Performance of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) larvae in different food sources

Recently observed in Brazil, Helicoverpa armigera became a relevant pest due to its rapid spread and the economic importance of crops in which it has established, such as soybean and maize. Understanding its establishment process in different regions and production systems, as well as the population...

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Bibliographic Details
Published in:Pesquisa agropecuária tropical 2015-12, Vol.45 (4), p.480-485
Main Authors: Crislaine Sartori Suzana, Raquel Damiani, Letícia Slongo Fortuna, José Roberto Salvadori
Format: Article
Language:English
Subjects:
biological parameters
host plants
Insect pest
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Summary:Recently observed in Brazil, Helicoverpa armigera became a relevant pest due to its rapid spread and the economic importance of crops in which it has established, such as soybean and maize. Understanding its establishment process in different regions and production systems, as well as the population dynamics of a polyphagous pest, as the basis for its management, depends on the knowledge of the effect of plant species as food sources on the pest biology. A laboratory experiment was conducted, supplying the caterpillars with reproductive organs of soybean, maize, canola, black oat, oat, turnip and ryegrass. It was concluded that the different food sources affect the larval development of H. armigera. Maize and wheat ears and canola siliques are the best food sources for the development of H. armigera. Ryegrass ears, on the other hand, are the worst ones. Black oat and oat panicles and turnip siliques are less suitable than soybean pods as food sources for the caterpillars.
ISSN:1983-4063
DOI:10.1590/1983-40632015v4536733