
ALT Fig. 1Behavioral difference of California blackworms in two oxygen environments. (A) An individual L. variegatus (California blackworm). (B) A worm blob consisting of 12 individual blackworms. (C) 1 g of blackworms in a 20 mL glass vial at high dissolved oxygen (DO) level (8.3 ± 0.3 mg/L). High DO levels induce stress among blackworms and they create a spherical-shaped structure. The oxygen sensor is affixed on the left side of the container and the temperature sensor is inserted through the cap from above. The vial is filled with distilled water. (D) In 30 min, DO reaches very low levels of 0.9 ± 0.5 mg/L. At this point, tail reaching behavior is pervasive to supplement respiration. (E) Average DO as a function of time. Shaded region corresponds to standard deviation with n= 7 individual trials. (Supplementary Movie S1).















