Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

More news in the battle between the sexes

25.05.2004


By employing experimental evolution to study the effects of mating within and between different insect populations, researchers have gained insight into the ways in which sexual selection can affect fitness and influence various aspects of evolutionary change.



As a consequence of investigating the short-term fitness consequences of mate choice, researchers had largely come to believe that sexual selection is beneficial. However, conflicts between the sexes are ubiquitous and could erode fitness. Although sexual conflict is widespread, its evolutionary consequences remain largely unknown.

In the new study, which broadens our understanding of sexual selection and sexual conflict, Oliver Martin and David Hosken from the University of Zürich subjected flies to experimental evolution for 44 generations and looked at the fitness consequences of evolving under high, low, or relaxed sexual conflict. Their results indicate that foreign males from the conflict populations are more costly to females than familiar males and that sexual selection can be costly to fitness. However, they also found that at intermediate levels of sexual conflict, benefits of sexual selection may outweigh these costs.


These findings support previous work indicating that sexual conflict can cause rapid population divergence, although the proximate mechanism(s) involved remains unknown. Additionally, this work highlights the fact that sexual selection can be costly and generate a fitness load.


Oliver Y. Martin and David J. Hosken: "Reproductive Consequences of Population Divergence through Sexual Conflict"

Published in Current Biology, Volume 14, Number 10, May 25, 2004.

Heidi Hardman | EurekAlert!
Further information:
http://www.cell.com/

More articles from Life Sciences:

nachricht Superresolution live-cell imaging provides unexpected insights into the dynamic structure of mitochondria
18.02.2020 | Heinrich-Heine-Universität Düsseldorf

nachricht Blood and sweat: Wearable medical sensors will get major sensitivity boost
18.02.2020 | Moscow Institute of Physics and Technology

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Freiburg researcher investigate the origins of surface texture

Most natural and artificial surfaces are rough: metals and even glasses that appear smooth to the naked eye can look like jagged mountain ranges under the microscope. There is currently no uniform theory about the origin of this roughness despite it being observed on all scales, from the atomic to the tectonic. Scientists suspect that the rough surface is formed by irreversible plastic deformation that occurs in many processes of mechanical machining of components such as milling.

Prof. Dr. Lars Pastewka from the Simulation group at the Department of Microsystems Engineering at the University of Freiburg and his team have simulated such...

Im Focus: Skyrmions like it hot: Spin structures are controllable even at high temperatures

Investigation of the temperature dependence of the skyrmion Hall effect reveals further insights into possible new data storage devices

The joint research project of Johannes Gutenberg University Mainz (JGU) and the Massachusetts Institute of Technology (MIT) that had previously demonstrated...

Im Focus: Making the internet more energy efficient through systemic optimization

Researchers at Chalmers University of Technology, Sweden, recently completed a 5-year research project looking at how to make fibre optic communications systems more energy efficient. Among their proposals are smart, error-correcting data chip circuits, which they refined to be 10 times less energy consumptive. The project has yielded several scientific articles, in publications including Nature Communications.

Streaming films and music, scrolling through social media, and using cloud-based storage services are everyday activities now.

Im Focus: New synthesis methods enhance 3D chemical space for drug discovery

After helping develop a new approach for organic synthesis -- carbon-hydrogen functionalization -- scientists at Emory University are now showing how this approach may apply to drug discovery. Nature Catalysis published their most recent work -- a streamlined process for making a three-dimensional scaffold of keen interest to the pharmaceutical industry.

"Our tools open up whole new chemical space for potential drug targets," says Huw Davies, Emory professor of organic chemistry and senior author of the paper.

Im Focus: Quantum fluctuations sustain the record superconductor

Superconductivity approaching room temperature may be possible in hydrogen-rich compounds at much lower pressures than previously expected

Reaching room-temperature superconductivity is one of the biggest dreams in physics. Its discovery would bring a technological revolution by providing...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

70th Lindau Nobel Laureate Meeting: Around 70 Laureates set to meet with young scientists from approx. 100 countries

12.02.2020 | Event News

11th Advanced Battery Power Conference, March 24-25, 2020 in Münster/Germany

16.01.2020 | Event News

Laser Colloquium Hydrogen LKH2: fast and reliable fuel cell manufacturing

15.01.2020 | Event News

 
Latest News

Movement of a liquid droplet generates over 5 volts of electricity

18.02.2020 | Power and Electrical Engineering

Powering the future: Smallest all-digital circuit opens doors to 5 nm next-gen semiconductor

18.02.2020 | Information Technology

Studying electrons, bridging two realms of physics: connecting solids and soft matter

18.02.2020 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>