Dozens of primate species on the brink: study

Feb 18, 2010 by Marlowe Hood
File photo shows a juvenile mountain gorilla feeding on leaves on the slopes of Mount Mikeno in the Virunga National Park. Seldom seen species of lemur, monkey and gorilla are among 25 primates facing near-certain extinction unless urgent measures are taken to protect them, according to a report released Thursday.

Seldom seen species of lemur, monkey and gorilla are among 25 primates facing near-certain extinction unless urgent measures are taken to protect them, according to a report released Thursday.

All told, close to half of the planet's 634 known are to some degree threatened with dying out, said the International Union for the Conservation of Nature (IUCN) and other conservation and research groups.

That percentage has risen quickly -- only three years ago the IUCN put the ratio of vulnerable primates at one third.

"Primates are among the most endangered of all vertebrate groups," said Russell Mittermeier, head of the IUCN's primate specialist group.

Of the top 25, five are on the island of Madagascar, six on the , three in South America and 11 in Southeast Asia.

The least likely to survive might well be the golden-headed langur of Vietnam, found exclusively on the island of Cat Ba in the Gulf of Tonkin. Only 60 to 70 individuals remain.

Two other species hover in number at around 100: the northern sportive of , and the eastern black crested gibbon of northern Vietnam.

Human encroachment has reduced the population of cross river gorillas, found in the mountains along the Cameroon-Nigeria border, to less than 300.

The most threatened species are not always the rarest, experts point out.

How well governments protect dwindling animal populations against deforestation and hunting is at least as critical.

More than 6,000 Sumatran orangutans, for example, are thought to survive on Indonesia's largest island. But poor enforcement of conservation measures has led to plummeting numbers and an unenviable place on the list of most critically endangered primates.

By contrast, the Hainan gibbon -- named for the Chinese island where they are found -- "is actually the world's rarest primate," said Simon Stuart, head of the IUCN's Species Survival Commission.

"But the Chinese government has some very strict conservation measures, so it is not on the list because there is not much more that can be done," he said in a phone interview.

Even so, he added, "it is one thing to stop a species from going extinct, and it is another thing to talk about recovery."

Globally, habitat destruction, especially through the burning and clearing of tropical forests for agriculture, has been the main driver toward extinction.

But in Southeast Asia, hunting for food and traditional medicines made from animal parts -- fueled by an illegal trade in wildlife -- is an even greater threat.

"It comes out again and again from all our studies, tropical Asia is by far the worst place to be for any animal bigger than a rabbit," said Stuart.

The situation in Vietnam and Laos, he added, is "particularly desperate."

Researchers hope the 'top 25' list will garner public and government support for urgently needed measures, especially ahead of the next meeting of the UN's Convention on Biological Diversity, set for October in Nagoya, Japan.

"We have the resources to address this crisis, but so far, we have failed to act," said Mittermeier.

Explore further: Research shows impact of BMR on brain size in fish

Related Stories

Extinction alert issued for 800 species

Dec 13, 2005

Conservation and environmental groups have compiled a list of nearly 800 species they say face imminent extinction. Most of the threatened species are found mainly in tropical areas, the BBC reported Tuesday.

Last chance to save the saola from extinction?

Sep 03, 2009

Conservation biologists based in four countries gathered for an emergency meeting in Vientiane, Lao PDR, August 19, to address the peril of extinction facing one the world's most enigmatic mammals, the Saola.

Over 17,000 species threatened by extinction

Nov 02, 2009

(AP) -- A rare Panamanian tree frog, a rodent from Madagascar and two lizards found only in the Philippines are among over 17,000 species threatened with extinction, a leading environmental group said Tuesday.

Recommended for you

Research shows impact of BMR on brain size in fish

18 hours ago

A commonly used term to describe nutritional needs and energy expenditure in humans – basal metabolic rate – could also be used to give insight into brain size of ocean fish, according to new research by Dr Teresa Iglesias ...

Why do animals fight members of other species?

Apr 23, 2015

Why do animals fight with members of other species? A nine-year study by UCLA biologists says the reason often has to do with "obtaining priority access to females" in the area.

Dolphins use extra energy to communicate in noisy waters

Apr 23, 2015

Dolphins that raise their voices to be heard in noisy environments expend extra energy in doing so, according to new research that for the first time measures the biological costs to marine mammals of trying ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

breadhead
1 / 5 (1) Feb 21, 2010
Isn't this a good thing? Then we won't have to worry about these critters evolving into humans, and increasing the human population. I was just reading another article on this site, talking about having enough food in the future, do to so-called global warming.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.