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Massospora cicadina
''Massospora cicadina'' is a fungal pathogen; which infects imago of periodical cicadas; resulting in infertility and death.
==Life cycle==
Spores of ''M. cicadina'' are capable of germinating and infecting cicadas at as little as one year; but may remain dormant for either 13 or 17 years before becoming active. Cicadas first become infected by fungal spores as the nymphs prepare to leave the soil and become adults. Early stages of the infection are completely concealed inside the abdomen of the cicada. At or near the death of the host, the rear segments of the abdomen fall off, revealing a white, chalky mass of the fungus, which actively produces and forcibly discharges spores. These spores are infective to other periodical cicadas, and create a secondary cycle of disease. At the end of this secondary cycle, the fungus produces a different kind of spores, which have thick, ornamented walls and are not directly infective to adult cicadas; these spores lie dormant in soil. The fungus renders both males and females sterile, though they may remain alive and mobile while discharging spores. Affected males are not able to mate, while affected females can mate but cannot oviposit.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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