Talk:Budgerigar colour genetics

Wikify

I've started the wikification process. It's not an easy one but I'm hoping to complete this soon. Dingopup 00:10, 10 December 2006 (UTC)

History

I've boldy gone and made some changes to the article. The information comes from "The Complete Book Of Budgerigars" by John Scoble (published in 1981 by Lansdowne Press, Sydney). The book has information on the history of when mutations started appearing, but some of that information conflicts with the information in the article (in such cases, I have left the article as it is).

First of all, the article says that the first mutation bred in captivity is Green Suffused in 1870, the book says that the first captive-bred mutation is Yellow in Belgium 1872. Also, the article says that in 1918-25, GreyWings Green & then GreyWings Blue England & Continental Europe, and in 1935 YellowFacedBlue and GoldenFacedBlue occurred in several 'places'. The information from the book says that in 1875 Greywings appeared in Belgium and in 1937 Yellowface mutation appears in England. Roxybudgy 11:58, 4 November 2006 (UTC)

Name

This article should be re-named Genetics of color in Budgerigars, as it does not cover other aspects of the species genetics. Unfortunately, I do not know how to accomplish this, boldly or otherwise.

Me, neither. It's a good title change but I don't know how to make that happen. Gingermint (talk) 10:21, 30 January 2012 (UTC)

Links to specific colour mutations

I have included a link and a See also to a new page, Blue Budgerigar Mutation, which I am developing. I hope eventually to cover all the budgerigar colour mutations in this way. Please review and comment. Trevor37 (talk) 18:29, 14 March 2009 (UTC)

Good job, sir! Without trying to come across as patronizing, that is one of the best articles written by a new user that I've seen so far here. A very informative and well-written piece. I think that you've managed to get the tone of the article just right for WP too - not too simple, not too complex. You should definitely continue! Quite honestly, WP has been crying out for expert input in the area of parrot colour genetics - and we have quite a few existing articles in need of work too (you might be able to do something useful with Recessive pied Budgerigar for instance, to provide an example off the top of my head). Do you know much about the genetics of Cockatiels and Peach-faced Lovebirds, as a matter of interest? --Kurt Shaped Box (talk) 23:23, 14 March 2009 (UTC)

Hi. Thanks for the nice comments :) I know quite a lot about budgerigar genetics, and as you can see I have access to a fair number of oldish books and periodicals on the subject, but I'm afraid I don't have any expertise on any other parrots. I will get round to pieds eventually, but as one of my least favourite varieties they are a little way down my list. BTW, thanks for the pictures of the blues. Trevor37 (talk) 19:33, 15 March 2009 (UTC)

Genetic symbols

It is desirable to have a consistent set of symbols to represent the mutations in the budgerigar, to be defined on this page and used in other pages dealing with this topic. I propose to use the symbols defined by Taylor and Warner (1986) by default, modified or extended to accommodate later research as found in, for example, [1] and [2]. Where there is disagreement I'll choose one and place a comment on this page giving the reason. I'll leave this comment a few days to await response, then I'll begin the process of changing this page. Trevor37 (talk) 18:26, 28 March 2009 (UTC)

Is there an alternative system of symbols in common use anywhere that could possibly make your changes controversial? --Kurt Shaped Box (talk) 20:12, 29 March 2009 (UTC)

I have to be frank and say I do not know for certain, but I'm not aware of any standardised and agreed list. That was part of the reason for placing this topic here, in the hope that someone else might provide input. In addition to the two refs above there is also Martin Rasek's calculator which lists his genetic symbols, see [3]. Before I start I'll search for any more. Trevor37 (talk) 20:39, 29 March 2009 (UTC)

The book by Terry Martin, A Guide To Colour Mutations and Genetics in Parrots, ABK Publications (2002), ISBN 0957702469, looks as it if might contain what could become definitive genetic symbols for parrots (inc budgerigars), but I don't have a copy, neither does my local library, and nor does Amazon. If anyone has access to a copy it would be useful to know if it does contain recommended symbols for budgerigar mutations. --Trevor37 (talk) 09:45, 19 April 2009 (UTC)

Dilute locus

The first set of mutations to consider is the allelic series Greywing, Clearwing and Dilute. Taylor and Warner used C, c^g, c^w and c^d for this series, but more recent and professional practice is to use dil⁺, dil^gw, dil^cw and dil^d. The accepted professional practice seems more appropriate for an enclyclopaedia, so that is adopted here. —Preceding unsigned comment added by 81.154.97.216 (talk) 08:41, 4 April 2009 (UTC)

(This was me Trevor37 (talk) 09:08, 4 April 2009 (UTC))

Dark locus

All sources seem agreed that D is the accepted symbol for the Dark mutation. —Preceding unsigned comment added by Trevor37 (talk • contribs) 15:41, 4 April 2009 (UTC)

Blue locus

There is as yet no widely accepted understanding of the Blue and Yellowface genetics, but the prevailing view of geneticists is that these are all alleles at the same locus, and that the allele previously called Yellowface Mutant 1 by Taylor & Warner is more properly renamed Blue 2, since its action is identical to the Blue mutation. [For a clear explanation of this see [4]. I propose we adopt this approach, using the symbols b¹ and b² for the Blue and Yellowface 1 mutations. I prefer the shorter b over the alternative bl for this locus, as the Blue mutation is the commonest of the mutations vying to use the symbol b. Trevor37 (talk) 22:13, 4 April 2009 (UTC)

Wild-type allele

I decided to use a "+" superscript to denote the wild-type allele. This is the accepted practice in Europe, and also makes it unambiguously clear which allele is the wildtype. So, for example, I've used D⁺ to denote the wild-type allele of the Dark locus, and just "D" for the Dark mutant allele, rather than D and d, which leave it unclear which is the wild-type. If the mutant allele is dominant all symbols (including the wild-type symbol) are in upper-case; if the mutant allele is recessive all symbols are in lower-case. Trevor37 (talk) 11:40, 10 April 2009 (UTC)

Use italics

It seems to be the accepted practice to write genetic symbols in italics within text. I shall adopt this convention on all budgerigar pages, making changes to conform on existing pages. --Trevor37 (talk) 08:22, 24 April 2009 (UTC)

Ino locus

The symbol ino for the Ino allele at the sex-linked ino locus is prefered, although i is quite widely used. More problematic is the symbol (and name) for the mutation producing the Texas Clearbody. This is sex-linked and an allele of the ino locus. Several other names for this mutation have been used or proposed, including SL Clearbody, Pallid with symbol ino^pd (MUTAVI), and Par-ino with symbol i^cl (Clive Hesford). Neither Pallid nor Par-ino are familiar terms in budgerigar circles, so I propose to use the term SL Clearbody for the mutation, Texas Clearbody as the alternative name for the variety and ino^cl as the symbol for the allele.--Trevor37 (talk) 20:08, 24 April 2009 (UTC)

German Fallow

The MUTAVI site calls this gene Bronzefallow, but as this name is unknown in budgerigar circles I have used the standard name 'German Fallow'. The same site suggests on scanty evidence that the German Fallow and Non-sex-linked Inos are allelic. As this is unproven I have kept separate gene loci for these two mutations, using fg for the German Fallow. Trevor37 (talk) 08:14, 5 May 2009 (UTC)

English Fallow

The MUTAVI site calls this gene Palefallow and both Dunfallow and Beigefallow have also been used, but as these names are unknown in budgerigar circles I have used the standard name 'English Fallow', with the corresponding genetic symbol fe. Trevor37 (talk) 15:40, 6 May 2009 (UTC)

Scottish Fallow

The MUTAVI site calls this gene Plumeyed fallow, but as the eye colour is debatable and the name is unknown in budgerigar circles I have used the standard name Scottish Fallow with genetic symbol fs. Trevor37 (talk) 15:42, 6 May 2009 (UTC)

An image I uploaded

If you want you can use for whichever category of colour it goes into. Spiderone (talk) 16:47, 24 April 2009 (UTC)

Do you happen to know which variety your bird is? Also, is his face white, or yellow? I'm finding it difficult to determine, the way the photo is lit (it's possible that my monitor's settings have something to do with it too!). Thanks. --Kurt Shaped Box (talk) 03:05, 25 April 2009 (UTC)

It looks like it might be an Olive, but because it is so difficult to tell it doesn't help us to indicate the appearance of a particular variety, even if we know what it is, especially as we already have a clearer picture of what an Olive looks like (see Dark budgerigar mutation). --Trevor37 (talk) 08:04, 26 April 2009 (UTC)

It's an olive budgie with a yellow face Spiderone (talk) 09:59, 27 April 2009 (UTC)

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moved out of unassessed on the genetics project

1/15/17 DennisPietras (talk) 03:33, 16 January 2017 (UTC)