Atelopus sonsonensis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Atelopus sonsonensis
Species Authority: Vélez-Rodríguez & Ruíz-Carranza, 1997

Assessment Information [top]

Red List Category & Criteria: Critically Endangered A3ce ver 3.1
Year Published: 2010
Date Assessed: 2008-11-07
Assessor(s): Wilmar Bolívar, Fernando Castro
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because of a projected population decline, estimated to be more than 80% over the next ten years, inferred from declines in other high altitude Atelopus species in the same region, probably due to chytridiomycosis.
2004 Critically Endangered

Geographic Range [top]

Range Description: This species is known only from the type locality: Mesopotamia, near Páramo de Sonsón, in the municipality of Sonsón, Vereda Caunzal, on the eastern side of the Cordillera Central, about 15km to the east of the municipality of Argelia, in Colombia. It was recorded at 1,500m asl, and might occur more widely.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population status is unknown. This is a relatively newly described species which had not been recorded since its discovery in 1996, until its recent (2008) rediscovery (Fundación ProAves 2008).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: It occurs on the ground in the under-storey of forest along streams; it has not been recorded from disturbed habitats. Breeding and larval development take place in streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): The major threat is likely to be chytridiomycosis, a factor implicated in catastrophic population declines in many montane species of Atelopus. Habitat loss due to smallholder farming activities and the planting of illegal crops, and water pollution from agriculture, are major threats to the species.

Conservation Actions [top]

Conservation Actions: This species is not known from any protected areas. Research into the species' population status is currently underway (Fundación ProAves 2008). In view of the threat of chytridiomycosis, ex-situ populations might need to be established.

Citation: Wilmar Bolívar, Fernando Castro 2010. Atelopus sonsonensis. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 01 April 2015.
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