Fig. 1 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)

Fig. 1. Hemolymph osmolality of three experimental groups (A–C) of Esanthelphusa dugasti (Gecarcinucidae) held for up to 9 days in deep 30 cm fresh water and in 22 and 30 ppt salt water. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = sub-adults; dark = juveniles; error bars = standard deviation. The x-axis shows the number of days that crabs were subjected to a particular salinity. A. Sub-adults in fresh water (n = 27 and 24, respectively). B. Juveniles in 22 ppt salt water (n = 25). C. Sub-adults (n = 22 and 8, respectively) and juveniles (n = 12) in 30 ppt water. Dark horizontal bar = salinity at which hemolymph is hyperosmotic to the external water.