2024, Vol. 9, Special Issue 4
Vital Statistics of Bombyx mori Linnaeus on diverse mulberry varieties: Age-specific insights
Author(s): Koushik Garai
Abstract: Background: This study investigates the life cycle dynamics of Bombyx mori Linnaeus reared on four different varieties of mulberry plants: Ber-1, S-146, S-799, and S-1635, spanning a period of 40 to 41 days per species. The research focuses on survivorship (lx) and mortality patterns to understand their implications for the overall life expectancy of the insect.
Result: For Ber-1, survivorship initially remained stable with no significant reductions for the first two days, followed by intermittent declines and pauses in mortality until the 24th day. A notable hiatus in survivorship reduction was observed between the 21st and 30th days, after which survivorship gradually decreased until a sharp decline on the 40th day. Mortality exhibited various peaks, with the highest rates recorded on the 36th and 39th days. Initial life expectancy from the egg stage was 53.26 days, significantly reduced by high mortality rates during the critical age range of 35–45 days. Similarly, S-146 showed stable survivorship phases punctuated by declines, stabilizing from the 23rd to 31st days before a sharp decrease towards the end of the cycle. Mortality peaks on the 34th and 36th days contributed to a decline in lx, aligning with an initial life expectancy of 56.02 days and significant mortality during days 36–39. Analysis of S-799 revealed survivorship stability with a notable decline starting from the 2nd day until the 21st, interrupted by a pause until the 32nd day, followed by a gradual decline culminating sharply on the 41st day. Mortality exhibited diverse peaks and a non-linear pattern, with high rates during days 36–38, influencing the overall life expectancy of 55.34 days. Finally, S-1635 displayed survivorship declining after the 2nd day, stabilizing from the 22nd to 32nd days before sharp declines on the 33rd and 40th days. Mortality rates peaked on days 35, 37, 38, and 39, with varied patterns contributing to a similar life expectancy decline as observed in other species.
Conclusion: This comprehensive study provides foundational knowledge essential for future research aimed at optimizing pest control and ecological sustainability in agroecosystems. Understanding the dynamics of Bombyx mori Linnaeus on different mulberry plant species is crucial for developing targeted pest management strategies and enhancing agricultural productivity while minimizing environmental impacts.
DOI: 10.22271/maths.2024.v9.i4Sa.1747Pages: 29-38 | Views: 291 | Downloads: 18Download Full Article: Click HereHow to cite this article:
Koushik Garai.
Vital Statistics of Bombyx mori Linnaeus on diverse mulberry varieties: Age-specific insights. Int J Stat Appl Math 2024;9(4S):29-38. DOI:
10.22271/maths.2024.v9.i4Sa.1747