Abstract
O uso de inseticidas mais tóxicos para uma praga do que a saúde natural pode favorecer o salvamento desses organismos benéficos. Este estudo teve como objetivos fisiológicos distanciadores de inseticidas de separações científicas para Vespidae Protonectarina sylveirae (Saussure, 1854) e Brachygastra lecheguana. (Latterille, 1824) e espessura de cutícula para avaliação da tolerância entre os 2 anos estes mesmos inseticidas. Como imersas foram folhas de milho (10 x 10 cm) em solução inseticida em dose (100%), subdose (50%) e água destilada (controle) por 5 segundos. Nós podemos ler as folhas e depois embalamos em placas de Petri.Como 20 vespas, por placa, receberam 10% de mel e as placas foram fechadas com tecido de organza fino e elastificadas. Após 24 horas, avaliamos uma porcentagem de vespas mortas. O inseticida alfa-cipermetrina foi altamente tóxico para P. sylveirae e B. lecheguana em dose (100%) e subdose (50%). Os inseticidas Novaluron, chlorantraniliprole, spinosad e indoxacarb foram pouco tóxicos para P. sylveirae e B. lecheguana. dose (100%) e subdose (50%). A alta toxicidade dos inseticidas metomil + novalurom, clorantraniliprole + lambda-cialotrina e deltametrina a P. sylveirae corresponde à menor espessura da cutícula.Portanto, os inseticidas novalurom, clorantraniliprole, spinosad e indoxacarb da selectividade fisiológica para P. sylveirae e B. lecheguana .
Highlights
This study aimed to evaluate the physiological selectivity of insecticides from different chemical groups, with the respective dose (100%) and subdose (50%) for maize, P. sylveirae and B. lecheguana wasps, and cuticle thickness of predatory wasps in order to evaluate the tolerance between the two species with the same insecticides
Methanyl + novaluron, chlorantraniliprole + lambda-cyhalothrin and deltamethrin were highly toxic to P. sylveirae and moderately toxic to B. lecheguana in dose (100%)
Deltamethrin was highly toxic in dose (100%) and subdose (50%) to P. sylveirae and B. lecheguana (100% mortality) in the physiological selectivity study by Galvan et al (2002)
Summary
Fall armyworm Spodoptera frugiperda (Smith & Abbot, 1797) (Lepidoptera: Noctuidae) is a polyphagous pest capable of causing significant damage in maize, Zea mays L., soy, Glycine max L. and cotton, Gossypium hirsitum L. (Nagoshi, 2009; Bueno et al, 2011; Aguierre et al, 2016). Fall armyworm Spodoptera frugiperda (Smith & Abbot, 1797) (Lepidoptera: Noctuidae) is a polyphagous pest capable of causing significant damage in maize, Zea mays L., soy, Glycine max L. and cotton, Gossypium hirsitum L. S. frugiperda caterpillars can occur on maize throughout the plant canopy. Economic damage has already been reported for $ 3 billion a year in Africa (Rodriguez-del-bosque et al, 2011; Jeger et al, 2017; Maiga et al, 2017). Controlling this pest can occur by cultural, chemical and biological (Trichogramma pretiosum) methods and using plants with different expressions of Bacillus thurigiencis (Bt) proteins (Bt) (Capineira, 2005; Balestrin & Bordin, 2016; Bortolotto et al, 2016; Roel et al, 2017). Overuse of insecticides has resulted in the development of resistant populations and negative impacts on natural enemies (Yu et al, 2003; Romeis et al, 2006; Ahmad & Arif, 2010)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
