Identifying new associations between invasive aphids and Pinaceae trees using plant sentinels in botanic gardens

Redlich, Sarah; Clemens, John D.; Bader, Martin K.‐F.; Pendrigh, Dean; Perret‐Gentil, Anouchka; Godsoe, William; Teulon, D.A.J.; Brockerhoff, Eckehard G.

doi:10.1007/s10530-018-1817-x

Cited by 10 publications

(4 citation statements)

References 34 publications

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“…This challenge is more problematic for some groups, such as wood-boring insects or stem canker fungi than others. Also, a high density ports and airports (Brockerhoff et al 2006a, Rassati et al 2015, urban areas (Paap et al 2017), arboreta and botanic gardens (Hulbert et al 2019, Redlich et al 2019, Wondafrash et al 2021, and plant nurseries (Liebhold et al 2012, Santini et al 2013.…”

Section: In-patria: Native Trees In Exporting Countriesmentioning

confidence: 99%

“…This was the case, for example, with London plane (Platanus x acerifolia) and polyphagous shot hole borer (Euwallacea fornicatus; Paap et al 2018) and with pines (Pinus spp.) and pine aphid species (Eulachnus brevipilosus and Essigella californica; Redlich et al 2019). Many botanic gardens are linked to the International Plant Sentinel Network (Barham et al 2015), and their staffs can assist with surveys and access to data on historical occurrences of pests.…”

Section: √ √mentioning

confidence: 99%

“…We identify four general categories of approaches, two of which are largely experience-based and analytical, and two of which are directly empirical. These broad categories include using prior pest activity in species' native and previously invaded regions (Burgman et al 2014, Sequeira and Griffin 2014, Kumschick et al 2015; generalized modeling of future impacts using statistical patterns of traits, habitats, and gene sequences associated with high impact (Mech et al 2019, Hamelin andRoe 2020); sentinel plantations and botanic gardens that naturally expose nonnative trees to potential damage from local insect and pathogen species (Eschen et al 2019, Mansfield et al 2019, Redlich et al 2019; and laboratory assays using detached plant parts or seedlings (also including small ramets hereafter) under experimentally controlled conditions (Eager et al 2004, Newhouse et al 2014, Lynch et al 2016. We briefly describe each approach, identify its underlying assumptions, summarize its major advantages and limitations, and evaluate how and under what conditions it best contributes to the overall challenge of predicting impacts of invasive insects and pathogens on trees.…”

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confidence: 99%

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Approaches to Forecasting Damage by Invasive Forest Insects and Pathogens: A Cross-Assessment

Raffa

Brockerhoff²,

Grégoire

et al. 2023

BioScience

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Nonnative insects and pathogens pose major threats to forest ecosystems worldwide, greatly diminishing the ecosystem services trees provide. Given the high global diversity of arthropod and microbial species, their often unknown biological features or even identities, and their ease of accidental transport, there is an urgent need to better forecast the most likely species to cause damage. Several risk assessment approaches have been proposed or implemented to guide preventative measures. However, the underlying assumptions of each approach have rarely been explicitly identified or critically evaluated. We propose that evaluating the implicit assumptions, optimal usages, and advantages and limitations of each approach could help improve their combined utility. We consider four general categories: using prior pest status in native and previously invaded regions; evaluating statistical patterns of traits and gene sequences associated with a high impact; sentinel and other plantings to expose trees to insects and pathogens in native, nonnative, or experimental settings; and laboratory assays using detached plant parts or seedlings under controlled conditions. We evaluate how and under what conditions the assumptions of each approach are best met and propose methods for integrating multiple approaches to improve our forecasting ability and prevent losses from invasive pests.

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Section: In-patria: Native Trees In Exporting Countriesmentioning

confidence: 99%

Section: √ √mentioning

confidence: 99%

mentioning

confidence: 99%

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Approaches to Forecasting Damage by Invasive Forest Insects and Pathogens: A Cross-Assessment

Raffa

Brockerhoff²,

Grégoire

et al. 2023

BioScience

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“…A sentinel garden is an effective means for studying and providing an early warning about invasive or alien pests [16,17]. The method involves growing and monitoring plant species in areas outside their native range, identifying risks posed by insects and pathogens, thereby providing valuable early warning information to the country of origin [18].…”

Section: Introductionmentioning

confidence: 99%

Novel Pathogen–Plant Host Interaction: Colletotrichum jiangxiense and Fraxinus americana L. (White Ash) in a Sentinel Garden in China

Chang,

Li,

Gao

et al. 2023

Plants

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Fraxinus americana L. (white ash), a native North American tree commonly cultivated for its ornamental qualities, displayed symptoms of leaf spot disease in a sentinel garden located in Nanjing, Jiangsu, China, in 2022. This disease led to premature leaf shedding, adversely affecting the plant’s growth and substantially diminishing its ornamental value. Potential fungal pathogens were isolated from the diseased leaves and the subsequent application of Koch’s postulates confirmed the pathogenicity of the fungal isolates (BL-1, BL-2). Through a combination of multi-locus phylogenetic analysis, including ITS, ACT, ApMat, CAL, CHS-1, GAPDH, and TUB2, alongside morphological assessments, the fungus was conclusively identified as Colletotrichum jiangxiense. This represents the first record of C. jiangxiense affecting white ash, highlighting the important role of sentinel gardens in uncovering novel pathogen–plant host interactions.

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Monitoring and Surveillance of Forest Insects

Brockerhoff

Corley

Jactel

et al. 2023

Forest Entomology and Pathology

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Monitoring of insect populations is widely used in forest entomology in the context of biodiversity studies, as an aspect of pest management, and for the detection and surveillance of non-native invasive species. In particular, monitoring is undertaken to obtain information on the presence or abundance of particular species, to study their phenology (e.g. the time of oviposition or flight periods), to predict pest population size, spread and damage, or to determine if pest management activities are required. A wide variety of methods are being used for these purposes including physical surveys, the use of insect traps, molecular methods, as well as aerial surveys and remote sensing. This chapter focusses on some of the more important methods to provide an overview of the objectives and applications of monitoring and surveillance of forest insects. The principles of each method and common uses are explained and illustrated with case studies on prominent forest insects including the pine processionary moth (Thaumetopoea pityocampa), the Sirex wood wasp (Sirex noctilio), spongy moth (Lymantria dispar), bark beetles such as Ips typographus, and the brown spruce longhorn beetle (Tetropium fuscum). The chapter also explores statistical considerations and issues such as imperfect relationships between trap catch and the local population size of target species. Niche methods that are not widely used but have strengths in some situations (e.g. detector dogs for detection of Anoplophora glabripennis and other invasive species) or are still in development (e.g. e-noses and acoustic detection) are also discussed.

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Identifying new associations between invasive aphids and Pinaceae trees using plant sentinels in botanic gardens

Cited by 10 publications

References 34 publications

Approaches to Forecasting Damage by Invasive Forest Insects and Pathogens: A Cross-Assessment

Approaches to Forecasting Damage by Invasive Forest Insects and Pathogens: A Cross-Assessment

Novel Pathogen–Plant Host Interaction: Colletotrichum jiangxiense and Fraxinus americana L. (White Ash) in a Sentinel Garden in China

Monitoring and Surveillance of Forest Insects

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