CESTOID ADAPTATION TO LIFE CHCLES

There are two groups of cestod adaptations. One of them makes it possi ble for particular developmental stages to be adapted to their particu lar environment (including second order environment). The second one i nvolves passing through the entire life circle: transition from one en vironment to another, releasing from protective shells, host intrusion , population density regulation at different developmental stages. Spe ctrum of adaptive reactions on the life CHles is determined by peculia rities of parasite systems.