Monzon R B, Cabrera B D, Cruz A C, Baltazar J C
Department of Parasitology, College of Public Health, University of the Philippines, Manila.
Southeast Asian J Trop Med Public Health. 1990 Dec;21(4):580-5.
Ascaris lumbricoides worm populations were studied from 150 Filipino children (0-14 years) dewormed with pyrantel pamoate (Combantrin) or oxantel-pyrantel pamoate (Quantrel). Populations were classified according to intensity of infection: very light, light, moderate or heavy. A total of 2072 adult worms were sexed (939 males and 1133 females) and weighed. Descriptive statistics on the weights obtained from each sex were derived and one-way ANOVA was performed to compare the mean weights among the 4 intensity classes. Linear regression analysis (individual worm weight versus total worm burden) was also employed to equalize the possible influence of host factors. Statistical analysis revealed that mean weights of both sexes were significantly different and decreased as worm burden increased. This strongly suggests that the "crowding effect" phenomenon may also apply to Ascaris lumbricoides, and not only to tapeworms, as reported in the literature.
对150名接受过噻嘧啶（复方驱虫灵）或奥克太尔-噻嘧啶（驱虫清）驱虫治疗的菲律宾儿童（0至14岁）体内的蛔虫种群进行了研究。根据感染强度对种群进行分类：极轻度、轻度、中度或重度。共对2072条成虫进行了性别鉴定（939条雄性和1133条雌性）并称重。得出了从每种性别获得的体重的描述性统计数据，并进行了单因素方差分析以比较4个感染强度类别之间的平均体重。还采用线性回归分析（单条蛔虫体重与蛔虫总负荷）来平衡宿主因素可能产生的影响。统计分析表明，两性的平均体重存在显著差异，并且随着蛔虫负荷的增加而降低。这有力地表明，“拥挤效应”现象可能也适用于蛔虫，而不仅适用于文献中报道的绦虫。
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