Octodontidae


Also found in: Dictionary, Wikipedia.

Octodontidae

 

a family of mammals of the order Rodentia. Octodont rodents resemble rats. They have small, bare ears and solid brown coloration. The body length is up to 19.5 cm, and the tail length reaches 18 cm. The teeth, which have no roots, grow constantly.

There are five genera of octodont rodents, embracing eight species. They inhabit the western part of South America, from Argentina to Patagonia, where they are encountered in coastal regions and in mountainous areas with elevations to 3,500 m. The animals are active at twilight and at night. Most species live in burrows of their own construction. The most common species is the degus (Octodont degus), which sometimes damages agricultural crops.

Fossil remains of octodont rodents are known from the Oligocene. Five other genera, including Myocaster, which are separated by some zoologists into the family Capromyidae, are sometimes assigned to the family Octodontidae.

Mentioned in ?
References in periodicals archive ?
Besides, the recent discovery of allopolyploidy in 2 rodent species belonging to Octodontidae (Gallardo et al.
Habitat shift after experimental removal of the bigger species in sympatric Ctenomys talarum (Rodentia: Octodontidae).
The degu, Octodon degus (Octodontidae), is a diurnal, herbivorous, caviomorph rodent inhabiting the semiarid and mediterranean environments of northern and central Chile.
Evolucion de un complejo de especies de Ctenomys (Octodontidae, Rodentia) del noreste argentino: filogenia, variabilidad cromosomica y dinamica del ADN satelite.
Activity patterns in a subterranean social rodent, Spalacopus cyanus (Octodontidae).
Entre los grupos mas significativos reportados en las distintas regiones geocronologicas se destacan los Erethizontidae Coendou magnus, Phyllotini indeterminados (Cricetidae), Echimyidae, Octodontidae y Chinchillidae fosoriales, hidrocoeridos semiacuaticos y abrocomidos (Abrocomidae).
The viscacha rat (Octomys mimax Thomas 1920, Rodentia, Octodontidae) is a rock-dwelling hystricognath rodent that selects crevices in rocky outcrops as resting and nesting places with high vegetation cover (Ebensperger et al., 2008; Traba et al., 2010; Campos, 2012; Campos and Giannoni, 2013).
Chromosome multiformity in the genus Ctenomys (Rodentia, Octodontidae).
Ritmos de actividad locomotora y uso de las cuevas en condiciones seminaturales en Ctenomys talarum (Rodentia, Octodontidae).