Fig. 4 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)

Fig. 4. Hemolymph osmolality of three experimental groups (A–C) of Eosamon smithianum (Potamidae) held in shallow 2.5 cm water of different salinities for up to 13 days. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = subadults; dark = juveniles; error bars = standard deviation. The x-axis shows the number of days that crabs were subjected to a particular salinity. A. Adults (n = 20, 15, 15, 12, respectively) and juveniles (n = 10, 5, 3, respectively) in fresh water. B. Adults (n = 16, 12, 10, respectively), juveniles (n= 12, 6, respectively) and hatchlings (n=12) in 22 ppt salt water. C. Adults in 28 ppt. salt water (n = 22, 20, 18, respectively). Dark horizontal bar = salinity at which the hemolymph is hyperosmotic to the external water.