| |
Intensified foraging effort
|
Transit
|
|---|
|
N PrCA/segment
|
|
High resolution
|
2.5 ± 0.02
|
0.6 ± 0.007
|
|
Low resolution
|
3.9 ± 0.04
|
0.9 ± 0.01
|
|
PrCA rate (n/min of segment duration)
|
|
High resolution
|
1 ± 0.007
|
0.3 ± 0.003
|
|
Low resolution
|
0.6 ± 0.006
|
0.2 ± 0.003
|
|
% of total PrCA
|
|
High resolution
|
77
|
23
|
|
Low resolution
|
68
|
32
|
- Number of prey capture attempts (PrCA) and rate of PrCA per segment according to the foraging behaviour (i.e. hunting or transit) associated with the corresponding segment (mean ± SE from data pooled for the two SES). Percentages of total PrCA were calculated on the whole dataset for both resolutions independently. Hunting phases of high-resolution dives (vertical sinuosity <0.9) and low-resolution dives (segments associated with vertical velocity ≤0.4 m s−1) indicate parts within a dive where a seal intensifies its foraging behaviour
