Thomasomys ucucha 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Thomasomys ucucha
Species Authority: Voss, 2003

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Pacheco, V., Tirira, D. & Boada, C.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
This species is listed as Vulnerable because it is known from only a single location is is threatened by conversion of habitat to agriculture.

Geographic Range [top]

Range Description: This species occurs in the crest of cordillera Oriental, 3,350-3,700 m asl, north central Ecuador (Napo and Pichincha Provinces) (Voss, 2003; Musser and Carleton, 2005). The species is known from a single location.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is frequently captured but only at a single location (V. Pacheco pers. comm.).
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This species has been captured in grassy paramo, in shrubby paramo/forest ecotone or in grassy glades surrounded by forest, and in deep inside Subalpine Rain Forest. Most recorded captures were on the ground, on special rabbit trails or runways through dense grass or low herbs, and along the wet margins of small streams. Other muroid species that were trapped syntopically (in the same habitats) with T. ucucha include Akodon latebricola, Akodon mollis, Anotomys leander, Chilomys instans, Microryzomys altissimus, M. minutus, Neusticomys monticolus, T. aureus, T. baeops, T. cinnameus, T. erro, and T. paramorum (Voss, 2003).
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threats are deforestation, fragmentation, and agriculture.

Conservation Actions [top]

Conservation Actions: This species occurs close to two ecological protected areas: Antisana and Cayambe-Coca Ecological Reserves (D. Tirira pers. comm.).

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Suitable  
4. Grassland -> 4.7. Grassland - Subtropical/Tropical High Altitude
suitability: Suitable  

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

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

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

Bibliography [top]

Musser, G. G. and Carleton, M. D. 2005. Superfamily Muroidea. In: D. E. Wilson and D. A. Reeder (eds), Mammal Species of the World: a geographic and taxonomic reference, pp. 894-1531. The John Hopkins University Press, Baltimore, USA.

Voss, R.S. 2003. A New Species of Thomasomys (Rodentia: Muridae) from Eastern Ecuador, with Remarks on Mammalian Diversity and Biogeography in the Cordillera Oriental. American Museum Novitates 3421: 1-48.

Citation: Pacheco, V., Tirira, D. & Boada, C. 2008. Thomasomys ucucha. The IUCN Red List of Threatened Species 2008: e.T136487A4299030. . Downloaded on 27 November 2015.
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