Colonization history of the western corn rootworm (Diabrotica virgifera virgifera) in North America: insights from random forest ABC using microsatellite data
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First described from western Kansas, USA, the western corn rootworm, Diabrotica virgifera virgifera, is one of the worst pests of maize. The species is generally thought to be of Mexican origin and to have incidentally followed the expansion of maize cultivation into North America thousands of years ago. However, this hypothesis has never been investigated formally. In this study, the genetic variability of samples collected throughout North America was analysed at 13 microsatellite marker loci to explore precisely the population genetic structure and colonization history of D. v. virgifera. In particular, we used up-to-date approximate Bayesian computation methods based on random forest algorithms to test a Mexican versus a central-USA origin of the species, and to compare various possible timings of colonization. This analysis provided strong evidence that the origin of D. v. virgifera was southern (Mexico, or even further south). Surprisingly, we also found that the expansion of the species north of its origin was recent—probably not before 1100 years ago—thus indicating it was not directly associated with the early history of maize expansion out of Mexico, a far more ancient event.
KeywordsBiological invasion Invasion routes Approximate Bayesian computation Maize
We thank our colleagues Rosanna Giordano, Stephan Toepfer, Uwe Stoltz, Kyung Seok Kim, Sue Ratcliff, Greg Cronholm, Lee French, Lance Meinke, Brendon Reardon, Eli Levine, Bruce Eisley, Dennis Calvin, Joanne Whalen and Ken Wise for D. v. virgifera beetles and DNA samples. We also thank Emeline Deleury, Arnaud Estoup and Andrea Benazzo for scripts to compute summary statistics. We also thank Alexandra Auguste, Paulette Flacchi and Marie-José Odonne for technical and administrative assistance. This work was funded by grants from ANR projects Bioinv4I and Emile, and from the French Agropolis Fondation (Labex Agro-Montpellier, BIOFIS).
EL and TG designed the study. TS managed the collection of samples. MC, NM and AB genotyped the samples. EL and TG analysed the data. EL, MC, NM, TS and TG wrote the paper. All authors have revised and approved the final manuscript.
- Anderson E, Brown WL (1952) The history of the common maize varieties of the United States Corn Belt. Agric Hist 26:2–8Google Scholar
- Benjamini Y, Hochberg Y (1995) Controlling the false discovery rate—a practical and powerful approach to multiple testing. J R Stat Soc Ser B Methodol 57:289–300Google Scholar
- Buckler ES, Stevens NM (2006) Maize origins, domestication, and selection. In: Motley TJ, Zerega N, Cross H (eds) Darwin’s Harvest: new approaches to the origins, evolution, and conservation of crops, 1st edn. Columbia University Press, pp 67–90Google Scholar
- Coltrain JB, Janetski JC, Carlyle SW (2010) The stable- and radio-isotope chemistry of western basketmaker burials: implications for early puebloan diets and origins. Am Archaeol 72:301–321Google Scholar
- Cornuet J-M, Pudlo P, Veyssier J et al (2014) DIYABC v2.0: a software to make approximate Bayesian computation inferences about population history using single nucleotide polymorphism. DNA sequence and microsatellite data. Bioinformatics 30:1187–1189. doi: 10.1093/bioinformatics/btt763 CrossRefPubMedGoogle Scholar
- Horn GH (1893) The galerucini of Boreal America. Trans Am Entomol Soc 20:57–136Google Scholar
- Krysan JL, Smith RF (1987) Systematics of the virgifera species group of Diabrotica (Coleoptera: Chrysomelidae: Galerucinae). Entomography 5:375–484Google Scholar
- Langella O (1999) Populations 1.2.32 (02/13/2011): a population genetic softwareGoogle Scholar
- Le Conte JL (1868) New Coleoptera collected on the survey for the extension of the Union Pacific Railway, E. D. from Kansas to Fort Craig, New Mexico. Trans Am Entomol Soc 2:49–59Google Scholar
- Lombaert E, Guillemaud T, Thomas CE et al (2011) Inferring the origin of populations introduced from a genetically structured native range by approximate Bayesian computation: case study of the invasive ladybird Harmonia axyridis. Mol Ecol 20:4654–4670. doi: 10.1111/j.1365-294X.2011.05322.x CrossRefPubMedGoogle Scholar
- Metcalf RL (1986) The ecology of insecticides and the chemical control of insects. In: Kogan M (ed) Ecological theory and integrated pest management practice. Wiley, New York, pp 251–297Google Scholar
- Moeser J, Hibbard BE (2005) A synopsis of the nutritional ecology of larvae and adults of Diabrotica virgifera virgifera (LeConte) in the new and old world—nouvelle cuisine for the invasive maize pest Diabrotica virgifera virgifera in Europe? In: Vidal S, Kuhlmann U, Edwards CR (eds) Western corn rootworm: ecology and management, 1st edn. Cabi Publishing, pp 41–65Google Scholar
- Nei M (1987) Molecular evolutionary genetics. Columbia University Press, New YorkGoogle Scholar
- Raynal L, Marin J-M, Pudlo P, et al (2017) ABC random forests for Bayesian parameter inference. arXiv:1605.05537Google Scholar
- Smith RF (1966) Distributional patterns of selected western north American insects: the distribution of Diabroticites in western north America. Bull Entomol Soc Am 12:108–110Google Scholar
- Smith B (2017) Tracing the initial diffusion of maize in North America. In: Boivin N, Petraglia M, Crassard R (eds) From colonisation to globalisation: species movements in human history, 1st edn. Cambridge University Press, Cambridge, pp 332–348Google Scholar
- Weir BS, Cockerham C (1984) Estimating F-statistics for the analysis of population structure. Evolution (NY) 38:1358–1370Google Scholar