出典:Wikipedia
出典:『Wikipedia』 (2009/12/13 13:12 UTC 版)
Phytoecdysteroids are plant derived ecdysteroids. Phytoecdysteroids are a class of chemicals that plants synthesize for defense against phytophagous (plant eating)insects. These compounds are exact replicas of hormones used by the arthropod (insect) and crustacean (crab/lobster) families in the molting process known as ecdysis. When insects eat the plants with these chemicals they may prematurely molt, lose weight, or suffer other metabolic damage and die.