Journal of Pest Science最新文献

{"title":"Artificially selected starvation-resistant lines of Pachycrepoideus vindemmiae with multiple beneficial traits: Shedding new light on stress resistance mechanisms and biological control applications of natural enemies","authors":"Ziwen Teng, Yunjie Liu, Minghao Jiang, Chun Jiang, Yikun Zhang, Chen Chen, Fanghao Wan, Hongxu Zhou","doi":"10.1007/s10340-025-01881-7","DOIUrl":"https://doi.org/10.1007/s10340-025-01881-7","url":null,"abstract":"<p>Artificial selection for stress resistance in natural enemies is a promising approach to enhance their effectiveness in biological control. However, documented cases regarding artificial selection for starvation resistance in natural enemy insects are lacking. This study addresses this gap by selecting starvation-resistant lines of the parasitoid wasp <i>Pachycrepoideus vindemmiae</i>, including food deprivation resistance lines and food and water deprivation resistance lines. Our results demonstrate that all selected lines exhibited significantly improved survival abilities compared to non-selected lines. Moreover, resistance to starvation persisted across generations without artificial selection under starvation conditions, indicating stable inheritance of this trait. We also observed extended lifespan in female adults and enhanced resistance to desiccation and low temperature in both males and females from the resistance lines. Additionally, we conducted preliminary exploration of the mechanisms underlying starvation resistance in these resistant lines through transcriptome sequencing for the first time. The analysis revealed that, under starvation stress, pathways such as amino acid metabolism and nucleotide metabolism exhibited consistent expression patterns in both resistant and non-resistant lines. However, specific pathways including arachidonic acid metabolism in lipid metabolism, and glyoxylate and dicarboxylate metabolism as well as glycolysis/gluconeogenesis in carbohydrate metabolism, were upregulated only in the resistant lines. These findings suggest that starvation resistance in the resistance lines involves multiple molecular pathways. This study represents the first successful artificial selection for starvation-resistant natural enemy lines, offering valuable insights for utilizing natural enemies effectively and understanding stress resistance mechanisms for potential genetic modification of beneficial traits.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"38 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143538434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Larvicidal effect and mechanism of action of the essential oil and major compound from Piper brachypetiolatum against Aedes aegypti larvae, with protection of non-target aquatic animals","authors":"Suelen C. Lima, André C. de Oliveira, Maria Luiza L. da Costa, Dayane D. Abensur, Aylane Tamara dos S. Andrade, Hergen V. de Souza, Cláudia P. S. Tavares, Sergio M. Nunomura, Rita C. S. Nunomura, Rosemary A. Roque","doi":"10.1007/s10340-024-01861-3","DOIUrl":"https://doi.org/10.1007/s10340-024-01861-3","url":null,"abstract":"<p>Botanical larvicides, such as essential oils (EO) from the <i>Piper</i> species, offer eco-friendly mosquito control by targeting Culicidae larvae while exhibiting low toxicity to non-target aquatic animals. This study investigated the larvicidal activity and mechanism of action of the essential oil (EO) from <i>Piper brachypetiolatum</i> and its main compound, (<u>E</u>)-nerolidol, against <i>Aedes aegypti</i>, as well as the effects on non-target aquatic organisms <i>Toxorhynchites haemorrhoidalis</i>, <i>Anisops bouvieri</i>, and <i>Diplonychus indicus</i>. The EO was extracted from the leaves of <i>P. brachypetiolatum</i> using hydrodistillation, yielding 1.5 ± 0.7%. Gas chromatography revealed the presence of sesquiterpenes (64.70%), oxygenated sesquiterpenes (17.64%), monoterpenes (11.76%), and oxygenated monoterpenes (5.88%), with (<i>E</i>)-nerolidol as the major compound (64.32%). The EO and (<i>E</i>)-nerolidol exhibited significant larvicidal activity against A<i>. aegypti</i>, with LC₅₀ values of 15.51 and 9.50 mg/L, respectively. They also inhibited AChE activity (IC₅₀ values of 44.97 and 11.07 mg/L, respectively) and induced RONS overproduction (<i>p</i> &lt; 0.05) compared to the positive control, α-cypermethrin. Additionally, the EO and (<i>E</i>)-nerolidol showed no lethal effects on <i>T. haemorrhoidalis</i>, <i>A. bouvieri</i>, and <i>D. indicus</i>, with these species exhibiting 100% survival after exposure. In contrast, <i>α</i>-cypermethrin caused 100% mortality in these species. These findings highlight the potential of the EO from <i>P. brachypetiolatum</i> and (<i>E</i>)-nerolidol as effective and environmentally friendly alternatives for controlling <i>A. aegypti</i> larvae.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"28 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overall repellent effect of plant essential oils on insect choice behaviour: a meta-analysis","authors":"Julieta Soledad Arena, María Rosa Rossetti, Adriana Salvo","doi":"10.1007/s10340-025-01877-3","DOIUrl":"https://doi.org/10.1007/s10340-025-01877-3","url":null,"abstract":"<p>Essential oils are considered low environmental impact alternatives for the control of insects harmful to crops and human health. While there is extensive literature on the bioactivities of essential oils on insects, no quantitative syntheses have been conducted to provide a comprehensive overview of their effects. This study aimed to identify general patterns in the effects of essential oils on insect behaviour through meta-analysis, with a specific focus on their choice of food, oviposition sites, and resting sites. We also examined the influence of plant family, insect characteristics, and methodological aspects on these patterns. The results of the meta-analysis provided evidence of an overall repellent effect of essential oils on insects. Insects avoided feeding on food treated with essential oils, as well as laying eggs and staying in areas treated with these compounds. The choice of oviposition and resting sites was significantly influenced by the plant family from which the essential oil was obtained and by the insect order. Also, the insect feeding guild was a significant moderator for the three response variables, with hematophagous and granivorous insects showing stronger avoidance responses. Furthermore, immature insects were more strongly repelled by essential oils compared to adults in their food consumption, and effects of essential oils varied depending on the experimental scale. This study reports, for the first time, global patterns of bioactivity of essential oils on insects and highlights the great potential of these botanicals to be used as repellents in strategies to control agricultural pests and insects of health concern.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"210 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exogenous methyl jasmonate-mediated physiological and transcriptomic network improves thrips tolerance in alfalfa (Medicago sativa)","authors":"Shuang Shuang, Xiaowei Huo, Qi Chen, Rui Dai, Jianwei Li, Jiaxin Yan, Xiaohong Jiang, Yao Tan, Zhiqiang Zhang","doi":"10.1007/s10340-025-01878-2","DOIUrl":"https://doi.org/10.1007/s10340-025-01878-2","url":null,"abstract":"<p>Exogenous methyl jasmonate is widely acknowledged for its role in triggering plants’ defense systems against pest invasions. Nonetheless, there has been a dearth of research exploring the elicitation of defense mechanisms by jasmonic acid in alfalfa. In order to investigate the effect of methyl jasmonate on thrips resistance in alfalfa, <i>Medicago sativa</i> L.cv. Caoyuan No. 4 was exogenously sprayed with different concentrations of methyl jasmonate, and thrips and <i>Orius strigicollis</i> (natural enemies) behavioral choice, physiological and transcriptomic analyses were performed. The results revealed a concentration-dependent inducible effect of methyl jasmonate on the behavioral choice, feeding and oviposition of thrips mediated by volatile organic compounds. Moreover, methyl jasmonate treatment at varying concentrations significantly influenced the activity levels of defense enzymes and secondary metabolites in alfalfa. Notably, the most pronounced induction effect of methyl jasmonate was observed at a concentration of 0.1 mmol/L, particularly evident in the enhanced activity of peroxidase, polyphenol oxidase, lipoxygenase and tannins. Transcriptome analysis showed that differentially expressed genes between methyl jasmonate treatment and control group (methyl jasmonate-free treatment) were mainly enriched in metabolic pathways and plant hormone signal transduction pathways such as terpenoid biosynthesis, linoleic acid metabolism and jasmonate signal transduction. Subsequent pathway analysis elucidated the potential of methyl jasmonate treatment to elevate endogenous jasmonic acid levels and instigate the activation of the jasmonate signaling pathway.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"83 1 Pt 2 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Botanical products for managing Philaenus spumarius, vector of Xylella fastidiosa subspecies pauca","authors":"Stefano Bedini, Fabio Marino, Priscilla Farina, Onofrio Marco Pistillo, Ilaria D’Isita, Roberto Rizzo, Sonia Ganassi, Filippo Maggi, Elisabetta Gargani, Angelo Canale, Andrea Lucchi, Pio Federico Roversi, Antonio De Cristofaro, Nicolas Desneux, Giacinto Salvatore Germinara, Giovanni Benelli","doi":"10.1007/s10340-025-01871-9","DOIUrl":"https://doi.org/10.1007/s10340-025-01871-9","url":null,"abstract":"<p><i>Xylella fastidiosa</i>, a notorious bacterial plant pathogen with a broad host range, has recently emerged as a significant threat to olive trees worldwide, causing the Olive Quick Decline Syndrome (OQDS). This disease severely affects olive production and leads to the death of the plants, causing significant economic losses and dramatic changes in the landscape. To date, no determined control strategies have been identified to fight the OQDS. Since the pathogen is an obligate host of some species of spittlebugs, managing the insect vectors themselves may be an effective approach for limiting OQDS. For that, plant-based products, due to their low toxicity to non-target organisms and minimal adverse effects on the environment, have gained significant interest as tools to tackle the diffusion of OQDS through <i>X. fastidiosa</i> insect vector management. Ongoing studies are exploring the role of plant secondary metabolites as infochemicals in insect–host plant interactions. Some of these focus on essential oils, plant extracts, and their major constituents, examining their potential role as toxic or attractive/repellent active ingredients against insects. These compounds are being evaluated as bioinsecticides or in semiochemical-based control strategies (e.g. mass trapping, push–pull, attract-and-kill) potentially relevant for monitoring and controlling the meadow spittlebug <i>Philaenus spumarius</i> (L.), the primary vector of <i>X. fastidiosa</i> subspecies <i>pauca</i>. In this scenario, our review offers an analysis of the current state of research on botanical products applied as toxicants or behaviour-modifying tools towards <i>P. spumarius</i>, highlighting emerging developments, innovative technologies, and recent breakthroughs.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"3 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pimpinella anisum essential oil and trans-anethole activity against key insect pests and non-target ants","authors":"Valeria Zeni, Renato Ricciardi, Alberto Masoni, Giacomo Santini, Filippo Di Giovanni, Christian Frasconi, Andrea Lucchi, Angelo Canale, Eleonora Spinozzi, Filippo Maggi, Nicolas Desneux, Giovanni Benelli, Giulia Giunti","doi":"10.1007/s10340-024-01842-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01842-6","url":null,"abstract":"<p>Pest control has faced several challenges during the last decades, increasing research about innovative ecofriendly bioinsecticides to replace and integrate the conventional strategies. In this scenario, botanical extracts are promising substances for pest management. In this study, we developed a novel small-scale sprayer for precision application of botanical insecticides on plant material; the insecticidal activity of the essential oil (EO) from cultivated aniseed, <i>Pimpinella anisum</i> L., and its main constituent <i>trans</i>-anethole (&gt; 95% of the whole composition) was tested against three key polyphagous pests of fruit crops, as well as toward a non-target ant species, <i>Crematogaster scutellaris</i> (Olivier)<i>.</i> Both the EO and its main constituent were effective against <i>Lobesia botrana</i> (Denis &amp; Schiffermüller) larvae, as well as against <i>Ceratitis capitata</i> (Wiedemann) adults in ingestion toxicity trials. However, <i>C. capitata</i> (LC₅₀ 0.97 and 0.80 µL/mL for EO and <i>trans</i>-anethole, respectively) was more susceptible than <i>L. botrana</i> (LC₅₀ 38.71 and 24.16 µL/mL for EO and <i>trans</i>-anethole, respectively). Furthermore, both the EO and <i>trans</i>-anethole tested at 45 μL/mL had a high antifeedant effect (&gt; 80%) on <i>Spodoptera littoralis</i> (Boisduval) larvae. From a non-target point of view, <i>P. anisum</i> EO caused moderate lethality on <i>C. scutellaris</i> ants, with significant reduction of survival after 96 h at the highest tested concentration. Overall, aniseed EO could represent a valuable bioinsecticide which could be used in the field at low concentration for organic management of polyphagous crop pests.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"50 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aphicidal and antifeedant activity of Synandrospadix vermitoxicus extracts against Myzus persicae on potato plants","authors":"Guadalupe López-Isasmendi, Cristina Renata Machado-Assefh, María Guadalupe Reyes, María Laura Uriburu, Adriana Elisabet Alvarez","doi":"10.1007/s10340-024-01849-z","DOIUrl":"https://doi.org/10.1007/s10340-024-01849-z","url":null,"abstract":"<p>Potato crops are kept virus-free by controlling aphid vectors through control schemes that require multiple treatments with insecticides. The aphid <i>Myzus persicae</i> has developed different mechanisms of resistance to insecticides, and there is a growing need of sources for new, more efficient insecticides. <i>Synandrospadix vermitoxicus</i> (Griseb.) Engl.—an Araceae family native to the northwestern region of Argentina, Paraguay, and Bolivia—has been locally described as having insecticidal properties against insect larvae and could be a potential source of new natural insecticides against aphids. We tested the antifeedant and aphicidal effects of two extracts from the tubers of <i>S. vermitoxicus</i>, ethanolic and hexanic, on <i>M. persicae</i>. We treated potato leaves with the extracts to assess their antifeedant effect by measuring host preference changes in <i>M. persicae</i>. Then, we evaluated its aphicidal effect by offering the extracts to aphids through artificial diets, and we tested the aphid probing behavior by electrical penetration graph. We also analyzed the extracts for the main classes of secondary metabolites. We found that both extracts have antifeedant effects, with the hexanic being the strongest, and aphid probing behavior was accordingly affected on leaves treated with hexanic extract. While the ethanolic extract affected the survival of aphids fed on artificial diets, the hexanic extract did not. The analysis of <i>S. vermitoxicus</i> extracts shows an array of flavonoids and triterpenoids compounds. Our results show that the tubers of this plant could be a source for a novel product with potential use on the control of <i>M. persicae</i> on potato crops.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"3 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urban and agricultural areas under threat of the termite pest genus Heterotermes: insights from species distribution modelling and phylogeny","authors":"Edouard Duquesne, Denis Fournier","doi":"10.1007/s10340-025-01866-6","DOIUrl":"https://doi.org/10.1007/s10340-025-01866-6","url":null,"abstract":"<p>Termites, particularly those of the genus <i>Heterotermes</i>, are significant pests impacting urban and agricultural environments worldwide. Despite their impact, the distribution of <i>Heterotermes</i> has been largely overlooked. Our study aims to predict the potential distribution of 15 <i>Heterotermes</i> species by integrating bioclimatic, land-use, connectivity, soil and elevation variables into species distribution models (SDMs). These models project habitat suitability under three Shared Socioeconomic Pathways (SSP1-2.6, SSP2-4.5, SSP5-8.5) for short-term (2021–2040), mid-term (2041–2060) and long-term (2061–2080) scenarios. Our results underscore the critical influence of temperature, connectivity and soil moisture on termite distribution, revealing potential expansions into new regions due to climate change. Most parts of the Neotropics and Australia could become suitable for at least one species. Our study also examines the efficacy of incorporating phylogenetic data into SDMs, demonstrating its enhanced reliability for predicting distributions of co-occurring species, though its effectiveness diminishes for geographically isolated ones. Future projections indicate significant range shifts due to increased urbanization, agriculture expansion and climate change. Neotropical species are likely to face habitat reductions, especially in South American forests, while several Australian and major structural pest species may expand their range. Currently, densely populated cities in the Neotropics, the south-western US, Australia and South Asia could be within the range of one to five <i>Heterotermes</i> species. In agricultural areas, Australia and the Neotropics—both heavily reliant on agriculture—are highly vulnerable, and this vulnerability is expected to worsen as more land is converted to agricultural use.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"10 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of symbiont-targeted control on non-target stink bugs and their associated egg parasitoids: Could this technique be suitable against Halyomorpha halys in New Zealand?","authors":"Sofia V. Prieto, Gonzalo A. Avila, Barbara Lima, Elena Gonella, Alberto Alma","doi":"10.1007/s10340-025-01875-5","DOIUrl":"https://doi.org/10.1007/s10340-025-01875-5","url":null,"abstract":"<p>The potential arrival of <i>Halyomorpha halys</i> in New Zealand jeopardizes a vast range of crops. Therefore, different preparedness strategies are being assessed before its arrival. A symbiont-targeted control strategy might be used along with other control tactics such as biological control. Prior its implementation, it is necessary to assess its potential impact on non-target stink bug species and their associated egg parasitoids. In this study, the effect of symbiont-targeted control was evaluated on three stink bug species in New Zealand, <i>Oechalia schellenbergii</i> (a native predatory species), <i>Nezara viridula</i> (a cosmopolitan pest) and <i>Monteithiella humeralis</i> (a non-pest adventive species). The interference of anti-symbiont treatment of egg masses with their associated <i>Trissolcus</i> egg parasitoids, namely <i>T. basalis</i> and <i>T. oenone</i>, was also tested. A variable response to symbiont elimination was observed in stink bug species, with <i>N. viridula</i> and <i>M. humeralis</i> undergoing high mortality and no negative effect detected for <i>O. schellenbergii</i>. Parasitism of <i>N. viridula</i> by <i>T. basalis</i> declined on egg masses treated with an anti-symbiont biocomplex or water. Similar results were obtained for <i>T. oenone</i> parasitizing eggs of <i>M. humeralis</i>; while, a parasitism increase was observed for <i>O. schellenbergii</i> egg masses exposed to anti-symbiont treatment and treated with water. These results confirm previous evidence of species-specific response to anti-symbiont control and indicate a moderate and variable effect on egg parasitism. Such responses suggest that symbiont-targeted control would not significantly interfere with the native insect communities that may interact with <i>H. halys</i>, encouraging the future incorporation of symbiont-targeted control in pest management programs.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"47 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing inward and outward strategies for delimiting non-native plant pest outbreaks","authors":"Hongyu Sun, Jacob C. Douma, Martijn F. Schenk, Wopke van der Werf","doi":"10.1007/s10340-024-01859-x","DOIUrl":"https://doi.org/10.1007/s10340-024-01859-x","url":null,"abstract":"<p>The delimitation of outbreaks is an essential step in the containment and eradication of non-native plant pests. Outbreaks are habitually delimited by sampling around the initial finding, moving away from this locus in several directions as long as infestations are found (outward strategy). An alternative, inward, strategy would entail starting delimitation with an initial estimate of the location of the frontier and then sampling inward until the first infestations are found or outward until no more infestations are found. We used individual-based modelling to compare the effectiveness and sampling effort of the two strategies. Both successfully contained &gt; 99% of infested plants within the delimited zone. Yet, both had a low probability (&lt; 15%) of containing all the infested plants within the delimited zone. The number of samples of the inward strategy depended greatly on the size of the initially hypothesized infested zone. Best performance of this strategy was obtained with an accurate initial estimate of the infested zone width, while sample size increased strongly when the estimated frontier was far beyond the true location of the frontier. Consequently, the outward strategy uses fewer samples on average than the inward strategy when the position of the frontier is uncertain. Both strategies were prone to error when delimiting outbreaks caused by pests with fat-tailed dispersal. Whether the inward or outward strategy is more effective depends on the certainty about the true position of the leading frontier of the outbreak. Possibilities are discussed for maximizing the cost-effectiveness of sampling for outbreak delimitation.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"23 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}