Table 3.

Details of movement behaviours exhibited over 24 h by hatchery and wild scallops. Standard error of the mean are provided for measured values.

	duration of one cough (s)	duration of one dig (s)a	number of digs and time to create one self-formed depression in sediment	duration of one turn (s)	duration of one spinning event (s)	duration of one swim (s)
hatchery scallop mean ± s.e.m.	0.31 ± 0.03	0.26 ± 0.01	22 ± 3 (29 min ± 8)	0.22 ± 0.01	1.44 ± 0.08	n.a.
wild scallop mean ± s.e.m.	0.32 ± 0.03	0.25 ± 0.01 (n = 8)	18 ± 2 (25 min ± 7) (n = 8)	0.24 ± 0.01 (n = 9)	n.a.	5.04 ± 0.14 (n = 2)
	number of cough events per day	number of digging adduction events per day	number of self-formed depressions made per day	number of turn events per day	number of spinning events per day	number of swims per day
hatchery scallop mean ± s.e.m.	69 ± 10	181 ± 58	8 ± 3	30 ± 6	25 ± 4	0
wild scallop mean ± s.e.m.	233 ± 39	36 ± 9	2 ± 1	13 ± 4	0	0.2 (i.e. <1) ± 0

^aOne rapid valve adduction associated with digging.