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Life table and intrinsic rate of increase in Eutectona machaeralis Walker (Lepidoptera : Pyralidae).

T. V. Sathea* & V. Y. Kadama
a*Department of Zoology, Shivaji University, Kolhapur – 416004 India.
Received 18th November, 2013; Revised 15th January, 2013

Abstract : Eutectona machaeralis Walker (Lepidoptera : Pyralidae) is forest pest which acts as defoliator of Tectona grandis. Therefore, life table and intrinsic rate of increase have been studied. The first adult mortality was noted on sixth day. Avarage period of immature stages was 28 days. Maximum mean progeny production per day, mx was 26.8 on the 3rd day. The intrinsic rate of increase was found to be 0.149 per female per day and population multiplied 88.16 times in mean generation time of 30.6 days.

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