3.2. Comparison of holding types and duration
Delayed mortality for our study occurred for 33 crab during holding in the on-board tanks, followed by 4 crab in the laboratory tank and 3 crab in the at-sea cages (68% of held crab survived until the end of the study). In the laboratory setting, deaths occurred for up to 12 days (total holding, including in on-board tanks). However, 86% of all mortalities occurred within the first day of holding, and 92% within the first two days. Score-zero crab died at a slower rate than crab with higher Scores (Fig. 2). Of the six Score-zero crab that died in holding, three were held in on-board tanks and died after one day of holding, and three died in the laboratory tank after 2, 3, and 12 days of total holding. In the at sea cages, three crab died (Scores 1, 2, and 6), and none were Score-zero. Days until death for crab held in the at-sea cages could not be determined. Moreover, the three crab that were found dead in the at-sea cages had been consumed by amphipods. Without video footage it was not possible to verify whether these crab died from fishing stressors before predation commenced. However, we made the assumption that the mortality occurred before predation given that only crab with Scores greater than zero were eaten.