Studies on the Life table and Life budget analysis of a coccinellid Coleoptera: Coccinella transversalis fab. for five successive generations

Registration ID: IJNRD_182330

Published ID: IJNRD2208009

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Barish E. James , Omkar

Life history, Lady beetle, predation rate, Coccinella transversalis, population ecology, life table.

The Life table and Life budget studies of C. transversalis for five generations were done for the percentage mortality and the maximum survival of its different life stages throughout the year. The mortality value of eggs was minimum (9.00%) in second generation and maximum (17.60%) in fifth generation. The apparent mortalities (100qx) in larval and pupal stages were minimum in second generation and maximum in the fifth generation. The minimum apparent mortality of first, second, third, fourth larval stage and pupal stage in second generation were 16.70, 10.03, 8.50, 3.53 and 2.99 percent, respectively. The maximum apparent mortality of first, second, third, fourth larval stage and pupal stage were 22.82, 17.61, 12.60, 12.23 and 9.45 percent, respectively, during fifth generation. The life budget studies of C. transversalis for five generations shown the maximum emergence and survival of ladybeetles were found in second generation, whereas the maximum mortality of ladybeetle occurred in fifth generation. The k- values for eggs were lowest (0.0410) in second generation and highest (0.0841) in fifth generation. The minimum k- values for first, second, third, fourth instar larvae and pupae were 0.0794, 0.0459, 0.0386, 0.0156 and 0.0132, respectively, during second generation and 0.1125, 0.0841, 0.0585, 0.0566 and 0.0431, respectively, in fifth generation. The Kappa (K) value was found minimum in second generation (0.2336) followed by third (0.2807), first (0.3224), fourth (0.3645) and fifth (0.4389) generations. The lowest real mortality (100rx) in first, second, third, fourth larval instar and pupal stage were 15.20, 7.60, 5.80, 2.20 and 1.80 percent, respectively, in second generation. Highest real mortality during these stages was 18.80, 11.20, 6.60, 5.60 and 3.80 percent in fifth generation. The maximum survival rates of larvae and pupae were in second generation and minimum in fifth generation. The survival rate of first, second, third, fourth larval instar and pupae was 0.83, 0.90, 0.91, 0.96 and 0.97, respectively during second generation and 0.77, 0.82, 0.87, 0.88 and 0.91 during fifth generation.

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Barish E. James & Omkar (August-2022). Studies on the Life table and Life budget analysis of a coccinellid Coleoptera: Coccinella transversalis fab. for five successive generations. INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 7(8), 61-77. https://ijnrd.org/papers/IJNRD2208009.pdf

Volume 7 Issue 8, August-2022

Pages : 61-77

Paper Reg. ID: IJNRD_182330

Published Paper Id: IJNRD2208009

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Research Area: Engineering

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Published Paper PDF: https://ijnrd.org/papers/IJNRD2208009.pdf

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Journal Name: INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT(IJNRD)

ISSN: 2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar | ESTD YEAR: 2016

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