|
The white-ankled mouse (''Peromyscus pectoralis'') is a species of rodent in the family Cricetidae. It is found in Mexico and in New Mexico, Oklahoma and Texas in the United States.〔 The white-ankled mouse is commonly found in coexistence with the Brush mouse and Texas mouse (''P. botlii'' and ''P. attaweri''). Often, the sympatric overlap in characteristics between these species makes it difficult to identify a specific species. The most distinguishing feature of the white-ankled mouse, and the one most used to identify the species, is the baculum of males (Hooper 1958). The tip of the white-ankled mouse’s baculum is long and cartilaginous, whereas the tip of the Brush and Texas mouse is short and rounded (Clark 1952 and Hooper 1958). ==Description== The white-ankled Mice have three distinct pelages in their life cycles: juvenile, subadult, and adult. Two molt phases (post-juvenile and post-subadult) are necessary for the distinct pelages in each phase of their lives (Hoffmeister 1951). In Texas, the white-ankled mouse differs from the Texas mouse by having shorter hind feet, white ankles, paler color, and a more defined bicolor tail. The white-ankled mouse differs from the Brush mouse by having smaller molar teeth, white ankles, and shorter hair on the end of the tail (Clark 1953 and Hooper 1958). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「White-ankled mouse」の詳細全文を読む スポンサード リンク
|