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Fig. 1. Carcinus maenas. (A) Variations in hemolymph osmolality in
selected stages of development in relation to the osmolality of the external
medium at 18°C; diagonal dashed line, isoconcentration. (B) Variations in
osmoregulatory capacity (OC) at different stages of development in relation to
the osmolality of the external medium; different letters near error bars
indicate significant differences between stages at each salinity
(P<0.05). Values are means ± S.D.;
N=4-11 individuals. ZI-ZIV, zoeal stages; Meg, megalopa; CI and CII,
earliest crab stages obtained from laboratory cultures; Juv, larger juveniles
(14-18 mm carapace width) collected in the field.