Partial Albinism in Distal Part of Limbs Observed in Takasakiyama Japanese Monkey

概要

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Japanese monkeys with "white hands" were frequently noticed in several regions including Takasakiyama. The results of 11 years (from 1977 to 1987) observation about "white hands "in three troops (A, B and C) of Takasakiyama are characterized as below.1) White areas were dominantly found in forelimbs and the size of the white areas varied among monkeys from a tiny point to whole limb pads of two or three limbs. The difference between left and right was not remarkable.2) The frequency of white hands were significantly lower in the A troop (.0291) than in the other two troops (.0667 and .0581).3) The annual fluctuation in the occurrence rate of the white hand was significant.4) Familial accumulation was observed at the B troops in sibs. of white hands and at the A troop in offspring from white hand mothers.5) The phenotypic relationships were not highly correlated between mothers and offspring. The occurrence of white handed offsprings was not affected by the phenotypes of mothers.6) The causes for limb malformation and white hand are clearly different from each other.These results suggested the white hand is inherited character. Segregation ratios fit autosomal reccesive (possibly with incomplete penetrance) and polygenic inheritance hypotheses. No father, however, could be identified in this study, so the possibility that the white hand is controlled genetically should be tested by using offspring with identified father.
日本霊長類学会の論文