Tsudzuki M
Department of Laboratory Animal Science, Agriculture, University of Osaka Prefecture, Japan.
J Hered. 1995 Jan-Feb;86(1):66-8. doi: 10.1093/oxfordjournals.jhered.a111530.
The stumpy-limb (SL) mutant (sl/sl) of Japanese quail (Coturnix japonica) is characterized by brachycephaly, parrot-like beaks with mild expressivity, and short and thick limbs. Although this mutant had been believed to be completely embryonic lethal just before hatching, this study revealed that the SL mutant was partly viable when genetic background was altered. A total of 132 of 237 SL embryos (56%) hatched from the eggshell with no assistance; subsequently, 36 of the 132 SL chicks that hatched survived to adulthood. Among these 36 birds, 12 males and four females developed sexually, and of these, six males and four females produced offspring. Mating experiments with the fertile SL mutants and controls confirmed that this mutation is controlled by an autosomal recessive gene. In micromelic or chondrodystrophic mutations of poultry, the SL mutation is an extremely rare instance in which some individuals of both sexes reach sexual maturity and are actually fertile.
日本鹌鹑（Coturnix japonica）的短肢（SL）突变体（sl/sl）具有短头畸形、具有轻度表现度的鹦鹉样喙以及短而粗的肢体的特征。尽管此前一直认为这种突变体在孵化前完全胚胎致死，但本研究表明，当遗传背景改变时，SL突变体部分可以存活。237个SL胚胎中有132个（56%）在没有帮助的情况下从蛋壳中孵化出来；随后，孵化出的132只SL雏鸡中有36只存活至成年。在这36只鸟中，12只雄性和4只雌性发育到性成熟，其中6只雄性和4只雌性产生了后代。对可育的SL突变体和对照进行的交配实验证实，这种突变由常染色体隐性基因控制。在家禽的短肢或软骨发育不良突变中，SL突变是一个极其罕见的例子，即两性中的一些个体达到性成熟并实际具有生育能力。
