Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nowhere to hide: Some species are unable to adapt to climate change due to their genes

07.09.2009
Species living in restricted environments such as the tropics may lack adequate variation in their genes and be unable to adapt to climate change, according to a new study.

Adaptation is a physiological or behavioural change that makes an organism better suited to its environment, and more likely to survive and reproduce. Because adaptations usually occur due to a change (or mutation) in a gene, species with a more varied set of genes to begin with, are likely to have a better basis for adaptation.

Professor Ary Hoffmann from the Centre for Environmental Stress and Adaptation Research (CESAR), Bio21 Institute, University of Melbourne says the new findings suggest specialist species have a fundamental evolutionary limit, and will be unable to respond to future climate changes.

The work was conducted by a team of Melbourne and Monash University researchers from CESAR, and will be published in the journal Science this week.

"Just as variety is the spice of life, the more varied a species' genetic make-up, the better arsenal it has to respond to change," says Professor Hoffmann.

Habitat specialists make up most of our earth's biodiversity, suggesting that this inability to adapt will affect many species including groups of insects, and potentially other groups including mammals and fish.

"This work is important because establishing the genetics linked to species distributions will be useful in assessing and predicting the evolutionary potential of species particularly under climate change. This may in turn assist in conservation efforts and identifying vulnerable groups."

The team used various species of the vinegar fly (Drosophila) as a model, examining different species that lived in tropical and more widely distributed environments. They revealed that the flies living in tropical conditions possessed a narrower set of genes for traits such as tolerance to drying (desiccation) and cold resistance, effectively preventing adaptation.

Although it is well-documented that species distributions become narrower towards the tropics, it was previously thought that all traits are highly variable. Instead the new study has found that a species' range is closely linked to its genetic variation for key traits.

"In essence, we now have a genetic explanation for why species are restricted."

For more information, pictures of vinegar fly species available:
Professor Ary Hoffmann
Centre for Environmental Stress and Adaptation Research (CESAR)
Bio21 Institute, University of Melbourne
Ph 0408 342 834
(03)83442282
Dr Nerissa Hannink
Media Office
University of Melbourne
Ph (03) 8344 8151
0430 588 055

Nerissa Hannink | EurekAlert!
Further information:
http://www.unimelb.edu.au

More articles from Life Sciences:

nachricht A novel socio-ecological approach helps identifying suitable wolf habitats
17.02.2017 | Universität Zürich

nachricht New, ultra-flexible probes form reliable, scar-free integration with the brain
16.02.2017 | University of Texas at Austin

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Biocompatible 3-D tracking system has potential to improve robot-assisted surgery

17.02.2017 | Medical Engineering

Real-time MRI analysis powered by supercomputers

17.02.2017 | Medical Engineering

Antibiotic effective against drug-resistant bacteria in pediatric skin infections

17.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>