New Update Sericulture

                                   
Sericulture. https://cststudy.blogspot.com/

                                

Sericulture

The culture of silkworm moth for commercially silk purpose is known as 
sericulture. It include both rearing of silkworm and moriculture (mulberry 
culture).

Types of Silkworm

1. Mulberry silkworm: Bombyx mori.
2.  Eri Silkworm: Philosamia Cynthia.
3.  Tasar silkworm  
♦  Indian tasar: Antheraea mylitta.  
♦  Chinese tasar: Antheraea pernyi.  
♦  Japanese tasar: Antheraea yamamai. 
4.  Muga silkworm: Antheraea assamensis. Beside these, there is a special type of silkworm known as Fish line silkworm: Eriogyra pyretorus.

Food plants for silkworm

1.  Mulberry silkworm: Mulberry plants.
2.  Eri silkworm: Castor leaves. Besides, Cassava, Papaya, Sweet potato, Champa etc. 3.  Tasar silkworm  
♦  Indian tasar: Asam, Arjun.  
♦  Chinese/Japanese tasar: Oak leaves. 4.  Muga silkworm: Leaves of som and soalu. 5.  Fish line silkworm: Liquidambar formosana.(Growing in Hawaii Island)

Difference between Mulberry silkworm and Eri silkworm        

Mulberry silkworm                              Eri silkworm 
1. Thread continuous.                         1. Thread discontinuous. 
2. Fine silk.                                         2. Coarse silk.
3. Small cocoon size.                          3. Large cocoon size. 4. Comparatively low product.           4. High product.

Classification of mulberry silkworm 

Mulberry silkworm is classified may various ways

▲ On the basis of origin or regional distribution
1.  European silkworm. 
2.  Japanese silkworm. 
3.  Chinese silkworm.
4.  Indian silkworm.

▲ On the basis of generation per year 1.  Univoltine: This type of silkworm produce one generation per year. 2.  Biovoltine: This produce two generation per year. 3.  Multivoltine: In this case more than two (5­8) generation produce per year.

▲ On the basis of larval moult
1.  Tri­moulters.
2.  Tetra­moulters (In Bangladesh).
3.  Penta­moulters.

▲ On the basis of strains
1.  Pure strains.
2.  Hybrid strains.
a. Monohybrid: When two strains are involved. 
b.  Polyhybrid: When more than two strains are involved. 

Races of Silkworm

a) Nistari: C/40.
b) Nistari: Nawabganj.
c) Nistari: Mirganj.
d) Nistari: Chandraghona.
e) Nistid: White.
f) Nistid: Sylhet. 

Sketch the outline of Life Cycle of Mulberry silkworm




















Fig: Life cycle of Bombyx mori

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