It has been known for a number of years that removal of the eyestalks of decapod crustaceans disturbs the maintenance of the water balance of the animals during and after ecdysis (Scudamore, 1947; Carlisle, 1955; Passano & Jyssum, 1963; Bliss, Wang & Martinez, 1966). More recently it has been shown that ligaturing or removal of the eyestalks of crayfish (Procambarus clarkii) results in an increased urine output and this has been interpreted as indicating an increase in permeability to water at the body surface (Kamemoto & Ono, 1967). The semi-terrestrial crab Metopograpsus messor shows a similar effect (Kato & Kamemoto, 1969).
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Lockwood et al. (1973) studied this question.
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