Effect of insecticide‐treated potato plants on aphid behavior and potato virus Y acquisition. Issue 8 (25th September 2014)

• Record Type: Journal Article
• Authors: Boquel, Sébastien; Zhang, Jianhua; Goyer, Claudia; Giguère, Marie‐Andrée; Clark, Catherine; Pelletier, Yvan
• Is Part Of: Pest management science. Volume 71:Issue 8(2015:Aug.)
• Page Start: 1106
• Page End: 1112
• Publication Date: 2014-09-25
• Subjects: Pests -- Control -- Periodicals; Pesticides -- Periodicals; 632.9
• DOI: 10.1002/ps.3892
• Languages: English
• ISSNs: 1526-498X

Abstract

<abstract abstract-type="main" id="ps3892-abs-0001"> <title>Abstract</title> <sec id="ps3892-sec-0001" sec-type="section"> <title>BACKGROUND</title> <p id="ps3892-para-0001">The objective was to assess the effect of two contact insecticides, lambda‐cyhalothrin and flonicamid, and three systemic insecticides, pymetrozine, dimethoate and imidacloprid, on the behavior and <italic>potato virus Y</italic> (PVY) acquisition of three aphid species, <italic>Macrosiphum euphorbiae</italic> (Thomas), <italic>Rhopalosiphum padi</italic> L. and <italic>Aphis fabae</italic> (Scopoli).</p> </sec> <sec id="ps3892-sec-0002" sec-type="section"> <title>RESULTS</title> <p id="ps3892-para-0002">At 1–4 days after application, contact insecticides strongly modified aphid behavior and intoxicated them. Dimethoate sprayed on potato plants did not change the behavior of the three tested aphid species, while imidacloprid slightly reduced the probing behavior of <italic>M. euphorbiae</italic> and intoxicated several <italic>R. padi</italic>. The residual effect of the insecticides (10–21 days after application) was almost non‐existent. No intoxication was found, and only slight changes in the behavior of <italic>R. padi</italic> and <italic>A. fabae</italic> were observed. The acquisition of PVY by <italic>R. padi</italic> was reduced on lambda‐cyhalothrin‐ and dimethoate‐treated plants that were sprayed a few days before the test.</p> </sec> <sec id="ps3892-sec-0003" sec-type="section"> <title>CONCLUSION</title> <p id="ps3892-para-0003">One systemic and two contact insecticides were effective at intoxicating aphids and reducing probing behavior soon after application. Some insecticides might sporadically reduce the spread of PVY either by modifying the behavior or reducing PVY acquisition, but their action is likely limited to a short period of time after application. © 2014 Her Majesty the Queen in Right of Canada <italic>Pest Management Science</italic> © 2014 Society of Chemical Industry</p> </sec> </abstract>