Larval development of Dicrocoelium dendriticum in Cernuella (Xeromagna) cespitum arigonis under controlled laboratory conditions.

摘要: The larval development of Dicrocoelium dendriticum (Digenea: Dicrocoeliidae) in experimentally infected Cernuella (Xeromagna) cespitum arigonis (Schmidt, 1853), a species mollusc important the epidemiology dicrocoeliosis Spain, has been studied. A total 948 specimens this mollusc, distributed five batches, were tested with individual doses 50 to 150 parasite eggs, obtained from sheep, after 4 days without food. After infection these molluscs and control kept an environmental simulation chamber at 20 degrees C, 50% relative humidity 7 h light per day. To detect parasite, minimum six examined every day 1 post-infection (p.i.). eggs D. eliminated molluscan faeces 48 post infection. percentages harbouring ranged between 17.53% 75%. Daughter sporocysts undifferentiated germinal masses occupying very reduced areas hepatopancreas observed p.i. period immediately following. 110 cercariae different stages found although slimeball emission was never observed.