Monday, September 10, 2018
Zombie Fungus rides again!
Laura Hughes, I believe, spotted the zombified orthopteran on a field trip to an Adams County, Ohio hotspot last Saturday. Never one to miss a chance to photo-document an attack of the zombie fungus, I took the opportunity to shoot some images of this fine example of a fate worse than death.
Apparently fungal spores land on and gain a beachhead on a suitable host, and then the fun begins. Fungal strands worm their way into the victim's core, and rapidly grow throughout the body, consuming the soft parts. Cleverly keeping the host alive as long as possible - if a fungus can be considered clever - the fungal siege grows in intensity. In a last hurrah, the fungus somehow rewires the cricket's brain to force it to act in an entirely unnatural way that is to the fungus's benefit.
Chemical commands from the fungus direct the cricket to climb to a prominent exposed perch, and once it's into a space exposed to breezes, the cricket - or whatever victim it may be - tightly seizes the substrate. In a horrifying grand finale, the fungal hyphae kills the cricket and caps its homicidal performance by shooting conspicuously elongate strands of hyphae from the host's body. Spores are released from pores at the summits of these hyphae and waft off on the wind. Some of these will find their way to other hosts and begin the zombification process anew.
I suppose we humans should be glad this sort of fungal attack has not yet made its way to Homo sapiens.