Resistance of Hookworm Larvae Part 2 Influence of Two Cholinergic Agents and Parathion on Hookworm Larvae

The author studied the influence of Atropine, Ace and Parathion on the larvae of Anchylostoma caninum mainly on the movement. The following are the results. 1) Both Atropine and Ace acted on the larvae as nerve toxic, and the former was more toxic than the latter. Both of 0.01% solution, however, prolonged the duration of the time of movement up to coming to standstill in comparison with the control. 2) Both Atropine and Ace relieved the symptom of Parathion poisoning in the larvae and prolonged the life. 3) There might be the acetylcholine-transmission in the impulseconductiön of the nervous system of the larvae, and the movement of the larvae might be intimately associated with the functions of the nervous system.