17 Years Underground. Just to Get Eaten.

Why do periodical cicadas spend 17 years underground only to emerge all at once? The 17-year cicada has one of nature’s strangest life cycles. Periodical cicadas (Magicicada) spend 13 or 17 years underground before millions — sometimes billions across an emergence region — appear within just a few weeks. In this episode of Bioweirdly, we explore why periodical cicadas emerge at the same time, the prime-number hypothesis behind their 13- and 17-year cycles, predator satiation, and the mysterious biological clock that may allow cicada nymphs to keep track of years underground. We also meet Massospora cicadina, the infamous zombie cicada fungus that infects periodical cicadas, replaces part of their abdomen with spores, and can alter their behavior while they continue trying to mate. 17 years underground. Billions emerging together. Just weeks to reproduce. And if a few weeks sounds short, the next video follows a solitary bee that comes home to find her nest gone. More strange biology, weird insects, animal survival strategies, parasites, and evolutionary adaptations every week on Bioweirdly. ______________________________________________________________________ CHAPTERS 00:00 The 17-Year Wait 01:26 Life Underground 03:23 Why 13 and 17 Years? 06:48 The Clock Scientists Can't Find 08:49 The Fungus That Waits 17 Years 11:19 The Few Weeks That Matter 12:43 Why the Wait Is the Strategy 13:35 What to Watch Next ______________________________________________________________________ #periodicalcicada #17yearcicada #cicada #magicicada #weirdbiology #animal behavior #cicada emergence