Diatraea saccharalis history of colonization in the Americas. The case for human-mediated dispersal

Author(s):Show less -

Francischini, Fabricio J. B. ^[1] ; Cordeiro, Erick M. G. ^[2] ; de Campos, Jaqueline B. ^[1] ; Alves-Pereira, Alessandro ^[3] ; Gomes Viana, Joao Paulo ^[1] ; Wu, Xing ^[4] ; Wei, Wei ^[4] ; Brown, Patrick ^[4] ; Joyce, Andrea ^[5] ; Murua, Gabriela ^[6] ; Fogliata, Sofia ^[6] ; Clough, Steven J. ^{[4, 7]} ; Zucchi, Maria I. ^{[1, 8]}

Affiliation

^[1] Univ Estadual Campinas, Inst Biol, Grad Program Genet & Mol Biol, Campinas, SP - Brazil

^[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr USP ESALQ, Dept Entomol & Acarol, Piracicaba, SP - Brazil

^[3] Univ Estadual Campinas, Inst Biol, Dept Plant Biol, Campinas, SP - Brazil

^[4] Univ Illinois, Dept Crop Sci, Urbana, IL 61801 - USA

^[5] Univ Calif Merced, Dept Publ Hlth, Merced, CA - USA

^[6] Consejo Nacl Invest Cient & Tecn, EEAOC, ITANOA, San Miguel De Tucuman - Argentina

^[7] USDA ARS, Urbana, IL - USA

^[8] Agribusiness Technol Dev Sao Paulo APTA, Lab Conservat Genet & Genom, Piracicaba, SP - Brazil

• Document type: Journal article
• Source: PLoS One; v. 14, n. 7 JUL 24 2019.
• Web of Science Citations: 0

Abstract

The sugarcane borer moth, Diatraea saccharalis, is one of the most important pests of sugarcane and maize crops in the Western Hemisphere. The pest is widespread throughout South and Central America, the Caribbean region and the southern United States. One of the most intriguing features of D. saccharalis population dynamics is the high rate of range expansion reported in recent years. To shed light on the history of colonization of D. saccharalis, we investigated the genetic structure and diversity in American populations using single nucleotide polymorphism (SNPs) markers throughout the genome and sequences of the mitochondrial gene cytochrome oxidase (COI). Our primary goal was to propose possible dispersal routes from the putative center of origin that can explain the spatial pattern of genetic diversity. Our findings showed a clear correspondence between genetic structure and the geographical distributions of this pest insect on the American continents. The clustering analyses indicated three distinct groups: one composed of Brazilian populations, a second group composed of populations from El Salvador, Mexico, Texas and Louisiana and a third group composed of the Florida population. The predicted time of divergence predates the agriculture expansion period, but the pattern of distribution of haplotype diversity suggests that human-mediated movement was most likely the factor responsible for the widespread distribution in the Americas. The study of the early history of D. saccharalis promotes a better understanding of range expansion, the history of invasion, and demographic patterns of pest populations in the Americas. (AU)

• FAPESP's process: 17/02393-0 - Resistance to insecticide in Euchistus heros (Hemiptera: Pentatomidae): genetic diversity and association mapping of resistance genes
• Grantee: Erick Mauricio Goes Cordeiro
• Support type: Scholarships in Brazil - Post-Doctorate