A galling experience for a plant

gall ball.jpgGOLDENROD GALL BALL. Knock, knock, yes someone is home, snug in this goldenrod ball gall. A gall is an abnormal outgrowths of plant tissue caused by parasites, insects or mites.

A fruit fly causes this particular gall. Each gall contains a single plump larva, which overwinters Inside the gall.

The quarter-inch-long larva slows its metabolism and utilizes glycerol as an antifreeze. If undisturbed by predators, the larva tunnels to just short of the surface, goes back to the chamber to form a pupa, and emerges in a few weeks as an adult fly able to pop through the thin-walled porthole, clearly visible in the photo.

After all this, the adult Goldenrod Gall Flies do not eat and last only about ten days, living only to mate and produce a new generation of gall-causing young

Author: luzerne2112

As I get older -- and I'm 70 now -- I seem to find more and more that nature is the true source of peace, inspiration and, most of all, the truth the passeth understanding. Though my knowledge is sketchy and superficial, I wanted to share it while I can.

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