Life table and population parameters of Paracoccus marginatus at varying temperatures on cotton


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Authors

  • M Amutha Amutha
  • B Dharajothi

Keywords:

Paracoccus marginatus, life table, population parameters, temperature

Abstract

The effect of temperature on the life history traits of Paracoccus marginatus was carried out at 20, 25 and 30°C on cotton. The data revealed that P. marginatus took maximum of 41.3 days to complete one generation at 20°C followed by 28.5 and 26.5 days at 25°C and 30°C, respectively. Adult longevity was higher at 20°C, but declined at 25 and 30°C. Doubling time was lowest at 30°C (3.55 days) and higher at 20 and 25oC (9.06 and 4.19 days, respectively). Generation time decreased as temperature increased towards an optimal temperature. As temperature increased, survivorship (lx) declined more quickly, but fecundity (mx) peaked earlier. At 30°C, the net fecundity was highest resulting in the highest intrinsic rate of increase. The results indicated that ability of P. marginatus to develop, survive and reproduce successfully between 20 and 30oC suggests that it can establish in areas within this temperature range.

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Submitted

2020-10-01

Published

2020-10-09

How to Cite

Amutha, M. A., & Dharajothi, B. (2020). Life table and population parameters of Paracoccus marginatus at varying temperatures on cotton. Indian Journal of Plant Protection, 44(1). Retrieved from https://epubs.icar.org.in/index.php/IJPP/article/view/105465

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Articles