Orange Cheeked Waxbills
- fastfreddy
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- Posts: 14
- Joined: 20 Feb 2014, 08:35
- Location: Sydney
An interesting take on Ísland species Genetics but I think that the Tri Coloured success story is less about Science and more about proximity!
- Tiaris
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- Posts: 3517
- Joined: 23 Apr 2011, 08:48
- Location: Coffs Harbour
The initial introduction of the species may well (was) more about proximity but its establishment to a viable and genetically vigorous population thereafter was what I was talking about with the initial comment.
- fastfreddy
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- Posts: 14
- Joined: 20 Feb 2014, 08:35
- Location: Sydney
Really??
- fastfreddy
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- Posts: 14
- Joined: 20 Feb 2014, 08:35
- Location: Sydney
I think that you might have already worked that out Myzomela!!
- Myzomela
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- Posts: 1545
- Joined: 24 Jan 2011, 18:44
- Location: Melbourne Vic
I disagree with you Freddy about the Tri-colours. Like Tiaris I agree that these birds were just more virile than many of the other species that were present in similar numbers at the same time. Nearly all waxbills in this position seem to increase in numbers initially but then their populations tend to dwindle. The Parrot-finches seem to be different and can do much better from a small gene pool, possibly because they have evolved this way as island species as has been suggested by Uraeginthus. They just seem to retain their fertility and not suffer from inbreeding problems to the same degree as other mainland species.
Nor did I hear of any rejuvenation of the genetics of this species, which of course doesn't mean that it didn't occur.
Nor did I hear of any rejuvenation of the genetics of this species, which of course doesn't mean that it didn't occur.
Research; evaluate;observe;act
- firetail555
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- Posts: 181
- Joined: 26 Oct 2012, 13:24
- Location: Botanic ridge Vic
Myzo is right. Once established the tri-colours have bred very well and have not taken a step backwards