Fig. 2
High temperature and salinity impair the fitness of Aurelia aurita polyps. (A) Photographs of typical polyps for each treatment after 14 d. Scale bars correspond to 1 mm. (B) Percentages of dead (dissolved body, no mechanical stimulus triggering) and alive polyps (90 biological replicates) based on polyps’ phenotypical appearance and presence of tentacles. Monitoring was conducted each 48 h, and accumulative numbers are shown after 14 d. (C) The growth of polyps was followed every 48 h for 14 d by measuring the polyp size (length times width) of live polyps. Mean start sizes (υ, legend at the right) and the corresponding growth rates (%, legend at the left) are plotted, and error bars depict the standard deviations. (D) Feeding rate (% clearance of 20 Artemia salina in 1 h) plotted as mean of single polyps of five monitoring days