highly significantP < 0.001
1) = −3.99, P < 0.001 and with ample food (8.00 ×10 −1 mg/L algae) plus or minus 1.11 ×10 −2 mg/L MPs was highly significant t (d.f. 1) = 4.59, P < 0.001 since there was no mortality in the treatment without MPs ( Table 3 ).