Retention is high even for
early diapausers
85.0
72.5
80.3
73.8
56.1
61.8
1 Sept
85.4
64.0
81.9
63.4
44.4
52.7
1 July
89.6
57.9
82.1
55.8
35.7
45.7 %
1 May
fixed-
depth
passive
fixed-
depth
passive
fixed-
depth
passive
Start time
200 m
150 m
100 m
Initial depth and behavior
A four month difference in entry time changes retention by at most about 20%