Animalia > Chordata > Amphibia > Caudata > Ambystomatidae > Ambystoma > Ambystoma andersoni

Ambystoma andersoni (Anderson's salamander)

Language: Spanish

Wikipedia Abstract

Anderson's Salamander (Ambystoma andersoni) is a neotenic salamander from Laguna de Zacapú in the Mexican state of Michoacán. This salamander is a relatively recent discovery, first described by Branden and Krebs in 1984. Ambystoma andersoni is named after James Anderson, a herpetologist with the American Museum of Natural History, who did extensive fieldwork studying Ambystoma and other amphibians and reptiles in Mexico.
View Wikipedia Record: Ambystoma andersoni

Endangered Species

Status: Critically Endangered
View IUCN Record: Ambystoma andersoni

EDGE Analysis

Anderson’s 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. This would be akin to a tadpole being able to breed without ever turning into a frog. The species is totally aquatic, spending its whole life in the same body of water (Lake Zacapu). This lake is currently suffering from pollution which poses a major threat to the 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 andersoni


Adult Length [1]  8 inches (21.4 cm)
Litters / Year [1]  1
Female Maturity [1]  1 year
Male Maturity [1]  1 year


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 Zacapu Mexico

Biodiversity Hotspots

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

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
North of England Zoological Society
Paignton Zoo Environmental Park
Reaseheath College Animal Centre
The Philadelphia Zoo

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.
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