Royal Society Open Science

In the latest in a series of studies showing how lab-raised fish differ from those raised in more natural environments, researchers found that medaka maintained in more natural settings ovulated earlier than those in the laboratory. These findings highlight the challenges of inferring natural behavior from that observed in the laboratory.

Researchers from The University of Osaka have developed a mathematical model for Volterra defects using differential geometry to analyze the relationships between different types of defects. Their work provides insight into the connections between edge dislocations and wedge disclinations and extends traditional theories in material science. Their results may help to explain the unusual mechanical properties of crystals so they can be used to design new materials.

Researchers at Osaka University show that Cartan's First Structure Equation, which relates to edge and screw dislocations in crystal lattices, can be recast in the same form as a basic mathematical formula that governs the behavior of electric currents and magnetic fields. This work can help make new concepts more understandable by employing more familiar frameworks.

Intimate insights into relationship between cost of gamete production and sexual selection

National Taiwan University study finds that burying beetles thrive on both lab and wild carcasses, validating lab studies on their behaviour, ecology, and evolution.

A collaboration between Osaka City University and Setsunan University sheds light on the effect urbanization has on the flesh fly species Sarcophaga similis. Through a series of laboratory and in-field experiments, scientists show that an increase in nighttime illumination and temperature, two of the major characteristics of urbanization, can postpone S. similis hibernation anywhere from 3 weeks to a month.