scholarly journals EFFECT OF MATING DURATION ON FECUNDITY (REPRODUCTIVE PARAMETER) OF ERI SILK MOTH PHILOSAMIA RICINI IN DIFFERENT SEASONS

2015 ◽  
Vol 3 (9SE) ◽  
pp. 1-3
Author(s):  
Rajkumari Batham ◽  
Ulka Yadav
Keyword(s):  
Reproductive Parameter ◽  
Philosamia Ricini ◽  
Mating Duration ◽  
Fecundity Rate ◽  
Silk Moth ◽  
Different Seasons ◽  
Eri Silk

Production of viable eggs in the Eri silkworm, Philosamiaricini is influenced by the mating activity.The effect of coupling duration on the fecundity of Eri silkworm, Philosamiaricini during different seasons was studied. Fecundity rate inEri silkworm, PhilosamiaRicinidoes notsignificant variation with increase in mating duration were observed different season.

scholarly journals Rearing performance of Philosamia ricini (Eri silkworm) in different seasons of Ujjain district

2014 ◽  
Vol 15 (3) ◽  
pp. 109-113
Author(s):  
Shubhangi Vaidya ◽  
Ulka Yadav
Keyword(s):  
Ricinus Communis ◽  
Spring Season ◽  
Larval Weight ◽  
Shell Weight ◽  
Philosamia Ricini ◽  
Natural Silk ◽  
Larval Length ◽  
Autumn Season ◽  
Different Seasons ◽  
Eri Silk

India has the unique distinction of being only country producing all the five commercially traded varieties of natural silk namely Mulberry, Eri, Muga, Temperate tasar and Tropical tasar. The silk produced by Philosama ricini is called Eri silk. Eri silk is known as Non Violence silk or Piece silk. It is also said to be Poor Person’s silk. The Eri silkworm (Philosamia ricini) is multivoltine, holometabolus, non-mulberry, completely domesticated and feed on castor (Ricinus communis) leaves.We observed the effect of different seasons on rearing performance of Eri silkworm in respect of different larval parameters (larval weight, larval length, ERR% and pupation) and cocoon parameter (cocoon weight, pupae weight, shell weight & shell %). Our findings clearly indicated that the rearing performance of Eri silkworm was better in spring season than winter and autumn season of Ujjain district M.P.

Studies on structural and fibre quality characteristics of eri silk cocoons in different seasons and places

2017 ◽  
Vol 109 (4) ◽  
pp. 543-551
Author(s):  
Debasis Chattopadhyay ◽  
Arijit Chakraborty ◽  
S. M. Chatterjee
Keyword(s):  
Quality Characteristics ◽  
Fibre Quality ◽  
Different Seasons ◽  
Eri Silk

scholarly journals RELATIVE IMPACTS OF DIFFERENT SEASONS ON THE QUALITIES ERISILK COCOONS AND ERI SILK YARN OF FOUR DIFFERENT MUTANTSTRAINS OF PhilosamiariciniBsd.

2016 ◽  
Vol 4 (11) ◽  
pp. 103-107
Author(s):  
Akhilesh Kumar Gahlaut ◽  
Arjun Arjun
Keyword(s):  
Mutant Strain ◽  
Filament Length ◽  
Shell Weight ◽  
Mutant Strains ◽  
Different Seasons ◽  
Elongation Percentage ◽  
June July ◽  
Eri Silk ◽  
Evident Variation ◽  
Silk Yarn

The relative impacts of different seasons of ericulture namely May-June,July-Aug., Sep.-Oct. and Nov.-Dec on the qualities of erisilk cocoons and erisilk yarn of four different mutant strains of PhilosamiariciniViz; Yellow plain, Yellow zebra, G.B. plain and G.B. zebra have been evaluated under the reeling parameters. Results obtained indicate that the reeling performances of G.B. plain mutant strain is best in the season May-June (summer)followed by July-August (Rainy) and are relatively better in respect of qualities of eri cocoons and eri silk yarn in comparison to two other seasons namely September-October and November-December. The said variations are probably on account of the fact that May-June followed by July-August seasons provide relatively better and conducive eco-friendly environment to mutant strain than two other seasons of eri culture in respect of cocoon weight, shell weight, shell ratio, filament length of eri silk yarn, rate of eri silk tenacity of fibre and elongation percentage of fibre. The significant variations in relation to four different seasons in the qualities of eri cocoons and eri silk yarn of yellow plain mutant strain of Philosamiaricini (the popular eri silkworm among the four mutant strains) also have been found relatively better in respect of qualities of eri cocoons and eri silk yarn in all the seasons in spite of evident variation on account of genetic variabilities and differences in the genetic make-up of mutant strains.

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