Mammals
Black-and-White Ruffed Lemur
Varecia variegata · also called ruffed lemur
Tucked safely into a woven nest while their mother forages nearby, a litter of up to six black-and-white ruffed lemur infants represents a reproductive strategy unlike almost any other primate, born in numbers and parked rather than carried through the Madagascan rainforest.
Overview
The black-and-white ruffed lemur, Varecia variegata, is the most frugivorous lemur species, native to rainforest habitat across parts of eastern Madagascar. Its unusually large litters, nest-parking parenting strategy, and heavy dependence on large fruiting trees make it one of the most reproductively distinctive and habitat-sensitive lemurs found anywhere on the island.
A different approach to raising young
While most primates carry a single infant everywhere, the black-and-white ruffed lemur instead gives birth to litters of several young and parks them safely in a nest, a genuinely unusual parenting strategy among primates that reflects just how differently this species has evolved to raise its offspring.
Status
Critically Endangered, having declined severely due to extensive logging and clearing of the mature rainforest and large fruiting trees it depends on across eastern Madagascar.
Black-and-White Ruffed Lemur: common questions
How many young does the black-and-white ruffed lemur have at once?
This species can give birth to litters of up to six young at once, an unusually large litter size compared with the single infant typical of most other primate species, reflecting a very different reproductive strategy from most of its close relatives.
Does the black-and-white ruffed lemur carry its babies like other primates?
No, this species builds a nest for its newborn young and parks them there while foraging, rather than carrying infants constantly as most other primate mothers do, an unusual parenting strategy suited to raising a larger-than-typical litter.
Why is the black-and-white ruffed lemur so vulnerable to logging?
This species relies more heavily on fruit than any other lemur species, making it particularly sensitive to the loss of large, mature fruiting trees, since logging removes exactly the kind of resource-rich, long-established trees this species depends on most.
How does the black-and-white ruffed lemur help its ecosystem?
This species is an important pollinator for the traveler's tree, a distinctive Madagascan plant with large flowers that few other animals are able to access effectively, making the lemur a key partner for that plant's reproduction.