• Terminal velocity of the first instarEctropis excursaria (Guenee) (Lepidoptera: Geometridae)

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/anml/096/06/0673-0678

    • Keywords

       

      Terminal velocity; Ectropis excursaria ; first instars; wind dispersal; silk length; anaesthetisation

    • Abstract

       

      The terminal velocity of first instarEctropis excursaria, determined in a part mechanical part electrical apparatus, were 114±12 cm/s and 118±12·5 cm/s for two different heights. Terminal velocity decreased exponentially with increased silk lengths. For a given length of silk there wsa a significant difference in the terminal velocity of live and anaesthetised insects. The significance of these results to the understanding of the wind dispersal of first instar caterpillars is discussed.

    • Author Affiliations

       

      R Ramachandran1 2

      1. Waite Agricultural Research Institute, Glen Osmond, South Australia - 5064
      2. Entomology Section, National Chemical Laboratory, Pune - 411 008, India
    • Dates

       
  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.