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Feb 17, 2014

# Life cycle of silk moth

Describe various stages in the life cycle of a silk moth?

Syeda

Member since Jan 25, 2017

 Answer. Sericulture, or silk farming, is the rearing of silkworms for the production of raw silk. Life cycle of a silk moth: 1. Egg →2.First stage of larvae→3.Second stage of larvae→4.final stage of larvae→ 5.Pupa →6.Adult The female silk moth lays eggs, from which hatch larvae which are called caterpillars or silkworms. They grow in size and when the caterpillar is ready to enter the next stage of its life history called pupa, it first weaves a net to hold itself. Then it swings its head from the side to side and secrets fibre made of a protein which hardens on exposure to air and becomes silk fibre. Soon the caterpillar completely covers itself by silk fibres and turns into pupa. This covering is known as cocoon. The further development of the pupa into moth continues inside the cocoon. SME Approved

Member since

The total Life-Cycle of a Silkworm ranges from 6-8 weeks. Generally, the warmer the weather the quicker the Silkworm will complete its life-cycle, however, other factors such as humidity and exposure to sunlight are also very important. Ideally, Silkworms will experience 12 hours of sunlight, and 12 hours of darkness per day, a temperature of 23-28 degrees Celsius, as well as humidity levels of 85-90%. Under these conditions, your eggs should hatch in a period of 7-10 days.� Eggs: In Australia, a Silkworm will naturally hatch in late July to early August – depending on the weather where you live – this time amazingly coincides with the Mulberry Tree regaining its leaves after the tree loses them in Winter. It is recommended that you store all of your eggs in a a cold space (a fridge is ideal) because if there are fluctuations in the weather, your eggs may hatch earlier than expected. When placed in a cold area, you can control when your eggs hatch, therefore ensuring they will always have a food source. If your eggs have been placed in the fridge, they will begin developing and hatch after 10-25 days, depending on the warmth of the weather, with warmer weather causing quicker hatching. Eggs 10-25 days Lava and worms 20-33 days Pupa 10-14 days Moth 5-10 days Lava/Cocoon: After 20-33 days of constantly munching away at Mulberry leaves or chow, your Silkworm will feel the urge to cocoon. This process can take up to 48 hours for the Silkworm to fully complete, and the result will be a perfectly ovate cocoon, with one continuous strand of silk up to 1 kilometre long! Inside the cocoon, the Silkworm will moult moults for the last time, as it approaches the last stage of its life-cycle to become a moth. Sometimes Silkworms do funny things, and this is evident when a Silkworm decides to spin a cocoon with a friend! When this happens, the cocoon will be noticeably larger, however if the two are members of the opposite sex, sometimes the cocoon does not hatch – and you open it to find two dead Silk-Moths and a bunch of eggs inside the cocoon! es_whiteseductressleaf3 Moth: After 10-14 days of developing into a moth in its cocoon, the Silk-Moth will appear from the cocoon and will excrete a brownish fluid upon emergence – don’t worry, this is completely normal, and is a sign the the Silk Moth is cleaning out its system. Silk-Moths cannot fly, as a result of thousands of years of domestication, however male Silk-Moths may leave their container/shoebox as they search for a female mate. Some males may be able to almost fly if you drop the from a small height, however it is uncontrolled, ad they hit the ground after a few moments. It is quite easy to separate the male and female Silk-Moths, with the females having larger abdomens and males possessing smaller abdomens. Males also tend to be more active, as they are constantly searching for a mate. The moth lives a very brief life of 5-10 days, with males generally living longer than Females. Silk-Moths will begin to search for a mate almost immediately after emerging from their cocoon, with some seen mating with a moth of the opposite sex inside their cocoon should two moths share one! After mating, the Female Moth will lay between 300-500 eggs, and die, whereas the male Silk-Moth will search for another mate, should it not be too old. es_mothcloseupweb At Everything Silkworms, we follow the practice of producing “Ahimsa” Silk, also known as “Peaceful” Silk – meaning that we allow every moth to emerge from its cocoon.

Deepak

Member since

Basically a life cycle of silk worm is very same as butterfly. First stage it changes into caterpillar from eggs layed by female silk worm Then caterpillar produces Larva and in few days it is covered with larva and is called cocoon There is pupa in cocoon which develops and becomes silk worm and the life cycle continuous

Member since Apr 24, 2013

Ans: Sericulture, or silk farming, is the rearing of silkworms for the production of raw silk. Life cycle of a silk moth: 1. Egg →2.First stage of larvae→3.Second stage of larvae→4.final stage of larvae→ 5.Pupa →6.Adult The female silk moth lays eggs, from which hatch larvae which are called caterpillars or silkworms. They grow in size and when the caterpillar is ready to enter the next stage of its life history called pupa, it first weaves a net to hold itself. Then it swings its head from the side to side and secrets fibre made of a protein which hardens on exposure to air and becomes silk fibre. Soon the caterpillar completely covers itself by silk fibres and turns into pupa. This covering is known as cocoon. The further development of the pupa into moth continues inside the cocoon.
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