1
|
Rodriguez-Chalarca J, Valencia SJ, Rivas-Cano A, Santos-González F, Romero DP. Impact of Bt corn expressing Bacillus thuringiensis Berliner insecticidal proteins on the growth and survival of Spodoptera frugiperda larvae in Colombia. FRONTIERS IN INSECT SCIENCE 2024; 4:1268092. [PMID: 38469336 PMCID: PMC10926427 DOI: 10.3389/finsc.2024.1268092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 01/30/2024] [Indexed: 03/13/2024]
Abstract
Bioassays were conducted under controlled conditions to determine the response of Spodoptera frugiperda (J. E. Smith) larvae fed with corn materials expressing Bacillus thuringiensis (Bt) insecticidal endotoxins: (1) VT Double Pro® (VT2P) expressing Cry1A.105-Cry2Ab2 proteins and (2) VT Triple Pro® (VT3P) expressing Cry1A.105-Cry2Ab2-Cry3Bb1 proteins. The parameters assessed were: (i) mortality rate, and (ii) growth inhibition (GI) with respect to the control. To conduct this study, larvae were collected from commercial non-Bt corn fields, in four agricultural sub-regions in Colombia, between 2018 and 2020. Fifty-two populations were assessed from the field and neonate larvae from each of the populations were used for the bioassays. The study found that mortality rates in the regions for larvae fed with VT2P corn ranged from 95.1 to 100.0%, with a growth inhibition (%GI) higher than 76.0%. Similarly, mortality rate for larvae fed with VT3P corn were between 91.4 and 100.0%, with a %GI above 74.0%. The population collected in Agua Blanca (Espinal, Tolima; Colombia) in 2020, showed the lowest mortality rate of 53.2% and a %GI of 73.5%, with respect to the control. The population that exhibited the lowest %GI was collected in 2018 in Agua Blanca (Espinal, Tolima, Colombia) with a 30.2%, growth inhibition, with respect to the control. In recent years, the use of plant tissue to monitor susceptibility to fall armyworm has proven to be useful in the resistance management program for corn in Colombia determining that the FAW populations are still susceptible to Bt proteins contained in VT2P and VT3P.
Collapse
Affiliation(s)
- Jairo Rodriguez-Chalarca
- Crops for Nutrition and Health, The Alliance of Bioversity International and Centro Internacional de Agricultura Tropical (International Center for Tropical Agriculture), Palmira, Colombia
| | - Sandra J. Valencia
- Crops for Nutrition and Health, The Alliance of Bioversity International and Centro Internacional de Agricultura Tropical (International Center for Tropical Agriculture), Palmira, Colombia
| | - Alejandra Rivas-Cano
- Crops for Nutrition and Health, The Alliance of Bioversity International and Centro Internacional de Agricultura Tropical (International Center for Tropical Agriculture), Palmira, Colombia
- Universidad Nacional de Colombia Sede Palmira, Palmira, Colombia
| | | | | |
Collapse
|
2
|
Trippa D, Scalenghe R, Basso MF, Panno S, Davino S, Morone C, Giovino A, Oufensou S, Luchi N, Yousefi S, Martinelli F. Next-generation methods for early disease detection in crops. PEST MANAGEMENT SCIENCE 2024; 80:245-261. [PMID: 37599270 DOI: 10.1002/ps.7733] [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: 07/20/2023] [Accepted: 08/21/2023] [Indexed: 08/22/2023]
Abstract
Plant pathogens are commonly identified in the field by the typical disease symptoms that they can cause. The efficient early detection and identification of pathogens are essential procedures to adopt effective management practices that reduce or prevent their spread in order to mitigate the negative impacts of the disease. In this review, the traditional and innovative methods for early detection of the plant pathogens highlighting their major advantages and limitations are presented and discussed. Traditional techniques of diagnosis used for plant pathogen identification are focused typically on the DNA, RNA (when molecular methods), and proteins or peptides (when serological methods) of the pathogens. Serological methods based on mainly enzyme-linked immunosorbent assay (ELISA) are the most common method used for pathogen detection due to their high-throughput potential and low cost. This technique is not particularly reliable and sufficiently sensitive for many pathogens detection during the asymptomatic stage of infection. For non-cultivable pathogens in the laboratory, nucleic acid-based technology is the best choice for consistent pathogen detection or identification. Lateral flow systems are innovative tools that allow fast and accurate results even in field conditions, but they have sensitivity issues to be overcome. PCR assays performed on last-generation portable thermocyclers may provide rapid detection results in situ. The advent of portable instruments can speed pathogen detection, reduce commercial costs, and potentially revolutionize plant pathology. This review provides information on current methodologies and procedures for the effective detection of different plant pathogens. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Daniela Trippa
- Dipartimento di Scienze Agrarie Alimentari e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Riccardo Scalenghe
- Dipartimento di Scienze Agrarie Alimentari e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | | | - Stefano Panno
- Dipartimento di Scienze Agrarie Alimentari e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Salvatore Davino
- Dipartimento di Scienze Agrarie Alimentari e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Chiara Morone
- Regione Piemonte - Phytosanitary Division, Torino, Italy
| | - Antonio Giovino
- Council for Agricultural Research and Economics (CREA)-Research Centre for Plant Protection and Certification (CREA-DC), Palermo, Italy
| | - Safa Oufensou
- Dipartimento di Agraria, Università degli Studi di Sassari, Sassari, Italy
| | - Nicola Luchi
- National Research Council, Institute for Sustainable Plant Protection, (CNR-IPSP), Florence, Italy
| | - Sanaz Yousefi
- Department of Horticultural Science, Bu-Ali Sina University, Hamedan, Iran
| | - Federico Martinelli
- Department of Biology, University of Florence, Florence, Italy
- National Research Council, Institute for Sustainable Plant Protection, (CNR-IPSP), Florence, Italy
| |
Collapse
|
3
|
Bae M, Lewis A, Liu S, Arcot Y, Lin YT, Bernal JS, Cisneros-Zevallos L, Akbulut M. Novel Biopesticides Based on Nanoencapsulation of Azadirachtin with Whey Protein to Control Fall Armyworm. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:7900-7910. [PMID: 35727694 DOI: 10.1021/acs.jafc.2c01558] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Biopesticides have become a global trend in order to minimize the hazards derived from synthetic chemical pesticides and improve the safety, efficacy, and environmental friendliness of agricultural pest management. Herein, we report a novel biopesticide composite encapsulating azadirachtin with the size of 260.9 ± 6.8 nm and its effects on the insect pest Spodoptera frugiperda (fall armyworm). The nanocomposite biopesticide was produced via nano emulsification and freeze-drying process using whey protein isolate as a nanocarrier matrix to encapsulate azadirachtin, a natural insect-killing compound obtained from neem seed. We found that the nanocomposite biopesticide acted quicker and with greater efficacy than bulk azadirachtin treatment with corresponding LC50 values within 11 days of S. frugiperda larvae survival. Through confocal microscopy, we found the enhanced biodistribution of the nanocomposite to all parts of the insect body. Photodegradation assays revealed an enhanced UV stability facilitated by light-scattering stemming from the intrinsic nanostructure and UV scavenging vitamin-E component.
Collapse
Affiliation(s)
- Michael Bae
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Amanda Lewis
- Department of Horticultural Science, Texas A&M University, College Station, Texas 77843, United States
| | - Shuhao Liu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Yashwanth Arcot
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Yu-Ting Lin
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Julio S Bernal
- Department of Entomology, Texas A&M University, College Station, Texas 77843, United States
| | - Luis Cisneros-Zevallos
- Department of Horticultural Science, Texas A&M University, College Station, Texas 77843, United States
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas 77843, United States
| | - Mustafa Akbulut
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
4
|
Global population genomic signature of Spodoptera frugiperda (fall armyworm) supports complex introduction events across the Old World. Commun Biol 2022; 5:297. [PMID: 35393491 PMCID: PMC8989990 DOI: 10.1038/s42003-022-03230-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 03/02/2022] [Indexed: 11/23/2022] Open
Abstract
Native to the Americas, the invasive Spodoptera frugiperda (fall armyworm; FAW) was reported in West Africa in 2016, followed by its chronological detection across the Old World and the hypothesis of an eastward Asia expansion. We explored population genomic signatures of American and Old World FAW and identified 12 maternal mitochondrial DNA genome lineages across the invasive range. 870 high-quality nuclear single nucleotide polymorphic DNA markers identified five distinct New World population clusters, broadly reflecting FAW native geographical ranges and the absence of host-plant preferences. We identified unique admixed Old World populations, and admixed and non-admixed Asian FAW individuals, all of which suggested multiple introductions underpinning the pest’s global spread. Directional gene flow from the East into eastern Africa was also detected, in contrast to the west-to-east spread hypothesis. Our study demonstrated the potential of population genomic approaches via international partnership to address global emerging pest threats and biosecurity challenges. This population genomics study identifies the complex multiple introduction history of Spodoptera frugiperda (fall armyworm) from the Americas, into Africa and Asia. This provides new insight into the ‘east-to-west’ directionality of gene flow, and suggests ample genomic exchange at the nuclear level.
Collapse
|
5
|
Reavey CE, Walker AS, Joyce SP, Broom L, Willse A, Ercit K, Poletto M, Barnes ZH, Marubbi T, Troczka BJ, Treanor D, Beadle K, Granville B, de Mello V, Teal J, Sulston E, Ashton A, Akilan L, Naish N, Stevens O, Humphreys-Jones N, Warner SAJ, Spinner SAM, Rose NR, Head G, Morrison NI, Matzen KJ. Self-limiting fall armyworm: a new approach in development for sustainable crop protection and resistance management. BMC Biotechnol 2022; 22:5. [PMID: 35086540 PMCID: PMC8793274 DOI: 10.1186/s12896-022-00735-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/11/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The fall armyworm, Spodoptera frugiperda, is a significant and widespread pest of maize, sorghum, rice, and other economically important crops. Successful management of this caterpillar pest has historically relied upon application of synthetic insecticides and through cultivation of genetically engineered crops expressing insecticidal proteins (Bt crops). Fall armyworm has, however, developed resistance to both synthetic insecticides and Bt crops, which risks undermining the benefits delivered by these important crop protection tools. Previous modelling and empirical studies have demonstrated that releases of insecticide- or Bt-susceptible insects genetically modified to express conditional female mortality can both dilute insecticide resistance and suppress pest populations. RESULTS Here, we describe the first germline transformation of the fall armyworm and the development of a genetically engineered male-selecting self-limiting strain, OX5382G, which exhibits complete female mortality in the absence of an additive in the larval diet. Laboratory experiments showed that males of this strain are competitive against wild-type males for copulations with wild-type females, and that the OX5382G self-limiting transgene declines rapidly to extinction in closed populations following the cessation of OX5382G male releases. Population models simulating the release of OX5382G males in tandem with Bt crops and non-Bt 'refuge' crops show that OX5382G releases can suppress fall armyworm populations and delay the spread of resistance to insecticidal proteins. CONCLUSIONS This article describes the development of self-limiting fall armyworm designed to control this pest by suppressing pest populations, and population models that demonstrate its potential as a highly effective method of managing resistance to Bt crops in pest fall armyworm populations. Our results provide early promise for a potentially valuable future addition to integrated pest management strategies for fall armyworm and other pests for which resistance to existing crop protection measures results in damage to crops and impedes sustainable agriculture.
Collapse
Affiliation(s)
| | - Adam S Walker
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Stephen P Joyce
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Lucy Broom
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
- Centre for Medicines Discovery, University of Oxford, Old Road Campus Research Build, Roosevelt Dr, Headington, Oxford, OX3 7DQ, UK
| | - Alan Willse
- Bayer Crop Science, Chesterfield, MO, 63017, USA
| | - Kyla Ercit
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Mattia Poletto
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Zoe H Barnes
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Thea Marubbi
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | | | - David Treanor
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Katherine Beadle
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Ben Granville
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Vanessa de Mello
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Joss Teal
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Edward Sulston
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Anna Ashton
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Luxziyah Akilan
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Neil Naish
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Oliver Stevens
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | | | - Simon A J Warner
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
- Oxford University Innovation, Buxton Court, 3 West Way, Oxford, OX2 0JB, UK
| | - Sian A M Spinner
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Nathan R Rose
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK.
| | - Graham Head
- Bayer Crop Science, Chesterfield, MO, 63017, USA
| | - Neil I Morrison
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK
| | - Kelly J Matzen
- Oxitec Ltd, 71 Innovation Drive, Milton Park, Abingdon, OX14 4RQ, UK.
| |
Collapse
|
6
|
Abro Z, Kimathi E, De Groote H, Tefera T, Sevgan S, Niassy S, Kassie M. Socioeconomic and health impacts of fall armyworm in Ethiopia. PLoS One 2021; 16:e0257736. [PMID: 34735485 PMCID: PMC8568106 DOI: 10.1371/journal.pone.0257736] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/08/2021] [Indexed: 11/19/2022] Open
Abstract
Since 2016, fall armyworm (FAW) has threatened sub-Saharan 'Africa's fragile food systems and economic performance. Yet, there is limited evidence on this transboundary pest's economic and food security impacts in the region. Additionally, the health and environmental consequences of the insecticides being used to control FAW have not been studied. This paper presents evidence on the impacts of FAW on maize production, food security, and human and environmental health. We use a combination of an agroecology-based community survey and nationally representative data from an agricultural household survey to achieve our objectives. The results indicate that the pest causes an average annual loss of 36% in maize production, reducing 0.67 million tonnes of maize (0.225 million tonnes per year) between 2017 and 2019. The total economic loss is US$ 200 million, or 0.08% of the gross domestic product. The lost production could have met the per capita maize consumption of 4 million people. We also find that insecticides to control FAW have more significant toxic effects on the environment than on humans. This paper highlights governments and development partners need to invest in sustainable FAW control strategies to reduce maize production loss, improve food security, and protect human and environmental health.
Collapse
Affiliation(s)
- Zewdu Abro
- International Centre of Insect Physiology and Ecology (icipe), Addis Ababa, Ethiopia
| | - Emily Kimathi
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Hugo De Groote
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Tadele Tefera
- International Centre of Insect Physiology and Ecology (icipe), Addis Ababa, Ethiopia
| | - Subramanian Sevgan
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Saliou Niassy
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Menale Kassie
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| |
Collapse
|
7
|
Marín DV, Castillo DK, López-Lavalle LAB, Chalarca JR, Pérez CR. An optimized high-quality DNA isolation protocol for spodoptera frugiperda J. E. smith (Lepidoptera: Noctuidae). MethodsX 2021; 8:101255. [PMID: 34434778 PMCID: PMC8374285 DOI: 10.1016/j.mex.2021.101255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 01/28/2021] [Indexed: 11/27/2022] Open
Abstract
An optimized high-quality DNA isolation protocol was developed using body segment tissue from the Fall Armyworm (Spodoptera frugiperda), that will allow documenting genetic variability based on biotypes, facilitating studies on the appearance, distribution and population dynamics of the fall armyworm at the molecular level. The resulting protocol is an easy-to-use, timesaving method that can rapidly achieve high quality, high-yielding total genomic DNA, using chemicals and everyday consumables available in a molecular laboratory. This new method of DNA extraction avoids the contamination of polysaccharides, salts, phenols, proteins and other cellular by-products that can interfere with subsequent reactions. DNA purity estimates reveal A260: A280 ratios greater than 1.9, which were evidenced by quality test on agarose gel, observing complete integrity and high purity of the resulting samples, and yielded 30–99 µg/g of total DNA. Therefore, the quality of the DNA produced from this extraction is suitable for subsequent molecular applications: (i) next generation whole genome sequencing, (ii) conventional polymerase chain reaction for genotyping, (iii) barcodes and (iv) gene cloning. In addition, to become an anticipating diagnostic tool for invasive lepidopteran larval stages:The resulting protocol is an easy-to-use time-saving method. This new extraction method prevents contamination from polysaccharides, salts, phenols, proteins, and other cellular sub-products. DNA purity estimations reveal A260:A280 ratios above 1.9.
Collapse
Affiliation(s)
- Diana Victoria Marín
- Universidad Nacional de Colombia, Sede Palmira, Palmira, Valle del Cauca, Colombia.,The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Recta Cali-Palmira km 17, Valle del Cauca, Colombia
| | - Diana Katherine Castillo
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Recta Cali-Palmira km 17, Valle del Cauca, Colombia
| | - Luis Augusto Becerra López-Lavalle
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Recta Cali-Palmira km 17, Valle del Cauca, Colombia
| | - Jairo Rodríguez Chalarca
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Recta Cali-Palmira km 17, Valle del Cauca, Colombia
| | | |
Collapse
|
8
|
Tepa-Yotto GT, Tonnang HEZ, Goergen G, Subramanian S, Kimathi E, Abdel-Rahman EM, Flø D, Thunes KH, Fiaboe KKM, Niassy S, Bruce A, Mohamed SA, Tamò M, Ekesi S, Sæthre MG. Global Habitat Suitability of Spodoptera frugiperda (JE Smith) (Lepidoptera, Noctuidae): Key Parasitoids Considered for Its Biological Control. INSECTS 2021; 12:insects12040273. [PMID: 33804807 PMCID: PMC8063841 DOI: 10.3390/insects12040273] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022]
Abstract
The present study is the first modeling effort at a global scale to predict habitat suitability of fall armyworm (FAW), Spodoptera frugiperda and its key parasitoids, namely Chelonus insularis, Cotesia marginiventris,Eiphosoma laphygmae,Telenomus remus and Trichogramma pretiosum, to be considered for biological control. An adjusted procedure of a machine-learning algorithm, the maximum entropy (Maxent), was applied for the modeling experiments. Model predictions showed particularly high establishment potential of the five hymenopteran parasitoids in areas that are heavily affected by FAW (like the coastal belt of West Africa from Côte d'Ivoire (Ivory Coast) to Nigeria, the Congo basin to Eastern Africa, Eastern, Southern and Southeastern Asia and some portions of Eastern Australia) and those of potential invasion risks (western & southern Europe). These habitats can be priority sites for scaling FAW biocontrol efforts. In the context of global warming and the event of accidental FAW introduction, warmer parts of Europe are at high risk. The effect of winter on the survival and life cycle of the pest in Europe and other temperate regions of the world are discussed in this paper. Overall, the models provide pioneering information to guide decision making for biological-based medium and long-term management of FAW across the globe.
Collapse
Affiliation(s)
- Ghislain T. Tepa-Yotto
- Biorisk Management Facility (BIMAF), International Institute of Tropical Agriculture (IITA-Benin), 08-01000 Cotonou, Benin; (G.G.); (M.T.)
- Ecole de Gestion et de Production Végétale et Semencière (EGPVS), Université Nationale d’Agriculture (UNA), 43 Kétou, Benin
- Correspondence:
| | - Henri E. Z. Tonnang
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Georg Goergen
- Biorisk Management Facility (BIMAF), International Institute of Tropical Agriculture (IITA-Benin), 08-01000 Cotonou, Benin; (G.G.); (M.T.)
| | - Sevgan Subramanian
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Emily Kimathi
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Elfatih M. Abdel-Rahman
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Daniel Flø
- Norwegian Scientific Committee for Food and Environment (VKM), 0213 Oslo, Norway;
| | - Karl H. Thunes
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
- Department for Invertebrate Pests and Weeds in Forestry, Horticulture and Agriculture, Norwegian Institute of Bioeconomy Research (NIBIO), NO-1431 Ås, Norway
| | - Komi K. M. Fiaboe
- Department of Integrated Pest Management, International Institute of Tropical Agriculture (IITA-Cameroon), BP-2008 Messa-Yaounde, Cameroon;
| | - Saliou Niassy
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Anani Bruce
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), 1041-00621 Nairobi, Kenya;
| | - Samira A. Mohamed
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - Manuele Tamò
- Biorisk Management Facility (BIMAF), International Institute of Tropical Agriculture (IITA-Benin), 08-01000 Cotonou, Benin; (G.G.); (M.T.)
| | - Sunday Ekesi
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya; (H.E.Z.T.); (S.S.); (E.K.); (E.M.A.-R.); (K.H.T.); (S.N.); (S.A.M.); (S.E.)
| | - May-Guri Sæthre
- Department for Climate, Energy and Environment, Section for Environment and Food Security, Norwegian Agency for Development and Cooperation (NORAD), 0257 Oslo, Norway;
| |
Collapse
|
9
|
Fan S, Chen C, Zhao Q, Wei J, Zhang H. Identifying Potentially Climatic Suitability Areas for Arma custos (Hemiptera: Pentatomidae) in China under Climate Change. INSECTS 2020; 11:E674. [PMID: 33020387 PMCID: PMC7600814 DOI: 10.3390/insects11100674] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 09/24/2020] [Accepted: 10/02/2020] [Indexed: 11/16/2022]
Abstract
Spodoptera frugiperda is a notorious pest that feeds on more than 80 crops, and has spread over 100 countries. Many biological agents have been employed to regulate it, such as Arma custos. A. custos is a polyphagous predatory heteropteran, which can effectively suppress several agricultural and forest pests. Thus, in order to understand where A. custos can survive and where can be released, MaxEnt was used to predict the potentially suitable areas for A. custos in China under climate change conditions. The results show that the annual mean temperature (bio1) and annual precipitation (bio12) are the major factors influencing the distribution of A. custos. The optimal range of the two are 7.5 to 15 °C, 750 to 1200 mm, respectively. The current climate is highly suitable for A. custos in Hebei, Henan, Shandong, Anhui, Hubei, Jiangsu, and Zhejiang Provinces. Considering the currently suitable distribution area of S. frugiperda, artificially reared A. custos is suitable for release in Fujian, Zhejiang, Jiangxi, Hunan, and southeastern Sichuan Provinces. Under the future climatic scenarios, the suitable area will decrease and shift towards the north. Overall, this result can provide a reference framework for future application of A. custos for biological control.
Collapse
Affiliation(s)
- Shiyu Fan
- College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (S.F.); (C.C.); (Q.Z.); (J.W.)
| | - Chao Chen
- College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (S.F.); (C.C.); (Q.Z.); (J.W.)
| | - Qing Zhao
- College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (S.F.); (C.C.); (Q.Z.); (J.W.)
| | - Jiufeng Wei
- College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (S.F.); (C.C.); (Q.Z.); (J.W.)
| | - Hufang Zhang
- College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (S.F.); (C.C.); (Q.Z.); (J.W.)
- Department of Biology, Xinzhou Teachers University, Xinzhou 034000, China
| |
Collapse
|
10
|
Early R, González-Moreno P, Murphy ST, Day R. Forecasting the global extent of invasion of the cereal pest Spodoptera frugiperda, the fall armyworm. NEOBIOTA 2018. [DOI: 10.3897/neobiota.40.28165] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Fall armyworm, Spodopterafrugiperda, is a crop pest native to the Americas, which has invaded and spread throughout sub-Saharan Africa within two years. Recent estimates of 20–50% maize yield loss in Africa suggest severe impact on livelihoods. Fall armyworm is still infilling its potential range in Africa and could spread to other continents. In order to understand fall armyworm’s year-round, global, potential distribution, we used evidence of the effects of temperature and precipitation on fall armyworm life-history, combined with data on native and African distributions to construct Species Distribution Models (SDMs). We also investigated the strength of trade and transportation pathways that could carry fall armyworm beyond Africa. Up till now, fall armyworm has only invaded areas that have a climate similar to the native distribution, validating the use of climatic SDMs. The strongest climatic limits on fall armyworm’s year-round distribution are the coldest annual temperature and the amount of rain in the wet season. Much of sub-Saharan Africa can host year-round fall armyworm populations, but the likelihoods of colonising North Africa and seasonal migrations into Europe are hard to predict. South and Southeast Asia and Australia have climate conditions that would permit fall armyworm to invade. Current trade and transportation routes reveal Australia, China, India, Indonesia, Malaysia, Philippines and Thailand face high threat of fall armyworm invasions originating from Africa.
Collapse
|