| life history and population biology of adult acanthocephalus lucii (acanthocephala: echinorhynchidae). | the life history and population biology of adult a. lucii in perch, perca fluviatilis l., from the forth and clyde canal, scotland, was investigated during may 1979-september 1981. there was an annual cycle in the size of the parasite population; prevalence and abundance (+/- se) were highest during late spring and summer (70-90% and 14 +/- 4.3 to 16 +/- 5.6 worms/fish, respectively) but declined during late autumn and reached a minimum during winter (50-60% and 2.1 +/- 0.9 to 3.2 +/- 0.6 worms/ ... | 1988 | 3357106 |