5. VERTICAL DISTRIBUTION AND MIGRATION
157
i
3-4
20 -
40 -
I
I
I
I
I
I
1200
1600
2000
0000
0400
0800
1200
Time of day
FIQ. 57. Vertical layering of size classes of Meganyctiphanes nowegica on 14-1 5 November,
1956 in the Firth of Clyde. The numbers associated with the lines refer to the size
classes, e.g. 3-4 mm. The numerals beside circles refer to the number of specimens of
each size class represented by that point. A, females ; B, males. (After Mauchline,
1960.)
d
20
40
60
80
100
120
140
I
I
I
I
I
I
I
1200
1600
2000
0000
0400
0800
1200
Time of day
FIQ. 57. Vertical layering of size classes of Meganyctiphanes nowegica on 14-1 5 November,
1956 in the Firth of Clyde. The numbers associated with the lines refer to the size
classes, e.g. 3-4 mm. The numerals beside circles refer to the number of specimens of
each size class represented by that point. A, females ; B, males. (After Mauchline,
1960.)