This small cursorial mouse has homogenous dorsal pelage that can range from dark to golden brown and it is 1 of 41 species in the genus Akodon. It is endemic to Brazil, South America, and is found in the Atlantic Forest, being the most abundant sigmodontine rodent of this large area. Deforestation within the range of A. Further- more, the usage of nonvalid synonyms has increased the Habrothrix cursor Winge, Santa, Minas Gerais.
|Published (Last):||4 December 2013|
|PDF File Size:||8.86 Mb|
|ePub File Size:||10.43 Mb|
|Price:||Free* [*Free Regsitration Required]|
Description[ edit ] The cursor grass mouse is a moderately sized rodent, with a head-body length of 11 to 13 centimetres 4. Males are larger than females, weighing an average of 54 grams 1. They have a typical mouse-like appearance, with short whiskers and stubby claws on the feet. They have dark to golden brown fur over most of their body, with paler greyish or yellowish underparts. Some have a whitish spot between the ears, but this is not present on all individuals.
In particular, they cannot easily be distinguished from the closely related montane grass mouse , which inhabits neighbouring regions to the immediate south. Although the cursor grass mouse is, on average, slightly larger than the montane species, there is too much overlap for this to be a reliable guide. Instead, they can most readily be distinguished by the presence of a gall bladder in A. Some sources  also report it as being found further south, in extreme southern Brazil, in eastern Paraguay , and in northern Argentina.
Biology and behaviour[ edit ] Cursor grass mice are omnivorous. Their primary diet consists of small arthropods, especially Hymenoptera , beetles , and spiders ; this is supplemented by seeds of Cecropia and other plants. Pregnant females construct globular nests, and give birth to a litter of two to nine young, with an average of four, after a gestation period of 23 days.
Cursor grass mouse
The nasals are long and project behind the maxilla-frontal structure. Giving Directory Site Index. A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. Akodon montensis is the most common rodent species of the forest-grassland ecotome. Glossary Neotropical living in the cursr part of the New World. Topics Discussed in This Paper. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a now extinct synapsid ancestor; the fossil record does not distinguish these possibilities.
AKODON CURSOR PDF