Behavioral Responses of the Snail Lymnaea acuminata towards Photo and Chemo Attractants: A New Step in Control Program of Fasciolosis

Table 1

Acetylcholinesterase (AChE) activity in nervous tissue of snails L. acuminata exposed to visible monochromatic light (500 flux) source placed vertically in the center of aquarium at 15-minute exposure periods.

Monochromatic light (wavelength)	Light flux	Acetylcholinesterase (AChE) (μmol SH-hydrolyzed/minute/mg-protein)
		15-minute	Percent change
Violet (400)	500	0.89±0.07^∗	148.25
Blue (450)	500	1.46±0.06^∗	243.44
Green (510)	500	0.59±0.01^∗	98.33
Yellow (570)	500	1.03±0.01^∗	171.47
Orange (590)	500	1.38±0.01^∗	230.37
Red (650)	500	1.55±0.03^∗	258.33
Control (white light)	500	0.60±0.01	100.00
Control (no light)	500	0.57±0.01	—

Each value is the mean of six replicates. Enzyme activity is expressed as μmol SH-hydrolyzed/minute/mg-protein. Percent change in activity is calculated with respect to control (white light).
*Significant when student 𝑡-test was applied between the intensity of visible monochromatic light and control value.