Silkworm Physiology &

Rearing Technology Innovation Laboratory







*   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

*   Sartorius Balance

*   Stereoscopic Binocular

*   Compound Microscope

*   Ordinary Dissecting Binocular

*   Centrifuge (Remi-make)

*   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.


2)     APR 3250: Development of rearing package for optimizing cocoon yield inWest Bengal



A season specific silkworm rearing technology suitable for agro-climatic condition of West Bengal has been developed.


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

                        implementation in West  Bengal  condition


     Out come:

*   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.





*   Silkworm Egg Box (Patented)

*   Low Cost Incubation Pot

*   Low Cost Rearing Tray (Provisionally Patented)

*   Acid Treatment Bath

*   Lime Duster

*   Mulberry Twig Chopper

*   Low Cost Hygrometer