The Role of AChE in Swimming Behavior of Daphnia magna: Correlation Analysis of Both Parameters Affected by Deltamethrin and Methomyl Exposure

Table 3

Statistical analysis of whole-body AChE activity (% of control) and behavior strength in different behavior responses.

Treatments

No effects and stimulation

Acclimation

(Re)adjustment

Toxic effect

Start time (h)

AChE activity

Behavior strength

Start time (h)

AChE activity

Behavior strength

Start time (h)

AChE activity

Behavior strength

Start time (h)

AChE activity

Behavior strength

13.3 μg/L-DM

0.0

6.0

/

/

/

33.40 μg/L-DM

0.0

3.0

16.0

19.66 μg/L-MT

0.0

5.0

/

/

/

49.15 μg/L-MT

0.0

1.0

21.0

Control

0.0

/

/

/

/

/

/

/

/

/

Compared with control and ; for different stages based on the Stepwise Behavior Response Model: period before the first significant decrease of behavior strength (SD-BS) occurred (20% [13]); the first SD-BS until the first adjustment (20% behavior strength increase); the first adjustment to toxic effects; ing from the time when behavior strength of D. magna is lower than 0.2 and there is no recovery. AChE activity data of immovable individuals in different treatments were not shown in the table.