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Trujillo D, Mastrangelo T, Estevez de Jensen C, Verle Rodrigues JC, Lawrie R, Massey SE. Accurate identification of Helicoverpa armigera-Helicoverpa zea hybrids using genome admixture analysis: implications for genomic surveillance. FRONTIERS IN INSECT SCIENCE 2024; 4:1339143. [PMID: 38469344 PMCID: PMC10926370 DOI: 10.3389/finsc.2024.1339143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 02/08/2024] [Indexed: 03/13/2024]
Abstract
Helicoverpa armigera, the cotton bollworm moth, is one of the world's most important crop pests, and is spreading throughout the New World from its original range in the Old World. In Brazil, invasive H. armigera has been reported to hybridize with local populations of Helicoverpa zea. The correct identification of H. armigera-H. zea hybrids is important in understanding the origin, spread and future outlook for New World regions that are affected by outbreaks, given that hybridization can potentially facilitate H. zea pesticide resistance and host plant range via introgression of H. armigera genes. Here, we present a genome admixture analysis of high quality genome sequences generated from two H. armigera-H. zea F1 hybrids generated in two different labs. Our admixture pipeline predicts 48.8% and 48.9% H. armigera for the two F1 hybrids, confirming its accuracy. Genome sequences from five H. zea and one H. armigera that were generated as part of the study show no evidence of hybridization. Interestingly, we show that four H. zea genomes generated from a previous study are predicted to possess a proportion of H. armigera genetic material. Using unsupervised clustering to identify non-hybridized H. armigera and H. zea genomes, 8511 ancestry informative markers (AIMs) were identified. Their relative frequencies are consistent with a minor H. armigera component in the four genomes, however its origin remains to be established. We show that the size and quality of genomic reference datasets are critical for accurate hybridization prediction. Consequently, we discuss potential pitfalls in genome admixture analysis of H. armigera-H. zea hybrids, and suggest measures that will improve such analyses.
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Affiliation(s)
- Dario Trujillo
- Department of Agro-Environmental Sciences, University of Puerto Rico - Mayaguez, Mayaguez, Puerto Rico
| | - Thiago Mastrangelo
- Universidade de São Paulo, Centro de Energia Nuclear na Agricultura, Piracicaba, SP, Brazil
| | | | | | - Roger Lawrie
- Center for Excellence in Quarantine and Invasive Species (CEQUIS), Estacion Experimental Agricola, San Juan, Puerto Rico
| | - Steven E. Massey
- Department of Biology, University of Puerto Rico - Rio Piedras, San Juan, Puerto Rico
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2
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Featherstone LA, McGaughran A. The effect of missing data on evolutionary analysis of sequence capture bycatch, with application to an agricultural pest. Mol Genet Genomics 2024; 299:11. [PMID: 38381254 PMCID: PMC10881687 DOI: 10.1007/s00438-024-02097-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 12/29/2023] [Indexed: 02/22/2024]
Abstract
Sequence capture is a genomic technique that selectively enriches target sequences before high throughput next-generation sequencing, to generate specific sequences of interest. Off-target or 'bycatch' data are often discarded from capture experiments, but can be leveraged to address evolutionary questions under some circumstances. Here, we investigated the effects of missing data on a variety of evolutionary analyses using bycatch from an exon capture experiment on the global pest moth, Helicoverpa armigera. We added > 200 new samples from across Australia in the form of mitogenomes obtained as bycatch from targeted sequence capture, and combined these into an additional larger dataset to total > 1000 mitochondrial cytochrome c oxidase subunit I (COI) sequences across the species' global distribution. Using discriminant analysis of principal components and Bayesian coalescent analyses, we showed that mitogenomes assembled from bycatch with up to 75% missing data were able to return evolutionary inferences consistent with higher coverage datasets and the broader literature surrounding H. armigera. For example, low-coverage sequences broadly supported the delineation of two H. armigera subspecies and also provided new insights into the potential for geographic turnover among these subspecies. However, we also identified key effects of dataset coverage and composition on our results. Thus, low-coverage bycatch data can offer valuable information for population genetic and phylodynamic analyses, but caution is required to ensure the reduced information does not introduce confounding factors, such as sampling biases, that drive inference. We encourage more researchers to consider maximizing the potential of the targeted sequence approach by examining evolutionary questions with their off-target bycatch where possible-especially in cases where no previous mitochondrial data exists-but recommend stratifying data at different genome coverage thresholds to separate sampling effects from genuine genomic signals, and to understand their implications for evolutionary research.
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Affiliation(s)
- Leo A Featherstone
- Research School of Biology, Division of Ecology and Evolution, Australian National University, Canberra, ACT, 2601, Australia
- Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, 3000, Australia
| | - Angela McGaughran
- Research School of Biology, Division of Ecology and Evolution, Australian National University, Canberra, ACT, 2601, Australia.
- Te Aka Mātuatua, School of Science, University of Waikato, Private Bag 3105, Hamilton, 3240, New Zealand.
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3
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Alves GB, Lemes TSO, Pereira EJG, Jurat-Fuentes JL, Smagghe G, Santos GR, Haddi K, Corrêa RFT, Melo FL, Jumbo LOV, Oliveira EE, Peron AJ, Ribeiro BM, Aguiar RWS. Draft genome of neotropical Bacillus thuringiensis UFT038 and its potential against lepidopteran soybean pests. Folia Microbiol (Praha) 2024; 69:91-99. [PMID: 38017300 DOI: 10.1007/s12223-023-01114-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/15/2023] [Indexed: 11/30/2023]
Abstract
Bacillus thuringiensis (Bt) is known for its Cry and Vip3A pesticidal proteins with high selectivity to target pests. Here, we assessed the potential of a novel neotropical Bt strain (UFT038) against six lepidopteran pests, including two Cry-resistant populations of fall armyworm, Spodoptera frugiperda. We also sequenced and analyzed the genome of Bt UFT038 to identify genes involved in insecticidal activities or encoding other virulence factors. In toxicological bioassays, Bt UFT038 killed and inhibited the neonate growth in a concentration-dependent manner. Bt UFT038 and HD-1 were equally toxic against S. cosmioides, S. frugiperda (S_Bt and R_Cry1 + 2Ab populations), Helicoverpa zea, and H. armigera. However, larval growth inhibition results indicated that Bt UFT038 was more toxic than HD-1 to S. cosmioides, while HD-1 was more active against Chrysodeixis includens. The draft genome of Bt UFT038 showed the cry1Aa8, cry1Ac11, cry1Ia44, cry2Aa9, cry2Ab35, and vip3Af5 genes. Besides this, genes encoding the virulence factors (inhA, plcA, piplC, sph, and chi1-2) and toxins (alo, cytK, hlyIII, hblA-D, and nheA-C) were also identified. Collectively, our findings reveal the potential of the Bt UFT038 strain as a source of insecticidal genes against lepidopteran pests, including S. cosmioides and S. frugiperda.
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Affiliation(s)
- Giselly B Alves
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Timóteo S O Lemes
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Eliseu J G Pereira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Juan L Jurat-Fuentes
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Gil R Santos
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Khalid Haddi
- Departamento de Entomologia, Universidade Federal de Lavras, Lavras, MG, 37200-900, Brazil
| | - Roberto F T Corrêa
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Fernando L Melo
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Luis O Viteri Jumbo
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
- Carrera de Agronomía, Universidad Nacional de Loja (UNL), Loja, 110103, Ecuador
| | - Eugenio E Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Antônio J Peron
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Bergmann M Ribeiro
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Raimundo W S Aguiar
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil.
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4
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Porretta D, Canestrelli D. The ecological importance of hybridization. Trends Ecol Evol 2023; 38:1097-1108. [PMID: 37620217 DOI: 10.1016/j.tree.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023]
Abstract
Hybridization as an evolutionary process has been studied in depth over the past few decades. Research has focused on its role in shaping reproductive barriers, its adaptive value, and its genomic consequences. In contrast, our knowledge of ecological dimensions of hybridization is still in its infancy, despite hybridization being an inherently ecological interaction. Using examples from various organisms, we show that hybridization can affect and be affected by non-reproductive interactions, including predation, competition, parasitism, mutualism, commensalism, and organism-environment interactions, with significant implications for community structure and ecosystem functioning. However, since these dimensions of hybridization have mostly been revealed from studies designed to decipher other evolutionary processes, we argue that much of the eco-evolutionary importance of hybridization is yet to be discovered.
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Affiliation(s)
- Daniele Porretta
- Department of Environmental Biology, Sapienza University of Rome, Italy.
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Andersen JC, Havill NP, Chandler JL, Boettner GH, Griffin BP, Elkinton JS. Seasonal differences in the timing of flight between the invasive winter moth and native Bruce spanworm promotes reproductive isolation. ENVIRONMENTAL ENTOMOLOGY 2023; 52:740-749. [PMID: 37459357 DOI: 10.1093/ee/nvad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 05/16/2023] [Accepted: 06/23/2023] [Indexed: 08/19/2023]
Abstract
The European winter moth, Operophtera brumata L. (Lepidoptera: Geometridae), was accidentally introduced to North America on at least 4 separate occasions, where it has been hybridizing with the native Bruce spanworm, O. bruceata Hulst, at rates up to 10% per year. Both species are known to respond to the same sex pheromones and to produce viable offspring, but whether they differ in the seasonal timing of their mating flights is unknown. Therefore, we collected adult male moths weekly along 2 transects in the northeastern United States and genotyped individuals using polymorphic microsatellite markers as males of these 2 species cannot be differentiated morphologically. Along each transect, we then estimated the cumulative proportions (i.e., the number of individuals out of the total collected) of each species on each calendar day. Our results indicate that there are significant differences between the species regarding their seasonal timing of flight, and these allochronic differences likely are acting to promote reproductive isolation between these 2 species. Lastly, our results suggest that the later flight observed by winter moth compared to Bruce spanworm may be limiting its inland spread in the northeastern United States because of increased exposure to extreme winter events.
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Affiliation(s)
- Jeremy C Andersen
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Nathan P Havill
- USDA-Forest Service, Northern Research Station, Hamden, CT 06514, USA
| | - Jennifer L Chandler
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - George H Boettner
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Brian P Griffin
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Joseph S Elkinton
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
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6
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Marques LH, Ishizuka TK, Pereira RR, Istchuk AN, Rossetto J, Moscardini VF, E Silva OANB, Santos AC, Nowatzki T, Dahmer ML, Sethi A, Storer NP, Gontijo PC, Netto JC, Weschenfelder MAG, de Almeida PG, Bernardi O. Performance of cotton expressing Cry1Ac, Cry1F and Vip3Aa19 insecticidal proteins against Helicoverpa armigera, H. zea and their hybrid progeny, and evidence of reduced susceptibility of a field population of H. zea to Cry1 and Vip3Aa in Brazil. PLoS One 2023; 18:e0289003. [PMID: 37490504 PMCID: PMC10368247 DOI: 10.1371/journal.pone.0289003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 07/02/2023] [Indexed: 07/27/2023] Open
Abstract
The genetically modified cotton DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 expressing Cry1Ac, Cry1F and Vip3Aa19 from Bacillus thuringiensis Berliner (Bt) has been cultivated in Brazil since the 2020/2021 season. Here, we assessed the performance of DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 cotton expressing Cry1Ac, Cry1F and Vip3Aa19 against Helicoverpa armigera (Hübner), Helicoverpa zea (Boddie), and their hybrid progeny. We also carried out evaluations with DAS-21023-5 × DAS-24236-5 cotton containing Cry1Ac and Cry1F. In leaf-disk bioassays, DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 was effective in controlling neonates from laboratory colonies of H. armigera, H. zea and the hybrid progeny (71.9%-100% mortality). On floral bud bioassays using L2 larvae, H. zea presented complete mortality, whereas H. armigera and the hybrid progeny showed <55% mortality. On DAS-21023-5 × DAS-24236-5 cotton, the mortality of H. armigera on leaf-disk and floral buds ranged from 60% to 73%, whereas mortality of hybrids was <46%. This Bt cotton caused complete mortality of H. zea larvae from a laboratory colony in the early growth stages, but mortalities were <55% on advanced growth stages and on floral buds. In field studies conducted from 2014 to 2019, DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 cotton was also effective at protecting plants against H. armigera. In contrast, a population of H. zea collected in western Bahia in 2021/2022 on Bt cotton expressing Cry1 and Vip3Aa proteins, showed 63% mortality after 30 d, with insects developing into fifth and sixth instars, on DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 cotton. We conclude that H. armigera, H. zea, and their hybrid progeny can be managed with DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 cotton; however we found the first evidence in Brazil of a significant reduction in the susceptibility to DAS-21023-5 × DAS-24236-5 × SYN-IR102-7 cotton of a population of H. zea collected from Bt cotton in Bahia in 2021/2022.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Mark L Dahmer
- Corteva Agriscience, Johnston, IA, United States of America
| | - Amit Sethi
- Corteva Agriscience, Johnston, IA, United States of America
| | | | - Pablo C Gontijo
- Instituto Federal Goiano (IF Goiano), Campus Rio Verde, Rio Verde, GO, Brazil
| | - Jacob C Netto
- Instituto Mato-grossense do Algodão (IMAmt), Primavera do Leste, MT, Brazil
| | | | | | - Oderlei Bernardi
- Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
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7
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Rich M, Noh E, Wang H, Greene J, Gilligan T, Reay-Jones FPF, Turnbull M, Zink F. Field-based recombinase polymerase amplification and lab-based qPCR assays for detection of Helicoverpa armigera. JOURNAL OF ECONOMIC ENTOMOLOGY 2023; 116:973-982. [PMID: 37023722 DOI: 10.1093/jee/toad048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/08/2023] [Accepted: 03/06/2023] [Indexed: 06/14/2023]
Abstract
Helicoverpa armigera (Hübner) is a major crop pest native to Europe, Asia, Australia, and Africa which has recently invaded South America and has caused billions of dollars in agricultural losses. Because of challenges in differentiating between H. armigera and Helicoverpa zea (Boddie), a closely related species native to North and South America, genetic tests have previously been developed to detect H. armigera DNA in pooled samples of moth legs. In this study, a field-based recombinase polymerase amplification (RPA) assay using a lateral flow strip and a qPCR melt curve assay were developed for specific detection of H. armigera DNA in pooled moth samples. In addition, a crude DNA extraction protocol for whole moths was developed to allow rapid preparation of DNA samples. The RPA field test was able to detect ≥ 10 pg of purified H. armigera DNA and the crude DNA of one H. armigera sample in a background of 999 H. zea equivalents. The qPCR assay was able to detect ≥ 100 fg of purified H. armigera DNA and the crude DNA of one H. armigera sample in a background of up to 99,999 H. zea equivalents. Both RPA and qPCR assays detected H. armigera in the crude DNA extracted in the field from a pool of one H. armigera moth and 999 H. zea moths. These newly developed molecular assays to detect H. armigera will contribute to large-scale surveillance programs of H. armigera.
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Affiliation(s)
- Mitchell Rich
- Department of Plant and Environmental Sciences, Edisto Research and Education Center, Clemson University, Blackville, SC, USA
| | - Enoch Noh
- Department of Plant and Environmental Sciences, Edisto Research and Education Center, Clemson University, Blackville, SC, USA
| | - Hehe Wang
- Department of Plant and Environmental Sciences, Edisto Research and Education Center, Clemson University, Blackville, SC, USA
| | - Jeremy Greene
- Department of Plant and Environmental Sciences, Edisto Research and Education Center, Clemson University, Blackville, SC, USA
| | - Todd Gilligan
- USDA-APHIS-PPQ-Science & Technology, Identification Technology Program, Fort Collins, CO, USA
| | - Francis P F Reay-Jones
- Department of Plant and Environmental Sciences, Pee Dee Research and Education Center, Clemson University, Florence, SC, USA
| | - Matt Turnbull
- Department of Biological Sciences, Clemson University, Clemson, SC, USA
| | - Frida Zink
- USDA-APHIS-PPQ-Science & Technology, Identification Technology Program, Fort Collins, CO, USA
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8
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Jose MS, Doorenweerd C, Rubinoff D. Genomics reveals widespread hybridization across insects with ramifications for species boundaries and invasive species. CURRENT OPINION IN INSECT SCIENCE 2023:101052. [PMID: 37150509 DOI: 10.1016/j.cois.2023.101052] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
As the amount of genomic data for non-model taxa grows, it is increasingly clear that gene flow across species barriers in insects is much more common than previously thought. In recent years, the decreased cost and increased accuracy of long-read sequencing has enabled the assembly of high-quality, reference genomes and chromosome maps for non-model insects. With this long-read data we can now not only compare variation across the genome among homologous genes between species, which has been the basis of phylogenetics for more than thirty years, but also tease apart evidence of ancient and recent hybridization and gene flow. The implications of hybridization for species adaptation may be more positive than previously considered, explaining its prevalence across many groups of insects. Unfortunately, due to anthropogenic actions, some pest species appear to be benefitting from hybridization and gene flow, facilitating future invasions.
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Affiliation(s)
- Michael San Jose
- University of Hawai'i at Mānoa, Plant and Environmental Protection Sciences, Entomology Section.
| | - Camiel Doorenweerd
- University of Hawai'i at Mānoa, Plant and Environmental Protection Sciences, Entomology Section.
| | - Daniel Rubinoff
- University of Hawai'i at Mānoa, Plant and Environmental Protection Sciences, Entomology Section.
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Stahlke AR, Chang J, Tembrock LR, Sim SB, Chudalayandi S, Geib SM, Scheffler BE, Perera OP, Gilligan TM, Childers AK, Hackett KJ, Coates BS. A Chromosome-Scale Genome Assembly of a Helicoverpa zea Strain Resistant to Bacillus thuringiensis Cry1Ac Insecticidal Protein. Genome Biol Evol 2023; 15:evac131. [PMID: 35959935 PMCID: PMC9990077 DOI: 10.1093/gbe/evac131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/01/2022] [Accepted: 08/09/2022] [Indexed: 11/14/2022] Open
Abstract
Helicoverpa zea (Lepidoptera: Noctuidae) is an insect pest of major cultivated crops in North and South America. The species has adapted to different host plants and developed resistance to several insecticidal agents, including Bacillus thuringiensis (Bt) insecticidal proteins in transgenic cotton and maize. Helicoverpa zea populations persist year-round in tropical and subtropical regions, but seasonal migrations into temperate zones increase the geographic range of associated crop damage. To better understand the genetic basis of these physiological and ecological characteristics, we generated a high-quality chromosome-level assembly for a single H. zea male from Bt-resistant strain, HzStark_Cry1AcR. Hi-C data were used to scaffold an initial 375.2 Mb contig assembly into 30 autosomes and the Z sex chromosome (scaffold N50 = 12.8 Mb and L50 = 14). The scaffolded assembly was error-corrected with a novel pipeline, polishCLR. The mitochondrial genome was assembled through an improved pipeline and annotated. Assessment of this genome assembly indicated 98.8% of the Lepidopteran Benchmark Universal Single-Copy Ortholog set were complete (98.5% as complete single copy). Repetitive elements comprised approximately 29.5% of the assembly with the plurality (11.2%) classified as retroelements. This chromosome-scale reference assembly for H. zea, ilHelZeax1.1, will facilitate future research to evaluate and enhance sustainable crop production practices.
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Affiliation(s)
- Amanda R Stahlke
- USDA, Agricultural Research Service, Beltsville Agricultural Research Center, Bee Research Laboratory, 10300 Baltimore Avenue, Beltsville, Maryland 20705
| | - Jennifer Chang
- USDA, Agricultural Research Service, Jamie Whitten Delta States Research Center, Genomics and Bioinformatics Research Unit, 141 Experiment Station Road, Stoneville, Mississippi 38776
- USDOE, Oak Ridge Institute for Science and Education, P.O. Box 117, Oak Ridge, Tennessee 37831
- Genome Informatics Facility, Office of Biotechnology, Iowa State University, Ames, Iowa 50010
| | - Luke R Tembrock
- USDA, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, Science & Technology, Identification Technology Program, 2301 Research Boulevard, Fort Collins, Colorado 80526
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523
| | - Sheina B Sim
- USDA, Agricultural Research Service, U.S. Pacific Basin Agricultural Research Center, Tropical Crop and Commodity Protection Research Unit, 64 Nowelo Street, Hilo, Hawaii 96720
| | - Sivanandan Chudalayandi
- Genome Informatics Facility, Office of Biotechnology, Iowa State University, Ames, Iowa 50010
| | - Scott M Geib
- USDA, Agricultural Research Service, U.S. Pacific Basin Agricultural Research Center, Tropical Crop and Commodity Protection Research Unit, 64 Nowelo Street, Hilo, Hawaii 96720
| | - Brian E Scheffler
- USDA, Agricultural Research Service, Jamie Whitten Delta States Research Center, Genomics and Bioinformatics Research Unit, 141 Experiment Station Road, Stoneville, Mississippi 38776
| | - Omaththage P Perera
- USDA, Agricultural Research Service, Jamie Whitten Delta States Research Center, Southern Insect Management Research Unit, 141 Experiment Station Road, Stoneville, Mississippi 38776
| | - Todd M Gilligan
- USDA, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, Science & Technology, Identification Technology Program, 2301 Research Boulevard, Fort Collins, Colorado 80526
| | - Anna K Childers
- USDA, Agricultural Research Service, Beltsville Agricultural Research Center, Bee Research Laboratory, 10300 Baltimore Avenue, Beltsville, Maryland 20705
| | - Kevin J Hackett
- USDA, Agricultural Research Service, Office of National Programs, Crop Production and Protection, 5601 Sunnyside Avenue, Beltsville, Maryland 20705
| | - Brad S Coates
- USDA, Agricultural Research Service, Corn Insects and Crop Genetics Research Unit, 819 Wallace Road, Ames, Iowa 50011
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Arce-Valdés LR, Sánchez-Guillén RA. The evolutionary outcomes of climate-change-induced hybridization in insect populations. CURRENT OPINION IN INSECT SCIENCE 2022; 54:100966. [PMID: 36089267 DOI: 10.1016/j.cois.2022.100966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Rapid range shifts are one of the most frequent responses to climate change in insect populations. Climate-induced range shifts can lead to the breakdown of isolation barriers, and thus, to an increase in hybridization and introgression. Long-term evolutionary consequences such as the formation of hybrid zones, introgression, speciation, and extinction have been predicted as a result of climate-induced hybridization. Our review shows that there has been an increase in the number of published cases of climate-induced hybridization in insects, and that the formation of hybrid zones and introgression seems to be, at the moment, the most frequent outcomes. Although introgression is considered positive, since it increases species' genetic diversity, in the long term, it could lead to negative outcomes such as species fusion or genetic swamping.
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Affiliation(s)
- Luis R Arce-Valdés
- Red de Biología Evolutiva, Instituto de Ecología, A.C. (INECOL), Carretera antigua a Coatepec 351, Col. El Haya, Xalapa, Veracruz C. P. 91073, Mexico
| | - Rosa A Sánchez-Guillén
- Red de Biología Evolutiva, Instituto de Ecología, A.C. (INECOL), Carretera antigua a Coatepec 351, Col. El Haya, Xalapa, Veracruz C. P. 91073, Mexico.
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11
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Andersen JC, Havill NP, Boettner GH, Chandler JL, Caccone A, Elkinton JS. Real-time geographic settling of a hybrid zone between the invasive winter moth (Operophtera brumata L.) and the native Bruce spanworm (O. bruceata Hulst). Mol Ecol 2022; 31:6617-6633. [PMID: 35034394 DOI: 10.1111/mec.16349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/04/2022] [Indexed: 01/13/2023]
Abstract
Hybridization plays an important and underappreciated role in shaping the evolutionary trajectories of species. Following the introduction of a non-native organism to a novel habitat, hybridization with a native congener may affect the probability of establishment of the introduced species. In most documented cases of hybridization between a native and a non-native species, a mosaic hybrid zone is formed, with hybridization occurring heterogeneously across the landscape. In contrast, most naturally occurring hybrid zones are clinal in structure. Here, we report on a long-term microsatellite data set that monitored hybridization between the invasive winter moth, Operophtera brumata (Lepidoptera: Geometridae), and the native Bruce spanworm, O. bruceata, over a 12-year period. Our results document one of the first examples of the real-time formation and geographic settling of a clinal hybrid zone. In addition, by comparing one transect in Massachusetts where extreme winter cold temperatures have been hypothesized to restrict the distribution of winter moth, and one in coastal Connecticut, where winter temperatures are moderated by Long Island Sound, we found that the location of the hybrid zone appeared to be independent of environmental variables and maintained under a tension model wherein the stability of the hybrid zone was constrained by population density, reduced hybrid fitness, and low dispersal rates. Documenting the formation of a contemporary clinal hybrid zone may provide important insights into the factors that shaped other well-established hybrid zones.
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Affiliation(s)
- Jeremy C Andersen
- Department of Environmental Conservation, University of Massachusetts, Amherst, Massachusetts, USA
| | - Nathan P Havill
- Northern Research Station, USDA Forest Service, Hamden, Connecticut, USA
| | - George H Boettner
- Department of Environmental Conservation, University of Massachusetts, Amherst, Massachusetts, USA
| | - Jennifer L Chandler
- Department of Environmental Conservation, University of Massachusetts, Amherst, Massachusetts, USA
| | - Adalgisa Caccone
- Department of Ecology & Evolutionary Biology, Yale University, New Haven, Connecticut, USA
| | - Joseph S Elkinton
- Department of Environmental Conservation, University of Massachusetts, Amherst, Massachusetts, USA
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12
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Genomic and ecological evidence shed light on the recent demographic history of two related invasive insects. Sci Rep 2022; 12:19629. [PMID: 36385480 PMCID: PMC9669014 DOI: 10.1038/s41598-022-21548-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/28/2022] [Indexed: 11/17/2022] Open
Abstract
Hypogeococcus pungens is a species complex native to southern South America that is composed of at least five putative species, each one specialized in the use of different host plants. Two of these undescribed species were registered as invasive in Central and North America: Hyp-C is a cactophagous mealybug that became an important pest that threatens endemic cactus species in Puerto Rico, and Hyp-AP feeds on Amaranthaceae and Portulacaceae hosts, but does not produce severe damage to the host plants. We quantified genomic variation and investigated the demographic history of both invasive species by means of coalescent-based simulations using high throughput sequencing data. We also evaluated the incidence of host plant infestation produced by both species and used an ecological niche modeling approach to assess potential distribution under current and future climatic scenarios. Our genetic survey evinced the footprints of strong effective population size reduction and signals of genetic differentiation among populations within each species. Incidence of plant attacks varied between species and among populations within species, with some host plant species preferred over others. Ecological niche modeling suggested that under future climatic scenarios both species would expand their distribution ranges in Puerto Rico. These results provide valuable information for the design of efficient management and control strategies of the Puerto Rican cactus pest and shed light on the evolutionary pathways of biological invasions.
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13
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Flores-Rivera XL, Paula-Moraes SV, Johnson JW, Jack CJ, Perera OP. Helicoverpa genus on the edge of the continental U.S.: Flight phenology, analysis of hybrid presence, and insecticide performance in high-input field crops in Puerto Rico. FRONTIERS IN INSECT SCIENCE 2022; 2:1010310. [PMID: 38468804 PMCID: PMC10926533 DOI: 10.3389/finsc.2022.1010310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/17/2022] [Indexed: 03/13/2024]
Abstract
The genus Helicoverpa includes several agricultural pests globally. Helicoverpa armigera was reported in several countries in South America in 2013, and in Puerto Rico, in 2014. This territory is considered an agricultural hub, with a high-input system of seed production in the southern region of the island, and also at the edge of the continental U.S. Possible natural dispersion of populations of H. armigera from the Caribbean or other Central American regions poses a continuing risk to the U.S. This study was performed during the post-detection scenario of H. armigera in Puerto Rico, from 2018 to 2021. A year-round pheromone trapping program of adult males indicated an increase in the population from October to March and differences in the occurrence of Helicoverpa spp. between the municipalities Juan Diaz and Salinas. The proportion of H. armigera/H. zea and detection of congeneric hybrids between these species were assessed based on genital morphology and DNA analysis. Interestingly, neither H. armigera nor expected hybrids were detected in the present study. The susceptibility of H. zea populations to the insecticides Spinetoram, Emamectin benzoate, Chlorantraniliprole, and Esfenvalerate was assessed, and an overall significant effect of insecticide susceptibility was detected. Chlorantraniliprole and Emamectin benzoate had the highest efficacy. These results contribute to the Integrated Pest Management and Insect resistance management programs to Helicoverpa spp. in Puerto Rico. In addition, provide validated information to be considered in mitigation plans, in the scenario of an invasion of H. armigera in the continental U.S.
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Affiliation(s)
- Xiomara L. Flores-Rivera
- Syngenta Seeds, Salinas, Puerto Rico
- Entomology & Nematology Department, West Florida Research and Education Center, Jay, FL, United States
| | - Silvana V. Paula-Moraes
- Entomology & Nematology Department, West Florida Research and Education Center, Jay, FL, United States
| | | | - Cameron J. Jack
- Entomology & Nematology Department, University of Florida, Gainesville, FL, United States
| | - Omaththage P. Perera
- Southern Insect Management Research Unit, USDA Agricultural Research Service, Stoneville, MS, United States
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14
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Horikoshi RJ, Dourado PM, Bernardi O, Willse A, Godoy WA, Omoto C, Bueno ADF, Martinelli S, Berger GU, Head GP, Corrêa AS. Regional pest suppression associated with adoption of Cry1Ac soybean benefits pest management in tropical agriculture. PEST MANAGEMENT SCIENCE 2022; 78:4166-4172. [PMID: 35686298 DOI: 10.1002/ps.7034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/25/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Bacillus thuringiensis (Bt) crops have been adopted worldwide, providing high-level protection from insect pests. Furthermore, Bt crops preserve natural enemies, promote higher yield, and economically benefit farmers. Although regional pest suppression by widespread Bt crop adoption has been observed in temperate regions, this possibility remains uncertain in tropical areas due to the high diversity of alternative hosts and mild winters. RESULTS Evidence of regional reduction in insecticide use across areas was observed in Brazil where Cry1Ac soybean has been grown since 2013, with up to 50% reduction in the number of insecticide sprays for managing lepidopteran pests on non-Bt soybean observed at specific locations from 2012 to 2019. Pest monitoring data from four mesoregions across 5 years of commercial plantings of Cry1Ac soybean from December 2014 to July 2019 showed reduced numbers of Chrysodeixis includens moths captured in pheromone traps across years at all locations. The number of Helicoverpa spp. moths captured also was reduced at three locations. CONCLUSION We provide evidence for regional suppression of lepidopteran pests and reduced insecticide use with the widespread adoption of Cry1Ac soybean in Brazil, bringing economic, social and environmental benefits. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Renato J Horikoshi
- Regulatory Science, Bayer Crop Science, São Paulo, Brazil
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Piracicaba, Brazil
| | | | - Oderlei Bernardi
- Departamento de Defesa Fitossanitária, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Alan Willse
- Regulatory Science, Bayer Crop Science, Chesterfield, MO, USA
| | - Wesley Ac Godoy
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Piracicaba, Brazil
| | - Celso Omoto
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Piracicaba, Brazil
| | - Adeney de F Bueno
- Embrapa Soja, Empresa Brasileira de Pesquisa Agropecuária, Londrina, Brazil
| | | | | | - Graham P Head
- Regulatory Science, Bayer Crop Science, Chesterfield, MO, USA
| | - Alberto S Corrêa
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Piracicaba, Brazil
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15
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Genotyping-by-sequencing (GBS) as a tool for interspecies hybrid detection. ANNALS OF ANIMAL SCIENCE 2022. [DOI: 10.2478/aoas-2022-0063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Genotyping-by-sequencing (GBS) is an extremely useful, modern and relatively inexpensive approach to discovering high-quality single-nucleotide polymorphisms (SNPs), which seem to be the most promising markers for identifying hybrid individuals between different species, especially those that can create backcrosses. In addition, GBS could become an invaluable tool in finding backcrosses, even several generations back. Its potential for the use of restriction enzymes and species is almost unlimited. It can also be successfully applied to species for which a reference genome is not established. In this paper, we describe the GBS technique, its main advantages and disadvantages, and the research carried out using this method concerning interspecies hybridisation and the identification of fertile hybrids. We also present future approaches that could be of interest in the context of the GBS method.
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16
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Fite T, Tefera T, Husemann M, Getaneh G, Villinger J. Genetic Variation and Population Structure of the Old World Bollworm Helicoverpa armigera (Hübner, 1808) (Lepidoptera: Noctuidae) in Ethiopia. ENVIRONMENTAL ENTOMOLOGY 2022; 51:859-869. [PMID: 35797027 DOI: 10.1093/ee/nvac039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 06/15/2023]
Abstract
Helicoverpa armigera is one of the most destructive insect pests of economically valuable crops in the world. Despite its economic importance, the population genetic structure of this insect remains unexplored in Ethiopia. To investigate the genetic diversity and population structure of H. armigera, we sampled 170 individuals from 15 populations throughout Ethiopia. We sequenced a fragment of the mitochondrial cytochrome b (cyt b) gene and five exon-primed intron-crossing (EPIC) markers. Twenty cyt b haplotypes with low-to-moderate haplotype diversity (mean Hd = 0.537) and high nucleotide diversity (mean Pi = 0.00339) were identified. The most frequently observed and widely distributed cyt b haplotype was designated as Hap_1 (67.058%), which is identical to sequences found across the globe. Tajima's D and Fu's F for the cyt b data were negative, supporting a model of population expansion. Within populations, a mean of 2.493 alleles/locus was recorded across the five EPIC loci, ranging from 1.200 to 3.600 alleles/locus. The highest mean effective number of alleles/population was 2.369 and the lowest was 1.178. The mean observed heterozygosity (HO) of the five loci (0-0.289; mean 0.104 ± 0.020) was lower than the expected heterozygosity (HE) (0.095-0.523; mean 0.258 ± 0.028). AMOVA detected significant genetic structure with 61% of the total molecular genetic variation of EPIC genotypes occurring between populations, suggesting a considerable degree of differentiation among populations. STRUCTURE analyses clustered the H. armigera populations into three distinct population groups but very low isolation by distance (R2 = 0.0132, P < 0.05).
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Affiliation(s)
- Tarekegn Fite
- International Centre of Insect Physiology and Ecology (icipe), Addis Ababa, Ethiopia
- School of Plant Sciences, College of Agriculture and Environmental Sciences, Haramaya University, Dire Dhawa, Ethiopia
| | - Tadele Tefera
- International Centre of Insect Physiology and Ecology (icipe), Addis Ababa, Ethiopia
| | - Martin Husemann
- Museum der Natur, Leibniz Institute for the Analysis of Biodiversity Change, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
| | - Gezahegne Getaneh
- Ethiopian Institute of Agricultural Research, Ambo Plant Protection Research Center, P.O. Box 2003, Addis Ababa, Ethiopia
| | - Jandouwe Villinger
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772, Nairobi 00100, Kenya
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17
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Miniature Inverted-Repeat Transposable Elements (MITEs) in the Two Lepidopteran Genomes of Helicoverpa armigera and Helicoverpa zea. INSECTS 2022; 13:insects13040313. [PMID: 35447755 PMCID: PMC9033116 DOI: 10.3390/insects13040313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/10/2022] [Accepted: 03/20/2022] [Indexed: 02/04/2023]
Abstract
Simple Summary Miniature inverted-repeat transposable elements (MITEs) are non-autonomous transposable elements that play important roles in genome organization and evolution. Helicoverpa armigera and Helicoverpa zea shows a high number of reported cases of insecticide resistance worldwide, having evolved resistance against pyrethroids, organophosphates, carbamates, organochlorines, and recently to macrocyclic lactone spinosad and several Bacillus thuringiensis toxins. In the present study, we conducted a genome screening of MITEs in the H. armigera and H. zea genomes using bioinformatics approaches, and the results revealed a total of 3570 and 7405 MITE sequences in the H. armigera and H. zea genomes, respectively. Among these MITEs, we highlighted eleven MITE insertions in the H. armigera defensome genes and only one MITE insertion in those of H. zea. Abstract Miniature inverted-repeat transposable elements MITEs are ubiquitous, non-autonomous class II transposable elements. The moths, Helicoverpa armigera and Helicoverpa zea, are recognized as the two most serious pest species within the genus. Moreover, these pests have the ability to develop insecticide resistance. In the present study, we conducted a genome-wide analysis of MITEs present in H. armigera and H. zea genomes using the bioinformatics tool, MITE tracker. Overall, 3570 and 7405 MITE sequences were identified in H. armigera and H. zea genomes, respectively. Comparative analysis of identified MITE sequences in the two genomes led to the identification of 18 families, comprising 140 MITE members in H. armigera and 161 MITE members in H. zea. Based on target site duplication (TSD) sequences, the identified families were classified into three superfamilies (PIF/harbinger, Tc1/mariner and CACTA). Copy numbers varied from 6 to 469 for each MITE family. Finally, the analysis of MITE insertion sites in defensome genes showed intronic insertions of 11 MITEs in the cytochrome P450, ATP-binding cassette transporter (ABC) and esterase genes in H. armigera whereas for H. zea, only one MITE was retrieved in the ABC-C2 gene. These insertions could thus be involved in the insecticide resistance observed in these pests.
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18
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Rios DA, Specht A, Roque-Specht VF, Sosa-Gómez DR, Fochezato J, Malaquias JV, Gonçalves GL, Moreira GR. Helicoverpa armigera and Helicoverpa zea hybridization: constraints, heterosis, and implications for pest management. PEST MANAGEMENT SCIENCE 2022; 78:955-964. [PMID: 34729903 DOI: 10.1002/ps.6705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The invasion of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) into the New World has made it possible for this pest to hybridize with a native American species, H. zea (Boddie), under natural conditions. We investigated the viability and development of hybrids of these two Helicoverpa species. We reared the parental species and evaluated crosses between H. armigera males and H. zea females and vice versa, two intercrosses between hybrids, and eight backcrosses between hybrids and parental species. We estimated the length of immature stages, fecundity, survival, sex ratio, and heterosis. RESULTS Although hybridization occcurred, with heterosis during the development of immatures, reproductive incompatibilities also were observed between the parental species and between hybrids from subsequent crosses. The interspecific crosses between hybrids and backcrosses confirmed the possibility of introgression events and their perpetuation in field populations. The results indicate that hybridization events are favored at high population levels, while at low population levels the 'species identities' will be maintained. CONCLUSIONS The possibility of interspecific gene flow and its perpetuation through successive crosses and backcrosses suggests several recommenations for management. Populations of both species should be maintained at an equilibrium level to reduce the chance of interspecific crosses, which are presumably more likely to occur during pest outbreaks. The existence of hybridization and resistance to different active pesticide ingredients should be monitored. All practices related to managing the resistance of these pests to chemical and biological insecticides should be systematized to reduce the chance of selecting for resistant individuals.
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Affiliation(s)
- Danielly Am Rios
- Faculdade UnB Planaltina, Universidade de Brasília, Planaltina, Brazil
| | | | | | | | - Júlia Fochezato
- Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Gislene L Gonçalves
- Departamento de Recursos Ambientales, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Arica, Chile
| | - Gilson Rp Moreira
- Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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19
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Climate Change Increases the Expansion Risk of Helicoverpa zea in China According to Potential Geographical Distribution Estimation. INSECTS 2022; 13:insects13010079. [PMID: 35055922 PMCID: PMC8781938 DOI: 10.3390/insects13010079] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 02/04/2023]
Abstract
Simple Summary Helicoverpa zea is one of the most destructive lepidopteran agricultural pests in the world and can disperse long distances both with and without human transportation. It is listed in the catalog of quarantine pests for plants imported to the People’s Republic of China but has not yet been reported in China. On the basis of 1781 global distribution records of H. zea and eight bioclimatic variables, we predicted the potential geographical distributions (PGDs) of H. zea by using a calibrated MaxEnt model. The results showed that the PGDs of H. zea under the current climate are large in China. Future climate changes under shared socioeconomic pathways (SSP) 1-2.6, SSP2-4.5, and SSP5-8.5 for both the 2030s and 2050s will facilitate the expansion of PGDs for H. zea. Helicoverpa zea has a high capacity for colonization by introduced individuals in China. Customs ports should pay attention to the host plants of H. zea and containers harboring this pest. Abstract Helicoverpa zea, a well-documented and endemic pest throughout most of the Americas, affecting more than 100 species of host plants. It is a quarantine pest according to the Asia and Pacific Plant Protection Commission (APPPC) and the catalog of quarantine pests for plants imported to the People’s Republic of China. Based on 1781 global distribution records of H. zea and eight bioclimatic variables, the potential geographical distributions (PGDs) of H. zea were predicted by using a calibrated MaxEnt model. The contribution rate of bioclimatic variables and the jackknife method were integrated to assess the significant variables governing the PGDs. The response curves of bioclimatic variables were quantitatively determined to predict the PGDs of H. zea under climate change. The results showed that: (1) four out of the eight variables contributed the most to the model performance, namely, mean diurnal range (bio2), precipitation seasonality (bio15), precipitation of the driest quarter (bio17) and precipitation of the warmest quarter (bio18); (2) PGDs of H. zea under the current climate covered 418.15 × 104 km2, and were large in China; and (3) future climate change will facilitate the expansion of PGDs for H. zea under shared socioeconomic pathways (SSP) 1-2.6, SSP2-4.5, and SSP5-8.5 in both the 2030s and 2050s. The conversion of unsuitable to low suitability habitat and moderately to high suitability habitat increased by 8.43% and 2.35%, respectively. From the present day to the 2030s, under SSP1-2.6, SSP2-4.5 and SSP5-8.5, the centroid of the suitable habitats of H. zea showed a general tendency to move eastward; from 2030s to the 2050s, under SSP1-2.6 and SSP5-8.5, it moved southward, and it moved slightly northward under SSP2-4.5. According to bioclimatic conditions, H. zea has a high capacity for colonization by introduced individuals in China. Customs ports should pay attention to host plants and containers of H. zea and should exchange information to strengthen plant quarantine and pest monitoring, thus enhancing target management.
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20
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Walsh TK, Heckel DG, Wu Y, Downes S, Gordon KHJ, Oakeshott JG. Determinants of Insecticide Resistance Evolution: Comparative Analysis Among Heliothines. ANNUAL REVIEW OF ENTOMOLOGY 2022; 67:387-406. [PMID: 34995087 DOI: 10.1146/annurev-ento-080421-071655] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It is increasingly clear that pest species vary widely in their propensities to develop insecticide resistance. This review uses a comparative approach to analyze the key pest management practices and ecological and biochemical or genetic characteristics of the target that contribute to this variation. We focus on six heliothine species, three of which, Helicoverpa armigera, Heliothis virescens, and Helicoverpa zea, have developed resistances to many pesticide classes. The three others, Helicoverpa punctigera, Helicoverpa assulta, and Helicoverpa gelotopoeon, also significant pests, have developed resistance to very few pesticide classes. We find that host range and movement between alternate hosts are key ecological traits that influence effective selection intensities for resistance. Operational issues are also critical; area-wide, cross-pesticide management practices that account for these ecological factors are key to reducing selection intensity. Without such management, treatment using broad-spectrum chemicals serves to multiply the effects of host plant preference, preadaptive detoxification ability, and high genetic diversity to create a pesticide treadmill for the three high-propensity species.Without rigorous ongoing management, such a treadmill could still develop for newer, more selective chemistries and insecticidal transgenic crops.
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Affiliation(s)
- T K Walsh
- CSIRO Black Mountain Laboratories, Canberra, Australian Capital Territory, Australia;
- Applied BioSciences, Macquarie University, Sydney, New South Wales, Australia
| | - D G Heckel
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Yidong Wu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - S Downes
- CSIRO McMaster Laboratories, Armidale, New South Wales, Australia
| | - K H J Gordon
- CSIRO Black Mountain Laboratories, Canberra, Australian Capital Territory, Australia;
| | - J G Oakeshott
- CSIRO Black Mountain Laboratories, Canberra, Australian Capital Territory, Australia;
- Applied BioSciences, Macquarie University, Sydney, New South Wales, Australia
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21
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Hickmann F, Savaris M, Corrêa AS, Schwertner CF. Euschistus crenator (Fabricius) (Hemiptera: Pentatomidae): a New Invasive Species on Soybean Fields in Northern Brazil. NEOTROPICAL ENTOMOLOGY 2021; 50:497-503. [PMID: 33501634 DOI: 10.1007/s13744-020-00835-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The expansion of soybean Glycine max (L.) Merrill in South America has provided an abundant host to the native arthropod fauna. Stink bugs (Heteroptera: Pentatomidae) are severe pests on soybean crops due to their feeding activities. Several native species have been recorded on this crop, with the widespread Neotropical brow stink bug Euschistus heros (Fabricius) recognized as the key pest in most of its distribution. Here, we report for the first time Euschistus crenator (Fabricius) as a new invasive species on soybean fields in Northern Brazil. We collected the species at Pará state (2°38'32.2″S 54°55'56.1″W and 4°06'31.2″S 54°55'01.9″W) and Roraima state (2°39'41.3″N 60°46'58.9″W and 3°00'44.6″N 60°22'32.9″W). The latter represents a new state record, and the first represents new locality records, however, both representing the first soybean host record for the species. The distribution of E. crenator ranges from southern US (AZ, CA, FL, and TX) to north South America, mostly between the Tropics of Cancer and Capricorn. Despite overlap in distribution, we did not find E. crenator and E. heros simultaneously on soybean crops in the North region (Amazon Forest) of Brazil. Euschistus crenator was able to complete its life cycle and had viable offspring on soybean plants, with development parameters similar to E. heros.
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Affiliation(s)
- Frederico Hickmann
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture, (USP/ESALQ), Univ of São Paulo, Piracicaba, SP, Brazil
| | - Marcoandre Savaris
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture, (USP/ESALQ), Univ of São Paulo, Piracicaba, SP, Brazil
| | - Alberto Soares Corrêa
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture, (USP/ESALQ), Univ of São Paulo, Piracicaba, SP, Brazil
| | - Cristiano Feldens Schwertner
- Dept of Ecology and Evolutionary Biology, Graduate Program in Ecology and Evolution, Federal Univ of São Paulo, Diadema, SP, Brazil.
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22
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Michereff-Filho M, Fonseca MEN, Boiteux LS, Torres JB, Silva KFADS, Specht A. Helicoverpa armigera Harm 1 Haplotype Predominates in the Heliothinae (Lepidoptera: Noctuidae) Complex Infesting Tomato Crops in Brazil. NEOTROPICAL ENTOMOLOGY 2021; 50:258-268. [PMID: 33666863 DOI: 10.1007/s13744-020-00845-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Tomato (Solanum lycopersicum L.) is a natural host for the Helicoverpa-Chloridea (Lepidoptera: Noctuidae: Heliothinae) pest complex. The species Helicoverpa armigera (Hübner) was responsible for significant yield losses in several crops after its detection in Brazil. The morphology of its larval stage resembles common Heliothinae species, making pest control decisions difficult. The overall lack of studies on the Heliothinae associated with tomatoes in Brazil and the establishment of H. armigera in the country plus their recent outbreaks supported our investigation about the relative importance of the insects from the Helicoverpa-Chloridea complex in this vegetable crop. A nationwide survey was carried out across fresh-market and processing tomato fields. Molecular analyses targeting a segment of the mitochondrial cytochrome oxidase subunit I (mtCOI) gene and their sequence analyses indicated the presence of a pest complex, comprising the introduced species H. armigera and the indigenous species, Helicoverpa zea (Boddie), and Chloridea virescens (Fabricius). The Harm 1 haplotype of H. armigera was identified as the predominant Heliothinae pest infesting fresh-market tomatoes. The New World species Chloridea subflexa (Guenée) as well as the exotic Solanaceae-specific species Helicoverpa assulta (Guenée) were not found in our survey. Additional larvae surveys in processing tomato fields during 2013/2014 in Central Brazil also indicated H. armigera as the most abundant Heliothinae species (95%) together with H. zea (4.75%) and C. virescens (0.25%). The occurrence of distinct Helicoverpa species (which are potentially capable of interbreeding) indicates that novel crop management strategies will be necessary in order to minimize damages caused by this pest complex in tomatoes.
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Affiliation(s)
| | | | - Leonardo Silva Boiteux
- Lab de Melhoramento Genético & Análise Genômica, Embrapa Hortaliças, Gama, Distrito Federal, Brazil
| | - Jorge Braz Torres
- Depto de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | - Karla Fernanda Ayres de Souza Silva
- Lab de Entomologia, Embrapa Hortaliças, Gama, DF, Brazil
- Depto de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
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Specht A, Sosa-Gómez DR, Rios DAM, Claudino VCM, Paula-Moraes SV, Malaquias JV, Silva FAM, Roque-Specht VF. Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Brazil: the Big Outbreak Monitored by Light Traps. NEOTROPICAL ENTOMOLOGY 2021; 50:53-67. [PMID: 33501635 DOI: 10.1007/s13744-020-00836-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The first detection of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Brazil pointed to a gloomy future for South American agriculture in the 2012/2013 harvest, and insecticide sales increased exponentially during 2013 and 2014. However, after this outbreak, the population of this insect returned to manageable levels. This study documents data on H. armigera moth collection using light traps during the outbreak in two locations: (a) western region of the state of Bahia, including population levels of H. armigera and main noctuid pests during the big outbreak (February and March 2013); (b) Federal District, including monthly data for five growing seasons (July 2012-June 2017). During the outbreak, an average of 527.3 moths were collected per trap (cotton crop, March) in the western region of Bahia each night, while the maximum average in the Federal District was 75.4 moths (January). The number of moths decreased in the following growing seasons, and in October 2016, the maximum number was 2.8 moths per trap. Aspects related to the variations of H. armigera and Helicoverpa zea (Boddie) populations, including the study of phenology and relationship with climatic factors and Oceanic Niño Index, were analyzed and discussed. All aspects are approached to contribute to the management of lepidopteran pests, especially H. armigera, in the productive systems of the Brazilian Cerrado.
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