Animalia > Chordata > Amphibia > Caudata > Ambystomatidae > Ambystoma > Ambystoma dumerilii

Ambystoma dumerilii (Lake Patzcuaro salamander)

Wikipedia Abstract

The Lake Patzcuaro salamander, locally known as achoque, Ambystoma dumerilii, is a neotenic salamander species. This salamander is found in Lago de Pátzcuaro, a high altitude lake in the Mexican state of Michoacán. This is located in the Mesa Central region of the country, home to many isolated Ambystoma species. There have been claims that a subspecies is found further inland to the north-east in San Juan del Río, Querétaro, but this is doubtful due to the animals wholly aquatic nature. Dumerilii retain their larval characters throughout their entire life. This results in adults that have long, heavily filamented external gills, gill slits lined with tooth-like gill rakers, and caudal fins. Patzcuaro salamanders are usually yellowish in color, with a lighter shade on their underbellies. T
View Wikipedia Record: Ambystoma dumerilii

Endangered Species

Status: Critically Endangered
View IUCN Record: Ambystoma dumerilii

EDGE Analysis

The Lake Pátzcuaro salamander exhibits some highly unusual and distinct features, indicative of its evolutionary distinctiveness, including its rare “neotenous” life history, whereby the species never develops into an adult but instead retains its juvenile characteristics throughout life, essentially achieving reproductive maturity whilst still in its undeveloped larval form. The salamanders are harvested both for human consumption and for medicinal purposes as they are thought to be effective in addressing respiratory problems. Known only from Lake Pátzcuaro (or Lago de Pátzcuaro) in north-western Michoacan, Mexico, it is crucial that this habitat is conserved to secure the future survival of the species.
Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 42.62
EDGE Score: 6.55
View EDGE Record: Ambystoma dumerilii


Adult Length [1]  11 inches (28.2 cm)
Litters / Year [1]  1


Name Countries Ecozone Biome Species Report Climate Land
Trans-Mexican Volcanic Belt pine-oak forests Mexico Neotropic Tropical and Subtropical Coniferous Forests

Alliance for Zero Extinction (AZE) Sites

Name  Location   Map   Climate   Land Use 
Lago Pátzcuaro Mexico

Biodiversity Hotspots

Name Location Endemic Species Website
Madrean Pine-Oak Woodlands Mexico, United States Yes


Parasitized by 
Falcaustra chabaudi <Unverified Name>[2]
Polymorphus brevis[2]
Schyzocotyle acheilognathi[2]
Spiroxys contorta <Unverified Name>[2]

Range Map


Middle America;

External References



Attributes / relations provided by
1Oliveira, Brunno Freire; São-Pedro, Vinícius Avelar; Santos-Barrera, Georgina; Penone, Caterina; C. Costa, Gabriel. (2017) AmphiBIO, a global database for amphibian ecological traits. Sci. Data.
2Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
AZE sites provided by Alliance for Zero Extinction (2010). 2010 AZE Update.
Abstract provided by DBpedia licensed under a Creative Commons License