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Larval Development Of The Coquina Clam, Donax Variabilis Say, With A Discussion Of The Structure Of The Larval Hinge On The Tellinacea, Paul Chanley

VIMS Articles

Adult specimens of Donax variabilis were spawned in the laboratory and the larvae reared to metamorphosis. Larval length increases from 70 p. to 340 p. during pelagic stages. Height is originally 10 p. to 15 μ. less than length. Height increases less rapidly than length and may be 50 μ. less than length at metamorphosis. Depth is originally 50 μ. less than length. It also increases more slowly than length and may be 150 p. to 170 μ. less than length at metamorphosis. Length of the hinge line is 50 μ. to 60 p.. Round umbos form when larvae are …