highly significantp < 0.01
Mytilus galloprovincialis Larvae Antisettlement Activity and Recovery Portoamides demonstrated a highly significant activity towards the settlement of the mussel Mytilus galloprovincialis plantigrades larvae for all the concentrations tested ( p < 0.01) when compared to the negative control, resulting in a complete inhibition of the larval settlement at a concentration of 32 μM, and an 50% response concentration (EC 50 ) value of 3.16 μM/4.86 μg·mL −1 ( Figure 1 ).