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Zhou Y, Guo S, Wang T, Zong S, Ge X. Modeling the pest-pathogen threats in a warming world for the red turpentine beetle (Dendroctonus valens) and its symbiotic fungus (Leptographium procerum). PEST MANAGEMENT SCIENCE 2024; 80:3423-3435. [PMID: 38407566 DOI: 10.1002/ps.8046] [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: 08/05/2023] [Revised: 02/18/2024] [Accepted: 02/26/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Dendroctonus valens along with its symbiotic fungi have caused unprecedented damage to pines in China. Leptographium procerum, its primary symbiotic fungus, facilitates the invasion and colonization of the pest, thereby aggravating ecological threats. Assessing shifts in the niches and ranges of D. valens and its symbiotic fungus could provide a valuable basis for pest control. Here, we conducted niche comparisons between native and invasive populations of D. valens. Then, we employed standard ecological niche models and ensembles of small models to predict the potential distributions of D. valens and L. procerum under climate change conditions and to estimate areas of overlap. RESULTS The niche of invasive population of D. valens in Chinese mainland only occupied a limited portion of the niche of native population in North America, leaving a substantial native niche unfilled and without any niche expansion. The suitable regions for D. valens are predicted in central and southern North America and central and northeastern Chinese mainland. The overlap with the suitable regions of L. procerum included eastern North America and the central and northeastern Chinese mainland under historical climatic scenarios. The regions susceptible to their symbiotic damage will shift northward in response to future climate change. CONCLUSIONS Projected distributions of D. valens and its symbiotic fungus, along with areas vulnerable to their symbiotic damage, provide essential insights for devising strategies against this association. Additionally, our study contributes to comprehending how biogeographic approaches aid in estimating potential risks of pest-pathogen interactions in forests within a warming world. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yuting Zhou
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Siwei Guo
- Department of Geology and Mining, Henan Geology Mineral College, Zhengzhou, China
| | - Tao Wang
- Mentougou Forestry Station, Beijing, China
| | - Shixiang Zong
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Xuezhen Ge
- Department of Integrative Biology, University of Guelph, Guelph, Canada
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Lantschner V, Gomez DF, Vilardo G, Stazione L, Ramos S, Eskiviski E, Fachinetti R, Schiappacassi M, Vallejos N, Germano M, Villacide J, Grilli MP, Martinez G, Ahumada R, Estay SA, Dumois I, Corley J. Distribution, Invasion History, and Ecology of Non-native Pine Bark Beetles (Coleoptera: Curculionidae: Scolytinae) in Southern South America. NEOTROPICAL ENTOMOLOGY 2024; 53:351-363. [PMID: 38236322 DOI: 10.1007/s13744-023-01125-2] [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: 11/01/2023] [Accepted: 12/21/2023] [Indexed: 01/19/2024]
Abstract
The growth of international trade, coupled with an expansion of large-scale pine plantations in South America during the second half of the twentieth century, has significantly increased the opportunities for the invasion of forest insects. Bark beetles (Coleoptera: Curculionidae, Scolytinae) are a large and diverse group of insects, commonly recognized as one of the most important tree mortality agents in coniferous forests worldwide and an important group among invasive forest species. In this study, we combined data from field sampling with published records of established non-native pine bark beetles, to describe their distribution and invasion history in pine plantations across southern South America, reviewing the available information on their phenology and host range. We obtained records of established populations of six Eurasian species distributed in two major regions: the southwest region comprises plantations in Chile and the Argentine Patagonia, with four bark beetle species: Hylastes ater, Hylastes linearis, Hylurgus ligniperda, and Orthotomicus laricis; the northeastern zone includes northeastern Argentina, Uruguay, and southern Brazil, and includes three bark beetle species: Cyrtogenius luteus, H. ligniperda, and O. erosus. The establishment of non-native populations across the study area began in the 1950s, and from the 1980s onwards, there has been an exponential increase in introductions. We predict that several of these species will continue spreading across South America and that new species will continue arriving. We highlight the importance of international collaboration for early detection and management of non-native pine bark beetles.
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Affiliation(s)
- Victoria Lantschner
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Bariloche, Río Negro, Argentina.
| | | | - Gimena Vilardo
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Bariloche, Río Negro, Argentina
| | - Leonel Stazione
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Bariloche, Río Negro, Argentina
| | - Sergio Ramos
- Estación Experimental Agropecuaria Concordia, Instituto Nacional de Tecnología Agropecuaria (INTA), Concordia, Entre Ríos, Argentina
| | - Edgar Eskiviski
- Estación Experimental Agropecuaria Montecarlo, Instituto Nacional de Tecnología Agropecuaria (INTA), Montecarlo, Misiones, Argentina
| | - Romina Fachinetti
- Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales (IMBIV), CONICET - Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | | | - Monica Germano
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Campo Forestal General San Martín, Lago Puelo, Chubut, Argentina
| | - José Villacide
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Bariloche, Río Negro, Argentina
| | - Mariano P Grilli
- Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales (IMBIV), CONICET - Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Gonzalo Martinez
- Instituto Nacional de Investigación Agropecuaria (INIA), Tacuarembó, Uruguay
| | - Rodrigo Ahumada
- Bioforest - Arauco, Silviculture and Forest Health Division, Concepción, Chile
| | - Sergio A Estay
- Universidad Austral de Chile, Instituto de Ciencias Ambientales y Evolutivas, Valdivia, Chile
- Center of Applied Ecology and Sustainability (CAPES), Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Ignacio Dumois
- Departamento de Entomología, Laboratorio Vegetal, SENASA, Buenos Aires, Argentina
| | - Juan Corley
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA EEA Bariloche - CONICET, Bariloche, Río Negro, Argentina
- Departamento de Ecología, CRUB, Universidad Nacional del Comahue, Bariloche, Argentina
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Potential European Geographical Distribution of Gnathotrichus materiarius (Fitch, 1858) (Coleoptera: Scolytinae) under Current and Future Climate Conditions. FORESTS 2022. [DOI: 10.3390/f13071097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Gnathotrichus materiarius (Fitch, 1858) is an alien ambrosia beetle from North America, that has been spreading across Europe since the 1930s. The species infests coniferous trees, excavating galleries in sapwood. However, to date very few studies have predicted changes in ambrosia beetle habitat suitability under changing climate conditions. To fill that gap in the current knowledge, we used the MaxEnt algorithm to estimate areas potentially suitable for this species in Europe, both under current climate conditions and those forecasted for the years 2050 and 2070. Our analyses showed areas where the species has not been reported, though the climatic conditions are suitable. Models for the forecasted conditions predicted an increase in suitable habitats. Due to the wide range of host trees, the species is likely to spread through the Balkans, the Black Sea and Caucasus region, Baltic countries, the Scandinavian Peninsula, and Ukraine. As a technical pest of coniferous sapwood, it can cause financial losses due to deterioration in quality of timber harvested in such regions. Our results will be helpful for the development of a climate-change-integrated management strategy to mitigate potential adverse effects.
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Vilardo G, Faccoli M, Corley JC, Lantschner MV. Factors driving historic intercontinental invasions of European pine bark beetles. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02818-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li Y, Bateman C, Skelton J, Wang B, Black A, Huang YT, Gonzalez A, Jusino MA, Nolen ZJ, Freeman S, Mendel Z, Kolařík M, Knížek M, Park JH, Sittichaya W, Pham TH, Ito SI, Torii M, Gao L, Johnson AJ, Lu M, Sun J, Zhang Z, Adams DC, Hulcr J. Preinvasion Assessment of Exotic Bark Beetle-Vectored Fungi to Detect Tree-Killing Pathogens. PHYTOPATHOLOGY 2022; 112:261-270. [PMID: 34261341 DOI: 10.1094/phyto-01-21-0041-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Exotic diseases and pests of trees have caused continental-scale disturbances in forest ecosystems and industries, and their invasions are considered largely unpredictable. We tested the concept of preinvasion assessment of not yet invasive organisms, which enables empirical risk assessment of potential invasion and impact. Our example assesses fungi associated with Old World bark and ambrosia beetles and their potential to impact North American trees. We selected 55 Asian and European scolytine beetle species using host use, economic, and regulatory criteria. We isolated 111 of their most consistent fungal associates and tested their effect on four important southeastern American pine and oak species. Our test dataset found no highly virulent pathogens that should be classified as an imminent threat. Twenty-two fungal species were minor pathogens, which may require context-dependent response for their vectors at North American borders, while most of the tested fungi displayed no significant impact. Our results are significant in three ways; they ease the concerns over multiple overseas fungus vectors suspected of heightened potential risk, they provide a basis for the focus on the prevention of introduction and establishment of species that may be of consequence, and they demonstrate that preinvasion assessment, if scaled up, can support practical risk assessment of exotic pathogens.
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Affiliation(s)
- You Li
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
- Fujian Province Key Laboratory of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Craig Bateman
- Florida Museum of Natural History, University of Florida, Gainesville 32611, U.S.A
| | - James Skelton
- Department of Biology, William and Mary, Williamsburg 23185, U.S.A
| | - Bo Wang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China
| | - Adam Black
- Peckerwood Garden Conservation Foundation, Hempstead 77445, U.S.A
| | - Yin-Tse Huang
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
| | - Allan Gonzalez
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
| | | | | | - Stanley Freeman
- Plant Protection Institute, The Volcani Center, Rishon LeZion, Israel
| | - Zvi Mendel
- Plant Protection Institute, The Volcani Center, Rishon LeZion, Israel
| | - Miroslav Kolařík
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Miloš Knížek
- Forestry and Game Management Research Institute, 156 04 Prague 5-Zbraslav, Czech Republic
| | - Ji-Hyun Park
- National Institute of Forest Science, Seoul, South Korea
| | - Wisut Sittichaya
- Department of Pest Management, Faculty of Natural Resources, Prince of Songkla University, Songkhla 90110, Thailand
| | - Thai-Hong Pham
- Mientrung Institute for Scientific Research, VNMN and Graduate School of Science and Technology, Vietnam Academy of Science and Technology, Hue, Vietnam
| | | | - Masato Torii
- Department of Mushroom Science and Forest Microbiology, Forestry and Forest Products Research Institute, Tsukuba 305-8687, Japan
| | - Lei Gao
- Shanghai Academy of Landscape Architecture Science and Planning, Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai, China
| | - Andrew J Johnson
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
| | - Min Lu
- School of Life Sciences, Hubei University, Wuhan, China
| | - Jianghua Sun
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Zhen Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Damian C Adams
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
| | - Jiri Hulcr
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville 32611, U.S.A
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Wallace M, Rieske LK. Validation of reference genes for quantitative PCR in the forest pest, Ips calligraphus. Sci Rep 2021; 11:23523. [PMID: 34876626 PMCID: PMC8651742 DOI: 10.1038/s41598-021-02890-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/18/2021] [Indexed: 11/24/2022] Open
Abstract
The six-spined ips, Ips calligraphus, is a North American bark beetle that can exploit most eastern North American Pinus species and can cause mortality. Biotic and abiotic disturbances weaken trees, creating breeding substrate that promotes rapid population growth. Management historically relied on silvicultural practices, but as forests become increasingly stressed, innovative management is needed. Manipulation of the cellular RNA interference (RNAi) pathway to induce gene silencing is an emerging means of insect suppression, and is effective for some bark beetles. Quantitative PCR (qPCR) is a powerful tool for analysis of gene expression, and is essential for examining RNAi. To compare gene expression among individuals, stably expressed reference genes must be validated for qPCR. We evaluated six candidate reference genes (18s, 16s, 28s, ef1a, cad, coi) for stability under biotic (beetle sex, developmental stage, and host plant), and abiotic (temperature, photoperiod, and dsRNA exposure) conditions. We used the comprehensive RefFinder tool to compare stability rankings across four algorithms. These algorithms identified 18s, 16s, and 28s as the most stably expressed. Overall, 16s and 28s were selected as reference genes due to their stability and moderate expression levels, and can be used for I. calligraphus gene expression studies using qPCR, including those evaluating RNAi.
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Affiliation(s)
- Mary Wallace
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA
| | - Lynne K Rieske
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA.
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Li Y, Johnson AJ, Gao L, Wu C, Hulcr J. Two new invasive Ips bark beetles (Coleoptera: Curculionidae) in mainland China and their potential distribution in Asia. PEST MANAGEMENT SCIENCE 2021; 77:4000-4008. [PMID: 33890353 DOI: 10.1002/ps.6423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 04/09/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Ips is a bark beetle genus of 45 species, many of which are pests of conifer forests and plantations under stress. Twelve Ips species are recorded from China and presumably native there. From 2016 to 2018, specimens suspected to be Ips calligraphus and Ips grandicollis, were collected from traps with ethanol as a sole lure in Zhuhai, Guangdong, China. Both species originate in North America and infest various species of native or introduced pines. Since Ips species are known to cause or exacerbate problems in pine plantations, and a regional survey using traps baited with attractants were implemented in this study to investigate the extent of the introduction. RESULTS Both I. calligraphus and I. grandicollis have been collected repeatedly from several traps with Ips attractants in Zhuhai, Guangdong, China since 2016. Potential distributions of these two species in Asia, inferred using MaxEnt, is extensive, given the high projected environmental suitability in North America, South America, Mediterranean Europe, Northern Africa, and Eastern Asia. The host plant of I. calligraphus from Zhuhai was identified as slash pine Pinus elliottii using DNA barcoding of gut contents from trapped individuals. CONCLUSION This is the first report of the establishment of two American pine bark beetles, I. calligraphus and I. grandicollis in continental Asia. The gut content of both species suggests that these pest feeds on a non-native host. Whether the two species present high-risk to Asian forests will become clear with more research on their interactions with native pines.
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Affiliation(s)
- You Li
- Vector-borne Virus Research Center, Fujian Province Key Laboratory of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville, FL, USA
| | - Andrew J Johnson
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville, FL, USA
| | - Lei Gao
- Shanghai Academy of Landscape Architecture Science and Planning, Key Laboratory of National Forestry and Grassland Administration on Ecological Landscaping of Challenging Urban Sites, Shanghai, China
| | - Chengxu Wu
- College of Forestry, Guizhou University, Guiyang, China
| | - Jiri Hulcr
- School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville, FL, USA
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8
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Hartshorn JA, Coyle DR, Rabaglia RJ. Responses of Native and Non-native Bark and Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae) to Different Chemical Attractants: Insights From the USDA Forest Service Early Detection and Rapid Response Program Data Analysis. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:776-783. [PMID: 33459780 DOI: 10.1093/jee/toaa309] [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: 10/17/2020] [Indexed: 06/12/2023]
Abstract
More than 60 non-native bark and ambrosia beetle species (Coleoptera: Curculionidae: Scolytinae) are established in North America and several have had severe negative impacts on ecosystems. Non-native scolytines can introduce fungi which may cause vascular wilts and compete with native fungi and lead to reductions in native species through host reduction. The Early Detection Rapid Response (EDRR) program was created by the USDA Forest Service in 2007 to detect non-native bark and ambrosia beetles and provide a baseline for tracking populations over time. This program has led to new collection records and increased communication among agencies to delimit non-native scolytine populations and perform appropriate management. Although insect responses to different lure types vary, it is unknown how different lures compare in attracting bark and ambrosia beetles. Our goal was to examine how lure combinations used in the EDRR program affect captures of bark and ambrosia beetle communities and to determine the most effective combination of lures for targeting non-native scolytines. The highest proportion of non-native scolytines was captured with ethanol, as was the greatest total number of species, and the most diverse beetle community. Traps with Ips (Coleoptera: Curculionidae) lures captured the highest proportion of native scolytines but the lowest total number of total species and was also the least diverse. Communities of scolytines differed significantly among lures, states, and years. While ethanol is an appropriate lure for generalist trapping and targeting a wide range of non-native bark and ambrosia beetles, more targeted lures are needed for monitoring certain species of non-natives.
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Affiliation(s)
- Jess A Hartshorn
- Forestry and Environmental Conservation, Clemson University, Clemson, SC
| | - David R Coyle
- Forestry and Environmental Conservation, Clemson University, Clemson, SC
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9
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Spatial ecology of the stone marten in an Alpine area: combining camera-trapping and genetic surveys. MAMMAL RES 2021. [DOI: 10.1007/s13364-021-00564-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AbstractA species’ potential distribution can be modelled adequately only if no factor other than habitat availability affects its occurrences. Space use by stone marten Martes foina is likely to be affected by interspecific competition with the strictly related pine marten Martes martes, the latter being able to outcompete the first species in forested habitats. Hence, to point out the environmental factors which determine the distribution and density of the stone marten, a relatively understudied mesocarnivore, we applied two non-invasive survey methods, camera-trapping and faecal-DNA based genetic analysis, in an Alpine area where the pine marten was deemed to be absent (Val Grande National Park N Italy). Camera trapping was conducted from October 2014 to November 2015, using up to 27 cameras. Marten scats were searched for between July and November 2015 and, to assess density, in spring 2017. Species identification was accomplished by a PCR-RFLP method, while 17 autosomal microsatellites were used for individual identification. The stone marten occurred in all available habitats (83% of trapping sites and 73.2% of scats); nonetheless, habitat suitability, as assessed using MaxEnt, depended on four major land cover variables—rocky grasslands, rocks and debris, beech forests and chestnut forests—, martens selecting forests and avoiding open rocky areas. Sixteen individuals were identified, of which 14 related to each other, possibly forming six different groups. Using capwire estimators, density was assessed as 0.95 (0.7–1.3) ind/km2. In the study area, the widespread stone marten selected forested areas, attaining density values like those reported for the pine marten in northern Europe and suggesting that patterns of habitat selection may depend on the relative abundance of the two competing martens.
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10
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Spatial distribution of the pine marten (Martes martes) and stone marten (Martes foina) in the Italian Alps. Mamm Biol 2021. [DOI: 10.1007/s42991-020-00098-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lantschner MV, Corley JC, Liebhold AM. Drivers of global Scolytinae invasion patterns. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2020; 30:e02103. [PMID: 32086977 DOI: 10.1002/eap.2103] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/08/2020] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
Biological invasions are affected by characteristics of invading species, strength of pathway connectivity among world regions and habitat characteristics of invaded regions. These factors may interact in complex ways to drive geographical variation in numbers of invasions among world regions. Understanding the role of these drivers provides information that is crucial to the development of effective biosecurity policies. Here we assemble for the first time a global database of historical invasions of Scolytinae species and explore factors explaining geographical variation in numbers of species invading different regions. This insect group includes several pest species with massive economic and ecological impacts and these beetles are known to be accidentally moved with wood packaging in global trade. Candidate explanatory characteristics included in this analysis are cumulative trade among world regions, size of source species pools, forest area, and climatic similarity of the invaded region with source regions. Species capable of sib-mating comprised the highest proportion on nonnative Scolytines, and these species colonized a higher number of regions than outbreeders. The size of source species pools offered little power in explaining variation in numbers of invasions among world regions nor did climate or forest area. In contrast, cumulative trade had a strong and consistent positive relationship with numbers of Scolytinae species moving from one region to another, and this effect was highest for bark beetles, followed by ambrosia beetles, and was low for seed and twig feeders. We conclude that global variation in Scolytine invasions is primarily driven by variation in trade levels among world regions. Results stress the importance of global trade as the primary driver of historical Scolytinae invasions and we anticipate other hitchhiking species would exhibit similar patterns. One implication of these results is that invasions between certain world regions may be historically low because of past low levels of trade but future economic shifts could result in large numbers of new invasions as a result of increased trade among previously isolated portions of the world. With changing global flow of goods among world regions, it is crucial that biosecurity efforts keep pace to minimize future invasions and their impacts.
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Affiliation(s)
- M Victoria Lantschner
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB), INTA - CONICET, Modesta Victoria 4450, Bariloche, Argentina
| | - Juan C Corley
- Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB), INTA - CONICET, Modesta Victoria 4450, Bariloche, Argentina
- Departamento de Ecología, CRUB Universidad Nacional del Comahue, Quintral 1250, Bariloche, Argentina
| | - Andrew M Liebhold
- Northern Research Station, USDA Forest Service, 180 Canfield Street, Morgantown, West Virginia, 26505, USA
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, 165 00, Praha 6, Suchdol, Czech Republic
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Gomez DF, Skelton J, De María M, Hulcr J. Influence of Temperature and Precipitation Anomaly on the Seasonal Emergence of Invasive Bark Beetles in Subtropical South America. NEOTROPICAL ENTOMOLOGY 2020; 49:347-352. [PMID: 31925748 DOI: 10.1007/s13744-019-00760-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/23/2019] [Indexed: 06/10/2023]
Abstract
Several invasive bark beetle species have caused major economic and ecological losses in South America. Accurate predictions of beetle emergence times will make control efforts more efficient and effective. To determine whether bark beetle emergence can be predicted by season, temperature, or precipitation, we analyzed trapping records for three introduced pest species of bark beetles in Uruguay. We used trigonometric functions as seasonal predictors in generalized linear models to account for purely seasonal effects, while testing for effects of temperature and precipitation. Results show that all three beetle species had strong but unique seasonal emergence patterns and responded differently to temperature and precipitation. Cyrtogenius luteus (Blandford) emerged in summer and increased with precipitation but was not affected by temperature. Hylurgus ligniperda (Fabricius) emerged in winter and increased with temperature but was not affected by precipitation. Orthotomicus erosus (Wollaston) had a primary emergence in spring, and a smaller emergence in early summer, but showed no significant relationship with temperature or precipitation. This study shows that the emergence of these bark beetle species in Uruguay is influenced by seasonality more than by temperature and precipitation fluctuations. It also shows how seasonality can be easily incorporated into models to make more accurate predictions about pest population dynamics.
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Affiliation(s)
- D F Gomez
- School of Forest Resources and Conservation, Univ of Florida, Gainesville, USA.
- Programa Nacional de Producción Forestal, Instituto Nacional de Investigación Agropecuaria, Montevideo, Uruguay.
| | - J Skelton
- School of Forest Resources and Conservation, Univ of Florida, Gainesville, USA
| | - M De María
- Dept of Physiological Sciences, College of Veterinary Medicine, Gainesville, USA
| | - J Hulcr
- School of Forest Resources and Conservation, Univ of Florida, Gainesville, USA
- Entomology and Nematology Dept, Univ of Florida, Gainesville, USA
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Faccoli M, Gallego D, Branco M, Brockerhoff EG, Corley J, Coyle DR, Hurley BP, Jactel H, Lakatos F, Lantschner V, Lawson S, Martínez G, Gómez DF, Avtzis D. A first worldwide multispecies survey of invasive Mediterranean pine bark beetles (Coleoptera: Curculionidae, Scolytinae). Biol Invasions 2020. [DOI: 10.1007/s10530-020-02219-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Zhao Z, Hui C, Plant RE, Su M, Papadopoulos NT, Carpenter TE, Li Z, Carey JR. The failure of success: cyclic recurrences of a globally invasive pest. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01991. [PMID: 31400182 DOI: 10.1002/eap.1991] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/05/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
In the six decades since 1960, the oriental fruit fly, Bactrocera dorsalis (Hendel), has been announced successfully eradicated in California by the U.S. Department of Agriculture a total of 564 times. This includes eradication declarations in one city a total of 25 different years, in 12 cities 8-19 different years, and in 101 cities 2-7 different years. We here show that the false negatives in declaring elimination success hinge on the easily achieved regulatory criteria, which have virtually guaranteed the failure of complete extirpation of this pest. Analyses of the time series of fly detection over California placed on a grid of 100-km2 cells revealed (1) partial success of the eradication program in controlling the invasion of the oriental fruit fly; (2) low prevalence of the initial detection in these cells is often followed by high prevalence of recurrences; (3) progressively shorter intervals between years of consecutive detections; and (4) high likelihood of early-infested cells also experiencing the most frequent outbreaks. Facing the risk of recurrent invasions, such short-term eradication programs have only succeeded annually according to the current regulatory criteria but have failed to achieve the larger goal of complete extirpation of the oriental fruit fly. Based on the components and running costs of the current programs, we further estimated the efficiency of eradication programs with different combinations of eradication radius, duration, and edge impermeability in reducing invasion recurrences and slowing the spread of the oriental fruit fly. We end with policy implications including the need for agricultural agencies worldwide to revisit eradication protocols in which monitoring and treatments are terminated when the regulatory criteria for declaring eradication are met. Our results also have direct implications to invasion biologists and agriculture policy makers regarding long-term risks of short-term expediency.
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Affiliation(s)
- Zihua Zhao
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Cang Hui
- Department of Mathematical Sciences, Centre for Invasion Biology, Stellenbosch University, Matieland, 7602, South Africa
- Mathematical and Physical Biosciences, African Institute for Mathematical Sciences, Muizenberg, 7945, South Africa
| | - Richard E Plant
- Department of Plant Sciences and Biological and Agricultural Engineering, University of California, Davis, California, 95616, USA
| | - Min Su
- School of Mathematics, Hefei University of Technology, Hefei, 230009, China
| | - Nikos T Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, School of Agricultural Sciences, University of Thessaly, Thessaly, 38446, Greece
| | - Tim E Carpenter
- School of Veterinary Medicine, University of California, Davis, California, 95616, USA
| | - Zhihong Li
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - James R Carey
- Department of Entomology, University of California, Davis, California, 95616, USA
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15
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Invasive Bark Beetles (Coleoptera, Curculionidae, Scolytinae) in Chile and Argentina, Including Two Species New for South America, and the Correct Identity of the Orthotomicus Species in Chile and Argentina. DIVERSITY 2018. [DOI: 10.3390/d10020040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Lloret F, Kitzberger T. Historical and event-based bioclimatic suitability predicts regional forest vulnerability to compound effects of severe drought and bark beetle infestation. GLOBAL CHANGE BIOLOGY 2018; 24:1952-1964. [PMID: 29316042 DOI: 10.1111/gcb.14039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/30/2017] [Accepted: 12/13/2017] [Indexed: 06/07/2023]
Abstract
Vulnerability to climate change, and particularly to climate extreme events, is expected to vary across species ranges. Thus, we need tools to standardize the variability in regional climatic legacy and extreme climate across populations and species. Extreme climate events (e.g., droughts) can erode populations close to the limits of species' climatic tolerance. Populations in climatic-core locations may also become vulnerable because they have developed a greater demand for resources (i.e., water) that cannot be enough satisfied during the periods of scarcity. These mechanisms can become exacerbated in tree populations when combined with antagonistic biotic interactions, such as insect infestation. We used climatic suitability indices derived from Species Distribution Models (SDMs) to standardize the climatic conditions experienced across Pinus edulis populations in southwestern North America, during a historical period (1972-2000) and during an extreme event (2001-2007), when the compound effect of hot drought and bark beetle infestation caused widespread die-off and mortality. Pinus edulis climatic suitability diminished dramatically during the die-off period, with remarkable variation between years. P. edulis die-off occurred mainly not just in sites that experienced lower climatic suitability during the drought but also where climatic suitability was higher during the historical period. The combined effect of historically high climatic suitability and a marked decrease in the climatic suitability during the drought best explained the range-wide mortality. Lagged effects of climatic suitability loss in previous years and co-occurrence of Juniperus monosperma also explained P. edulis die-off in particular years. Overall, the study shows that past climatic legacy, likely determining acclimation, together with competitive interactions plays a major role in responses to extreme drought. It also provides a new approach to standardize the magnitude of climatic variability across populations using SDMs, improving our capacity to predict population's or species' vulnerability to climatic change.
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Affiliation(s)
- Francisco Lloret
- CREAF Cerdanyola del Vallès, Bellaterra, Spain
- Univ Autònoma Barcelona, Cerdanyola del Vallès, Spain
| | - Thomas Kitzberger
- Laboratorio Ecotono, INIBIOMA-CONICET, Universidad Nacional del Comahue, Bariloche, Argentina
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Ireland KB, Bulman L, Hoskins AJ, Pinkard EA, Mohammed C, Kriticos DJ. Estimating the potential geographical range of Sirex noctilio: comparison with an existing model and relationship with field severity. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1721-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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