Orientation in Plume
Insects:
5
10
20
30
40
50
75
100
150
200
Flight speed inside plume:
0.25
0.5
0.75
1
1.5
2
2.5
3
4
5
and outside:
0.25
0.5
0.75
1
1.5
2
2.5
3
4
5
Casting:
proportion:
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
oscillations:
1
2
3
4
5
6
7
8
9
10
Checks/cast:
1
2
3
4
5
6
7
8
9
10
© 2000 by John A. Byers
Wind speed minimum:
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
2
4
and maximum:
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
2
4
for orienting:
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
2
4
Maximum wind speed changes/minute
0
1
2
3
4
5
6
8
10
12
14
16
18
20
max. variation/change:
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
2
Insect angle of maximum turn: in plume
0
2
4
6
8
10
15
20
25
30
45
60
90
180
outside plume
0
2
4
6
8
10
15
20
25
30
45
60
90
180
Probability of orienting/move:
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
X x Y axes:
30 x 15
60 x 30
100 x 50
120 x 60
150 x 75
200 x 100
300 x 150
400 x 200
600 x 300
800 x 400
1000 x 500
Trap radius:
0.01
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.5
2
4
Plume length:
10
20
30
40
50
60
70
80
90
100
Plume angle: minimum:
10
20
30
40
50
60
70
80
90
maximum:
90
100
120
130
140
150
160
170
Maximum plume angle changes/min:
0
1
2
3
4
5
6
8
10
12
14
16
18
20
max. variation/change:
0
1
2
3
4
5
10
Plume width angle: minimum:
2
4
8
12
16
20
25
30
35
40
maximum:
2
4
8
12
16
20
25
30
35
40
Maximum plume width angle changes/min:
0
1
2
3
4
5
6
8
10
12
14
16
18
20
max. variation/change:
0
1
2
3
4
5
6
8
10
12
14
16
18
20
Number moves/time period:
60
120
180
240
300
600
1200
Number periods:
5
10
15
20
25
30
40
50
60
Orientation of Insects in Pheromone Plume
Byers, J.A. 1996. Temporal clumping of bark beetle arrival at pheromone traps: Modeling anemotaxis in chaotic plumes. Journal of Chemical Ecology 22:2133-2155.