title: Hybrid dysgenesis in natural populations of Drosophila melanogaster in Japan. III. The P-M system in and around Japan.
abstract: The P-M system of hybrid dysgenesis in Drosophila melanogaster was investigated on the basis of gonadal dysgenesis, using 1,590 strains from 28 natural populations in Japan, and 20 populations from Southeast Asia, the Pacific area and Africa. Strong P strains were found sporadically in several populations in Japan. Few strong M strains were observed. Q strains were present at a high frequency in most populations. Thus, most populations in these areas were regarded as Q populations. The distribution of the P element and the evolution of P, Q and M populations are also discussed.
authors.affiliation: Department of Biology, Ochanomizu University, Tokyo, Japan.
authors.forename: E T
authors.initials: ET
authors.lastname: Matsuura
authors.forename: S
authors.initials: S
authors.lastname: Takada
authors.forename: H
authors.initials: H
authors.lastname: Kato
authors.forename: S
authors.initials: S
authors.lastname: Niizeki
authors.forename: S I
authors.initials: SI
authors.lastname: Chigusa
mesh_terms: D000818:Animals; D004251:DNA Transposable Elements; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D005298:Fertility / Q000235:genetics; D005828:Genetics, Population; D006824:Hybridization, Genetic / Q000235:genetics; D007564:Japan; D008297:Male; D013045:Species Specificity
chemical_list: D004251:DNA Transposable Elements