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Table 2 Main characteristics of the models fitted to describe the relationships between response (RX: mean time in X-odorized arm; in s) of American palm weevils in a 4-arm olfactometer and the dose of odor delivered (synthetic pheromone, kairomone: natural odor from fermented sugar cane and mixture of the two; in ng/s).

From: Evaluation and modeling of synergy to pheromone and plant kairomone in American palm weevil

Model main Features

Odor stimulus

  

Kairomone: (RK)

Pheromone: (RP)

Type

 

Logistic (sigmoid)

Sum of 2 exponentials

Maximum 1

 

MP

322 ± 26

MK

319 ± 32

Minimum 1

 

mP

145 (set)

mK

145 (set)

Parameters 1

 

a

1.386 ± 1.008

c

-0.01518 ± 0.00515

  

b

0.2449 ± 0.4100

d

-16.87 ± 13.40

Fit 2

r2

 

0.38

 

0.43

 

F

 

94.40

 

85.39

 

df

 

1,112

 

1,108

 

p-value

 

< 0.0001

 

< 0.0001

  1. 1 Constants of the models (a, b, c, d, minima: mx and maxima: MX) are given as mean ± 95% confidence intervals.
  2. 2 Fit parameters: r2 and the F test value with degrees of freedom (df) and associated probability (p-value).