Telmatobufo bullocki 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Calyptocephalellidae

Scientific Name: Telmatobufo bullocki Schmidt, 1952
Common Name(s):
English Bullock’s Mountains False Toad
Taxonomic Source(s): Frost, D.R. 2015. Amphibian Species of the World: an Online Reference. Version 6.0. New York, USA. Available at:
Taxonomic Notes: There are tadpoles further north that could be Telmatobufo bullocki or Telmatobufo ignotus (C. Castro, F. Rabanal, J.C. Ortiz, A. Charrier pers. comm. July 2015). These samples are not included in this assessment until such time as their identities can be verified.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2017
Date Assessed: 2015-07-10
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Luedtke, J.
Contributor(s): Veloso, A., Valenzuela, A., Castro, C., Cuevas, C., Soto, C., Flores, E., Rabanal, F., Díaz-Paéz, H., Nunez, H., Ortiz, J.C., Vidal, M., Formas, R., Avilés, R. & Moreno, V.
Facilitator/Compiler(s): Angulo, A., Hobin, L., Best, S.
Listed as Endangered because its extent of occurrence (EOO) is 3,054 km2, its population is considered to be severely fragmented, and there is a continuing decline in the extent and quality of its habitat in Arauco Province, Chile.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from nine sites in the Coastal Range, Nahuelbuta, Arauco Province, Bio Bio and Araucania regions, Chile (Rabanal and Moreno 2014). It has an altitudinal range of 133–1,200 m Asl. Its EOO is 3,054 km2 and it is not expected to occur much more widely (C. Soto-Azat pers. comm. July 2015).
Countries occurrence:
Chile (Biobío, La Araucania)
Additional data:
Lower elevation limit (metres):133
Upper elevation limit (metres):1200
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is thought to be uncommon and of relatively low abundance (J.C. Ortiz, C. Soto-Azat and H. Díaz-Paez pers. comm. July 2015). It is considered to be severely fragmented and the population is suspected to be decreasing due to declines in the extent and quality of habitat.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:This species occurs in fast-flowing streams in temperate Nothofagus forest. It is tolerant of moderate habitat destruction. The tadpoles are free-swimming and feed by scraping algae off of submerged rocks.
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): The major threat to the species is clear cutting and afforestation with pine plantations, which causes siltation of streams (which, in turn, makes it harder for the larvae to feed). It is also threatened by introduced salmonids (V. Moreno pers. comm. July 2015).

Conservation Actions [top]

Conservation Actions: Conservation Actions
This species does not occur in the Parque Nacional Nahuelbuta, but it does occur in private protected areas.

Conservation Needed
There is a need for additional protection and maintenance of habitat at sites at which this species is known to occur.

Research Needed
Further survey are required to determine the full distribution of this species.

Classifications [top]

1. Forest -> 1.4. Forest - Temperate
suitability:Suitable season:resident major importance:Yes
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability:Suitable season:resident major importance:Yes
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:No
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.2. Wood & pulp plantations -> 2.2.2. Agro-industry plantations
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

8. Invasive and other problematic species, genes & diseases -> 8.4. Problematic species/disease of unknown origin -> 8.4.2. Named species [ Unspecified SALMONIFORMES ]
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.2. Soil erosion, sedimentation
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends

Bibliography [top]

Díaz-Páez, H. and Ortiz, J.C. 2003. Evaluación del estado de conservación de los anfibios en Chile. Assessment of the conservation status of amphibians in Chile. Revista Chilena de Historia Natural 76: 509-525.

Formas, J.R. 1995. Anfibios. In: J.M. Simonetti, T.K. Arroyo, TA. Spotorno and E. Loz (eds), Diversidad Biológica de Chile, Comisión nacional de ciencia y tecnología (CONICYT), Santiago-Chile.

Formas, J.R., Núñez, J.J. and Brieva, L.M. 2001. Osteología, taxonomía y relaciones filogenéticas de las ranas del género Telmatobufo (Leptodactylidae). Revista Chilena de Historia Natural 74: 365-387.

Glade, A. 1993. Red List of Chilean Terrestrial vertebrates. Corporación nacional forestal (CONAF), Santiago-Chile.

IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: (Accessed: 14 September 2017).

Núñez, J.J. and Formas, J.R. 2000. Evolutionary history of the Chilean frog genus Telmatobufo (Leptodactylidae): an immunilogical approach. Amphibia-Reptilia 21: 351-356.

Rabanal F.E., and Moreno-Puig V. 2014. New distribution records of the critically endangered frog Telmatobufo bullocki Schmidt, 1952 (Anura: Calyptocephalellidae) in southern Chile. Check List 10(2): 428–431.

Servicio Agrícola Ganadero. 1998. Cartilla de caza. Imp. I. Flores, Santiago de Chile.

Veloso, A. and Navarro, J. 1988. Lista Sistemática y distribución geográfica de anfibios y reptiles de Chile. Bollettino del Museo Regionale di Scienze Naturali - Torino 6(2): 481-539.

Citation: IUCN SSC Amphibian Specialist Group. 2017. Telmatobufo bullocki. The IUCN Red List of Threatened Species 2017: e.T21623A79810144. . Downloaded on 27 May 2018.
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