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Table l.--Mean ±S.E. area eaten by the forest tent caterpillar in leaf disks from tocopherol-elicited versus
control-elicited ash trees.
Behavioral Area eaten (cm2) b
response Days _ Treatment Control
Nonpreferred _ 8 0.18 _+0.04 "*c 0.41 + 0.04
Preferred 1_ 16 0.49 + 0.07* 0.31 + 0.06
Preferred 2d t6 0.46 + 0.05"" 0.16 + 0.04
Days after elicitation.
b From Markovic et al. (1993).
Vitamin E dose was 25.0 IU / ml.
d Vitamin E dose was 50.0 tU / ml.
Means followed by * or **are significantly different from their control at p < 0.05 and p < 0.01, respectively.
35000
30000
25000
R Non-preferred
a E! Control B
b a
W
¢ 20000 b
w 15000
a b
10000 b a
a
a
a a
5000 b a a
0
1 2 3 4 5 6 7 8
PEAK NUMBER
gure 3.--Comparative mean areas of the indicated peaks in the standardized HPLC analysis of the nonhydrolyzed fraction
of the ethyl acetate extractables from ash foliage. Data are for nonpreferred foliage (elicited with 25 IU / ml) and
control B foliage (elicited only with the solvent). Leaves were collected at 8 days after elicitation. Peak areas not
followed by the same letter are significantly different at p < 0.05.
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