P. KUMAR AND N. MURALEEDHARAN

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  Available from: Roobak Kumar

  Article: Variations in the esterase activity between two different populations of the red spider mite, O lig o n y c h u s c o ffe ae Neitner (Acarina: Tetranychidae) infesting tea.

  A. ROOBAKKUMAR, A. BABU, P. KUMAR AND N. MURALEEDHARAN
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  ABSTRACT: Variations in esterase activity were studied in two different populations of red spider mite (Oligonychus coffeae), one infesting the conventional tea fields receiving pesticide applications and the other occupying organic fields, where synthetic pesticides are not applied. Esterase activity was significantly higher in mites exposed to pesticides than in the population from organic tea fields, which are not exposed to pesticides. Gel electrophoretic studies revealed that the presence of two deeply stained esterase bands in red spider mites collected from the conventional tea fields whereas only one esterase band with low staining intensity was noticed in mites collected from organic tea fields.
  JOURNAL OF BIOSCIENCES RESEARCH. 01/2010;