David Johnson was standing in a salt marsh tidal creek north of Boston, Mass., when he scooped up a blue crab, Callinectes sapidus, 80 miles north of its native range. The northern migration of this ...
Systematics and evolution / Austin B. Williams -- External anatomy of blue crab larvae / Victor S. Kennedy -- Anatomy of the post-larval blue crab / Victor S. Kennedy and L. Eugene Cronon -- Muscles ...
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