物种 / 龟鳖目
斯氏动胸龟
Kinosternon (Thyrosternum) stejnegeri
The Arizona Mud Turtle, found in the southwestern United States and northwestern Mexico. Previously considered a subspecies of Kinosternon flavescens or a distinct species.
分类路径：龟鳖目 (TESTUDINES) > 隐颈龟亚目 (CRYPTODIRA) > 硬壳龟下目 (DUROCRYPTODIRA) > 鳄龟总科 (CHELYDROIDEA) > 动胸龟科 (KINOSTERNIDAE) > 动胸龟亚科 (KINOSTERNINAE) > 动胸龟属 (Kinosternon) > 盾胸龟亚属 (Kinosternon (Thyrosternum)) > 斯氏动胸龟 (Kinosternon (Thyrosternum) stejnegeri)。顺这个路径能知道它在龟鳖目里属于哪个科、哪个属，方便和相近物种做对比。
- 中文名
- 斯氏动胸龟
- 英文名
- Arizona Mud Turtle
- 拉丁学名
- Kinosternon (Thyrosternum) stejnegeri
- 分类等级
- 物种
图鉴导读
Kinosternon stejnegeri
Trivia
Named after Leonhard Stejneger, a Norwegian-American herpetologist. Type locality is near Sells, Pima County, Arizona. Some populations may be translocated.
Overview
The Arizona Mud Turtle, found in the southwestern United States and northwestern Mexico. Previously considered a subspecies of Kinosternon flavescens or a distinct species.
Scientific Name
Kinosternon stejnegeri
Ecological Habits
Inhabits permanent and seasonal water bodies in arid regions, including streams, cattle tanks, and reservoirs. Omnivorous, feeding on aquatic invertebrates, tadpoles, and plant matter.
Major Threats & Conservation
Habitat destruction due to groundwater extraction, drought, and urbanization; also road mortality and predation by introduced species. Classified as Near Threatened, with monitoring and habitat protection needed.
Morphological Characteristics
Moderate size, with max SCL of 18.1 cm in males and 16.7 cm in females. Carapace with three keels in juveniles, becoming smooth in adults. Plastron hinged, yellow with dark seams.
Natural Distribution & Conservation Status
Distribution: Mexico (Sonora), USA (Arizona). Estimated AOO: 36,175 sq km, EOO: 69,238 sq km. IUCN Red List: Near Threatened (NT) (2025). CITES: Appendix II.
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