Effect of the flavonoid rutin on the biology of Spodoptera frugiperda (Lepidoptera: Noctuidae)

• Published in: Acta scientiarum. Agronomy 2016-04, Vol.38 (2), p.165-170
• Main Authors: Silva, Talita Roberta Ferreira Borges, Almeida, Andre Cirilo de Sousa, Moura, Tony de Lima, da Silva, Anderson Rodrigo, Freitas, Silvia de Sousa, Jesus, Flavio Goncalves
• Format: Article
• Language: English
• Subjects: AGRONOMY; Animal behavior; Biopesticides; Corn; fall armyworm; flavonoid; Flavonoids; insecticide plant; Insects; Metabolites; secondary metabolite
• ISSN: 1679-9275; 1807-8621; 1807-8621
• DOI: 10.4025/actasciagron.v38i2.27956

The fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is a major pest of maize crops in Brazil. The effects of plant metabolites on the biology and behavior of insects is little studied. The aim of the study was to evaluate the activity of rutin on the biology of the S. frugiperda by using artificial diets containing rutin. The study evaluated four treatments: regular diet (control group) and diets containing 1.0, 2.0 and 3.0 mg [g.sup.-1] of rutin. The following biological variables parameters of the larvae were evaluated daily: development time (days), larval and pupal weight (g) and viability (%), adult longevity and total life cycle (days). A completely randomized experimental design was used with 25 replication. The rutin flavonoid negatively affected the biology of S. frugiperda by prolonging the larval development time, reducing the weight of larvae and pupae and decreasing the viability of the pupae. The addition of different concentrations of rutin prolonged the S. frugiperda life cycle. The use of plant with insecticidal activity has the potential with strategy in IPM. Keywords: fall armyworm, insecticide plant, secondary metabolite, flavonoid. A lagarta Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) e a principal praga da cultura do milho no Brasil. A acao de substancia quimica de defesa de planta, na biologia e comportamento de inseto e pouco estudada. O objetivo do trabalho foi avaliar a acao de rutina e os efeitos na biologia da lagarta S. frugiperda, utilizando-se dieta artificial acrescida com este flavonoide. O trabalho consistiu de quatro tratamentos: dieta normal (testemunha) e dieta com adicao de 1,0; 2,0 e 3,0 mg [g.sup.-1] de rutina. As lagartas foram avaliadas diariamente, observando os parametros biologicos: periodo, peso e viabilidade larval, periodo, peso e viabilidade pupal, longevidade de adultos e ciclo total. Utilizou-se o delineamento experimental inteiramente casualizado com 25 repeticoes. O flavonoide rutina mostrou-se influenciar de forma negativa a biologia de S. frugiperda por prolongar o periodo larval, diminuir o peso larval e pupal e viabilidade pupal. A adicao de rutina nas diferentes concentracoes prolongou o ciclo de S. frugiperda. O uso de planta com atividade inseticida tem potencial como estrategia em MIP. Palavras-chave: lagarta do cartucho, planta inseticida, metabolito secundario, flavonoide.