Baseline Plant-to-Plant Larval Movement of Spodoptera eridania in Bt and Non-Bt Soybean and Its Possible Impacts on IRM

Autor(es)

Fanela, Thiago L. M. ^[1] ; Baldin, Edson L. L. ^[1] ; Hunt, Thomas E. ^[2] ; Faria, Rodrigo D. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Sch Agr Sci, Dept Plant Protect, Botucatu, SP - Brazil

^[2] Univ Nebraska Lincoln, Haskell Agr Lab, Concord, NE 68728 - USA

• Tipo de documento: Artigo Científico
• Fonte: Journal of Economic Entomology; v. 113, n. 4, p. 1741-1752, AUG 2020.
• Citações Web of Science: 0

Resumo

The widespread use of transgenic technologies has led to the emergence of insect populations resistant to Bt toxins. Some lepidopteran pest species also appear to naturally have some level of tolerance to certain proteins, such as some species of Spodoptera to Cry1Ac. One of the main strategies to manage resistance is the use of refuge areas, the success of which is in part dependent on larval movement of the target pest. Thus, in order to assess the viability of a refuge strategy addressing Spodoptera eridania Stoll (Lepidoptera: Noctuidae) in Bt soybean, it was evaluated the larval movement across plants in Bt and non-Bt soybean, as well as the larval development and mortality on Bt and non-Bt soybean cultivars. We concluded that apparent S. eridania incomplete resistance resulting from high larval mortality and low adaptability on Bt plants, high larval dispersal, nondirectional larval movement, and random larval spatial dispersion suggest that structured refuge is more suitable than mixed refuge for managing resistance in S. eridania populations. (AU)

• Processo FAPESP: 17/08086-2 - Interações intraguilda de Spodoptera spp. e caracterização de movimento larval de Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) em soja Bt e não Bt
• Beneficiário: Thiago Luis Martins Fanela
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 16/19302-5 - Interações intraguilda de Spodoptera spp. e caracterização de movimento larval de Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) em soja Bt e não Bt
• Beneficiário: Thiago Luis Martins Fanela
• Modalidade de apoio: Bolsas no Brasil - Doutorado