Robinson’s Mouse Opossum, Marmosa robinsoni

Robinson’s mouse opossum (Marmosa robinsoni) can be found in Colombia, Ecuador, Belize, Honduras, Panama, Peru, Grenada, Venezuela, and Trinidad and Tobago. This species prefers a large variety of habitats including mangrove, lowland, and montane forests and savannahs or shrublands.  It can occur at elevations between sea level and 8,530 feet.

Robinson’s mouse opossum is thought to occur in home ranges of up to 269 square feet, although pregnant females will reduce their home ranges significantly. One study, conducted in northwestern Venezuela in a xeric shrubland, showed that females increased in size three times faster than males. The diet of this species is thought to consume a large amount of columnar cacti fruit, although it most likely consumes insects as well.

It is thought that Robinson’s mouse opossum is one of the most abundant small mammals within its range, and future studies are thought to produce records of different species or subspecies. There are no major threats to this species, and it is found in high numbers throughout its range. It is thought to persist against some degree of habitat destruction and appears in a few protected areas. Because of these reasons, Robinson’s mouse opossum appears on the IUCN Red List with a conservation status of “Least Concern.”

Image Caption: Marmosa robinsoni. Credit: Esteban Alzate/Wikipedia (CC BY-SA 2.5)