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 Researchers identify potentially druggable mutant p53 proteins that promote cancer growth
09.12.2016 | Cold Spring Harbor Laboratory

nachricht Plant-based substance boosts eyelash growth
09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>