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Hylaeamys oniscus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Hylaeamys oniscus
Species Authority: (Thomas, 1904)
Common Name(s):
English – Sowbug Rice Rat
Synonym(s):
Oryzomys oniscus Thomas, 1904
Taxonomic Notes: Oryzomys is a generic synonym (Weksler et al. 2006).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Percequillo, A. & Langguth, A.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
Justification:
This species is listed as Endangered because its extent of occurrence is less than 20,000 km², its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat, though it is common where it occurs.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs along the Atlantic forest coast from Pernambuco State to northern Bahia State, Brazil (Eisenberg and Redford, 1999).
Countries occurrence:
Native:
Brazil
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is locally common.
Current Population Trend:Decreasing
Additional data:
♦ Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:This species has not been captured outside of forested areas and is cuurently confined to mosaics of severely fragmented remaining forested areas within a limited range.
Systems:Terrestrial

Threats [top]

Major Threat(s): The major threats are habitat destruction, fragmentation and deforestation for sugar cane plantations. This species has a limited range in an area where much of the forest has been converted to agriculture and livestock.

Conservation Actions [top]

Conservation Actions: This species occurs in several protected areas, including Biological Reserve Saltinho.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
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 -> 2.1.3. Agro-industry farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.2. Small-holder grazing, ranching or farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.3. Agro-industry grazing, ranching or 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 -> 1.5. Threats

Bibliography [top]

Eisenberg, J.F. and Redford, K.H. 1999. Mammals of the Neotropics. The Central Neotropics. The University of Chicago Press, Chicago, USA.

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.

Weksler, M., Percequillo, A.R. and Voss, R.S. 2006. Ten new genera of Oryzomyine rodents (Cricetidae: Sigmodontinae). American Museum Novitates 3537: 1-29.
Citation: Percequillo, A. & Langguth, A. 2008. Hylaeamys oniscus. The IUCN Red List of Threatened Species 2008: e.T15608A4887846. . Downloaded on 24 July 2017.
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