Here, the cercariae encyst in the muscle tissue. The metacercariae encyst in smaller fish, sometimes in the nervous system. Once in the muscle, they encyst, or become enclosed in a capsule. Within a few minutes, this zoospore will encyst, germinate and release another zoospore. In the absence of food, "D. nasutum" will encyst, lying dormant within a protective coating. Zoospores swim in water droplets until they encyst and infect the fruit. In the lung, the parasites encyst and cross fertilize each other. These larvae then encyst within the musculature of the new host. "N. fowleri" has been found to encyst at temperatures below . As a result, large numbers of metacercariae encyst near the base of the hind legs. In their juvenile stages, they infect and often encyst in the intermediate host. Trophozoites multiply and encyst due to the dehydration of feces. The crawling cercariae penetrate fresh water crabs and encyst in its muscles becoming metacercaria.