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Author Topic: How many land animals have...  (Read 1071 times)

Offline siasl

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How many land animals have...
« on: 17 February, 2018, 10:16:25 PM »
Blue pigment in their markings?

Offline P-Kasso2

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Re: How many land animals have...
« Reply #1 on: 18 February, 2018, 12:00:50 AM »
Well, there's this little chap down below. He is the only one I can think of - a Blue Iguana I saw when I was in the Cayman Islands years ago. And there are probably other blue or blue-ish reptiles such as chameleons.

But were you asking for land mammals rather than land reptiles

That's important because, where mammals are concerned, I don't think there are any blue land animals. As far as I know, mammals can't produce blue pigment; they can only produce two main pigments in their hair or fur - and those two colours are black or yellow, I think.

White hair or fur is simply a lack of pigment - and colours like browns and tans are forms of 'super saturated yellow' as my old art school tutors put it in their lectures on colour. (I didn't understand what they were going on about when they said "brown is a super saturated yellow" back then, and to be honest I still don't. Not that it matters much.)

"I live in hope"

Offline siasl

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Re: How many land animals have...
« Reply #2 on: 18 February, 2018, 11:13:19 AM »
I am led to believe that that little fella is not blue due to pigment, but instead due to micro structures.

By 'animal', I meant any living creature

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Re: How many land animals have...
« Reply #3 on: 24 February, 2018, 09:55:03 AM »
Not pigment? But blue microstructures? Well, you've lost me there. So I still cling to my own wonkily held theory that mammals can only produce two pigments - and blue isn't one of them.

I'd be delighted to be proven wrong though. I have a sneaky suspicion that you already know the answer to "How many land animals have Blue pigment in their markings?"

So I'll just have to sit back and watch the snooker on TV while I wait to see whether any other IA'er takes a stab at this question...or until your own sense of moral uprightness gets the better of you and you put us all out of our misery and tell us the answer. Any chance of that happening?
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Offline siasl

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Re: How many land animals have...
« Reply #4 on: 24 February, 2018, 06:52:10 PM »
"my own sense of moral uprightness"

Ha!

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Re: How many land animals have...
« Reply #5 on: 27 February, 2018, 01:37:22 PM »
"my own sense of moral uprightness"

Ha!

3 days and still waiting!  Have a heart Siasl.  The suspense is killing me.  I go to sleep counting blue spotted sheep.  It is time the great British public were told the answer!
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Offline siasl

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Re: How many land animals have...
« Reply #6 on: 27 February, 2018, 07:51:15 PM »
There's only one, apparently, and it's a butterfly. All is explained in the handy video...
https://youtu.be/3g246c6Bv58

Offline P-Kasso2

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Re: How many land animals have...
« Reply #7 on: 28 February, 2018, 10:43:03 PM »
There's only one, apparently, and it's a butterfly. All is explained in the handy video...
https://youtu.be/3g246c6Bv58

Excellent link, and I now see exactly what you meant when you said that the 'blue' in my nice little blue Iguana is not a blue due to 'pigment' at all, but instead is due to micro-structures.

So there really IS only one creature that has been smart enough to actually manage to produce a real blue pigment! And it's a butterfly. You were absolutely right, and I was absolutely wrong.

I can now go to sleep more easily now, counting flocks of Olivewing Butterflies flashing their unique blue pigmented splodges at busloads of passing lepidopterists in tropical forests from Mexico to Colombia.
« Last Edit: 28 February, 2018, 10:50:54 PM by P-Kasso2 »
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Offline siasl

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Re: How many land animals have...
« Reply #8 on: 01 March, 2018, 07:42:14 PM »
Glad you can sleep easy now.

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Re: How many land animals have...
« Reply #9 on: 02 March, 2018, 11:07:55 PM »
Glad you can sleep easy now.

Z Z Z Z Z Z Z Z z z z
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Anon

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Re: How many land animals have...
« Reply #10 on: 21 March, 2018, 08:30:49 PM »
What about the Blue poison dart frog?

Offline siasl

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Re: How many land animals have...
« Reply #11 on: 22 March, 2018, 09:06:50 AM »
That one's also a structural colour - more detail about frogs in general, and this one, here:
https://bybio.wordpress.com/tag/blue-poison-dart-frog/

Frogs have several layers of material in their skin that contribute to the colouring.

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Re: How many land animals have...
« Reply #12 on: 04 July, 2018, 04:30:59 PM »
Blue pigment in their markings?

I believe it's exactly 101. Forgotten the name though :( They're those weird things, live in wooded areas, in fungi/mushrooms usually ... Think they're about 3 apples tall.