Figure 2

Comparison of the survival times for three treatments. [1] impermeable membrane (red bar), [2] oil layer (blue bar), [3] surfactant (yellow bar). The error bar represents the standard deviation (*P < 0.05, **P < 0.05, n = 5).

Comparison of the survival times for three treatments. [1] impermeable membrane (red bar), [2] oil layer (blue bar), [3] surfactant (yellow bar). The error bar represents the standard deviation (*P < 0.05, **P < 0.05, n = 5).