Silkworm Physiology &
Rearing Technology Innovation Laboratory
DR. JAYEETA SARKAR, Scientist-D
Development of appropriate Silkworm Rearing Technology for the Region.
Designing and development of simple Sericultural Appliances.
Working on some physiological aspect of Silkworm.
Bio-assay studies complementary to various Research Projects carried in the Institute.
Hot Air Oven
Ordinary Dissecting Binocular
Air Conditioners and Refrigerators
1) AIP3421: Physio-Biochemical Characterization of Selected Silkworm Germplasm Accessions during Seed Crop Seasons.
Physio-Biochemical Characterization of selected silkworm germplasm accessions for quality assessment and identification of physio-biochemical markers/ indicators, if any, for utilization by the silkworm breeders for screening the silkworm breeds.
2) PPA 3366: Development of integrated package for raising Chawki leaves and young age silkworm rearing for successful cocoon production
Development of suitable package of practices for chawki garden to support the young age silkworm rearing for successful cocoon production
1) APS 3238: Induction of trimoulting in bivoltine silkworm by physiologically active chemicals and their utilization as male parent for multi x bi hybrid preparation
Identification of physiologically active chemical for inducing trimoulting in bivoltine silkworm
Reduction of larval period by 4–5 days in induced trimoulter by completely skipping of the 5th instar, thereby increasing the survival percentage during adverse seasons.
The number of cocoon in one kg was much higher in trimoulter (1978 & 1401 in YB & NB4D2 respectively) in comparison to control (649 & 602 in YB & NB4D2 respectively), which is helpful for grainage.
As the rearing performance of N x Tri (Bi) was found at par with N x Bi hybrid, trimoulter bivoltine male may be utilized safely for producing multi x bi dfls.
3250: Development of rearing
package for optimizing cocoon yield in
A season specific silkworm rearing technology
suitable for agro-climatic condition of
Recommendation For Chawki Rearing:
Method of Rearing:
Low Humid Season: Box rearing
High Humid season: Open type of Shelf Rearing
Spacing: 6 - 54 sq.ft./100 dfls
Larval Density: 8900 to 750 per sq.ft.
Recommendation For Late Age Rearing:
Spacing between the trays : 9 inches.
Frequency of feeding:
4 times (Low Humid season)
3 times (High Humid season.)
Bed spacing: 396 sq.ft. /100 dfls
Larval density: 100 larvae /sq.ft.
Recommendation For Mounting:
Type of Mountage: Plastic Collapsible mountage for all the crop seasons.
Larval Density: Multi x Bi hybrids - 50 larvae per sq. ft.
Multi x Multi - 60 larvae per sq. ft.
Programme: Refinement of seed technology package of SSTL, Kodathi for
Separation of sex of different Nistari lines at cocoon stage based on cut-off point
Standardization of no. of moths required per square feet for loose egg preparation.
Standardization of no. of grains per gram in different crop seasons.
FARMERS’ NEED BASED TECHNOLOGIES DEVELOPED:
Silkworm Egg Box (Patented)
Low Cost Incubation Pot
Low Cost Rearing Tray (Provisionally Patented)
Mulberry Twig Chopper
Low Cost Hygrometer