Gastrotheca trachyceps 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Hemiphractidae

Scientific Name: Gastrotheca trachyceps Duellman, 1987
Common Name(s):
English Cerro Munchique Marsupial Frog
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: http://research.amnh.org/herpetology/amphibia/index.html.
Taxonomic Notes: This genus has recently been moved from the family Hylidae (Faivovich et al. 2005).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2017
Date Assessed: 2016-08-02
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Stuart, S.N.
Contributor(s): Castro, F. & Lynch, J.
Facilitator/Compiler(s): Hobin, L., NatureServe
Justification:
Listed as Endangered because its extent of occurrence (EOO) is 575 km2, it occurs in fewer than five threat-defined locations, and there is continuing decline in the extent and quality of its habitat in the Colombian Andes.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species was previously only known from Cerro Munchique on the Pacific slopes of the Cordillera Occidental, Cauca Department, Colombia. It is now also known from Vereda Santa Elena, Popayán, in the Cordillera Central, also in Cauca Department, Colombia (Colombia Red List Assessment Workshop August 2016). The elevational range is between 2,170–2,768 m asl (Duellman 1987, Guerrero-Vargas et al. 2007). Its EOO is 575 km2.
Countries occurrence:
Native:
Colombia
Additional data:
Number of Locations:2
Lower elevation limit (metres):2170
Upper elevation limit (metres):2768
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species was reported to be relatively common in Cerro Munchique. Surveys in the area in 2014, 2015, and 2016 failed to record the species (Colombia Red List Assessment Workshop August 2016). A second subpopulation was discovered in Vereda Santa Elena in 2005 when five individuals were found (Guerrero-Vargas et al. 2007; specimen identification verified by J. Lynch). An intensive search in this area in 2016 (three people over three nights) recorded a single individual (J. Guerrero-Vargas, unpubl. data 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:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species occurs on vegetation and next to streams inside forest and at the forest edge, and seeks refuge in bromeliads. It can occur in habitat such as páramo as long as there are bromeliads, and it has also been found in a pasture next to a stream (Guerrero-Vargas et al. 2007). Breeding is by direct development, with the eggs kept in the pouch of the female until hatched.
Systems:Terrestrial
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 been utilized.

Threats [top]

Major Threat(s): Although the species occurs within a protected area, cultivation of illegal crops is causing destruction of native habitat where the species was found in the park. Intensive spraying of glyphosate from 2002–2010 to eradicate illicit crops may also have impacted the species (Colombia Red List Assessment Workshop August 2016). In Vereda Santa Elena, the species is threatened by the establishment of eucalyptus plantations and pesticides used on these plantations (Colombia Red List Assessment Workshop August 2016).

Conservation Actions [top]

Conservation Actions: Conservation Actions
The type locality is entirely within Munchique National Park. The Vereda Santa Elena locality was declared in 2012 to be a watershed protection area (Fundación Pro-Cuenca Río Las Piedras-Empresa de Acueducto y Alcanterillado de Popayán) (Colombia Red List Assessment Workshop August 2016).

Conservation Needed
There is a need to combat activities that result in the loss of native habitat within the national park boundaries. 

Research Needed
More research is needed to better determine the range of the species and population size and trends.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability:Suitable season:resident 
4. Grassland -> 4.7. Grassland - Subtropical/Tropical High Altitude
suitability:Marginal season:resident 
14. Artificial/Terrestrial -> 14.2. Artificial/Terrestrial - Pastureland
suitability:Suitable season:resident 
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
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

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.3. Herbicides and pesticides
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality

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

Bibliography [top]

Duellman, W.E. 1987. The taxonomic status of populations of hylid Marsupial frogs referred to Gastrotheca argenteovirens (Boettger). Journal of Herpetology 21(1): 38-47.

Faivovich, J., Haddad, C.F.B., Garcia, P.C.O., Frost, D.R., Campbell, J.A. and Wheeler, W.C. 2005. Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. Bulletin of the American Museum of Natural History 294: 1-240.

Guerrero-Vargas, J.A., E.R. Coral-Plaza, M.P. Rivas-Pava, A.K. Meneses, and S. Ayerbe González. 2007. Cátologo de los anfibios de la Colección de Referencia del Museo de Historia Natural de la Universidad del Cauca. Taller Editorial Universidad del Cauca, Popayán.

IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-3. Available at: www.iucnredlist.org. (Accessed: 7 December 2017).


Citation: IUCN SSC Amphibian Specialist Group. 2017. Gastrotheca trachyceps. In: The IUCN Red List of Threatened Species 2017: e.T55362A85898448. . Downloaded on 12 December 2017.
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