Economic important of silk worm
Answers
Answer: The raw silk is used in the manufacture of woven materials and the knitted fabrics for the preparation of garments, parachutes, parachute cords, fishing lines sieve for flour mills, insulation coil for telephones and wireless receivers and tyres of racing cars.
Explanation: Because the silkworm is the larva or caterpillar of a silkmoth. It is an economically important insect, being a primary producer of silk. A silkworm's preferred food is white mulberry leaves, though they may eat other mulberry species and even Osage orange.
Answer:
Silkworm have a large role in rural life in many countries
being an insect of economic importance. Silkworm
produces silk as high quality fiber and silk fabrics are
highly attractive. There are different lines and strains for
silk production.
Production of cocoon and raw silk are affected by
several factors, such as genetic potential of commercial
varieties, quality of silkworm eggs, pests and diseases
incidence, quality of mulberry leaves, weather, breeding
and management plans and silk reeling methods
(Bizhannia and Seidavi, 2008).
Researchers should investigate and compare pro-
ductive potential of various varieties and select the high
productive lines in order to perform hybridization.
Rahman and Rahman (1990) studied genetic potential of
36 varieties during four rearing seasons, and found that
these varieties have high heritability and different
genotypes have high genetic diversity that can be used
for breeding programs. The importance and role of
additive gene effects on phenotype selection in these
traits were also emphasized.
There are many researches about genetics, feeding
and performance in silkworm and other insects
(Chaudhuri, 2003; Hajarika et al., 2003; Reddy, 2010;
Yadav and Mahobiam, 2010). Rayar et al. (1989) studied
the structure of genetic variation of 18 economical traits
in 29 silkworm varieties and found larval weight, larval
duration, cocoon shell weight and length of fiber to have
high heritability.