Population expansion and genomic adaptation to agricultural environments of the soybean looper, Chrysodeixis includens

Autor(es)

Silva, Cleane S. ^[1] ; Cordeiro, Erick M. G. ^[1] ; de Paiva, Julia B. ^[1] ; Dourado, Patrick M. ^[2] ; Carvalho, Renato A. ^[2] ; Head, Graham ^[3] ; Martinelli, Samuel ^[3] ; Correa, Alberto S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Entomol & Acarol, BR-13418900 Piracicaba, SP - Brazil

^[2] Bayer Crop Sci, Sao Paulo - Brazil

^[3] Bayer Crop Sci, Chesterfield, MO - USA

• Tipo de documento: Artigo Científico
• Fonte: EVOLUTIONARY APPLICATIONS; v. 13, n. 8 APR 2020.
• Citações Web of Science: 4

Resumo

Evolutionary studies of insect pests improve our ability to anticipate problems in agricultural ecosystems, such as pest outbreaks, control failures, or expansions of the host range. Here, we investigated the mechanisms underlying the evolutionary processes behind the recent census size expansion and local adaptation of Chrysodeixis includens. First, we sequenced mitochondrial markers to conduct a phylogeographic investigation of C. includens historical processes. Then, we combined a de novo genotyping-by-sequencing approach with a study of agricultural landscapes to uncover recent processes of adaptation. Primarily, we found low genetic diversity across all markers and clear indications of a recent demographic expansion. We also found a lack of significant isolation by distance (IBD), and weak or absent genetic structure considering geographic locations. However, we did find initial signs of population differentiation that were associated with host plant types (i.e., soybean and cotton). Agricultural landscape attributes, including soybean crops, were significantly associated with putative markers under positive selection. Moreover, positive selection associated with host differentiation was putatively linked to digestive enzymes. This study showed how landscape composition and host plants can affect the evolutionary process of agricultural pest insects such as C. includens. (AU)

• Processo FAPESP: 17/02393-0 - Resistência de Euschistus heros (Hemiptera: Pentatomidae) a inseticidas: diversidade genética e detecção de marcadores moleculares associados a genes de resistência
• Beneficiário: Erick Mauricio Goes Cordeiro
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/04159-2 - Um enfoque demográfico e adaptativo visando a construção de estratégias sustentáveis de manejo de pragas agrícolas para o agroecossistema brasileiro
• Beneficiário: Júlia Barbosa de Paiva
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico