1
|
Rane R, Walsh TK, Lenancker P, Gock A, Dao TH, Nguyen VL, Khin TN, Amalin D, Chittarath K, Faheem M, Annamalai S, Thanarajoo SS, Trisyono YA, Khay S, Kim J, Kuniata L, Powell K, Kalyebi A, Otim MH, Nam K, d’Alençon E, Gordon KHJ, Tay WT. Complex multiple introductions drive fall armyworm invasions into Asia and Australia. Sci Rep 2023; 13:660. [PMID: 36635481 PMCID: PMC9837037 DOI: 10.1038/s41598-023-27501-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 01/03/2023] [Indexed: 01/14/2023] Open
Abstract
The fall armyworm (FAW) Spodoptera frugiperda is thought to have undergone a rapid 'west-to-east' spread since 2016 when it was first identified in western Africa. Between 2018 and 2020, it was recorded from South Asia (SA), Southeast Asia (SEA), East Asia (EA), and Pacific/Australia (PA). Population genomic analyses enabled the understanding of pathways, population sources, and gene flow in this notorious agricultural pest species. Using neutral single nucleotide polymorphic (SNP) DNA markers, we detected genome introgression that suggested most populations in this study were overwhelmingly C- and R-strain hybrids (n = 252/262). SNP and mitochondrial DNA markers identified multiple introductions that were most parsimoniously explained by anthropogenic-assisted spread, i.e., associated with international trade of live/fresh plants and plant products, and involved 'bridgehead populations' in countries to enable successful pest establishment in neighbouring countries. Distinct population genomic signatures between Myanmar and China do not support the 'African origin spread' nor the 'Myanmar source population to China' hypotheses. Significant genetic differentiation between populations from different Australian states supported multiple pathways involving distinct SEA populations. Our study identified Asia as a biosecurity hotspot and a FAW genetic melting pot, and demonstrated the use of genome analysis to disentangle preventable human-assisted pest introductions from unpreventable natural pest spread.
Collapse
Affiliation(s)
- Rahul Rane
- grid.1016.60000 0001 2173 2719CSIRO, 343 Royal Parade, Parkville, Melbourne, VIC 3052 Australia ,grid.1004.50000 0001 2158 5405Applied BioSciences, Macquarie University, Sydney, NSW Australia
| | - Thomas K. Walsh
- grid.1016.60000 0001 2173 2719CSIRO, Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT 2601 Australia ,grid.1004.50000 0001 2158 5405Applied BioSciences, Macquarie University, Sydney, NSW Australia
| | - Pauline Lenancker
- grid.467576.1Sugar Research Australia, 71378 Bruce Highway, Gordonvale, QLD 4865 Australia
| | - Andrew Gock
- grid.1016.60000 0001 2173 2719CSIRO, Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT 2601 Australia
| | - Thi Hang Dao
- Plant Protection Research Institute, Hanoi, Vietnam
| | | | | | - Divina Amalin
- grid.411987.20000 0001 2153 4317Department of Biology, De La Salle University, Manila, Philippines
| | | | - Muhammad Faheem
- CAB International Southeast Asia, Serdang, Kuala Lumpur, Malaysia
| | | | | | - Y. Andi Trisyono
- grid.8570.a0000 0001 2152 4506Department of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Depok, Indonesia
| | - Sathya Khay
- grid.473388.3Plant Protection Division of CARDI, Ministry of Agriculture, Forestry and Fisheries, Phnom Penh, Cambodia
| | - Juil Kim
- grid.412010.60000 0001 0707 9039College of Agriculture and Life Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Lastus Kuniata
- grid.473451.0New Britain Palm Oil, Ramu Agri Industry Ltd., Lae, Papua New Guinea
| | - Kevin Powell
- grid.467576.1Sugar Research Australia, 71378 Bruce Highway, Gordonvale, QLD 4865 Australia
| | | | - Michael H. Otim
- grid.463519.c0000 0000 9021 5435National Crops Resources Research Institute, Namulonge, Kampala, Uganda
| | - Kiwoong Nam
- grid.503158.aDGIMI, Université Montpellier, INRAE, Montpellier, France
| | | | - Karl H. J. Gordon
- grid.1016.60000 0001 2173 2719CSIRO, Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT 2601 Australia
| | - Wee Tek Tay
- CSIRO, Black Mountain Laboratories, Clunies Ross Street, Canberra, ACT, 2601, Australia. .,Applied BioSciences, Macquarie University, Sydney, NSW, Australia.
| |
Collapse
|
2
|
Lee S, Oh DJ, Lee S, Chung SB, Dong-Soon K. Subspecific Synonym of Monochamus alternatus (Coleoptera: Cerambycidae): Population Genetics and Morphological Reassessment. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1987-1994. [PMID: 36351783 DOI: 10.1093/jee/toac171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 11/11/2022]
Abstract
Monochamus alternatus Hope, 1842, is a major forest pest that hosts the pathogenic pinewood nematode (PWN), Bursaphelenchus xylophilus (Steiner and Buhrer, 1934) Nickle 1970. Taxonomically, M. alternatus is currently divided into two subspecies, based on morphology and geography: Monochamus alternatus alternatus Hope, 1842 in China, Taiwan, Tibet, Vietnam, and Laos and Monochamus alternatus endai Makihara, 2004 in South Korea and Japan. Despite their economic importance, the subspecies taxonomy of M. alternatus has never been tested after the first description. In this study, we aimed to reassess the subspecies taxonomy of M. alternatus using molecular and morphological data. For morphological analysis, we examined three major morphological characters (pronotal longitudinal band, granulation on humeri, and elytral proximomedial spine) from 191 individuals from China, Korea, and Taiwan. Population genetic structures were examined using 85 de novo sequences and 82 public COI sequences from China, Korea, Japan, Malaysia, Taiwan, and a few intercepted specimens from the United States. All the genetic data were aligned as three different multiple sequence alignments. Individuals from each subspecies were morphologically and genetically scattered, not clustered according to subspecies in any of the analyses. Therefore, a new synonymy is proposed: Monochamus alternatus Hope, 1842 = Monochamus alternatus endai, syn. n. This study suggests a more robust classification of M. alternatus for the first time and ultimately will pose a substantial impact on implementing quarantine or forestry policies.
Collapse
Affiliation(s)
- Seunghyun Lee
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 92 Box, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China
- Department of Agricultural Biotechnology, Insect Biosystematics Laboratory, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
| | - Dae-Ju Oh
- Biodiversity Research Institute, Jeju Technopark, 338, Sillyedong-ro, Namwon-eup, Seogwipo-si, Jeju-do, Republic of Korea
| | - Seunghwan Lee
- Department of Agricultural Biotechnology, Insect Biosystematics Laboratory, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
| | - Sang Bae Chung
- Jeju Nature School, 982-37, Pyeonghwa-ro, Aewol-eup, Jeju-si, Jeju-do, Republic of Korea
| | - Kim Dong-Soon
- Majors in Plant Resource Sciences and Environment, College of Applied Life Science, SARI, Jeju National University, 102, Jejudaehak-ro, Jeju-si, Jeju-do, Republic of Korea
- The Research Institute for Subtropical Agriculture and Biotechnology, Jeju National University, 102, Jejudaehak-ro, Jeju-si, Jeju-do, Republic of Korea
| |
Collapse
|
3
|
Fyllas NM, Chrysafi D, Avtzis DN, Moreira X. Photosynthetic and defensive responses of two Mediterranean oaks to insect leaf herbivory. TREE PHYSIOLOGY 2022; 42:2282-2293. [PMID: 35766868 PMCID: PMC9832970 DOI: 10.1093/treephys/tpac067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
Insect herbivory is a dominant interaction across virtually all ecosystems globally and has dramatic effects on plant function such as reduced photosynthesis activity and increased levels of defenses. However, most previous work assessing the link between insect herbivory, photosynthesis and plant defenses has been performed on cultivated model plant species, neglecting a full understanding of patterns in natural systems. In this study, we performed a field experiment to investigate the effects of herbivory by a generalist foliar feeding insect (Lymantria dispar) and leaf mechanical damage on multiple leaf traits associated with defense against herbivory and photosynthesis activity on two sympatric oak species with contrasting leaf habit (the evergreen Quercus coccifera L. and the deciduous Quercus pubescens Willd). Our results showed that, although herbivory treatments and oak species did not strongly affect photosynthesis and dark respiration, these two factors exerted interactive effects. Insect herbivory and mechanical damage (vs control) decreased photosynthesis activity for Q. coccifera but not for Q. pubescens. Insect herbivory and mechanical damage tended to increase chemical (increased flavonoid and lignin concentration) defenses, but these effects were stronger for Q. pubescens. Overall, this study shows that two congeneric oak species with contrasting leaf habit differ in their photosynthetic and defensive responses to insect herbivory. While the evergreen oak species followed a more conservative strategy (reduced photosynthesis and higher physical defenses), the deciduous oak species followed a more acquisitive strategy (maintained photosynthesis and higher chemical defenses).
Collapse
Affiliation(s)
| | - Despina Chrysafi
- Biodiversity Conservation Lab, Department of Environment, University of the Aegean, Mytilene 81100, Greece
| | - Dimitrios N Avtzis
- Forest Research Institute, Hellenic Agricultural Organization, Thessaloniki 57006, Greece
| | - Xoaquín Moreira
- Misión Biológica de Galicia (MBG-CSIC), Apartado de Correos 28, Pontevedra, Galicia 36080, Spain
| |
Collapse
|
4
|
Song JW, Jung JM, Nam Y, Jung JK, Jung S, Lee WH. Spatial ensemble modeling for predicting the potential distribution of Lymantria dispar asiatica (Lepidoptera: Erebidae: Lymantriinae) in South Korea. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:889. [PMID: 36241949 DOI: 10.1007/s10661-022-10609-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
The spongy moth, Lymantria dispar, is a pest that damages various tree species throughout North America and Eurasia, has recently emerged in South Korea, threatening local forests and landscapes. The establishment of effective countermeasures against this species' outbreak requires predicting its potential distribution with climate change. In this study, we used species distribution models (CLIMEX and MaxEnt) to predict the potential distribution of the spongy moth and identify areas at risk of exposure to a sustained occurrence of the pest by constructing an ensemble map that simultaneously projected the outcomes of the two models. The results showed that the spongy moth could be distributed over the entire country under the current climate, but the number of suitable areas would decrease under a climate change scenario. This study is expected to provide basic data that can predict areas requiring intensive control and monitoring in advance with methodologically improved modeling technique.
Collapse
Affiliation(s)
- Jae-Woo Song
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon, 34134, Korea
| | - Jae-Min Jung
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon, 34134, Korea
| | - Youngwoo Nam
- Division of Forest Diseases and Insect Pests, National Institute of Forest Science, Seoul, 02455, Korea
| | - Jong-Kook Jung
- Department of Forest Environment Protection, Kangwon National University, Chuncheon, 24341, Korea
| | - Sunghoon Jung
- Department of Applied Biology, Chungnam National University, Daejeon, 34134, Korea
- Department of Smart Agriculture Systems, Chungnam National University, Daejeon, 34134, Korea
| | - Wang-Hee Lee
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon, 34134, Korea.
- Department of Smart Agriculture Systems, Chungnam National University, Daejeon, 34134, Korea.
| |
Collapse
|
5
|
Freistetter NC, Simmons GS, Wu Y, Finger DC, Hood-Nowotny R. Tracking global invasion pathways of the spongy moth (Lepidoptera: Erebidae) to the United States using stable isotopes as endogenous biomarkers. Ecol Evol 2022; 12:e9092. [PMID: 35845358 PMCID: PMC9277613 DOI: 10.1002/ece3.9092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 11/11/2022] Open
Abstract
The spread of invasive insect species causes enormous ecological damage and economic losses worldwide. A reliable method that tracks back an invaded insect's origin would be of great use to entomologists, phytopathologists, and pest managers. The spongy moth (Lymantria dispar, Linnaeus 1758) is a persistent invasive pest in the Northeastern United States and periodically causes major defoliations in temperate forests. We analyzed field‐captured (Europe, Asia, United States) and laboratory‐reared L. dispar specimens for their natal isotopic hydrogen and nitrogen signatures imprinted in their biological tissues (δ2H and δ15N) and compared these values to the long‐term mean δ2H of regional precipitation (Global Network of Isotopes in Precipitation) and δ15N of regional plants at the capture site. We established the percentage of hydrogen–deuterium exchange for L. dispar tissue (Pex = 8.2%) using the comparative equilibration method and two‐source mixing models, which allowed the extraction of the moth's natal δ2H value. We confirmed that the natal δ2H and δ15N values of our specimens are related to the environmental signatures at their geographic origins. With our regression models, we were able to isolate potentially invasive individuals and give estimations of their geographic origin. To enable the application of these methods on eggs, we established an egg‐to‐adult fraction factor for L. dispar (Δegg‐adult = 16.3 ± 4.3‰). Our models suggested that around 25% of the field‐captured spongy moths worldwide were not native in the investigated capture sites. East Asia was the most frequently identified location of probable origin. Furthermore, our data suggested that eggs found on cargo ships in the United States harbors in Alaska, California, and Louisiana most probably originated from Asian L. dispar in East Russia. These findings show that stable isotope biomarkers give a unique insight into invasive insect species pathways, and thus, can be an effective tool to monitor the spread of insect pest epidemics.
Collapse
Affiliation(s)
- Nadine-Cyra Freistetter
- Institute of Soil Research, Department of Forest- and Soil Sciences University of Natural Resources and Life Sciences Tulln Austria.,Department of Engineering Reykjavik University Reykjavík Iceland.,Finnish Meteorological Institute (FMI) Climate Systems Unit Dynamicum Kumpula Finland
| | - Gregory S Simmons
- Otis Laboratory and Salinas Station, United States Department of Agriculture Animal and Plant Health Inspection Service, Science and Technology Buzzards Bay/Salinas MA/CA USA
| | - Yunke Wu
- Otis Laboratory and Salinas Station, United States Department of Agriculture Animal and Plant Health Inspection Service, Science and Technology Buzzards Bay/Salinas MA/CA USA
| | - David C Finger
- Department of Engineering Reykjavik University Reykjavík Iceland.,Sustainability Institute and Forum (SIF) Reykjavik University Reykjavík Iceland
| | - Rebecca Hood-Nowotny
- Institute of Soil Research, Department of Forest- and Soil Sciences University of Natural Resources and Life Sciences Tulln Austria
| |
Collapse
|
6
|
The Threat of Pests and Pathogens and the Potential for Biological Control in Forest Ecosystems. FORESTS 2021. [DOI: 10.3390/f12111579] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Forests are an essential component of the natural environment, as they support biodiversity, sequester carbon, and play a crucial role in biogeochemical cycles—in addition to producing organic matter that is necessary for the function of terrestrial organisms. Forests today are subject to threats ranging from natural occurrences, such as lightning-ignited fires, storms, and some forms of pollution, to those caused by human beings, such as land-use conversion (deforestation or intensive agriculture). In recent years, threats from pests and pathogens, particularly non-native species, have intensified in forests. The damage, decline, and mortality caused by insects, fungi, pathogens, and combinations of pests can lead to sizable ecological, economic, and social losses. To combat forest pests and pathogens, biocontrol may be an effective alternative to chemical pesticides and fertilizers. This review of forest pests and potential adversaries in the natural world highlights microbial inoculants, as well as research efforts to further develop biological control agents against forest pests and pathogens. Recent studies have shown promising results for the application of microbial inoculants as preventive measures. Other studies suggest that these species have potential as fertilizers.
Collapse
|
7
|
Srivastava V, Roe AD, Keena MA, Hamelin RC, Griess VC. Oh the places they’ll go: improving species distribution modelling for invasive forest pests in an uncertain world. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02372-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Srivastava V, Griess VC, Keena MA. Assessing the Potential Distribution of Asian Gypsy Moth in Canada: A Comparison of Two Methodological Approaches. Sci Rep 2020; 10:22. [PMID: 31913334 PMCID: PMC6949248 DOI: 10.1038/s41598-019-57020-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 12/18/2019] [Indexed: 11/09/2022] Open
Abstract
Gypsy moth (Lymantria dispar L.) is one of the world's worst hardwood defoliating invasive alien species. It is currently spreading across North America, damaging forest ecosystems and posing a significant economic threat. Two subspecies L. d. asiatica and L. d. japonica, collectively referred to as Asian gypsy moth (AGM) are of special concern as they have traits that make them better invaders than their European counterpart (e.g. flight capability of females). We assessed the potential distribution of AGM in Canada using two presence-only species distribution models, Maximum Entropy (MaxEnt) and Genetic Algorithm for Rule-set Prediction (GARP). In addition, we mapped AGM potential future distribution under two climate change scenarios (A1B and A2) while implementing dispersal constraints using the cellular automation model MigClim. MaxEnt had higher AUC, pAUC and sensitivity scores (0.82/1.40/1.00) when compared to GARP (0.70/1.26/0.9), indicating better discrimination of suitable versus unsuitable areas for AGM. The models indicated that suitable conditions for AGM were present in the provinces of British Columbia, Ontario, Quebec, Nova Scotia and New Brunswick. The human influence index was the variable found to contribute the most in predicting the distribution of AGM. These model results can be used to identify areas at risk for this pest, to inform strategic and tactical pest management decisions.
Collapse
Affiliation(s)
- Vivek Srivastava
- University of British Columbia, Faculty of Forestry, Department of Forest Resources Management, Vancouver, V6T1Z4, Canada.
| | - Verena C Griess
- University of British Columbia, Faculty of Forestry, Department of Forest Resources Management, Vancouver, V6T1Z4, Canada
| | - Melody A Keena
- Northern Research Station, USDA Forest Service, Hamden, CT, 06514, United States
| |
Collapse
|
9
|
When exotic introductions fail: updating invasion beliefs. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02163-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractDecisions regarding invasive risk of exotic species are often based on species distribution models projected onto the recipient region of interest. Such projections are essentially a measure of prior belief in the ability of an organism to invade. Whilst many decisions are made on the basis of such projections, it is less clear how such prior belief may be empirically modified on the basis of data, in particular introduction events that haven’t led to establishment. Here, using the Asian green mussel (Perna viridis) as an example, we illustrate how information on failed introduction attempts may be used to continually update our beliefs in the ability of an organism to invade per introduction, and the underlying habitat suitability for establishment. Our results show that the establishment probability of P. viridis per fouled ship visit in the supposedly favourable northern Australian waters are much lower than initially though, and are continuing to decline. A Bayesian interpretation of our results notes the dramatic reduction in our belief of the ability of P. viridis to invade in the light of what we estimate to be 100’s of fouled vessels per year visiting ports without any persistent populations establishing. Under a hypothetico-deductive approach we would reject the null (prior) species distribution model as being useful, and seek to find a better one that can withstand the challenge of data.
Collapse
|
10
|
Microbial Control of Invasive Forest Pests with Entomopathogenic Fungi: A Review of the Current Situation. INSECTS 2019; 10:insects10100341. [PMID: 31614772 PMCID: PMC6835771 DOI: 10.3390/insects10100341] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/08/2019] [Accepted: 10/10/2019] [Indexed: 11/19/2022]
Abstract
The health of the forestlands of the world is impacted by a number of insect pests and some of them cause significant damage with serious economic and environmental implications. Whether it is damage of the North American cypress aphid in South America and Africa, or the destruction of maple trees in North America by the Asian long horned beetle, invasive forest pests are a major problem in many parts of the world. Several studies explored microbial control opportunities of invasive forest pests with entomopathogenic bacteria, fungi, and viruses, and some are successfully utilized as a part of integrated forest pest management programs around the world. This manuscript discusses some invasive pests and the status of their microbial control around the world with entomopathogenic fungi.
Collapse
|