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:4/18/2017)... 2017  Socionext Inc., a global expert in SoC-based imaging and ... the M820, which features the company,s hybrid codec technology. A demonstration ... Probe, Inc., will be showcased during the upcoming Medtec Japan at ... the Las Vegas Convention Center April 24-27. ... Click here for an ...
(Date:4/11/2017)... BEACH GARDENS, Fla. , April 11, 2017 ... identity management and secure authentication solutions, today announced ... contract by Intelligence Advanced Research Projects Activity (IARPA) ... for IARPA,s Thor program. "Innovation has ... onset and IARPA,s Thor program will allow us ...
(Date:4/6/2017)... -- Forecasts by Product Type (EAC), Biometrics, ... (Transportation & Logistics, Government & Public Sector, Utilities / ... Facility, Nuclear Power), Industrial, Retail, Business Organisation (BFSI), Hospitality ... looking for a definitive report on the $27.9bn Access ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back ... 8th June 2018 in San Francisco, CA. The Summit brings together current and former ... CEOs, board directors and government officials from around the world to address key issues ...
(Date:10/11/2017)... the Netherlands and LAGUNA HILLS, Calif. ... The Institute of Cancer Research, London ... use MMprofiler™ with SKY92, SkylineDx,s prognostic tool to risk-stratify patients ... trial known as MUK nine . The University of ... trial, which is partly funded by Myeloma UK, and ICR ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and ... of osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
Breaking Biology Technology: