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The Entomologist’s Diary – Episode 16: Chemical Alchemy – How Insects Detoxify Poisons 🐞🧪⚗️

Today, I delved into the fascinating world of insect metabolism and their ability to detoxify harmful chemicals. Many insects feed on toxic plants or live in polluted environments yet survive by transforming poisons into harmless substances. A key player is a family of enzymes called cytochrome P450 monooxygenases. These enzymes…


Today, I delved into the fascinating world of insect metabolism and their ability to detoxify harmful chemicals. Many insects feed on toxic plants or live in polluted environments yet survive by transforming poisons into harmless substances.

A key player is a family of enzymes called cytochrome P450 monooxygenases. These enzymes add oxygen atoms to toxic molecules, making them more water-soluble and easier to excrete. This process is similar to how humans metabolize drugs in the liver.

For instance, the cabbage white butterfly caterpillar feeds on plants containing mustard oils (glucosinolates). Its metabolism modifies these compounds, reducing their toxicity.

In my notebook, I scribbled:
“Insects are master chemists, turning threats into survival tools.”

This detoxification ability also helps explain how some pests develop resistance to chemical insecticides — a challenge for agriculture.

Tomorrow, I will explore the fascinating chemistry behind insect pheromones used for mating and social organization.


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