Page 2 of 7
Re: LUTINO GALAH
Posted: 13 Jul 2011, 14:57
by natamambo
arthur wrote:The reasoning is simply to maintain consistency in the naming of mutations
Same manner of inheritance same name
Proof that said galah is in fact a lutino, would be to combine 'lutino' and 'blue'. This would result in an 'albino' galah . .
Just as would combining a 'lutino' and a 'blue' in any of the 'green' birds . . . parrots, finches, or strutting ducks
Happy for those who know the genetics to say it is sex linked recessive. So is opaline but we don't call opaline "lutino" just because it has the same inheritance pattern. It's not an albino, as there is colour, so there goes that consistency again. In fact budgies are albino if white, lutino if green. Oops...
Re: LUTINO GALAH
Posted: 13 Jul 2011, 15:14
by Danny
Tintola wrote:Dictionary (Quote)
Search Results Web definitions
Lutino - Xanthochromism (also called xanthochroism or xanthism) is a term that may be applied to birds, fish and other animals whose colouration is unusually yellow through an excess of yellow pigment, or possibly a loss of darker pigments that allows yellow pigment to be unusually dominant. ...
en.wikipedia.org/wiki/Lutino
I don't know who coined the name "Lutino" for this Galah mutation, but I would love to know the scientific, or otherwise, reasoning for their decision. As can be seen from the above ,"Yellow" must be involved, as the term itself comes from the Latin word "Lutea" meaning yellow ad can be found in many descriptive Latin names of plants and some of the animal kingdom as well. Eg. pachystachys lutea (The Shrimp Plant) or Geocrinia lutea (The Saffron Frog). To my way of thinking, I could not even be called an albino and especially not lutino, as the other body colours remain the same so Clear-wing or White-wing would be a more appropriate description. I'm always open to learning, so as I said earlier i would like to know the reasoning for calling it Lutino.
I suggest we all read page 51 of Terry Martins book. The Lutino gene has no influence on yellow, structural colour or pigment distribution whatsoever. The lutino gene acts directly on the grey family pigments, causing them to be variably lost. In a green bird, this leaves behind yellow. In a grey bird, this leaves behind white (or shades of). To produce an albino in a green bird you need lutino to remove the grey family pigments and then blue to remove the yellow family pigments - this will create white in this group. As a galah has no green, it appears white in those areas dominanted by the grey family pigments.
Re: LUTINO GALAH
Posted: 13 Jul 2011, 15:42
by natamambo
Danny, I accept that the "ino" gene acts on grey colour. However when I studied genetics a clear distinction was made such that a true lutino / albino by definition also had red eyes and the rose galahs we saw when I was growing up had normal coloured eyes (or so I had always remembered anyway).
The fawn lonchuras are sex linked, probably fawn in other birds too (I have no experience in the other species fawn mutation) - is it possibly the same group of alleles at work here rather than the ino gene?
Re: LUTINO GALAH
Posted: 13 Jul 2011, 15:54
by Tiaris
My neighbours breed Lutino Galahs & they definitely have red eyes.
Fawn Stars are autosomal recessive as are fawn St Helenas.
Re: LUTINO GALAH
Posted: 13 Jul 2011, 16:38
by natamambo
Tiaris wrote:My neighbours breed Lutino Galahs & they definitely have red eyes.
In that case, lutinos they are.
Glad we cleared that one up in our usual friendly & cheerful manner (grins, ducks & runs)
Re: LUTINO GALAH
Posted: 13 Jul 2011, 17:36
by Tintola
Not having a concise understanding of genetics, I accept everything that has been put forward. I think that the basic confusion arises from the naming, If the inheritance pattern is the same, only producing a white bird and not yellow, then should it not be renamed to something else, as lutino means yellow.
A normal cockatiel is mostly grey and has no green in it, by this logic a white cockatiel should be called a lutino,not albino. Or are there some other factors making it white?
Re: LUTINO GALAH
Posted: 13 Jul 2011, 18:01
by arthur
A normal cockatiel has yellow in its colour makeup and a lutino cockatiel is yellow(with red cheek patches)
A 'white-face' cockatiel is actually a "blue mutation", and here is a good example of the lack of consistency. I doubt that a white-faced cockatiel will ever be called a 'blue cockatiel' but it should be
The "blue" causes green feathers to become blue by eliminating the yellows . . cockatiels have no green feathers, so no blue feathers in its "blue mutation"
But they do have yellow and red feathers (head and face)
The "blue" causes a loss of red and yellow . . thus the white face
And, what do we get when we combine the 'lutino' and the 'blue' cockatiel . . Of course we get the ALBINO just as in all other birds
Re: LUTINO GALAH
Posted: 13 Jul 2011, 18:07
by Tintola
OH MY GOURD!!!!! I'm so glad that I'm mainly into normal/wild coloured birds.
Re: LUTINO GALAH
Posted: 13 Jul 2011, 18:20
by natamambo
Hey Tintola, it gets better than that. Green budgies have a yellow face. Blue Budgies have a white face. Green (wild) is dominant. However there are also yellow faced blues (which also have yellow tipped wings instead of white), the YF is dominant over blue but recessive to green. Furthermore the YF comes in two "strengths" type 1 (rarer and "better" on the show scale) which is the face and wing tips only, Type 2 causes the yellow to wash / diffuse through **all** the blue feathers and - yep you guessed it - yellow + blue = green. I had the "pleasure" of telling my mate the other day his new green budgie was actually a YF Blue Type 2. The giveaway is that the green is bluish, especially under the wings and around the vent.
But now we're waaaaaaay OT
.
Re: LUTINO GALAH
Posted: 13 Jul 2011, 18:33
by jusdeb
Its a nice Galah
