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Cannibalism helps comb jellies survive harsh conditions, invade new environs

Cannibalism helps comb jellies survive harsh conditions, invade new environs

Science
May 8 (UPI) -- The warty comb jelly, or sea walnut, is native to the coastal waters of the western Atlantic, but in recent decades, the gelatinous invertebrate has invaded the waters of Eurasia. New research -- published this week in the journal Communications Biology -- suggests cannibalism is key to the species' ability to move into new environs. "We had this species arrive in the Black Sea in the 80s, and it arrived in the Caspian Sea in the 90s," Jamileh Javidpour, lead author of the new study and a professor of marine biology at the University of Southern Denmark, told UPI. "So it showed the ability to spread very fast over a diversity of ecosystems." Most recently, the warty comb jelly, Mnemiopsis leidyi, has made its way to the Baltic Sea. Previous studies have identified a corre...
Virus outbreak delivers tech darlings a harsh reality check

Virus outbreak delivers tech darlings a harsh reality check

Technology
Just as the coronavirus outbreak has boxed in society, it’s also squeezed high-flying tech companies reliant on people’s freedom to move around and get togetherBy BARBARA ORTUTAY, DEE-ANN DURBIN and MICHAEL LIEDTKE The Associated PressApril 8, 2020, 7:16 PM5 min read5 min read Just as the coronavirus outbreak has boxed in society, it’s also squeezed high-flying tech companies reliant on people’s freedom to move around and get together. Since the beginning of March, for instance, Uber shares have lost a quarter of their value. Rival Lyft is down 28 percent. Over the same period, the S&P 500 has fallen just 10 percent, even with wild swings along the way. The picture is even less clear for other, still-private “unicorn” companies once valued at more than $ 1 billion, such as Airbnb and W