Have you ever wondered how such a small animal can create one of the most precious materials in the world? Get ready to be fascinated by the incredible engineering of Bombyx mori!
🧠 Quick scientific clarification to impress at social gatherings: Despite its common name, the "silkworm" is not a worm at all... it's a caterpillar! More precisely, the larva of a moth with a single obsession: devouring mulberry leaves.
⏳ A fast life cycle (10 to 12 weeks):
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🥚 The egg: A wait of 7 to 10 days before the big awakening.
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🐛 Stages L1 to L5: In just 25 to 30 days, the caterpillar goes through 5 stages of intense growth. It grows visibly fast!
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🌀 Spinning: In only 2 to 3 days, it isolates itself to weave its cocoon.
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🦋 The moth: The complete metamorphosis that comes full circle.
⚡ The magic of stage L5 (An incredible feat):
Having reached its maximum size, this super-caterpillar secretes from its sericigenous glands a liquid substance (technically its saliva!) that instantly solidifies upon contact with air.
The result? A single continuous thread measuring between 300 and 900 meters! This protective cocoon (which houses the chrysalis) is harvested to obtain silk. To give you an idea: this thread is as fine as a human hair, but proportionally 5 times stronger than steel! 💪
Next time you touch silk, remember: it’s the masterpiece of a mulberry-loving caterpillar! 🍁
