FIG. 3.

Water quality kinetics during immersion in the screening plate. (A) Dissolved oxygen over time within a single bout of immersion. Fish were fed 24 h (black circles) or 1 h (white squares) before experimentation. (B) Total ammonia over time within a single bout of immersion. Water was sampled from the same experiment as in (A). (C) Dissolved oxygen over multiple bouts of immersion. Fish were immersed for 60 min/bout, and levels were measured before each bout. (D) Total ammonia over multiple bouts of immersion. Water was sampled from the same experiment as in (C). n = 3 for all experiments; please see Tables 1 and 2 for curve fits.