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Synchronization of maturation in Bombyx mori L. (Lepidoptera: Bombycidae) utilizing phytoecdysteroids from local plants

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Research Paper 09/09/2023
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Synchronization of maturation in Bombyx mori L. (Lepidoptera: Bombycidae) utilizing phytoecdysteroids from local plants

Elizabeth P. Obra, Christian Geen E. Salazar
Int. J. Biosci.23( 3), 158-163, September 2023.
Certificate: IJB 2023 [Generate Certificate]
Key: EcdysteroidsPhytoecdysteroidsSericultureSilkwormsSynchronization

Abstract

Sericulture is a labour-intensive enterprise which involves establishment of mulberry plantation for mulberry leaves production, the sole food of silkworms, Bombyx mori L.; silkworm rearing and cocoon processing. Rigorous investigations included the utilization of phytoecdysteroids (PEs) in extremely low doses to enhance silkworm larval development. PEs is plant ecdysteroids considered as secondary metabolites used to protect plants from phytophagous insects. PEs in this study were prepared from local plants such as Amaranthus spinosus L., Ipomea pes-caprae L. and Portulaca oleracea L. and administered to mulberry leaves sprayed with 100% and 50% concentrations to 5th instar silkworms 116, 92, 76, 52 and 28 hours before spinning. It resulted to synchronized maturation of silkworms which took for 2-3 hours compared to control group which reached about 6-7 hours. Consequently, the utilization of PEs also reduced the time of mounting activities, saving approximately 72 – 77%. It also contributed to the regulated growth and development of the silkworm larvae which could consequently reduce the labor cost of cocoon production particularly in mounting. The findings demonstrate that the utilization of PEs is a potential valuable technology in sericulture which could direct a significant increase in efficiency in silkworm rearing for cocoon production.

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