Journal of Progressive Agriculture
Open Access
  • Year: 2016
  • Volume: 7
  • Issue: 2

Safety evaluation of certain conventional insecticides at sublethal dose to European honeybee, Apis mellifera Linnaeus

  • Author:
  • V. Ratnakar, S.R. Koteswara Rao2, D. Sridevi, B. Vidyasagar1
  • Total Page Count: 5
  • Page Number: 136 to 140

1Department of Plant Pathology, College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500 030, India

2Department of Entomology, S. V. Agricultural College, Acharya N.G. Ranga Agricultural University, Tirupati-517 502, India

Department of Entomology, College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500 030, India

*Email: ratnakar.ento@gmail.com

Online published on 17 November, 2016.

Abstract

The toxicity of eight conventional insecticides viz., acephate, chlorpyriphos, dichlorvos,dimethoate, profenophos, triazophos, cypermethrin and neem oil at half of the recommended dosewas tested on honeybee Apis mellifera L using the dry film method. Foragers were released into treated jars at different intervals i.e., 0, 12 and 24 hours after dry film formation. Acephate, cypermethrin and dimethoate were found to be highly toxic to honeybees, while dichlorvos and neem oil were least toxic.

Keywords

Honeybee, Apis mellifera, Sublethal, Insecticides, Toxicity