proof that telekinesis or telepathy actually exist. But while I love science, I’m not a scientist, and paranormal talents are fun to write about. 🙂

Thanks for coming on this odd little journey with me!

cheers

Meeks

 


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