
Cannibalism helps comb jellies survive harsh conditions, invade new environs
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...