Lepilemur mustelinus

Geographic Range

Sportive lemurs, Lepilemur mustelinus , live in the deciduous forests of the East and West coasts of Madagascar (Macdonald, 1984; Grzimek, 1990).

• Biogeographic Regions
• ethiopian ethiopian
  • native native

• Other Geographic Terms
• island endemic island endemic

Habitat

Sportive lemurs live in the deciduous, humid, and gallery forests of Madagascar. They sleep during the day in tree hollows or occasionally in nests in the open when there is little threat from predators (Macdonald, 1984; Richard, 1987).

• Habitat Regions
• tropical tropical
• terrestrial terrestrial

• Terrestrial Biomes
• forest forest

Physical Description

Sportive lemurs measure about 24 to 30 cm for head and body length, with a tail of about 22 to 29 cm. Typically, members of the genus weigh between 500 and 900 g. The tail is always shorter than the body, and the legs are always much longer than the arms. There are six recognized subspecies and fur coloration differs between populations. However, in general sportive lemurs are brown to grey on their backs and tails with a light to white underbelly. They have dense, woolly fur, and prominent ears. Their dental formula is 0/2, 1/1, 3/3, 3/3 = 32 (Macdonald, 1984).

• Other Physical Features
• endothermic endothermic
• bilateral symmetry bilateral symmetry

Reproduction

Males occupy territories by themselves which tend to overlap with the territories of two to three females with which they will mate (Macdonald, 1984; Richard, 1987).

• Mating System
• polygynous polygynous

Sportive lemurs reach sexual maturity at about 18 months of age. Sexual receptivity in females, estrous, is marked by a distinct swelling of the genitalia. Mating occurs from May through August. Females give birth to single young between September and November with a gestation period of about 135 days. The young are weaned around 4 months of age, but are not independent until they are about one year old. (Nowak, 1999; Macdonald, 1984; Richard, 1987).

• Key Reproductive Features
• iteroparous iteroparous
• seasonal breeding seasonal breeding
• gonochoric/gonochoristic/dioecious (sexes separate)
• sexual sexual
• fertilization fertilization
• viviparous viviparous

Not much is known about the parental behavior of these animals. Females sometimes carry their young, and sometimes "park" them on a branch while they forage. The young are weaned at about 4 months of age. Young follow their mother until they are around one year of age. The role of males in parental care has not been described.

• Parental Investment
• altricial altricial
• pre-fertilization
  • provisioning
  • protecting
    • female
• pre-hatching/birth
  • provisioning
    • female
  • protecting
    • female
• pre-weaning/fledging
  • provisioning
    • female
  • protecting
    • female
• pre-independence
  • protecting
    • female
• extended period of juvenile learning

Lifespan/Longevity

Members of the genus Lepilemur are reported to have lived as long as 12 years in captivity. Lepilemur mustelinus is probably similar.

Behavior

Lepilemur mustelinus is both arboreal and nocturnal. These lemurs move from tree to tree by leaping vertically beween tree trunks or vertical branches. They leap an average of five meters. When travelling on the ground, sportive lemurs can walk on all four feet or can leap on their hind legs. Although most of their activities are solitary, sportive lemurs sometimes gather in large groups before going out to feed alone. Occasionally a male-female pair will meet to feed, rest, or groom together but they rarely stay together for more than an hour at a time (Richard, 1987).

• Key Behaviors
• arboreal arboreal
• nocturnal nocturnal
• motile motile
• sedentary sedentary
• solitary solitary

Home Range

In Lepilemur leucopus , another member of the genus, home ranges of females measure 0.18 hectares, and those of males measure 0.30 hectares. Home ranges of L. mustelinus are probably comparable.

Communication and Perception

Visual displays, vocalizations, chases, and severe fighting have all been reported for this genus. Although not reported for these animals, prosimians usually scent mark their territories, and it is reasonable to suppose that L. mustelinus engages in some scent marking and chemical communication.

• Communication Channels
• visual visual
• tactile tactile
• acoustic acoustic
• chemical chemical

• Other Communication Modes
• scent marks scent marks

• Perception Channels
• visual visual
• tactile tactile
• acoustic acoustic
• chemical chemical

Food Habits

The diet of L. mustelinus is primarily leaves. However, these animals also eat fruit, flowers, and bark. Sportive lemurs may not be capable of completely digesting this folivorous diet and they have been known to eat their own feces, perhaps in order to extract more nutrients from the food on its second journey through their digestive tract. Sportive lemurs do not pick leaves or fruit from branches when feeding, but instead they bring branches to their mouths and feed directly from them (Grzimek, 1990; Richard, 1987).

• Primary Diet
• herbivore herbivore
  • folivore folivore

• Plant Foods
• leaves
• wood, bark, or stems
• fruit
• flowers

• Other Foods
• dung

Predation

These small nocturnal primates probably fall prey to raptors, snakes, fossas, and any other carnivorous animal large enough to subdue them. Humans are reported to hunt members of this genus for meat.

Ecosystem Roles

As frugivores, these primates probably help to disperse seeds. To the extent that they serve as prey for other animals, they may impact local food webs.

• Ecosystem Impact
• disperses seeds

Economic Importance for Humans: Positive

Sportive lemurs are sometimes hunted for their meat (Grzimek, 1990).

• Positive Impacts
• food food

Economic Importance for Humans: Negative

There are no known negative effects of sportive lemurs on humans.

Conservation Status

Lepilemur mustelinus is considered threatened due to habitat destruction and the breakdown of anti-hunting rules (Richard, 1987).

Other Comments

Due to human introduction of farming and domesticated animals on Madagascar, many species of lemurs have become extinct. Therefore, it is important to remember that no animals of Madagascar, including sportive lemurs, are members of intact ecological communities (Richard, 1987).

Additional Links

Encyclopedia of Life

Contributors

Nancy Shefferly (editor), Animal Diversity Web.

Christina Schreffler (author), University of Michigan-Ann Arbor, Phil Myers (editor), Museum of Zoology, University of Michigan-Ann Arbor.

References

Grzimek, 1990. Grzimek's Encyclopedia of Mammals . McGraw-Hill, Inc..

Macdonald, D. 1984. Encyclopedia of Mammals . Oxford: Equinox.

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

Richard, A. 1987. Malagasy Prosimians: Female Dominance. Pp. 25-33 in Primate Societies . Chicago: University of Chicago Press.