CR

Fat-whorled Pondsnail

Stagnicola bonnevillensis

Declining

Overview

Ladislavella bonnevillensis is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails.

Stagnicola bonnevillensis faces severe threats from habitat degradation and water level fluctuations in its extremely limited range within the Great Salt Lake basin. Agricultural diversions, municipal water extraction, and drought conditions have dramatically reduced available freshwater habitats. The species' restriction to a few isolated spring systems makes it exceptionally vulnerable to localized disturbances and water quality changes.

Threat summary

Habitat

This freshwater snail inhabits springs, seeps, and associated wetlands in the Bonneville Basin of Utah and adjacent areas. It requires clean, cool freshwater environments with stable water levels and abundant aquatic vegetation.

Artificial - Aquatic & marine· major

Conservation measures underway

Species recoveryLegislation

Other threatened species in LYMNAEIDAE

EN

Shortspire Pondsnail

Stagnicola idahoensis

Unknown
EN

Shortface Lanx

Fisherola nuttalli

Declining
VU

Newcomb's Bugle

Erinna newcombi

Declining
CR

Thickshell Pondsnail

Stagnicola utahensis

Unknown

Frequently asked questions

Why is Fat-whorled Pondsnail classified as Critically Endangered?
Fat-whorled Pondsnail is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Stagnicola bonnevillensis faces severe threats from habitat degradation and water level fluctuations in its extremely limited range within the Great Salt Lake basin. Agricultural diversions, municipal water extraction, and drought conditions have dramatically reduced available freshwater habitats. The species' restriction to a few isolated spring systems makes it exceptionally vulnerable to localized disturbances and water quality changes.
Where does Fat-whorled Pondsnail live?
Fat-whorled Pondsnail occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Fat-whorled Pondsnail?
The main threats to Fat-whorled Pondsnail are 1.1, 12.1, 2.3, and 4.1. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.