Belosevic M, Dick T A, Chadee K
J Parasitol. 1981 Oct;67(5):692-6.
In vitro chemical attraction of Trichinella spiralis was studied using as migrators individual male or female worms. Both male and female worms exhibited a dose-dependent behavior at target doses of 20 to 80 worms, no significant differences in response at doses of 80 to 200 worms, and an inhibition of movement at doses of 200 to 400 worms. Single males were attracted less to a mixture of males and females as the source of pheromone than single males to a female source. Single females did not move significantly towards a mixture of males and females. Adult males and fourth-state, juvenile males were significantly attracted to fourth-stage females as the pheromone source. Fourth-stage males attracted adult females but not forth-stage juvenile females. Adult males and females and third-stage, juvenile males and females were not significantly attracted to a pheromone source from third-stage juvenile males and females. We postulate that the onset of pheromone production in T spiralis is during the fourth developmental stage.
利用单独的雄性或雌性旋毛虫作为游动体，对旋毛虫的体外化学吸引作用进行了研究。在目标剂量为20至80条虫时，雄性和雌性虫均表现出剂量依赖性行为；在80至200条虫的剂量下，反应无显著差异；而在200至400条虫的剂量下，运动受到抑制。与以雌性为信息素来源相比，单独的雄性对雄性和雌性混合物作为信息素来源的吸引力较小。单独的雌性对雄性和雌性混合物没有明显的趋向运动。成年雄性和第四期、幼年雄性对作为信息素来源的第四期雌性有显著吸引力。第四期雄性吸引成年雌性，但不吸引第四期幼年雌性。成年雄性和雌性以及第三期、幼年雄性和雌性对来自第三期幼年雄性和雌性的信息素来源没有明显吸引力。我们推测旋毛虫信息素产生的起始阶段是在第四发育阶段。
