Tsudzuki M
Department of Laboratory Animal Science, College of Agriculture, University of Osaka Prefecture, Japan.
J Hered. 1995 Jul-Aug;86(4):305-7. doi: 10.1093/oxfordjournals.jhered.a111588.
A new plumage color mutation of Japanese quail (Coturnix japonica) was named "light down lethal" based on its light coloration of neonatal plumage and almost total mortality by 3 weeks of age. Prehatch mortality of the light down lethal was also higher (36.8%) than the wild type (8.2%). The majority of the light down lethal chicks that hatched died within 1 week of age. Among the 103 light down lethal chicks that hatched, only two males survived to adulthood and reproduced normally. Their adult mutant plumage was very similar to that of the wild type. The mutant down showed the same striped pattern on the dorsal surface as the wild-type chick, but the color of the stripes was lighter than the wild type. Genetic analysis revealed that the mutant phenotype is controlled by an autosomal recessive gene. The proposed gene symbol is ldl.
日本鹌鹑（Coturnix japonica）出现了一种新的羽毛颜色突变，因其新生羽毛颜色浅且在3周龄时几乎全部死亡，被命名为“淡羽致死”。淡羽致死型的孵化前死亡率（36.8%）也高于野生型（8.2%）。大多数孵化出的淡羽致死型雏鸡在1周龄内死亡。在孵化出的103只淡羽致死型雏鸡中，只有两只雄性存活至成年并正常繁殖。它们成年后的突变羽毛与野生型非常相似。突变型雏羽在背表面呈现出与野生型雏鸡相同的条纹图案，但条纹颜色比野生型浅。遗传分析表明，突变表型由一个常染色体隐性基因控制。提议的基因符号为ldl。
