Scientific name: Kinosternon flavescens
Taxonomy
- Kingdom: Animalia
- Phylum: Chordata
- Class: Reptilia
- Order: Testudines
- Family: Kinosternidae
- Genus: Kinosternon
- Species: K. flavescens
Description
The yellow mud turtle is a small, semi-aquatic turtle typically measuring 8–13 cm (3.1–5.1 in) in carapace length. The carapace is generally oval, low‑domed, and exhibits a dorsal coloration ranging from yellowish‑brown to olive, often with darker mottling. The plastron is generally yellowish and may display faint dark blotches. The species name “flavescens” refers to its yellowish hue. Sexual dimorphism is mild; females are slightly larger than males. The head and limbs are proportionally large, and the turtle possesses a hinged plastron characteristic of the family Kinosternidae.
Distribution and Habitat
Kinosternon flavescens is native to the central United States, with a range extending from southern Nebraska and western Iowa eastward through Kansas, Missouri, Oklahoma, Texas, and into northern New Mexico and parts of Arkansas and Louisiana. The species inhabits shallow, slow‑moving freshwater bodies such as temporary ponds, marshes, roadside ditches, and oxbow lakes. It prefers habitats with soft, muddy substrates where it can forage and burrow.
Behavior and Ecology
The yellow mud turtle is primarily nocturnal, emerging at night to forage. It is an opportunistic omnivore; its diet consists of aquatic invertebrates (e.g., insects, mollusks, annelids), small fish, carrion, and plant material such as algae and detritus. The species is known for its ability to tolerate temporary water bodies, often estivating (aestivating) in moist burrows during dry periods.
Reproduction
Breeding occurs in the spring, with females laying clutches of 2–6 eggs in sandy or loamy nests excavated near the water’s edge. Incubation periods range from 70 to 120 days, depending on temperature. Hatchlings emerge in late summer and are independent shortly after emergence.
Conservation Status
The International Union for Conservation of Nature (IUCN) currently classifies Kinosternon flavescens as “Least Concern” due to its relatively wide distribution and presumed large population. Nevertheless, local populations may be impacted by habitat loss, wetland drainage, and water pollution. Conservation measures focus on preserving wetland habitats and maintaining water quality.
References
- Ernst, C. H., & Barbour, R. W. (1989). Turtles of the United States and Canada. Smithsonian Institution Press.
- IUCN Red List of Threatened Species. Kinosternon flavescens assessment.
- Petranka, J. W., & Bickford, P. (2005). “Ecology and life history of the yellow mud turtle (Kinosternon flavescens)”. Herpetological Review, 36(4), 465‑470.