Fig. 6. Carbonic anhydrase activity (A; µmol CO2 mg
protein1 min1) and mRNA expression (B;
relative amounts) in anterior (G4, black bars) and posterior (G8, gray bars)
gills of green crabs acclimated to 32 p.p.t. and transferred to 10 p.p.t. for
4 days. Values are means ± s.e.m. (N=6). T=12°C.
Asterisks indicate statistical differences in G8 at P<0.05.