Atelopus chocoensis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Bufonidae

Scientific Name: Atelopus chocoensis Lötters, 1992
Taxonomic Source(s): Frost, D.R. 2016. Amphibian Species of the World: an Online Reference. Version 6.0 (31 March 2016). New York, USA. Available at:

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) D ver 3.1
Year Published: 2017
Date Assessed: 2016-08-01
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Luedtke, J.
Contributor(s): Gómez, D., Castro, F., Vargas-Salinas, F., Gonzalez Duran, G.A., Rueda-Almonacid, J.V., Bernal, M.H., Gutierrez, P., Lötters, S. & Bolívar, W.
Facilitator/Compiler(s): Hobin, L., NatureServe, N.
Listed as Critically Endangered (Possibly Extinct) as it has not been recorded since 1998 and subsequent surveys have not found the species. While there is no direct information available, it is suspected that Batrachochytrium dendrobatidis has caused the declines observed in this species and that the number of mature individuals might be fewer than 50.
Date last seen: 1998
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from north of Department of Valle del Cauca (Serranía de los Paraguas) to southeastern of Department of Choco (Cerro Torrá), Colombia, between 1,900–2,250 m asl. Its extent of occurrence (EOO) is 262 km2.
Countries occurrence:
Additional data:
Lower elevation limit (metres):1900
Upper elevation limit (metres):2250
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is known from fewer than 10 specimens. The species was last collected in 1998, and the area has been recently surveyed since then on several occasions with no success in finding it (W. Bolívar pers. comm. 2016). Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:0-49
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is a terrestrial species that occurs in montane forest on the forest floor and near the forest edge. It has not been recorded from anthropogenically disturbed habitats. Although there is limited ecological information, it is expected to be egg-laying and breed in streams by larval development, as with other congeners.
Systems:Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes
Movement patterns:Not a Migrant

Use and Trade [top]

Use and Trade: There are no records of this species being utilized.

Threats [top]

Major Threat(s): Habitat destruction and degradation due to cattle grazing, agriculture activities and logging in the north of its distribution an illegal mining activities in the western part are considered major threats. The 2004 assessment reported that chytridiomycosis was probably the major threat, leading to a catastrophic population decline. While there is currently no direct information confirming that chytrid has caused declines in this species, the lack of records since 1998 is consistent with the pattern of decline in many other montane Atelopus species, and it is therefore reasonable to infer that the disease might be the cause of declines in this species (Colombia Red List Assessment Workshop August 2016).

Conservation Actions [top]

Conservation Actions: Conservation ActionsThe range of the species includes Tatamá National Park and Reserva Natural Cerro El Inglés. 

Conservation Needed
In light of the threat of chytridiomycosis, it may be advisable to establish an ex situ breeding program should any further individuals be located. 

Research Needed
Further research in population trends, ecology, threats and distribution are recommended for the species.

Citation: IUCN SSC Amphibian Specialist Group. 2017. Atelopus chocoensis. The IUCN Red List of Threatened Species 2017: e.T54499A49534920. . Downloaded on 24 May 2018.
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