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:
Nerissa Hannink | EurekAlert!
Cancer diagnosis: no more needles?
25.05.2018 | Christian-Albrechts-Universität zu Kiel
Less is more? Gene switch for healthy aging found
25.05.2018 | Leibniz-Institut für Alternsforschung - Fritz-Lipmann-Institut e.V. (FLI)
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences