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Monday, 15 November 2004
D0186
Impact of the neonicotinoid insecticides acetamiprid (Assail), imidacloprid (Provado), thiacloprid (Calypso), and thiamethoxam (Actara) on the pear psylla predator, Deraeocoris brevis, in the laboratory
Deborah Brooks, deborah.brooks@oregonstate.edu, Dong Soon Kim, d7188@chollian.net, and Helmut Riedl, Helmut.Riedl@orst.edu. Oregon State University, Department of Entomology, Mid-Columbia Experiment Station, 3005 Experiment Station Drive, Hood River, OR
Acute topical toxicity of neonicotinoid insecticides on the predacious mirid, Deraeocoris brevis, were studied in the laboratory. D. brevis adults, second instar nymphs, as well as eggs were treated in a Potter spray tower at the full and at 10% of the full field rate. The untreated check was sprayed with distilled water. Mortality was assessed 24, 48 and 96 h after treatment. In egg tests, egg mortality as well as nymph mortality after egg hatch were assessed. At full field rate, all insecticides caused high adult and nymph mortality with acetamiprid being less toxic than the other neonicotinoid insecticides. Also, acetamiprid interfered less with egg hatch and subsequent nymph survival. Even the 10% field rate caused considerable mortality with acetamiprid and thiacloprid being less toxic to all stages than imidacloprid and thiamethoxam. Results suggest that neonicotinoid insecticides are disruptive and that D. brevis would not be able to survive treatments at full field rate.
Species 1: Hemiptera Miridae Deraeocoris brevis
Keywords: bioassay, pesticides
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COMMENTS AND CORRECTIONS
- From aazam nikzad, Pesticide, January 28, 2006
Dear Sir: We are going to take part in Pesticides international tender, as attached the conditions of the named tender. About method of cooperation for taking part in the tender, we have two alternatives: 1- You will take part yourself in the tender and we act in Iran on behalf of you and as your representative. In this case you should consider a commission for our company for our efforts. 2- We take part in the tender. In this case you supply all the material for us and also support us technically and help us to perform the project strictly in accordance with the tender conditions. Please furnish us; - Country of origin - The possibility of presentation goods production certificate. - Your company profile - The price of Goods. - The acceptance of tender conditions. Thank you in advance for your cooperation. Best regards: Miss Aazam nikzad Gandomkaran Saee Co. 5nd fl., No 235, Dr. Fatemi Ave., Opposite Parke Laleh, Tehran-Iran Tel : +98(21)88965313-88963622 Fax : +98(21)88965371 E-mail : aazamnikzad@gmail.com