Pieris butterflies are not like all other butterflies. Both sexes agree about sex. In a dissertation about olfactory communication, Johan Andersson, a scientist at the Royal Institute of Technology in Stockholm (KTH), Sweden, presents exciting new findings about a joint effort that provides an alternative view of the theory of sexual selection.
The Western man gives his partner an engagement ring when he wants to show the world that this woman is spoken for. When mating, the male white-winged rape-seed butterfly instead gives his partner methyl salicylate-a turn-you-off odor that serves the same purpose. The next male butterfly needs only a second to realize that the race is run and flies on to the next female.
The idea of a so-called anti-aphrodisiac has been known for some time, but it is only now that it is possible to show how the system works in its entirety, exactly what substances are involved and above all that the whole thing is a collaborative effort between male and female and not a conflict.
Jacob Seth-Fransson | alfa
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At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
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Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
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