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The silkworms are fed with mulberry leaves, and after the fourth moult, they climb a twig placed near them and spin their silken cocoons. The silk is a continuous filament comprising fibroin protein , secreted from two salivary glands in the head of each worm, and a gum called sericin , which cements the filaments.
The silkworm Bombyx mori is fed on mulberry leaves cultivated in plantations. Silkworms are also found wild on forest trees, e.g Antheraea paphia which produces the tasar silk ( Tussah ). Antheraea paphia feeds on several trees such as Anogeissus latifolia , Terminalia tomentosa , T. arjuna ( Terminalia arjuna ), Lagerstroemia parviflora and ...
Bombyx is the genus of true silk moths or mulberry silk moths of the family Bombycidae, also known as silkworms, which are the larvae or caterpillars of silk moths. The genus was erected as a subgenus [ 2 ] by Carl Linnaeus in his 10th edition of Systema Naturae (1758).
To produce 1 kg of silk, 104 kg of mulberry leaves must be eaten by 3000 silkworms. It takes about 5000 silkworms to make a pure silk kimono. [66]: 104 The major silk producers are China (54%) and India (14%). [67] Other statistics: [68]
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To encourage silk culture in California, the Legislature, in 1865–1866 [3] (another source states 1867), passed an act giving a bounty of $250 for every plantation of 5,000 mulberry trees two years old, and one of $300 for every 100,000 merchantable cocoons produced. This greatly encouraged the planting of trees and the production of cocoons.
A food safety expert weighs in on flour bugs, also known as weevils, that can infest your pantry after one TikToker found her flour infested with the crawlers.