impact of the number of spodoptera frugiperda egg layers on parasitism by trichogramma atopovirilia impacto do número de camadas de ovos de spodoptera frugiperda no parasitismo por trichogramma atopovirilia

Clicks: 310
ID: 219082
2005
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Abstract
Egg parasitoids of the genus Trichogramma (Hymenoptera: Trichogrammatidae) can be found in several crops attacking Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) eggs. It is therefore necessary to demonstrate the capacity of these natural enemies in suppressing populations of the pest to allow them to be used in biological control programs against that species. This work had the objective of evaluating the impact of egg layer distribution in S. frugiperda egg masses on the parasitism capacity of Trichogramma atopovirilia Oatman & Platner, 1983. Masses containing one, two, and three layers were used as treatments, and 1.6 parasitoid per egg of the pest were released. Parasitism percentage differences were observed among the three types of masses under study, on average 66.24 ± 8.56%, 45.20 ± 6.20%, and 40.10± 3.46% for egg masses with one, two, and three layers, respectively, demonstrating the potential of use of the parasitoid for the control of fall armyworm.
Parasitóides de ovos do gênero Trichogramma (Hymenoptera: Trichogrammatidae) ocorrem em diversas culturas atacando ovos de Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) sendo necessário que se demonstre a capacidade desses inimigos naturais em suprimir a população da praga para que eles possam ser utilizados em programas de controle biológico daquela espécie. O trabalho teve como objetivo avaliar o impacto da distribuição dos ovos em camadas nas posturas de S. frugiperda sobre a capacidade de parasitismo de Trichogramma atopovirilia Oatman & Platner, 1983. Foram utilizadas como tratamentos posturas com uma, duas e três camadas e liberado 1.6 parasitóide por ovo da praga. Observaram-se diferenças quanto à porcentagem de parasitismo entre os três tipos de posturas estudados, sendo em média de 66,24 ± 8,56%, 45,20 ± 6,20% e 40,10 ± 3,46% para posturas com uma, duas e três camadas respectivamente, mostrando o potencial de utilização do parasitóide para o controle da lagarta-do-cartucho do milho.
Reference Key
beserra2005scientiaimpact Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Eduardo Barbosa Beserra;José Roberto Postali Parra
Journal journal of the iranian chemical society
Year 2005
DOI
10.1590/S0103-90162005000200016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200016
Keywords
fall armyworm insecta controle biológico

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