Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Mammal Species Identified in Australia

25.11.2002


In the current crisis of global biodiversity loss, the discovery of new species is a welcome addition. But the recent finding that the mountain brushtail possum, an arboreal marsupial mammal of Australian wet forests, is actually made up of two species also poses new conservation challenges.





The new species is proposed in an article in the latest Australian Journal of Zoology (Volume 50, Issue 4), authored by Earthwatch-supported biologist Dr. David Lindenmayer (Australian National University) and colleagues. "Geographic dimorphism in the Mountain Brushtail Possum (Trichosurus caninus) - the case for a new species," describes how the northern and southern populations of the mountain brushtail possum are both morphologically and genetically distinct.

"This article represents the last 10 years of data on the genetics and morphology of mountain brushtails where we have worked on them," said Lindenmayer, principal investigator of the Earthwatch-supported Australia’s Forest Marsupials project. "We knew we had two species on our hands last year when we got the genetic data to add to the morphology data."


A hiker in the woods might not distinguish the two species, but northern mountain brushtails in the forests of New South Wales and Queensland have smaller ears, shorter feet, and a longer, brushier tail than those in Victorian forests to the south. Although there is variability in both populations, years of morphological data collected by Lindenmayer and colleagues confirm that these differences are statistically significant.

Genetic distances of 2.7% to 3% between the southern and northern populations of mountain brushtails further support their species status. Genetic data was collected last year when the scientists were investigating biological controls for the related common brushtail.

"We were trying to find a parasite or disease in mountain brushtail to help control closely related common brushtails, which are a serious pest in New Zealand," said Lindenmayer.

The article proposes calling the northern species the short-eared possum, reflecting its distinctly smaller ear, although it would retain the scientific name Trichosurus caninus. This is because the species was originally named using specimens from the northern population in the 1830s. The southern species will retain the common name, mountain brushtail possum, but gain a new scientific name, Trichosurus cunninghami.

Both mountain brushtail and short-eared possums require old-growth forests, where they live in the hollows of large dead trees, a habitat type that is increasingly threatened by intensive logging practices in Australia. The revelation that these animals represent two species means that their populations and ranges are effectively half as large as that of the original mountain brushtail.

"Our findings have major conservation implications, as the two new species need conserving more carefully," said Lindenmayer. "Conservation is needed for two species now, not one."

Earthwatch teams working with Lindenmayer continue to collect vital information on the habitat needs of mountain brushtail possums (Trichosurus cunninghami) in Victorian forsests. The discovery that this represents a new species with a more limited range makes their work even more critical.

Blue Magruder | EurekAlert!
Further information:
http://www.earthwatch.org

More articles from Life Sciences:

nachricht NYSCF researchers develop novel bioengineering technique for personalized bone grafts
18.07.2018 | New York Stem Cell Foundation

nachricht Pollen taxi for bacteria
18.07.2018 | Technische Universität München

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Machine-learning predicted a superhard and high-energy-density tungsten nitride

18.07.2018 | Materials Sciences

NYSCF researchers develop novel bioengineering technique for personalized bone grafts

18.07.2018 | Life Sciences

Why might reading make myopic?

18.07.2018 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>