Forget a box of chocolates and a dozen roses. When it comes to attracting a mate, the male sagebrush cricket brings a special nuptial gift to his partner. During copulation, these insect Romeos offer their Juliets a peculiar food gift: females chew off the ends of the males’ fleshy hind wings and ingest fluid that is seeping from the wounds they inflict.
However, once males have endured this "love bite," their chances of finding another partner are slim because they lack the energy to aggressively pursue other mates. It’s a classic case of sexual exhaustion. Why do the males permit females to wreak such damage on them during mating?
McMaster University psychologist Andrew Clark, who studied the crickets in co-operation with researchers from Illinois State University, says, "The primary benefit to males appears to be that wing feeding keeps the female occupied during the time it takes the male to transfer the sperm."
Julia Thomson | EurekAlert!
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
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In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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