Llano Pocket Gopher (Geomys texensis) lives in open grasslands across South Central United States. It feeds on grass and roots. Its conservation status is Least Concern.
Fascinating facts about the Llano Pocket Gopher
- The central Texas pocket gopher lives only in central Texas, preferring loamy soils that are easy to excavate. It is a solitary animal that builds extensive tunnel networks, each system being spaced at least 2 m from the next. Within each burrow there are several chambers used for resting, food storage and latrines. Vertical corkscrew tunnels are incorporated to make it harder for predators to reach the gopher.
- A single chewing louse, Geomydoecus heaneyi, has been recorded living exclusively on the fur of this gopher, meaning the parasite's survival is tied to the host's distribution. The pocket gopher is endemic to central Texas, so the louse is likewise confined to that region. Because the gopher is solitary and spends most of its life underground, the louse is rarely found on any other animal.
- Although northern and southern subspecies look alike, their chromosomes differ: northern forms possess a diploid number of 70 to 72, while southern individuals may have 70, 71, 72 or 74 chromosomes. This genetic variation is evident despite the lack of obvious cranial differences between the subspecies. Scientists note that such chromosomal divergence occurs without accompanying morphological change, highlighting the importance of genetic tools for identification.
- The three subspecies of central Texas pocket gopher occupy adjacent but non-overlapping ranges. The northern forms, G. texensis and G. llanesis, are parapatric, meaning their territories meet edge-to-edge without intermixing, while the third subspecies, G. bakeri, is geographically isolated in the southern counties.
- Males of the central Texas pocket gopher are noticeably larger than females, averaging 18 cm in total length compared with 15 cm for females. Both sexes share a short tail measuring about 6 to 7 cm, and their fur is brownish over most of the body with a paler yellowish collar around the throat and white underparts and feet. The winter coat darkens relative to the summer coat, sometimes giving the underparts a pale grey hue.
Sources
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At a glance
RangeSouth Central United States
HabitatOpen grasslands
DietGrass and roots
About the Llano Pocket Gopher
In the sun-baked expanses of the Llano Estacado, a secretive and industrious creature stirs beneath the surface, its paws deftly excavating an intricate network of tunnels and burrows. The Llano Pocket Gopher, with its sturdy body and powerful claws, moves through the earth with a quiet purpose, its blind eyes attuned to the subtle vibrations of its subterranean world. As it digs, it crafts a hidden realm of dark, damp passageways, a remarkable testament to its patient and unyielding nature.
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