«I think it's premature to say that they have proved the position of tunicates,» says Billie Swalla, an evolutionary developmental biologist at the University of Washington, Seattle. (sciencemag.org)
During dry years, when bay waters remained salty, one invader dominated above all others: the invasive tunicate Ciona robusta. (sciencedaily.com)
But when the wetter winters of 2006 and 2011 hit, Ciona and other solitary tunicates like it were unable to cope with the massive influxes of freshwater. (sciencedaily.com)