Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Brazil: the Big Outbreak Monitored by Light Traps

The first detection of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Brazil pointed to a gloomy future for South American agriculture in the 2012/2013 harvest, and insecticide sales increased exponentially during 2013 and 2014. However, after this outbreak, the population of this insect...

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Bibliographic Details
Published in:	Neotropical entomology Vol. 50; no. 1; pp. 53 - 67
Main Authors:	Specht, Alexandre, Sosa-Gómez, Daniel Ricardo, Rios, Danielly Albuquerque Medeiros, Claudino, Vander Célio Matos, Paula-Moraes, Silvana Vieira, Malaquias, Juaci Vitória, Silva, Fernando Antônio Macena, Roque-Specht, Vânia Ferreira
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-02-2021
Subjects:	Agriculture Behavior and Bionomics Biomedical and Life Sciences Ecology Entomology Life Sciences population variations Biological invasion climatic factors ENSO long time-series study integrated pest management
Online Access:	Get full text
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Summary:	The first detection of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Brazil pointed to a gloomy future for South American agriculture in the 2012/2013 harvest, and insecticide sales increased exponentially during 2013 and 2014. However, after this outbreak, the population of this insect returned to manageable levels. This study documents data on H. armigera moth collection using light traps during the outbreak in two locations: (a) western region of the state of Bahia, including population levels of H. armigera and main noctuid pests during the big outbreak (February and March 2013); (b) Federal District, including monthly data for five growing seasons (July 2012–June 2017). During the outbreak, an average of 527.3 moths were collected per trap (cotton crop, March) in the western region of Bahia each night, while the maximum average in the Federal District was 75.4 moths (January). The number of moths decreased in the following growing seasons, and in October 2016, the maximum number was 2.8 moths per trap. Aspects related to the variations of H. armigera and Helicoverpa zea (Boddie) populations, including the study of phenology and relationship with climatic factors and Oceanic Niño Index, were analyzed and discussed. All aspects are approached to contribute to the management of lepidopteran pests, especially H. armigera , in the productive systems of the Brazilian Cerrado.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1519-566X 1678-8052
DOI:	10.1007/s13744-020-00836-0