Someone on my forum has a budgie with two different eyes, one with an eye ring and one all black.

 

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He's young, could it be the rings are not appearing at the same time? Is it a genetic accident. There was talk of something similar on another forum, but the pics have disappeared.

 

 

Any ideas???

It is perfectly normal for a Dominant Pied to have an ring in one eye and not the other. It is also possible to find Dominant Pieds with no rings. The cause of this is simply the gene which produces the 'pied' effect has effected it's control at this area just as with other areas of the bird. Any area that is subject to the action of the 'pied' gene will be altered if the mutation responsible applies its effect in that area. Generally the more 'pied out' a bird is the greater the chance of one or both eyes being affected and also the fleshy parts i.e. feet, cere, beak.

 

I suppose you could look at pieds this way to make it easier to understand.

 

1. Mutation for 'pied' removes melanin (black, grey, brown) pigments. Further instruction is required as it does not know where to remove the pigment, so............

 

2. Mutation for 'location' working with the 'pied' gene to tell the 'pied' gene where to remove pigment.

I find a lot of DF dominant pied have one iris ring and none in the other eye.

1. Mutation for 'pied' removes melanin (black, grey, brown) pigments. Further instruction is required as it does not know where to remove the pigment, so............

 

Let's make something clear so people are not confused, budgies only produce black melanine (eumelanine), they do not produce grey or brown (phaomélanine). The grey is really pale black and the brown, if I remember well is produce by the oxydation of the eumelanine. The different patterns on the different pieds appears randomly, except form some occurences, like the band on the dominant pied.

 

2. Mutation for 'location' working with the 'pied' gene to tell the 'pied' gene where to remove pigment.

 

Eventhough English is not my first language I manage fairly well, but honestly I don't understand what you are getting at.

When talk about 'location', are your reffering to the locus? When you talk of the pied gene, are you referring to the allele, they are diffrent with all the different pieds...

 

I don't want to pick your brain, I'm just trying to understand what you're saying.

I have a budgie similar to that. I´ve understood that the one black eye is caused by the hidden or visual recessive pied allel that is with dominant pied allel.

The budgie I have has a family where the recessive pied has popped up in some babies. This budgie has also siblings that have a white patch on the back of the head, which I´ve understood to be a sign of hidden recessive pied.

 

Here´s a picture of him and his eyes

 

Edited August 22, 201014 yr by Ailes

1. Mutation for 'pied' removes melanin (black, grey, brown) pigments. Further instruction is required as it does not know where to remove the pigment, so............

 

Let's make something clear so people are not confused, budgies only produce black melanine (eumelanine), they do not produce grey or brown (phaomélanine). The grey is really pale black and the brown, if I remember well is produce by the oxydation of the eumelanine. The different patterns on the different pieds appears randomly, except form some occurences, like the band on the dominant pied.

 

2. Mutation for 'location' working with the 'pied' gene to tell the 'pied' gene where to remove pigment.

 

Eventhough English is not my first language I manage fairly well, but honestly I don't understand what you are getting at.

When talk about 'location', are your reffering to the locus? When you talk of the pied gene, are you referring to the allele, they are diffrent with all the different pieds...

 

I don't want to pick your brain, I'm just trying to understand what you're saying.

 

I think the 'location' she meant here means from what location on the bird's body is the pigment going to be removed. (For example, clear flight feather, or clear patch on head, or clear band on belly, etc)

1. Mutation for 'pied' removes melanin (black, grey, brown) pigments. Further instruction is required as it does not know where to remove the pigment, so............

 

Let's make something clear so people are not confused, budgies only produce black melanine (eumelanine), they do not produce grey or brown (phaomélanine). The grey is really pale black and the brown, if I remember well is produce by the oxydation of the eumelanine. The different patterns on the different pieds appears randomly, except form some occurences, like the band on the dominant pied.

 

2. Mutation for 'location' working with the 'pied' gene to tell the 'pied' gene where to remove pigment.

 

Eventhough English is not my first language I manage fairly well, but honestly I don't understand what you are getting at.

When talk about 'location', are your reffering to the locus? When you talk of the pied gene, are you referring to the allele, they are diffrent with all the different pieds...

 

I don't want to pick your brain, I'm just trying to understand what you're saying.

 

One problem with forums is you just don't know if the person asking questions is well aquainted with the inner workings of the budgerigar or not. Your orignal post came over as somebody who knew very little yet then you come in later and obviously know more than your first post led me to believe.

 

I am well aware of the pigments in budgies and how they are produced. I put the colours black, grey and brown in brackets so people could understand better by visualising the colour. The word location in the second point was pertaining to placement, as in a pied area, not loci. Again trying to make it so the majority can understand it.