Allobates olfersioides 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Aromobatidae

Scientific Name: Allobates olfersioides (Lutz, 1925)
Common Name(s):
English Rio Rocket Frog
Colostethus olfersioides Edwards, 1971
Eupemphix olfersioides Lutz, 1925
Phyllobates alagoanus Bokermann, 1967
Phyllobates capixaba Bokermann, 1967
Phyllobates carioca Bokermann, 1967
Taxonomic Source(s): Frost, D.R. 2014. Amphibian Species of the World: an Online Reference. Version 6 (27 January 2014). New York, USA. Available at: (Accessed: 27 January 2014).
Taxonomic Notes: Based on morphological analyses, Verdade and Rodrigues (2007) allocate all Atlantic Forest species of Allobates to synonymy with Allobates olfersioides.

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2a; B2ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2008-11-07
Assessor(s): Vanessa Verdade
Reviewer(s): Ariadne Angulo and Simon Stuart
Listed as Vulnerable because of a population decline despite its widespread distribution, its association to the highly threatened Atlantic rainforest biome, occurrence in areas affected by human population expansion, and geographic overlap with the chytrid's distribution in Brazil.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Allobates olfersioides is found in coastal forests of the Atlantic Domain from sea level to about 1000 masl. The species can be found from the north of the state of Alagoas to the south of the state of Rio de Janeiro (between
08 54 S and 23 00 S latitudinal degrees), potentially occurring in Parque Estadual do Rio Doce, state of Minas Gerais (Verdade and Rodrigues, 2007).
Countries occurrence:
Brazil (Alagoas, Bahia, Sergipe)
Additional data:
Upper elevation limit (metres):1000
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It used to be a very common species, but it has recently declined and is now absent from several historical localities in the states of Rio de Janeiro and Espírito Santo. The species still appears to be relatively common in northeastern Brazil (V. Verdade, pers. comm. 2008).
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Allobates olfersioides is diurnal and lives on the forest floor of primary and secondary forests. The tadpoles hatch in humid terrestrial nests and are carried by their parents to puddles or small rivulets on the forest floor where they feed until metamorphosis. Males are known to carry tadpoles (ca Gosner stage 25) (Verdade and Rodrigues, 2007).
Gravid females were observed in February, April, August, and September, suggesting that reproduction is likely to occur throughout the year. In addition, they have been found to have both mature eggs and developing follicles in the ovaries, which again suggests that they may reproduce more than once during the reproductive season. Females were found to have a maximum of 11 mature eggs (ca 1.5 mm each) and a mean of 8 eggs (Verdade and Rodrigues, 2007). In Bahia, this species was found to have a strong association to bromeliads (Tinoco et al., 2008).
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): Habitat loss, due to deforestation and agricultural development, is ongoing, but may not have been severe enough to cause the declines that have been observed. In Bahia, this species was found to be one of the most threatened by environmental loss (Tinoco et al., 2008). Chytridiomycosis could be implicated in declines, specimens from Rio de Janeiro tested positive for chytrids (Carnaval et al., 2006).

Conservation Actions [top]

Conservation Actions: It is known to occur in several protected areas, such as Parque Nacional da Serra da Bocaina. Research to determine the causes of the current decline is urgently needed.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable  major importance:Yes
3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability:Suitable  major importance:Yes
5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha)
suitability:Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
In-Place Species Management
In-Place Education
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Residential & commercial development -> 1.2. Commercial & industrial areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.3. Agro-industry farming
♦ 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 -> 8.1. Invasive non-native/alien species/diseases -> 8.1.2. Named species [ Batrachochytrium dendrobatidis ]
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Carnaval, A.C.O.Q.; Puschendorf, R.; Peixoto, O.L.; Verdade, V.K. and Rodrigues, M.T. 2006. Amphibian chytrid fungus broadly distributed in the Brazilian Atlantic Rainforest. Ecohealth (online, DOI 10.1007/A10393-005-008-2).: online, DOI 10.1007/A10393-005-008-2.

Cochran, D.M. and Goin, C.J. 1970. Frogs of Colombia. United States National Museum Bulletin, Smithsonian Institution Press, Washington, D.C.

Eterovick, P.C., Carnaval, A.C.O.Q., Borges-Nojosa, D.M., Silvano, D.L., Segalla, M.V. and Sazima, I. 2005. Amphibian declines in Brazil: an overview. Biotropica: 166-179.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.2). Available at: (Accessed: 29 June 2010).

Izecksohn, E. and Carvalho-e-Silva, S.P. 2001. Anfíbios do município do Rio de Janeiro. Editora UFRJ, Rio de Janeiro.

Lutz, B. 1954. Anfíbios Anuros do Distrito Federal. Memórias do instituto Oswaldo Cruz: 155-197.

Rivero, J.A. 1988. Sobre las relaciones de las especies del género Colostethus (Amphibia, Dendrobatidae). Memoria de la Sociedad de Ciencias Naturales La Salle: 3-32.

Tinoco, M.S., Ribeiro, H.C.B., Cerqueira, R., Dias, M.A. and Nascimento, I.A. 2008. Habitat change and amphibian conservation in the Atlantic Forest of Bahia, Brazil.

Verdade, V.K. 2001. Revisão das espécies de Colostethus Cope, 1866 da Mata Atlântica (Anura, Dendrobatidae). Dissertacão Apresentada ao Instituto de Biociências da Universidade de São Paulo.

Verdade, V.K., and Rodrigues, M.T. 2007. Taxonomic review of Allobates (Anura, Aromobatidae) from the Atlantic Forest, Brazil. Journal of Herpetology 41: 566-580.

Citation: Vanessa Verdade. 2010. Allobates olfersioides. The IUCN Red List of Threatened Species 2010: e.T55122A11255268. . Downloaded on 17 August 2018.
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