“Non sex-linked lutino”
Mutation: NSL ino
Inheritance: Autosomal recessive
Pigment change: Albinism
NOT MET IN FINLAND!
Every breeder is familiar with the one of the most common colors, the lutino, that is produced by the sex-linked ino gene. Quite rare, however, have heard about a recessive version that actually might even be older than the lutino we know. This mysterious and rare color is called Non Sex-linked Lutino, or shortly, NSL Lutino. NSL lutino is very similar to the sex-linked lutino and the main difference is the way the colors are inherited. The mutation behind the NSL lutino is the NSL ino, and the research has proven it to have intermediate relationship with the Bronze Fallow. This means that combining a bronze fallow and NSL ino produces a half NSL ino, half fallow. This means that they are each others alleles.
It is thought to be fouund in Europe, in Netherlands, but it is very hard to find information of this color. A website from Netherlands mentions that the last dutch breeder moved to Belgium. (http://www.australischeparkieten.n, visited 9. August 2009)
The sex-linked lutino has a very stick status among the cockatiel hobbyists and for that I doubt that the NSL lutino will ever recieve great popularity. But this color offers great opportunity for those who want to research the cockatiel genetics so it would be very important to keep the color alive.
Gene behind the color: NSL ino
NSL ino is commonly met in parrot species. It’s located in A loci and causes appearance reminding of the more known sex-linked lutino – but NSL ino is recessive. You can sometimes hear the term recessive ino meaning the same thing. NSL ino is a so called tyrosinase negative albino: it’s caused by the lack of the tyrosinase enzyme. In many species, weakness and breeding difficulties are attached to NSL ino and this is how it seems to be also in cockatiels.