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Microcebus murinus (J

Gray mouse lemur; Lemur murinus

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Scientific source:
      Integrated Taxonomic Information System


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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Mammalia -> Order Primates -> Suborder Strepsirrhini -> Family Cheirogaleidae -> Species Microcebus murinus

Microcebus murinus
gray mouse lemur



2010/02/07 03:45:17.614 US/Eastern

By David Alvarado

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Primates
Suborder: Strepsirrhini
Genus: Microcebus
Species: Microcebus murinus

Geographic Range

Microcebus murinus is found throughout Madagascar in dense forest regions.

Biogeographic Regions:
ethiopian ( native ).

Habitat

Gray mouse lemurs are extremely arboreal.They move by leaping from the branches of trees. They generally forage close to ground level. They inhabit a wide variety of forest types throughout Madagascar, and are found mostly in the dry deciduous forests of southern and western Madagascar in the regions between Fort-Dulphin and the Sambirano River.

These animals are found in the following types of habitat:
tropical ; terrestrial .

Terrestrial Biomes:
forest ; scrub forest .

Physical Description

Mass
60 g (average)
(2.11 oz)


Length
12 to 12 cm
(4.72 to 4.72 in)


Gray mouse lemurs are one of the smallest living primates. They are characterized by short limbs and large eyes. The head and body length is 12 to 14 cm and tail length of 13 to 14.5 cm. They have long, thin lower incisors and canines, making a dental comb used for grooming. They have a brownish-grey coat with reddish tones and a pale underside.

Some key physical features:
endothermic ; heterothermic ; bilateral symmetry .

Reproduction

Breeding season
Microcebus murinus reproduce between September and March.

Number of offspring
2 (average)

Gestation period
54 to 69 days

Birth Mass
6 g (average)
(0.21 oz)
[ External Source: AnAge ]


Age at sexual or reproductive maturity (female)
243 days (average)
[ External Source: AnAge ]


Age at sexual or reproductive maturity (male)
243 days (average)
[ External Source: AnAge ]


This species is polygynous; males mate with females in their home ranges.

Mating systems:
polygynous .

Microcebus murinus reproduce between September and March. The gestation period varys from 54-69 days. They usually give birth to twins.

Key reproductive features:
iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous .

Labor takes about 45 to 60 minutes and the infants begin to suckle after about 12 minutes. The infants weigh from 5.5-7g and are carried in the mother's mouth.

Parental investment:
pre-fertilization (protecting: female); pre-hatching/birth (provisioning: female, protecting: female); pre-weaning/fledging (provisioning: female, protecting: female); pre-independence (provisioning: female, protecting: female).

Behavior

Microcebus murinus are nocturnal foragers. They congregate at a common nest site during the day to sleep. The males sleep in pairs separate from the females. The females sleep in groups of up to fifteen. Females are dominant over males.

Food Habits

Microcebus murinus are mostly insectivorous. They occasionally eat small reptiles such as chameleons and tree frogs. They also feed on plants, leaves, fruits and flowers.

Primary Diet:
carnivore ( insectivore ).

Animal Foods:
amphibians; reptiles; insects.

Plant Foods:
leaves; fruit; flowers.

Economic Importance for Humans: Positive

Even though it is illegal to hunt and trade lemurs, mouse lemurs are often trapped and sold as pets.

Conservation Status

IUCN Red List: [link] :
Lower Risk - Least Concern.

US Federal List: [link] :
Endangered.

CITES: [link] :
Appendix I.

Microcebus murinus is one of the least threatened of all lemur species. Their abundance is most likely due their small size and variable diet. All lemurs are protected by laws that make them illegal to hunt or capture, except for research and breeding in zoos. Loss of habitat is the largest current threat to lemur populations. In particular, deforestation poses the greatest risk to this species. Over 250 mouse lemurs can be found in captivity worldwide.

For More Information

Find Microcebus murinus information at

Contributors

David Alvarado (author), University of Michigan.
Phil Myers (editor), Museum of Zoology, University of Michigan.

References

Accessed (Date Unknown) at http://mommensj.web2010.com/ .

July 25, 1999. "Grey Mouse Lemur" (On-line). Accessed October 12, 1999 at http://www.duke.edu/web/primate/mouse.html .

Kappeler, P., J. Ganzhorn. 1993. Lemur social systems and their ecological basis . New York: Plenum Press.

Wild Life preservation Trust International, 1998. "The Wild Ones" (On-line). Accessed (Date Unknown) at http://www.thewildones.org/Animals/lemur.html .

2010/02/07 03:45:18.557 US/Eastern

To cite this page: Alvarado, D. 2000. "Microcebus murinus" (On-line), Animal Diversity Web. Accessed February 09, 2010 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Microcebus_murinus.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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This material is based upon work supported by the National Science Foundation under Grants DUE-0633095 and DRL-0628151.
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