In a new study forthcoming in the April 2006 issue of The American Naturalist, Peter Nonacs (University of California – Los Angeles), Aviva E. Liebert (Tufts University) and Philip T. Starks (Tufts University) explore a theory of social behavior that seeks to explain why some individuals willingly sacrifice their own reproduction to help raise others offspring.
"Transactional Skew" (TS) theory proposes that such cooperation is possible through "shared reproduction," making it worthwhile to help close relatives because some of the same genes are getting passed along. Thus, the degree of shared reproduction should vary across groups by the degree to which they are related.
However, in a study across four species of paper wasps – long considered one of the best examples supporting this theory – the researchers found that not only was there cooperation and shared reproduction between sisters but also between distantly related or unrelated wasps.
Suzanne Wu | EurekAlert!
Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
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16.08.2018 | Earth Sciences
16.08.2018 | Life Sciences