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 Akodon spegazzinii

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taixyz1992
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Number of posts : 409
Registration date : 2010-11-14

PostSubject: Akodon spegazzinii   Fri Feb 11, 2011 10:35 pm

Akodon spegazzinii, also known as Spegazzini's Akodont[4] or Spegazzini's Grass Mouse,[1] is a rodent in the genus Akodon found in northwestern Argentina. It occurs in grassland and forest at 400 to 3500 m (1300 to 11500 ft) above sea level. After the species was first named in 1897, several other names were given to various populations now included in A. spegazzinii. They are now all recognized as part of a single, widespread and variable species. It is related to Akodon boliviensis and other members of the A. boliviensis species group. Akodon spegazzinii reproduces year-round. Because it is widely distributed and common, Akodon spegazzinii is listed as "Least Concern" on the IUCN Red List.

Akodon spegazzinii is medium in size for the A. boliviensis species group. The coloration of its upperparts varies considerably, from light to dark and from yellowish to reddish. The underparts are yellow-brown to gray. The eyes are surrounded by a yellow ring. The skull contains a hourglass-shaped interorbital region (between the eyes) and various features of the skull distinguish the species from its close allies. A. spegazzinii has 40 chromosomes. Head and body length is 93 to 196 mm (3.7 to 7.7 in) and body mass is 13.0 to 38.0 g (0.46 to 1.34 oz).

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