They do not produce motile spores at any stage of the life cycle. 在生活史的各阶段都不发育产生游动孢子。
These motile spores may encyst in adverse conditions or may be the means by which a fungus or parasitic protoctist penetrates a new host. 在不利环境中,游动孢子被包在囊内,当真菌或寄生的原核细胞穿透新寄主时游动孢子被释放出来。