Abrotrichini

Abrotrichini is a taxonomic tribe within the subfamily Arvicolinae, commonly known as voles and lemmings. This tribe encompasses a group of small rodents characterized by their compact bodies, short limbs, and often densely furred tails. The members of Abrotrichini are primarily found in South America, with a distribution that ranges from the Andes Mountains to more southern regions.

The specific genera included within Abrotrichini can vary slightly depending on the taxonomic authority, but typically it includes genera such as Abrothrix, Chelemys, Geoxus, and Notiomys. These rodents are generally terrestrial, inhabiting a variety of environments including grasslands, shrublands, and forests. Their diets are largely herbivorous, consisting of grasses, seeds, and roots, though some may also consume insects.

Reproduction in Abrotrichini species is usually rapid, with females producing multiple litters per year. This reproductive strategy allows populations to recover quickly from environmental fluctuations. Evolutionary studies suggest that Abrotrichini diversified from other South American arvicolines, adapting to the diverse ecological niches available on the continent. Further research continues to refine our understanding of their phylogenetic relationships and ecological roles.