Table 1. Laboratory response indices (RIs) of plum curculio adults to individual odor compounds at three concentrations in solvent.

Compound
1%
0.1%
0.01%

Benzaldehyde
-28
-13
0

Benzonitrile
-29
-10
12

Biphenyl
-33
-10
-4

Diphenyl methane
-6
-8
19

Ethyl acetate
6
-6
13

Ethyl butyrate
15
6
8

Ethyl isovalerate
-4
13*
24*

2-Hexenal
-21
-17
-13

2-Hexanol
-4
8
8

3-Hexanol
0
0
-2

2-Hexanone
2
10
0

3-Hexanone
17
-10
-10

3-Hydroxy-2-butanone
-17
-6
-17

Isopropyl acetate
-13
-4
4

Limonene
-7
4
18*

Linalool
-27
-6
13

2-Pentanol
-2
13
0

2-Propanol
0
0
-4

* Significantly different from zero at odds of 19 to 1.

 

 

 

Table 2. Field response indices (RIs) of plum curculio adults to odor compounds at concentrations of 5 %. and 0.5% in mineral oil.

 

 

 

 

 

Compound

 

 

 

 

Experiment 1

(5%)

 

 

Experiment 2

 

 

5%

 

 

0.5%

 

 

Benzaldehyde

 

 

13

 

 

 

Benzonitrile

 

33

 

 

 

Biphenyl

 

-27

 

 

 

Diphenyl methane

 

0

 

 

 

Ethyl acetate

 

9

 

 

 

Ethyl butyrate

 

14

 

 

 

Ethyl isovalerate

 

71*

 

80*

 

50

 

2-Hexenal

 

8

 

 

 

2-Hexanol

 

-13

 

 

 

3-Hexanol

 

-67

 

25

 

20

 

2-Hexanone

 

-18

 

 

 

3-Hexanone

 

-39

 

 

 

3-Hydroxy-2-butanone

 

26

 

 

 

Isopropyl acetate

 

-13

 

 

 

Limonene

 

38*

 

100*

 

26

 

Linalool

 

10

 

 

 

2-Pentanol

 

-25

 

 

 

2-Propanol

 

-31

 

 

 

* Significantly different from zero at odds of 19 to 1.