岡山産ヤサイゾウムシの染色体

概要

論文の詳細を見る
The chromosomes of Listroderes costirostris SCHONHERR obtained from Kurashiki City, Okayama Prefecture, Japan, were studied in both oogonial cells and in oocytes in maturation division in squash slides and sectioned slides, respectively. Oogonial chromosome number varied between 28 and 41 in 1967, and between 27 and 30 and between 28 and 31 in 1968. The most common number encountered was 30. Three metaphase plates of single equational maturation division showed 28, 29 and 30 unpaired chromosomes. An oocyte metaphase plate was tripattite and "a rudimentary reduction division" was often observed. It was, therefore, concluded that L. costirostris was a parthenogenetic polyploid in Kurashiki City. A karyotype analysis revealed a probable base number of ten and hence strongly suggested triploidy.
社団法人日本動物学会の論文
1970-03-15