How Intertidal Gastropods Deal with Acidified Seawater
Amaral, V., Cabral, H.N. and Bishop, M.J. 2014. Prior exposure influences the behavioral avoidance by an intertidal gastropod, Bembicium aurantum, of acidified waters. Estuarine, Coastal and Shelf Science 136: 82-90.
The three researchers report "gastropods from acidified sites showed significantly higher activity in and more rapid migration out of acidified waters than out of reference waters," while "gastropods from reference locations showed a significantly weaker response to acidified water than those from acidified waters, and which did not significantly differ from their response to reference water."
Amaral et al. suggest that "both the migration of gastropods out of acidified waters and retraction into their shells serves to reduce exposure time to acidified waters and may reduce the impact of this stressor on their populations," while "the stronger response to acidification of gastropods from populations previously exposed to this stressor suggests that the response may be learned, inherited or induced over multiple exposures." And so they conclude that their study "adds to growing evidence that estuarine organisms may exhibit considerable physiological and behavior adaptive capacity to acidification."
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