Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Molecular censusing doubles estimate of key giant panda population

20.06.2006
Employing a noninvasive technique that uses genetic information to identify individual pandas in the wild, researchers have revised--upward--size estimates of a key giant panda population in China. The research is reported in the June 20th issue of Current Biology by a team of scientists from China and the UK, including Fuwen Wei of the Institute of Zoology, Chinese Academy of Sciences and Michael W. Bruford of Cardiff University.

The giant panda is one of the world's most charismatic endangered species and has an emblematic status for the conservation movement worldwide. Its attraction stems in part from its elusive nature: A wary creature with an unusual dietary dependence on bamboos, it is now found only in a restricted mountainous region in China. These characteristics have also shielded important knowledge needed to save the panda from extinction.


Understanding population trends for giant pandas has been a major task for conservation authorities in China for the past thirty years, during which three increasingly sophisticated national surveys were carried out. The first two revealed alarming evidence for declines across the giant panda's range. However, the most recent survey, completed in 2002, showed the first evidence of a recovery, thanks largely to protection measures taken by the Chinese government, including support for a network of natural reserves and strictly enforced bans on poaching and deforestation.

Nonetheless, given the variable accuracy of traditional ecological census methods, other approaches to accurately estimating panda population size are needed. In the new work, the Chinese and UK researchers re-examined the ecological estimate for a key reserve population of giant pandas in Wanglang Nature Reserve. To boost the accuracy of their study, they used recently developed noninvasive techniques, including DNA sequence profiling from fecal samples, that have been successfully used for censusing wild animal populations. The researchers found that the most recent survey likely underestimated the giant panda population by more than 50%. Moreover, the population showed no genetic trace of a demographic "bottleneck" in the recent past, implying that the population may not have been diminished to such tiny numbers as commonly feared.

If these results were to be replicated in other key reserves (and the authors state that this is not unlikely), then there may now be many more giant pandas remaining in the wild than previously thought. This finding indicates that the species may have a significantly better chance of long-term viability than recently anticipated, and that this beautiful animal may have a brighter future.

Heidi Hardman | EurekAlert!
Further information:
http://www.current-biology.com

More articles from Life Sciences:

nachricht Climate Impact Research in Hannover: Small Plants against Large Waves
17.08.2018 | Leibniz Universität Hannover

nachricht First transcription atlas of all wheat genes expands prospects for research and cultivation
17.08.2018 | Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Smallest transistor worldwide switches current with a single atom in solid electrolyte

17.08.2018 | Physics and Astronomy

Robots as Tools and Partners in Rehabilitation

17.08.2018 | Information Technology

Climate Impact Research in Hannover: Small Plants against Large Waves

17.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>