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Macrotarsomys bastardi
bastard big-footed mouse


By Andrew Pitoniak

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Rodentia
Family: Nesomyidae
Genus: Macrotarsomys
Species: Macrotarsomys bastardi

Geographic Range

Macrotarsomys bastardi is found throughout southern and western Madagascar. (Anderson and Jones 1984, Nowak 1999, Parker 1990, Wilson and Reeder 1993)

Biogeographic Regions
ethiopian (Native )

Habitat

Preferred habitats for M. bastardi are dry scrublands, dry deciduous forests, and grassland regions. (Wilson and Reeder 1993)

Terrestrial Biomes
savanna or grassland ; scrub forest

Physical Description

Range mass
21 to 38 g
(0.74 to 1.34 oz)

Macrotarsomys bastardi is the smallest species of the murid subfamily, Nesomyinae, the Malagasy mice. M. bastardi is similar in appearance to gerbils. Pelage color is brownish fawn on the upper body with a whitish underbelly. Body length ranges from 80 to 100 mm and tail length from 100-145 mm. The tail has a thin tuft of elongated hair at the end. The hind feet are rather large in comparison to body size and range from 22-28 mm long. Ears are from 22 to 25 mm long. The dental formula is 1/1, 0/0, 0/0, 3/3 = 16. Incisors are opisthodont and smooth faced. M. bastardi also has a weakly developed supraorbital shelf and moderately inflated auditory bullae. (Anderson and Jones 1984, Macdonald 1993, Nowak 1999, Parker 1990)

Reproduction

M. bastardi tend to live in pairs. This species is known to have 2-3 young per litter and to breed year round. Average gestation period is 24 days. In some studies females have bitten their mates to death. (Anderson and Jones 1984, Parker 1990)

Behavior

These animals depend on running and jumping for locomotion. M. bastardi individuals spend most of the daylight hours in a burrow or lodge with the entrance hole sealed to keep out predators. Most activity occurs at night when they are foraging. (Anderson and Jones 1984, Parker 1990)

Food Habits

Their diet mainly consists of berries, fruits, seeds, roots, and plant stems. Little else is known about their food habits. (Parker 1990)

Economic Importance for Humans: Positive

There are no known positive benefits to humans.

Economic Importance for Humans: Negative

There are no known negative affects on humans.

Conservation Status

IUCN Red List [Link]
Lower Risk - Least Concern

US Federal List [Link]
No special status

CITES [Link]
No special status

For More Information

Find Macrotarsomys bastardi information at

Contributors

Andrew Pitoniak (author), St. Lawrence University, Erika Barthelmess (editor), St. Lawrence University.

References

Anderson, S., J. Jones, JR.. 1984. Orders and Families of Recent Mammals of the World. New York: John Wiley & Sons.

Macdonald, D. 1993. The Encyclopedia of Mammals. New York: Facts on File Inc..

Nowak, R. 1999. Walker's Mammals of the World. Baltimore and London: The John Hopkins University Press.

Parker, S. 1990. Grzimek's Encyclopedia of Mammals. New York: McGraw-Hill Inc..

Wilson, D., D. Reeder. 1993. Mammal Species of the World. Washington and London: Smithsonian Institution Press.

To cite this page: Pitoniak, A. 2001. "Macrotarsomys bastardi" (On-line), Animal Diversity Web. Accessed February 12, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Macrotarsomys_bastardi.html

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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