Trachemys gaigeae

Mon, 01 Jan 0001 00:00:00 +0000

Scientific name. Trachemys gaigeae

Common Name. Mexican Plateau Slider

General information. Little is known about the natural history of this species. Likely a basking turtle maintaining a vegetarian diet.

Protected status. The Mexican Plateau Slider is not a protected species in Texas and can be legally collected with a hunting license.

Diagnostic features. Weakly keeled, oval carapace with slightly serrated posterior Unhinged plastron. Upper jaw medially notched. Webbed feet. Males without elongated toenails on forelimbs.

Coloration. Carapace olive-brown with intricate pattern of orange lines on the pleural and vertebral scutes Plastron white, orange, or light green. Center of plastron with dark pigment formed by lines along transverse seams. Skin is light green or brown. Forelegs with yellow stripes; rear legs with vertical stripes. Oval orange (or red) spot bordered by black behind eye, not touching orbit. Lateral stripes on neck broken into small spots or ovals. Chin with medial stripe.

General distribution. In North America, Trachemys gaigeae is found only in the Rio Grande river from southern New Mexico to the Big Bend of Texas.

Texas distribution. In Texas, Trachemys gaigeae , is restricted to the Rio Grande in the vicinity of Big Bend (along the Presidio, Brewster, and Terrell county borders), as well as that portion of the river near the Hudspeth/Culberson/Presidio county lines and northern El Paso County.

Habitat. The Mexican Plateau Slider is found in pools and slow-moving portions of the Rio Grande River. May also be found in cattle tanks adjacent to the Rio Grande.

Reproduction. Little is known about reproduction in this species. Likely clutch sizes of 6-11 eggs.

Size. Adult Trachemys gaigeae reach carapace lengths of 12.5-20 cm (5-8 in).

Map. Orange counties indicate new county records since previous Herps of Texas update in 1998; all other colored counties reflect known distribution prior to 1998 for species and/or subspecies. Map is based on museum voucher specimens.

Trachemys scripta

Mon, 01 Jan 0001 00:00:00 +0000

Scientific name. Trachemys scripta

Common Name. Pond Slider

General information. The Pond Slider, or Red-eared Slider, is a basking turtle common across most the state. This species frequently moves between bodies of water after large rains. Some can be found over a mile from the nearest body of water. Omnivorous, pond sliders eat everything from vegetation, to arthropods, mollusks, and small vertebrates.

Protected status. The Pond Slider is not a protected species in Texas and can be legally collected with a hunting license.

Diagnostic features. Carapace oval and weakly keeled with slight posterior serrations Unhinged plastron. Upper jaw medially notched. Webbed feet. Males without elongated toenails on forelimbs.

Coloration. Carapace olive-brown with varying pattern of yellow and orange lines on the pleural and vertebral scutes; pattern can be reticulate or simple, with stripes and bars to ocelli Plastron yellow that may have a single blotch on each anterior scute. Skin is light green or brown. Conspicuous head and neck markings; wide red postorbital oval blotch bordered by black pigment contacting rear of eye. Yellow arrow on top of head formed by stripe across snout and supratemporal stripes. Limbs with narrow yellow stripes. Narrow chin stripes; medial stripe forming V shape on neck. Males become melanistic with age.

General distribution. In North America, Trachemys scripta is found across most the eastern half of the United States, save New England and the Florida peninsula.

Texas distribution. The single subspecies in Texas, Trachemys s. elegans, is native across most the eastern three-quarters of the state.

Habitat. The Pond Slider is most at home in lakes, ponds, or slow-moving rivers with lots of available basking sites and aquatic vegetation.

Reproduction. Nesting occurs between April and July. Females lay 2-23 eggs per clutch and may lay as many as five clutches per year. Incubation is 60-80 days.

Size. Trachemys scripta reach average carapace lengths of 20 cm (8 in) in males and 28 cm (11 in) in females.

Sliders | Herps of Texas

Trachemys gaigeae

Trachemys scripta