Ken Nozawa

Population genetics of Japanese monkeys: II. Blood protein polymorphisms and population structure

Genetic variability in individual troops of the Japanese macaque (Macaca fuscata fuscata) was quantified by the proportion of polymorphic loci and the average heterozygosity per individual from the results of starch-gel electrophoreses of blood proteins controlled by 32 independent genetic loci. The former averaged 9.2% and the latter 1.3%, the values being remarkably lower than those estimated for other animal populations. Geographical distribution of the genetic variations was not uniform in the whole species but the variants occurred only in limited areas. Assuming the selective neutrality of segregating alleles and the two-dimensional stepping-stone model of population structure, the genetic migration rate between the local demes per generation could be estimated to average less than inverse of average effective deme size. Here, the local deme is not a troop itself, but it consists of several troops tightly connected with each other by frequent exchanges of reproductive males. Analyses of correlation between geographic and genetic distances between troops revealed that the gene constitutions of two troops apart more than 100 km on an island could be regarded as practically independent of each other. These results suggest that the population structure of the Japanese macaque species has a tendency to split into a number of local subpopulations in which the effect of random genetic drift is prevailing.

Genetic diversity of longtail macaques (Macaca fascicularis) on the island of Mauritius: an assessment of nuclear and mitochondrial DNA polymorphisms

Background  Individuals from an introduced population of longtail macaques on Mauritius have been extensively used in recent research. This population has low MHC gene diversity, and is thus regarded as a valuable resource for research.

Population genetics of Japanese monkeys: III. Ancestry and differentiation of local populations

AbstractGenetic variability in local populations of the Japanese macaque (Macaca fuscata) was quantified by the proportion of polymorphic loci (Ppoly) and the average heterozygosity per individual (

Population genetics of Japanese monkeys: I. Estimation of the effective troop size.

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BLOOD PROTEIN POLYMORPHISMS AND POPULATION STRUCTURE OF THE JAPANESE MACAQUE, MACACA FUSCATA FUSCATA

) from the starch- and polyacrylamide-gel electrophoreses of blood proteins controlled by 32 independent genetic loci. Ppoly averaged 13.6% and

Average coefficient of relationship within troops of the Japanese monkey and other primate species with reference to the possibility of group selection

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