Lemurs likely most endangered vertebrates, biologists report
More than nine out of 10 lemur species are threatened, conservationists concluded this week in Madagascar, home to more threatened species than any other country.
© Conservation International/photo by Russell A. Mittermeier
Of all the world's animals living on the verge of extinction, Madagascar's lemurs are teetering closest to the brink. A new assessment of these primates reveals they are probably the most endangered group of vertebrates on Earth, beating out all other mammals, reptiles, amphibians, birds and bony fish for the dismal distinction.
Ninety-one percent of the 103 known lemur species are threatened, conservationists concluded this week at a workshop of the International Union for Conservation of Nature (IUCN) Species Survival Commission in Antanarivo, Madagascar's capital. Twenty-three of the species are now considered "critically endangered," 52 are "endangered," and 19 are "vulnerable" on the IUCN's Red List of Threatened Species, compared to 10 percent, 21 percent and 17 percent, respectively, at the time of the previous assessment carried out in 2005.
"The results of our review workshop this week have been quite a shock as they show that Madagascar has, by far, the highest proportion of threatened species of any primate habitat region or any one country in the world. As a result, we now believe that lemurs are probably the most endangered of any group of vertebrates," said the primatologist Christoph Schwitzer, head of research at Bristol Zoo Gardens in the United Kingdom and the IUCN advisor on Madagascar's primates, in a statement.
Along with lorises and bushbabies, lemurs belong to a group called prosimian primates, defined as all primates that are neither monkeys nor apes. Lemurs live in the wild only on Madagascar; their ancestors likely rafted to the island on clumps of vegetation and trees more than 60 million years ago.