OUTPUT OF CERCARIAE OF FASCIOLA-HEPATICA BY LYMNAEA-TRUNCATULA AND DISTRIBUTION OF METACERCARIAE ON GRASS
OUTPUT OF CERCARIAE OF FASCIOLA-HEPATICA BY LYMNAEA-TRUNCATULA AND DISTRIBUTION OF METACERCARIAE ON GRASS
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DOI：
10.1017/s0031182000044644
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发表时间：
1972-01-01
期刊：
影响因子：
2.4
通讯作者：
HODASI, JKM
中科院分区：
文献类型：
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作者：
HODASI, JKM
已经证明，在正常实验室条件下，感染肝片吸虫的蒺藜形绦虫在死亡前不能排出全部尾蚴。尾蚴在较长的时间内不规则地释放，其产量发生相当大的变化（4-1789）。实验室研究表明，肝片吸虫尾蚴喜欢在草（鸭茅）的绿色部分而不是褐色的死亡部分形成囊蚴。结果表明，在沉水叶片下表面形成囊蚴的数量多于上表面，水体中草上的囊蚴有垂直分带现象。本文报道了在布里斯托的布里斯托大学动物系，在H. D.克罗夫顿，我想向他表示感谢。
It has been demonstrated that under normal laboratory conditions Lymnaea truncatula infected with Fasciola hepatica are not able to shed all their cercarial loads before their death. Cercariae are irregularly released over an extended period and considerable variations (4–1789) occur in their output.Laboratory studies have revealed that the green parts of grass (Dactylis glomerata) are preferred to the brown, dead parts by the cercariae of Fasciola hepatica for metacercariae formation. More cysts are formed on the lower surface of submerged leaves than on the upper surface.There is vertical zonation of metacercariae on grass in water. More cysts occur on the upper parts of submerged grass than on the lower parts.Vertical migration of cercariae after settling does not usually occur before cyst formation.The results are tabulated and discussed and correlated with conditio s in the field.This work was undertaken in the Department of Zoology, University of Bristol, Bristol, under the supervision of Dr H. D. Crofton, to whom I wish to express my gratitude.