Redial productivity of Clinostomum complanatum (Trematoda: Clinostomatidae) within the snail host.

摘要: Studies have been conducted on the rediae of Clinostomum complanatum Rud., including problem intramolluscan productivity, their population structure and nature different generations. It has found that reproduction is marked by mass multiplication in first two generations: this ensures establishment a considerable size. The mother redia sole parent which produces daughter rediae. longevity about 12 days, with production period 5 days. Rediae second generation appear 7th-8th day start to propagate 3 days later. peak lasts for then shifts an entirely phase, cercarial production. majority third are producers, only few "mixed" important maintaining redial population. size maintains level over 1,000-2,500 individuals during from 39-59 polyembryony changes considered be attributable adaptation parasitic life digenetic trematodes.