Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

White-handed gibbons extinct in China

19.05.2008
China's fauna exhibits a unique diversity of apes. Unfortunately, the apes are more strongly endangered by extinction in China than in any other country. A research team assembled by anthropologists of Zurich University now conclude that an other ape species has just become extinct in China's Yunnan province.

A scientific team, consisting of members of the Gibbon Conservation Alliance based at Zurich University and the Kunming Institute of Zoology, as well as staff members of the Nangunhe National Nature Reserve, carried out a survey in all Chinese forests reported to support white-handed gibbons (Hylobates lar) during the last 20 years.


The species was last observed in 1988 in the Nangunhe Nature Reserve in south-western Yunnan province, and their loud, melodious calls were last heard in 1992. After two weeks of field work, the 14 member Swiss-Chinese team realized: As a result of continued forest destruction, fragmentation and deterioration, as well as hunting, this gibbon species is no longer part of the Chinese fauna.

«This loss is particularly tragic», says anthropologist Thomas Geissmann, «because the extinct Chinese population was described as a distinct subspecies, the so-called Yunnan white-handed gibbon.» This subspecies (Hylobates lar yunnanensis) is not known from any other place. Geissmann now hopes, that the subspecies may have survived in neighbouring Myanmar, but so far, he has no evidence for this.

«The extinction of the Chinese white-handed gibbons is an urgent alarm signal, because several other ape species in Chinas are also endangered by extinction», says Geissmann. For instance the white-cheeked crested gibbon (Nomascus leucogenys) has not been sighted in China since the 1980s. Of the Cao-Vit crested gibbon (N. nasutus) in the provinces Guangxi (China) and Cao Bang (Vietnam) there are less than 50 individuals, and of the Hainan crested gibbon (N. hainanus) on the South-Chinese island of Hainan less than 20 individuals, to mention just the two most endangered species. Therefore, the scientists warn that the loss of the Yunnan white-handed gibbons may only be the beginning of an unprecedented wave of extinctions which threatens to terminate most, if not all, Chinese ape species.

«We hope that our research results will alarm the Chinese government as well as international conservation agencies and encourage them to initiate immediate efforts to save China’s last surviving apes», says Geissmann.

Beat Mueller | alfa
Further information:
http://www.unicom.uzh.ch

More articles from Ecology, The Environment and Conservation:

nachricht Upcycling 'fast fashion' to reduce waste and pollution
03.04.2017 | American Chemical Society

nachricht Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>