Ambystoma lermaense

The Lake Lerma salamander, scientifically known as Ambystoma lermaense, is an exceedingly rare species of mole salamander found in Mexico. It is characterized by its occasional neoteny, meaning it can retain larval features into adulthood. This species historically inhabited the Lerma River and the now largely destroyed Lake Lerma wetlands in the Toluca Valley, at high altitudes of 2800–3000 meters above sea level.

Conservation Concerns

The existence of Ambystoma lermaense is critically threatened by extensive habitat degradation. The drainage of the Lake Lerma wetlands complex has decimated its primary habitat. Further pressures include pollution of the Lerma River and the impacts of dam construction in regions like Almoloya. These factors, combined with domestic consumption, have led to a catastrophic decline in its populations. Consequently, the species is listed as Endangered on the IUCN Red List, with a significant portion of its vulnerability attributed to a lack of detailed information regarding its current distribution and numbers. It is also included in Appendix II of CITES, regulating its international trade.

Reproduction and Research

Despite its precarious status, research has demonstrated the potential for conservation through ex-situ reproduction. Studies have shown that Ambystoma lermaense can be bred under laboratory conditions. This captive breeding is often achieved through hormonal stimulation, such as the use of Human Chorionic Gonadotropin (hCG), offering a glimmer of hope for the species' survival.