The Ryukyu spiny rat (Tokudaia osimensis) is a species of rodent in the family Muridae. [2] Endemic to Amami Ōshima island in the Amami Islands of the Ryukyu archipelago of Japan , …

2017年5月12日 · Found only in the subtropical forests of an island in Japan called Amami Oshima, Amami spiny rats are threatened by habitat destruction, competition with black rats …

2022年11月28日 · The Amami spiny rat (Tokudaia osimensis), found on the Japanese island of Amami Ōshima, is one of just a handful of mammals that lack Y chromosomes. What’s more, …

Amami Spiny Rat (Tokudaia osimensis) Lives only on Amami Oshima. Almost entirely covered with 2 cm-long spiny hair, the rodent propels itself by jumping using both front and hind legs …

Our studies of the Amami spiny rat, with XO males and females and lacking a Y chromosome and Sry, have at last identified a tiny male-specific change in sequences that regulate Sox9. We …

2022年12月6日 · We here report our discovery of a male-specific duplication of an enhancer of Sox9 in the Amami spiny rat Tokudaia osimensis, in which males and females have only a …

2024年8月28日 · The study of the Amami spiny rat has opened new avenues for understanding the evolution of sex chromosomes and the mechanisms of sex determination in mammals. By …

2022年11月28日 · In the Amami spiny rat, the the Sry gene is completely absent; thus, it has evolved a novel, unknown sex-determining mechanism independent of Sry. The research …

2022年11月28日 · In the Amami spiny rat, the the Sry gene is completely absent; thus, it has evolved a novel, unknown sex-determining mechanism independent of Sry. The research …

The Ryukyu spiny rat (Tokudaia osimensis) is a species of rodent in the family Muridae. Endemic to Amami Ōshima island in the Amami Islands of the Ryukyu archipelago of Japan, its natural …