Cochabamba Akodont vs Delicate Pygmy Rice Rat

Akodon siberiae compared with Oligoryzomys delicatus

Key Differences

• Cochabamba Akodont is Near Threatened while Delicate Pygmy Rice Rat is Data Deficient.

Taxonomic Classification

Rank	Cochabamba Akodont	Delicate Pygmy Rice Rat
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order same	Rodentia (грызуны)	Rodentia (грызуны)
Family same	Cricetidae	Cricetidae
Genus	Akodon	Oligoryzomys
Species	Akodon siberiae	Oligoryzomys delicatus

Evolutionary Relationship

Cochabamba Akodont and Delicate Pygmy Rice Rat share a common ancestor at the Family level: Cricetidae.

Conservation Status

Cochabamba Akodont

NT — Near Threatened

Delicate Pygmy Rice Rat

DD — Data Deficient

Physical Characteristics

Attribute	Cochabamba Akodont	Delicate Pygmy Rice Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cochabamba Akodont

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Delicate Pygmy Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

Cochabamba Akodont

The Cochabamba akodont (Akodon siberiae) is a small South American rodent endemic to the Cochabamba department of Bolivia. A member of the speciose genus Akodon — the so-called grass mice — this species inhabits humid montane grasslands and shrublands in the Andes, typically at elevations between 2,500 and 3,800 metres. Like other akodont rodents, it is primarily granivorous and insectivorous, foraging among dense grass tussocks and low vegetation for seeds, invertebrates, and plant material. The species is fossorial to a degree, constructing runways and shallow burrows beneath grass cover that provide shelter from predators including raptors and small carnivores. Akodon siberiae was described relatively recently from specimens collected in the Cochabamba region and remains poorly known; much of its ecology and reproductive biology has been inferred from better-studied congeners. Population size estimates are unavailable, though the IUCN classifies it as Near Threatened due to its restricted range and ongoing habitat conversion driven by agricultural expansion, livestock grazing, and burning of Andean grasslands. The species may have some tolerance for modified habitats but its dependence on intact puna and montane scrub makes it vulnerable to continued land-use change. Conservation measures such as protection of remnant native grassland within its limited range are considered important for its long-term persistence.