Imidacloprid impact on arthropods associated with canopy of common beans

Abstract

Neotropical Entomology 32(2): 335-342 (2003) Impacto do Imidaclopride em Artrópodes Associados ao Dossel do Feijoeiro RESUMO -O presente trabalho objetivou verificar o efeito temporal e espacial da aplicação do inseticida imidaclopride na comunidade de artrópodos associados ao dossel do feijoeiro (Phaseolus vulgaris). Cerca de dois hectares de feijoeiro foram divididos em duas partes. Ambas receberam as mesmas práticas culturais, exceto pela aplicação do inseticida. Imidaclopride 700 GrDA (147 g i.a/ha) foi aplicado aos 20 dias de idade das plantas. Foram traçados três transectos abrangendo as áreas pulverizadas e não-pulverizadas. Cada transecto foi composto por nove pontos amostrais eqüidistantes 10 m. Amostrou-se a parte aérea das plantas antes da aplicação e aos 3, 8, 14, 22, 29 37 e 44 dias após a aplicação do imidaclopride. Verificou-se efeito temporal do inseticida em algumas guildas de artrópodos, mas o efeito espacial da aplicação do inseticida foi verificado apenas para Empoasca kraemeri Roos & Moore, onde a dispersão da área não-tratada mascarou o efeito do inseticida sobre a área tratada. O inseticida afetou as populações de Thrips tabaci (Lind.), Caliothrips brasiliensis (Morgan) e E. kraemeri, mantendo-as em baixos níveis até 22 dias após a aplicação. Imidaclopride também preveniu o incremento de Collembola, não apresentando, porém, efeito significativo sobre insetos mastigadores, Frankliniella sp., Liriomyza spp. e Bemisia tabaci (Genn.). Imidaclopride foi seletivo, não afetando predadores e parasitóides comumente associados às pragas do feijoeiro. PALAVRAS-CHAVE: Insecta, neonicotinóide, impacto ambiental, Phaseolus vulgarisABSTRACT -The present work aimed at assessing the temporal and spatial effect of applying the insecticide imidacloprid on the arthropod community associated with the canopy of common beans (Phaseolus vulgaris). About 2 ha of bean field was divided into two adjacent fields subjected to the same crop management practices except for insecticide application. Imidacloprid 700 GrDA (147 g a.i./ha) was applied to 20-day old plants. Three transects were extended from the mid-part of the sprayed area to the mid-part of the non-sprayed area. Nine sampling points 10 m apart were established in each transect. Arthropods were sampled from the plant canopy before and 3, 8, 14, 22, 29 37 and 44 days after insecticide application. There was a strong temporal effect of the insecticide on some arthropod guilds, but the spatial effect of the insecticide application was only noticeable in Empoasca kraemeri Roos & Moore whose dispersion from the non-sprayed area masked the insecticide effect on the treated area. The insecticide decreased the Thrips tabaci (Lind.), Caliothrips brasiliensis (Morgan), and E. kraemeri populations until 22 days after its application. Imidacloprid also prevented population increase of springtails (Collembola), but it did not significantly affect plant-chewing insects nor Frankliniella sp., Liriomyza spp. and Bemisia (Genn.). Imidacloprid was selective in favor of the...

Effects of imidacloprid on detoxifying enzyme glutathione S-transferase on Folsomia candida (Collembola)

“…The use of imidacloprid and other similar neonicotinoids was restricted for 2 years (starting in December 2013) in 25 EU countries including Germany, Italy, France, and Slovenia as a result of a study that showed a link between imidacloprid and bee death (EASAC 2015). Related study about an effect of the insecticide imidacloprid Responsible editor: Philippe Garrigues * Panwad Sillapawattana panwad.sillapawattana@rwth-aachen.de 1 on the arthropod community has shown that imidacloprid prevented population increase of springtail (Marquini et al 2003). In addition, Alves et al (2014) found that imidacloprid reduced significantly reproduction of Folsomia candida (EC20 = 0.02 mg kg −1 ).…”

Efficacy of insecticides in fruit borer control and residues on sugar apple fruit

“…Thus, although studies indicate that imidacloprid is selective to predators and parasitoids in some crops such as bean (Marquini et al, 2003), worldwide this compound has been associated with lethal effects on some insect species. In termites of the species Heterotermes tenuis (Hagen) (Isoptera: Termitidae), sublethal concentrations of imidacloprid altered the cleaning behavior of workers (Moino Jr. & Alves, 1998) whereas in bees, sublethal doses of the insecticides imidacloprid, fipronil, and deltamethrin determine changes in learning and memory performance during the foraging process (Decourtye et al, 2003).…”

Associação de inseticidas químicos e fungos entomopatogênicos no Manejo Integrado de Pragas – uma revisão

“…Em trabalho realizado por Marquini et al (2003), veri cou-se que imidacloprid foi bastante seletivo a duas espécies de trips, rips tabaci Lindeman e Caliothrips brasiliensis (Morgan) (Thysanoptera:…”