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Flonicamid, a novel insecticide with a rapid inhibitory effect on aphid feeding
Author(s) -
Morita Masayuki,
Ueda Tsuyoshi,
Yoneda Tetsuo,
Koyanagi Tohru,
Haga Takahiro
Publication year - 2007
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.1423
Subject(s) - aphid , insecticide resistance , inhibitory postsynaptic potential , biology , toxicology , pharmacology , agronomy , neuroscience
Abstract Flonicamid (IKI220; N ‐cyanomethyl‐4‐trifluoromethylnicotinamide), a pyridinecarboxamide compound, is a novel systemic insecticide with selective activity against hemipterous pests, such as aphids and whiteflies, and thysanopterous pests. The purpose of this study is to clarify the biological properties of flonicamid against aphids. Flonicamid is very active against aphids, regardless of differences in species, stages and morphs. This compound inhibited the feeding behaviour of aphids within 0.5 h of treatment without noticeable poisoning symptoms such as convulsion, and this antifeeding activity was not recoverable until death. The nymphs born from adults exposed to flonicamid for 3 h showed high mortality. The effect of flonicamid on the feeding activity of an individual aphid was studied using electronic monitoring of insect feeding behaviour (EMIF). Although the treated aphid attached the head of its proboscis to the leaf surface, salivation and sap feeding were strongly inhibited. These results suggest that the main insecticidal mechanism of flonicamid is starvation based on the inhibition of stylet penetration to plant tissues. Copyright © 2007 Society of Chemical Industry