Giangaspero M, Bahhady F A, Orita G, Gruner L
International Center for Agriculture Research in the Dry Areas (ICARDA), Aleppo, Syria.
Parasitol Res. 1992;78(7):594-7. doi: 10.1007/BF00936458.
Inhibition in trichostrongylids was studied in Awassi sheep in North-west Syria, which has cold winters and hot summers. On six occasions during a 1-year period, five ewes with natural helminth infections were slaughtered after being held in pens for 3 weeks. The percentage of inhibited larvae was lowest in January (6%); it increased during the spring to 76.7% in April and to 84.6% in June and then decreased during the autumn (57.1% in September, 26.1% in December). Inhibition occurred mainly during the early fourth stage in mucosa but was also observed during the late fourth stage in digesta. Teladorsagia circumcincta was the main species involved, but it seemed that this phenomenon also occurred in Marshallagia marshalli.
在叙利亚西北部的阿瓦西绵羊中研究了毛圆线虫的滞育情况，该地区冬季寒冷、夏季炎热。在一年中的六个时间点，将五只有自然蠕虫感染的母羊关在围栏中3周后宰杀。滞育幼虫的百分比在1月份最低（6%）；春季有所增加，4月份达到76.7%，6月份达到84.6%，然后秋季下降（9月份为57.1%，12月份为26.1%）。滞育主要发生在黏膜内的第四期早期，但在消化物中的第四期晚期也有观察到。环形泰勒虫是主要涉及的物种，但这种现象似乎在马氏马歇尔线虫中也会发生。
