• Faecal weight as an index of development rate and energy content of imago of lepidopterous insects

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    • Keywords


      Faecal weight; development rate; pupa; imago; Achaea janata

    • Abstract


      Statistically significant correlation coefficients were obtained for the relation between defecation rate and development rate as well as energy contents of pupa and imago of the noctuid mothAchaea janata. Using simple regression equations, the dependent variables development rate, pupa and imago were predicted against values of defecation rate obtained in a factorial design of experiment. The predicted and observed values did not significantly differ from each other indicating the possibility of predicting these parameters from easily estimatable faecal weight. The validity of the concept was tested using the data available in literature.

    • Author Affiliations


      J Muthukrishnan1 T J Pandian2

      1. Department of Zoology, APA College, Palni - 624 602, India
      2. School of Biological Sciences, Madurai Kamaraj University, Madurai - 625 021, India
    • Dates


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