Search Wildlife
≡
Southern bonneville springsnail
Pyrgulopsis transversa
NatureServe conservation status
Global (G-rank): G2
State (S-rank): S1
External links
Species range
This species is known from six springs, all being in north-central Utah. Four of these localities are in Tooele County, and there is one locality each in Utah County and in Sanpete County.
Habitat
Hershler (1998) wrote: "The type locality is a series of small, mineralized (1126 micromhos/cm) springs at about 1778 m elevation. The spring sampled is a small 'rheocrene' issuing out of a pipe ...." Hershler (n.d.) reported habitat information for five of the six known localities for this species, one of these five being the type locality already mentioned. He designated four of the springs rheocrenes and one a heliocrene. He gave their elevations as 5,830, 5,860, 6,380, 6,500, and 6,740 ft. Their temperatures were 12, 12, 12, 13, and 16 C, and their conductivities were 360, 463, 500, 889, and 1,126 micromhos/cm.
Threats or limiting factors
Of the six known localities for this species (Hershler 1998), Hershler (n.d.) has provided information concerning the condition and threats at five: Four of these sites are moderately disturbed, and one is highly disturbed. At three of the springs, livestock were present; there was also a residence near one of these springs. One of the springs had been dug out, and another possibly so, and both of these springs flow into reservoirs or an impoundments. Trampling by livestock and alteration of the springs are, then, known threats to the species.
