Mucha K H, Huffman J E, Fried B
Department of Biological Sciences, East Stroudsburg, Pennsylvania 18301.
J Parasitol. 1990 Aug;76(4):590-2.
Of 8, day-old mallard ducklings, each fed 50 encysted metacercariae of Echinostoma trivolvis, 4 (50%) were infected 15-31 days postinfection (PI) with a total of 10 (2.5%) worms. The worms were attached loosely to the mucosa of the lower ileum and rectum-cloaca, and some were ovigerous by day 15 PI. Ducklings, 4-14 days old when fed encysted metacercariae, became infected with E. trivolvis adults, but ducks 150 days old were refractory to infection. Compared to our previous studies on experimental infections of echinostomes, mallard ducklings were less susceptible than golden hamsters to E. trivolvis.
8只1日龄的绿头鸭雏鸭，每只喂食50个棘口吸虫的囊蚴，在感染后15 - 31天，有4只（50%）被感染，共发现10条虫（2.5%）。这些虫松散地附着在下段回肠和直肠 - 泄殖腔的黏膜上，在感染后第15天一些虫已产卵。喂食囊蚴时4 - 14日龄的雏鸭感染了棘口吸虫成虫，但150日龄的鸭子对感染具有抗性。与我们之前关于棘口吸虫实验感染的研究相比，绿头鸭雏鸭比金黄仓鼠对棘口吸虫的易感性更低。
