Featured Research

from universities, journals, and other organizations

Critically Endangered Monkey Species Plummets More Than 50 Percent Since 1994

Date:
August 30, 2004
Source:
Conservation International
Summary:
The Delacour's langur (Trachypithecus delacouri), a charismatic monkey found only in a tiny area of northern Vietnam, is close to extinction, scientists at the International Primatological Society's 20th Congress report.

August 26, 2004 (Torino, Italy) – The Delacour's langur (Trachypithecus delacouri), a charismatic monkey found only in a tiny area of northern Vietnam, is close to extinction, scientists at the International Primatological Society's 20th Congress reported today. New research suggests that as many as 200 of the remaining 300 individuals, one of the most threatened primates in the world, are likely to disappear within the next decade.

Related Articles


Scientists estimate that between 281 and 317 individuals still exist in 19 distinct populations. Rampant development separates the remaining populations of this langur species, preventing the groups from interacting with one another. Fourteen of the groups are likely to disappear within the next decade, since they either lack a breeding pair or have unsustainably tiny populations. When hunters kill a male critical for reproduction, for example, it spells annihilation for the entire group.

Delacour's langur is threatened mostly from hunting. Poachers kill the animal not only for meat, but for bones, organs and tissues that are used in the preparation of traditional medicines. Habitat destruction, development and the increase of agricultural lands also threaten the species.

Surprisingly, the monkeys are more likely to be killed within protected areas, since they are more densely forested and poachers are more difficult to spot. Since unprotected areas in northern Vietnam tend to have less wildlife, poachers often avoid them and regard them as less profitable, allowing the few remaining langur populations to survive. Conservation groups are working to increase the level of protection of the protected areas to ensure the survival of the species.

The Delacour's langur is so rare, that is was first described by science only in 1932. Until the late 1980s, there was virtually no information about the existence and distribution of the species. In the early 1990s, hundreds of the langurs were found on limestone mountain ranges in a small area in northern Vietnam that comprises an area of only 5,000 square kilometers.

The langur is distinguished from other largely black-colored Asian langurs due to its white cheek bands, large white saddle on its outer thighs, and its thickly furred tail.

"At the rate that Delacour's langur is disappearing, it is unlikely that future generations will ever know this species outside of history books," said Tilo Nadler, Vietnam Country Representative for the Frankfurt Zoological Society. "Still, we have a limited window of opportunity to save them, and we hope the international community will rally around this incredible monkey."

Conservation efforts to protect Delacour's langur are centered in two national reserves in northern Vietnam. In Van Long National Reserve, created three years ago, approximately 70 individuals remain in three separate populations. Five ranger stations with 20 rangers have been created in an effort to improve management of the area, largely funded by the Frankfurt Zoological Society.

In the other protected area, Pu Luong National Reserve, a larger number of rangers and excellent management are helping to save the two small remaining populations, containing a total of about 50 individuals. Joining the two subpopulations, however, is impossible due to the increasing amount of agricultural space that divides them.

"Delacour's langur is one of the most Critically Endangered primates in the world, and its status is indicative of what is happening with about 10 percent of the nonhuman primates, our closest living relatives. We don't have a lot time to reverse this situation, but there is some good news," said Russell A. Mittermeier, president of Conservation International. "Recent new commitments by the Vietnamese government and several international conservation organizations greatly increase the chances of saving this remarkable species."

###

The International Primatological Society was created to encourage all area of non-human primatological scientific research, to facilitate cooperation among scientists of all nationalities engaged in primate research, and to promote the conservation of all primate species. The Society is organized exclusively for scientific, educational and charitable purposes.


Story Source:

The above story is based on materials provided by Conservation International. Note: Materials may be edited for content and length.


Cite This Page:

Conservation International. "Critically Endangered Monkey Species Plummets More Than 50 Percent Since 1994." ScienceDaily. ScienceDaily, 30 August 2004. <www.sciencedaily.com/releases/2004/08/040826084330.htm>.
Conservation International. (2004, August 30). Critically Endangered Monkey Species Plummets More Than 50 Percent Since 1994. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2004/08/040826084330.htm
Conservation International. "Critically Endangered Monkey Species Plummets More Than 50 Percent Since 1994." ScienceDaily. www.sciencedaily.com/releases/2004/08/040826084330.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins