Flight height of Brazilian rice insect pests

• Autor(a) principal: Hickel, Eduardo Rodrigues
• Data de Publicação: 2020
• Outros Autores: Dal Zotto, Débora
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Agropecuária Catarinense (Online)
• Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/796
• topic: insect ecology; dispersion; behavior; integrated pest management; Oryza sativa.; ecologia de insetos; dispersão; comportamento; manejo de pragas; Oryza sativa

The South American rice water weevil, Oryzophagus oryzae (Costa Lima), and the big rice water weevil, Helodytes sp. (both Coleoptera: Curculionidae), the rice caseworm, Nymphula spp. and the white stem borer, Rupela albinella Cramer (both Lepidoptera: Pyralidae), the rice stink bug, Oebalus spp. and the black beetle, Euetheola humilis (Burmeister) (Coleoptera: Scarabaeidae) are among insect pests of irrigated rice in Brazil. The dispersal of these insects is extensive, but their ability of crossing vertical obstacles in the flight path is unknown. So, the aim of this research was to verify the flight height of Brazilian rice insect pests. Two light traps, model “Luiz de Queiroz”, were set in a irrigated rice field at Epagri Experimental Station, in Itajaí, SC, one at the top level of plants and the other six meters high. From September 2014 to December 2015 the light traps were turned on daily, from 4pm to 9am, except from May to August of 2015 when they remain turned off. All the pest species reached 6m flight height and, therefore, can overcome obstacles to this point. However, only O. oryzae and E. humilis usually fly by this layer.