Abstract
Minutes after emerging from its egg, the tiny Hawaiian bobtail squid begins a remarkable symbiosis. The squid sucks a tiny amount of seawater into a cavity in its mantle, and with it, a cell or two of the bacterium Vibrio fischeri. The V. fischeri then “tell” the squid to create biochemical conditions that wipe out competing bacteria and to build an organ where the V. fischeri can live. “The bacteria sort of go in and close the door behind them,” says Margaret McFall-Ngai, director of the Pacific Biosciences Research Center at the University of Hawaii, who has uncovered the details of this intimate partnership over decades of research.
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