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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Invasion origin, rapid population expansion, and the lack of genetic structure of cotton bollworm (Helicoverpa armigera) in the Americas

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Goncalves, Rogerio Martins [1, 2] ; Mastrangelo, Thiago [3] ; Verle Rodrigues, Jose Carlos [4] ; Paulo, Daniel Fernando [1, 2] ; Omoto, Celso [5] ; Correa, Alberto Soares [5] ; Lima de Azeredo-Espin, Ana Maria [1, 2]
Total Authors: 7
[1] State Univ Campinas UNICAMP, Inst Biol, Dept Genet Evolut & Bioagents, Campinas, SP - Brazil
[2] State Univ Campinas UNICAMP, Grad Program Genet & Mol Biol, Inst Biol, Campinas, SP - Brazil
[3] Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba - Brazil
[4] Univ Puerto Rico, Ctr Excellence Quarantine & Invas Species, San Juan, PR 00936 - USA
[5] Univ Sao Paulo, ESALQ, Luiz de Queiroz Coll Agr, Dept Entomol & Acarol, Piracicaba - Brazil
Total Affiliations: 5
Document type: Journal article
Source: ECOLOGY AND EVOLUTION; v. 9, n. 13, p. 7378-7401, JUL 2019.
Web of Science Citations: 2

In 2013, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) was officially declared as present in Brazil and, after two years, the species was detected in the Caribbean and North America. Information on genetic features and accurate distribution of pests is the basis for agricultural protection policies. Furthermore, such knowledge is imperative to develop control strategies, understand the geographical range, and genetic patterns of this species in the Americas. Here, we carried out the widest sampling of H. armigera in the South American continent and Puerto Rico, after we estimated the diversity, demographic parameters, and genetic structure. The Internal Transcribed Spacer 1 (ITS1) nuclear marker was used to investigate the presence of putative hybrids between H. armigera and H. zea, and they were observed at a frequency of 1.5%. An ABC analysis, based in COI gene fragment, suggested Europe as the origin of South America specimens of H. armigeraand following a movement northward through the Caribbean. Three mtDNA genes and three nDNA markers revealed high genetic diversity distributed without the defined population structure of H. armigera in South America. Most of the genetic variation is within populations with a multidirectional expansion of H. armigera among morphoclimatic regions. High genetic diversity, rapid population expansion, and hybridization have implications for pest management since they suggest that adaptive alleles are spread through wide areas in South America that favor rapid local adaptation of H. armigera to new and disturbed environments (e.g., in agricultural areas). (AU)

FAPESP's process: 14/11495-3 - A demographic and adaptive approach for the development of sustainable management strategies of pest control to the Brazilian agroecosystem
Grantee:Alberto Soares Corrêa
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 14/10504-9 - Genetic diversity and population structure of the bollworm Helicoverpa armigera (Lepidoptera: Noctuidae) recently introduced in South America
Grantee:Rogério Martins Gonçalves
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 18/04478-6 - Molecular Characterization of Chemosensory Genes and Transcriptome of Antenna of Screwworm fly, Cochliomyia hominivorax (Diptera: Calliphoridae)
Grantee:Ana Maria Lima de Azeredo-Espin
Support Opportunities: Regular Research Grants
FAPESP's process: 15/02079-9 - Genomics of Cochliomyia hominivorax (Diptera: Calliphoridae): structural and functional analyses.
Grantee:Ana Maria Lima de Azeredo-Espin
Support Opportunities: Regular Research Grants