Studies on the rate of development and viability of the eggs of Ascaris lumbricoides and Trichuris trichiura under field conditions
Studies on the rate of development and viability of the eggs of Ascaris lumbricoides and Trichuris trichiura under field conditions
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DOI：
10.2307/3271397
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发表时间：
1927-01-01
期刊：
影响因子：
--
通讯作者：
BROWN, HAROLD W.
中科院分区：
文献类型：
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作者：
BROWN, HAROLD W.
将含有这些寄生虫卵的粪便（在巴拿马）放在阳光和阴影下的沙子、壤土、粘土和腐殖土上，并定期隔离以确定胚胎发育的速度。实际上，所有培养物在15天内都含有蛔虫卵。一些培养物在21天内含有带胚鞭虫卵。卵的发育速度部分受土壤类型的控制;所有卵（蛔虫和鞭虫）在桑迪土壤中培养，在阳光下，在达到感染阶段之前退化;在腐殖土中的卵的发育比在其他土壤培养中的卵晚3周。美国南部的温度和土壤数据。S. A.表明这些发现可能适用于该领域的部分。|| 摘要注释：作者（由Wistar Bibl提供。服务。）
Feces containing the eggs of these parasites were placed (in Panama) on sand, loam, clay, and humus soils in both sun and shade and periodic isolations made to determine the rate of embryonic development. Practically all cultures thus made contained embryonated Ascaris eggs in 15 days. Some of the cultures contained embryonated Trichuris eggs in 21 days. Rate of development of eggs is controlled in part by the type of soil; all eggs (Ascaris and Trichuris) in sandy soil culture in the sun degenerated before attaining the infective stage; development of the eggs in humus soil was 3 weeks behind that of those in the other soil cultures. Temperature and soil data from the southern U. S. A. indicate that these findings may be applied to parts of this area. || ABSTRACT AUTHORS: Author (courtesy Wistar Bibl. Serv.)