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Bombyx mori life cycle11/12/2022 ![]() ![]() One cocoon will contain raw silk thread of 300 to 900 meters in length.Hint: Bombyx mori moth’s larva or the caterpillar is the silkworm.The salivary gland of the silkworm larvae produces the silk thread for the cocoon.Silkworms is the term used for the worms called Bombyx Mori.Normally silkworms reproduce only once a year but in countries like India and China they can do so round the year because of the weather.Thus the lifecycle of a silkworm begins again. Within 24 hours of mating a male moth dies while the female lays eggs and then even she dies. Once the adult moth comes out its sole purpose is to find a mate. These moths are flightless and do not have a mouth so they are unable to consume food. ![]() The pupa changes itself into a beautiful adult moth. But if they don’t the pupa rests peacefully for 2-3 weeks after which it metamorphoses into an adult moth. It is at this stage when people take the cocoon and plunge it into boiling water to kill the pupa and unwind the silk thread. This stage is the motionless stage just before adulthood. This is the stage where the second molt takes place when the lava turns into a pupa inside the cocoon. This, it does to protect itself from predators. It is made by a single thread of silk and it the size of a small cotton ball. Stage 3: CocoonĪt this stage the silkworm spins a protective cocoon around itself. The first molt is when the silkworm sheds all its hair and attains a smooth skin. They consume large amount of these leaves for 20 to 30 days and go through four stages of molt or skin changes. Upon hatching, a silkworm is 1/8th of an inch. ![]() This larva stage is the one where growth takes place. When the eggs crack there emerges a hairy silkworm. But due to human intervention the breeding of silkworm and hatching of eggs takes place at least thrice a year. These eggs remain dormant till springtime when the warmth in the air arouses them to hatch. The female moth lays eggs which are the size of a small ink dots! The female can lay more than 350 eggs at a time. This is the first stage of a silkworm’s life cycle. 5 Important Stages in the Life Cycle of a Silkworm Stage 1: The Egg The lifecycle of a crawling worm into a moth goes through several stages. ![]() Silk is an expensive and beautiful piece of fabric that used to be worn by only kings and royalty in the past. ![]()
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