Navigation Links
Genetic study shows humans have pushed orangutans to the brink of extinction

A new study published in the open-access journal PLoS Biology shows strong genetic evidence of a catastrophic collapse in orangutan populations living in the fragmented forests of the Kinabatangan Wildlife Sanctuary in Sabah, Malaysia. Benoit Goossens, Lounès Chikhi,

Michael Bruford, and their colleagues report that the collapse occurred within the past hundred years, and most likely within the past decades--coinciding with massive deforestation, which began in the region in the 1890s and accelerated in the 1950s and 1970s.

"This is the first time that a recent and alarming decline of a great ape population--brought about by man--has been demonstrated, dated, and quantified using genetic information," says Goossens, a wildlife geneticist at Cardiff University who conducted the genetic study. "Developing effective conservation and recovery programs depends on determining when the decline of a population began, its trajectory, and the original population size."

For their study, the researchers collected hair from tree nests and feces found under nests or near orangutans encountered along the Kinabatangan River. Two hundred orangutans were identified using genetic markers called microsatellites. "We used the DNA information to simulate population history and detect evidence of a population decline," Goossens explains.

"The genetic study shows that there is a high risk of extinction of the orangutan in Sabah in the near future if this decline goes on unabated," says Marc Ancrenaz, who also participated in the study. "The major threat to the long-term survival of orangutans in Sabah is linked with oil palm plantation development and forest destruction. Illegal killing also contributes to this decline."

Sixty percent of orangutans found in Sabah are living outside the network of protected areas. "The largest population of the East Bornean orangutan subspecies existing on Earth occurs in the forests of the Sabah Foundation con cession, with a population of about 5,000 individuals," says Laurentius Ambu, Sabah Wildlife Department's Deputy Director. Most of these forests are exploited for timber under natural forest management, but orangutans cannot survive in industrial tree plantations.

"This population will disappear forever if these forests are converted to oil-palm agriculture," Ambu says. "The results of our genetic study underscore the need to act now to protect the long-term survival of the species. The animals still show enough genetic diversity to stabilize, if immediate steps are taken to reconnect remnant forest patches and halt further deforestation."


'"/>

Source:Public Library of Science


Related biology news :

1. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
2. Genetically modified natural killer immune cells attack, kill leukemia cells
3. Ants Genetic Engineering Leads To Species Interdependency
4. Genetic Variation Visualization - From EMBL
5. Genetically modified rice in China benefits farmers health, study finds
6. Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells
7. Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells
8. Genetic defects give the immune system the green light to attack the pancreas
9. Maine Researchers Find Exceptions to Old Rules of Genetic Inheritance
10. Genetic therapy reverses nervous system damage in animal model of inherited human disease
11. Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/3/2016)... 2016 Das DOTM ... Nepal hat ein 44 Millionen ... Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an ... und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale ... teilgenommen, aber Decatur wurde als konformste und ...
(Date:5/24/2016)... Calif. , May 24, 2016 Ampronix facilitates superior patient care by ... LMD3251MT  3D medical LCD display is the latest premium product recently added to the ... ... ... Sony 3d Imaging- LCD Medical Display- Ampronix News ...
(Date:5/3/2016)... , May 3, 2016  Neurotechnology, a ... the MegaMatcher Automated Biometric Identification System (ABIS) ... large-scale multi-biometric projects. MegaMatcher ABIS can process multiple ... using any combination of fingerprint, face or iris ... MegaMatcher SDK and MegaMatcher Accelerator , ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Global demand for enzymes is ... 2020 to $7.2 billion.  This market includes enzymes ... products, biofuel production, animal feed, and other markets) ... biocatalysts). Food and beverages will remain the largest ... consumption of products containing enzymes in developing regions.  ...
(Date:6/27/2016)...  Sequenom, Inc. (NASDAQ: SQNM ), a ... the development of innovative products and services, announced today ... States denied its petition to review decisions ... U.S. Patent No. 6,258,540 (",540 Patent") are not patent ... Supreme Court,s Mayo Collaborative Services v. Prometheus Laboratories decision.  ...
(Date:6/27/2016)... ... 27, 2016 , ... Parallel 6 , the leading software as a ... Reach Virtual Patient Encounter CONSULT module which enables both audio and video telemedicine ... team. , Using the CONSULT module, patients and physicians can schedule a face to ...
(Date:6/27/2016)... , ... June 27, 2016 , ... ... for Amgen, will join the faculty of the University of North Carolina ... professor of strategy and entrepreneurship at UNC Kenan-Flagler, with a focus on the ...
Breaking Biology Technology: