DESCRIZIONE DEI SOGGETTI MUTATI : Nei soggetti in questione le marcature, le striature e le vergature hanno subito una riduzione cosi' drastica da rimanere appena percettibili con una tonalita' complessiva grigio-perla, fatta eccezione per la punta delle remiganti e delle timoniere che risulta melanizzata in modo normale, cioe' scura. L'ossidazione del becco e delle zampe sono tali da poter essere classificati con certezza come "NERI". Gli occhi sono neri. Il sottopiuma e' grigio chiaro. La collocazione della melanina nella parte inferiore del rachide delle penne forti porterebbe a fare pensare che si tratti di un fattore allelico all'onice dai quali derivano, e di conseguenza anche all'opale.Testo di : Francesco Chieppa - Carlo Maria Nobili - Foto e allevamento di : Sjaak de Jong.
History of Nero Perla : In 2015 a new appearance in canaries – currently named NERO PERLA was discovered by the breeder Carlo Maria Nobili in Monza/Italy. From the pairing of a White Dominant Onyx canary & a White Dominant Black canary the breeder C. M. Nobili noticed a phenomenal result in the first clutch.
One of the hatched chicks had a light-skinned appearance. After the first feathers grew, this nestling pointed as a new colour variant in canaries. At this time, it was not yet clear whether it was a real new mutation or just a modification. At the second breeding round, three light-coloured, same to the first appearance, and one still a white black onyx canary were the result. And in the third and last round of the season 2015 C. M. Nobili got four white black canaries and one black onyx canary as result. In total 13 offsprings, of which 4 were black onyx blacks, 5 white blacks and 4 same offsprings (2 males & 2 females) with an unknown appearance, later named as NERO PERLA CANARY
Another phenomenon was that both parents are from in the ground colour white dominant, but in this case a Lethal-Factor was not discovered. All offsprings are White dominant in ground colour with a good health, the best preconditions to start a controlled breeding in the next breeding season. And finally after the following breeding seasons 2016 & 2017 C. M. Nobili was able to prove that "Nero Perla" is a real mutation with an autosomal recessive inheritance.
After the breeding season 2017, a proud stock of 58 mutations can be counted. Also some darker specimens occured, which are currently named as “Pearl Type 2”. The Pearl Type 2 shows a more marked pattern. Currently there are two colour variants:
° Pearl Type 1, with a lighter melanisation (first occur in 2015)
° Pearl Type 2, with a darker melanisation (first occur in 2017) In fact, these results were not expected.
What are the Characteristics of the mutation Nero Perla so far?
1. Currently the Nero Perla mutation occurs in the black serie. The markings and striations are reduced to a minimum but are still perceptible in the reduced and dispersed melanin areas lying between the striations. This creates an all in all pearl-grey colour, except the tips of the flight feathers (wings and tail) which have normal dark melanin appearance.
2. A great difference by far from all known melanin mutations and thus a unique feature is the distinctive phenotype of the mutation Nero Perla. The nestlings have blue eyes, but darken with age. This mean as adult the eyes appear dark.
3. The oxidation of beak and legs are clearly black.
4. The underflue appears grey.
5. A further feature is melanin colouration around the beak, like a mask, yet not determined by sexual dimorphism, such as in mosaic canaries.
6. In newborn nestlings occurs a depigmentation, making them similar to lipochrome canaries with a white birth plumage and skin. Currently (2018) the mutation is not yet recognized from the Confederation Ornithologique Mondiale (C. O. M.)
Because of the autosomal recessive inheritance, the following results are to be expected in the following mating:
1. pearl x pearl = all pearl
2. pearl x non-pearl = all non-pearl
3. pearl x non-pearl/split for pearl (male or female) = pearl and non-pearl/split for pearl (male or female)
4. non-pearl/split for pearl (male or female) x non-pearl/split for pearl (male or female) = pearl and non-pearl
Currently it is known that there are no intermediates between the Pearl Type 1 and Typ 2. So, the Pearl Type 1 can reproduce a Pearl Type 2. But about the whole inheritance of the Nero Perla mutation further facts and experience must be collected, especially about new the Pearl Type 2. Also the transfer of the mutation is in progress and maybe already in the next breeding season we will see four classic pearl types. As a matter of fact, there is a lot of excitement present and we waiting further reports about the new canary mutation “Nero Perla”.
(Author of this article : Werner Krueger)
See also earlier on this blog : Nero Perla > Scoperta di una nuova stella ? Realizzazione : Carlo Maria Nobili.
bertarini, Posted on Thursday, 25 April 2019 at 4:41 PM
in the diagram there is an error:
2. pearl x non-pearl = all non-pearl is not accurate.
2. pearl x non-pearl = all non-pearl / split for pearl (male or female) is the exact result as I wrote in the link I enclose:
https://bertarini.skyrock.com/2.html