Trinomys gratiosus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Echimyidae

Scientific Name: Trinomys gratiosus (Moojen, 1948)
Taxonomic Notes: This species formerly was considered a subspecies of Trinomys [=Proechimys] iheringi, but see Lara and Patton (2000) for reasons to recognize this form as a distinct species. There are two subspecies: T. g. gratiosus and T. g. bonafidei (Emmons et al. 2015).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-05-05
Assessor(s): Patterson, B.
Reviewer(s): Amori, G.
Contributor(s): Pierro, H., Leite, Y., Brito, D. & Bergallo, H.
This species is listed as Least Concern in view of its presumed large population, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category. Although the area of occupancy is estimated to be less than 2,000 km²; the species' habitat is relatively intact, it occurs in a number of protected areas and there are no major threats to the species.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from several localities along the Serra do Mar and Serra da Mantiqueira mountains of Espirito Santo, Minas Gerais, and Rio de Janeiro states in Brazil (Fabre 2016, Pessôa et al. 2015, Attias et al. 2009). It is found above 600 m asl (Leite 2003, Lara and Patton 2000).
Countries occurrence:
Additional data:
Lower elevation limit (metres):600
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is common and its population is presumed to be large (H. Bergallo pers. comm.).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This rodent occurs in primary and second growth rainforest with a dense overstory (Leite 2003). T. g. gratiosus is known from coastal forests in Espirito Santo and northeastern Rio de Janeiro inland to southern Minas Gerais and the Parque Nacional do Itataia in northwestern Rio de Janeiro, Brazil. T. g. bonafidei occurs in forested habitats in the coastal ranges of Rio de Janeiro. The species has been collected in climax forest (Pessôa et al. 2015).
Generation Length (years):1-2

Threats [top]

Major Threat(s): There are no major threats at this time (H. Bergallo pers. comm.).

Conservation Actions [top]

Conservation Actions: This species occurs in Itatiaia National Park (Bonvicino et al. 2002). Its montane habitat is better preserved than its lowland habitat. This species is protected in several state and national parks as well as reserves.

Citation: Patterson, B. 2016. Trinomys gratiosus. The IUCN Red List of Threatened Species 2016: e.T136221A22212027. . Downloaded on 17 October 2017.
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