Invasion origin, rapid population expansion, and the lack of genetic structure of cotton bollworm (Helicoverpa armigera) in the Americas
| Autor: | Rogério Martins Gonçalves, Celso Omoto, Ana Maria Lima de Azeredo-Espin, Alberto S. Corrêa, Jose Carlos Verle Rodrigues, Thiago Mastrangelo, Daniel F. Paulo |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
invasive pest Range (biology) Population putative hybrids Helicoverpa armigera 010603 evolutionary biology 01 natural sciences 03 medical and health sciences lcsh:QH540-549.5 Genetic variation education Ecology Evolution Behavior and Systematics 030304 developmental biology Nature and Landscape Conservation Local adaptation Original Research 0303 health sciences education.field_of_study Genetic diversity invasion route Ecology biology fungi biology.organism_classification Genetic marker Genetic structure cotton bollworm lcsh:Ecology Americas MARIPOSA ORIENTAL |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Vol 9, Iss 13, Pp 7378-7401 (2019) Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 2045-7758 |
| Popis: | In 2013, Helicoverpa armigera (Hübner) (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). |
| Databáze: | OpenAIRE |
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