368
CHARLES J. KREBS AND JUDITH H. MYERS
INCREASE PHASE
EXTREME
* o l4-d4+
3 ‘ 1 1 , , g , .
W
T .
, , , .
I 2 3 4 5 6
s o
LL
84
a
4 L
1 2 3 4 5 6
PEAK PHASE
EXTREME
0
2
W
3
0
W
LL
a
DECLINE
8
4
0
PHASE
i4
4 L
1 2 3 4 5 6
FIG. 40. Sample aggressive behavior profiles for 12 Microtw pennaylvanicus
males showing behavior typical of increase, peak, and decline phases, with
extreme cases shown at right. Frequency recorded in 10 min bouts. (After
Krebs, 1970.)
CHARLES J. KREBS AND JUDITH H. MYERS
INCREASE PHASE
EXTREME
* o l4-d4+
3 ‘ 1 1 , , g , .
W
T .
, , , .
I 2 3 4 5 6
s o
LL
84
a
4 L
1 2 3 4 5 6
PEAK PHASE
EXTREME
0
2
W
3
0
W
LL
a
DECLINE
8
4
0
PHASE
i4
4 L
1 2 3 4 5 6
FIG. 40. Sample aggressive behavior profiles for 12 Microtw pennaylvanicus
males showing behavior typical of increase, peak, and decline phases, with
extreme cases shown at right. Frequency recorded in 10 min bouts. (After
Krebs, 1970.)