Stefanie Fischnaller, Giacomo Bulgarini, Angelika Gruber, Clara Frasconi Wendt, Peter Neulichedl, Manfred Wolf
{"title":"Overwintering mortality in Halyomorpha halys (Hemiptera: Pentatomidae): insights from laboratory and field studies.","authors":"Stefanie Fischnaller, Giacomo Bulgarini, Angelika Gruber, Clara Frasconi Wendt, Peter Neulichedl, Manfred Wolf","doi":"10.1093/ee/nvag054","DOIUrl":"10.1093/ee/nvag054","url":null,"abstract":"<p><p>Overwintering success in insects is shaped by both physiological state and environmental conditions. The invasive brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) survives temperate winters through a facultative adult diapause. We quantified overwintering mortality over 4 consecutive winters (2020/2021 to 2023/2024) in South Tyrol, Italy, using controlled laboratory conditions (9 °C, 8:16 h L:D) and a sheltered semi-field setup. Mortality in field-collected cohorts ranged from 48.0% to 65.0% in laboratory trials and 35.2% to 58.9% outdoors, with substantial variation among cohorts overwintered under identical conditions. We compared overwintering survival of reproductively active (fecund) versus diapause-induced (non-fecund) adults produced in the laboratory. Reproductively active individuals experienced near-complete mortality (99.3%), whereas diapause-induced adults showed markedly lower mortality (20.6%). Interannual differences suggested environmental effects, but temperature effects were not consistently associated with observed mortality patterns. Winters with lower minimum temperatures (down to -12.38 °C) and greater cumulative cold exposure were associated with elevated mortality (up to 58.9%). However, substantial mortality also occurred during milder winters, indicating context-dependent temperature effects. Overall, cohort identity was a dominant source of heterogeneity, likely reflecting variation in reproductive state, energetic reserves, and pathogen pressure, as well as other abiotic factors. These results indicate that overwintering mortality in H. halys cannot be captured by a single universal parameter. Improved forecasts of spring population density will require late-season sampling from confirmed overwintering sites and, where feasible, physiological screening to estimate diapause incidence and derive realistic overwintering mortality. Integrating diapause dynamics and associated changes in cold tolerance into mechanistic models may further improve forecasting accuracy.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13211973/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148028452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of glyphosate on wild ground nesting bees (Hymenoptera: Apoidea).","authors":"Amanda S Denny, Clare C Rittschof","doi":"10.1093/ee/nvag065","DOIUrl":"https://doi.org/10.1093/ee/nvag065","url":null,"abstract":"<p><p>Herbicides, including glyphosate, have negative impacts on honey bees (Hymenoptera: Apidae, Apis mellifera, Linnaeus, 1758) and bumble bees (Bombus spp., Hymenoptera: Apidae, Latreille, 1802), but no study has addressed effects on wild, ground-nesting bees in a field setting. Over a 3-yr study, we identified pairs of wild bee nest aggregations and applied a topical spray glyphosate treatment to 1 member of each pair. We excavated nests, collected bees, and performed mortality and mass comparisons between the glyphosate-treated and untreated aggregations. We collected overwintered adults to assess the effects of developmental glyphosate exposure on adult mass and body size, and we reared excavated larvae to monitor survival to adulthood and measure body mass. We recovered several species of adult Andrena (Hymenoptera: Andrenidae, Fabricius, 1775), Colletes (Hymenoptera: Colletidae, Latreille, 1802), Lasioglossum (Hymenoptera: Halictidae, Curtis, 1833), Nomada (Hymenoptera: Apidae, Scopoli, 1770), and Halictus (Hymenoptera: Apidae, Latreille, 1804), and we found no significant effects of glyphosate exposure on larval survival or the overall number of bees recovered from an aggregation. We found that adult Andrena from glyphosate-treated aggregations were larger and had greater mass than those from untreated aggregations, but found no differences in larval mass as a function of treatment. Our results suggest that developing ground-nesting bees are not at risk of mortality or loss of mass due to surface applications of glyphosate, but increased site replication, and studies at larger spatial scales, are necessary to fully understand these risks.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148293814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Contact toxicity and mechanisms of 4 compounds from Evodia rutaecarpa against Tribolium castaneum (Coleoptera: Tenebrionidae).","authors":"Weiwei Yang, Yingqi Wang, Juqin Cao","doi":"10.1093/ee/nvag060","DOIUrl":"10.1093/ee/nvag060","url":null,"abstract":"<p><p>Tribolium castaneum causes significant damage to grains and their products. Increased resistance to synthetic insecticides poses a further challenge to pest control, highlighting botanical insecticides as an alternative. Evodia rutaecarpa is rich in anti-insect compounds and possesses insecticidal activity against T. castaneum. However, the underlying mechanism of action remains unclear. We evaluated the contact toxicity of 4 active compounds from E. rutaecarpa, linalool, caryophyllene oxide, α-terpineol, and rutaecarpine, against T. castaneum via topical application, and assessed their effects on neural and detoxification enzymes using spectrophotometry. α-Terpineol showed the highest contact toxicity, followed by rutaecarpine (LD50 = 63.42 μg/adult), linalool (LD50 = 74.07 μg/adult), and caryophyllene oxide (LD50 = 105.60 μg/adult). All 4 compounds affected key enzymes, with decreased AChE and increased GST activity. CES activity initially increased and then declined, suggesting neurotoxic disruption and detoxification induction. Transcriptomic and proteomic analyses were conducted to identify pathways affected by α-terpineol, indicating that the mechanism involves dysregulation of detoxification, neurotransmission, and developmental pathways, ultimately disrupting physiological and metabolic processes in T. castaneum. After cuticular penetration, α-terpineol activated detoxification genes (CYPs, ESTs, GSTs, and UGTs) and ATP-binding cassette transporters, while downregulating genes involved in cuticle formation (CHTs, CP63, Obstructor-B), energy metabolism (Treh), and neurotransmission (AChE). Molecular docking analysis revealed that the 4 compounds formed stable complexes with AChE, CES, and GST by hydrogen bonding, π-interactions, and hydrophobic contacts (binding energies ranged from -9.4 to -4.8 kcal/mol). Therefore, α-terpineol from E. rutaecarpa is a promising insecticide for controlling stored-product insects.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148250036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Emergence patterns of Dasineura oxycoccana (Diptera: Cecidomyiidae) in relation to diel temperature, humidity, and pheromones under field conditions.","authors":"Marice Lopez Laurenti, Oscar E Liburd","doi":"10.1093/ee/nvag049","DOIUrl":"10.1093/ee/nvag049","url":null,"abstract":"<p><p>The blueberry gall midge, Dasineura oxycoccana Johnson (Diptera: Cecidomyiidae), is a key pest of cultivated blueberries (Vaccinium spp.) in North America. Adult emergence often coincides with early floral bud development, making timely detection and control critical for effective pest management. We evaluated diel patterns of adult emergence and larval drop in a naturally infested southern highbush blueberry planting during 2020 and 2022. Larval drop was most pronounced during early morning hours (6 to 9 AM), while female adult emergence peaked in mid-afternoon (12 to 3 PM). Environmental conditions, particularly temperature and relative humidity, were associated with variation in larval drop. In addition, pheromone-baited traps consistently captured more males than unbaited controls. Laboratory olfactometer assays showed reduced male orientation, even when lure dosage was increased, suggesting that emergence patterns and pheromone responses are regulated by interactions with environmental, genetic, and chemical factors. Incorporating regionally calibrated pheromone blends and diel emergence dynamics into monitoring and spray programs may improve the precision and efficacy of integrated pest management strategies targeting this pest.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148197384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marc Marin Agbodjan, Komi Mensah Agboka, John Odindi, Elfatih Abdel-Rahman, Onisimo Mutanga, Frank Chidawanyika, Chrysantus Tanga, Daniel Munyao Mutyambai, Sevgan Subramanian, Bonoukpoè Mawuko Sokame
{"title":"Pest risk modelling for climate-smart vegetable production in East Africa.","authors":"Marc Marin Agbodjan, Komi Mensah Agboka, John Odindi, Elfatih Abdel-Rahman, Onisimo Mutanga, Frank Chidawanyika, Chrysantus Tanga, Daniel Munyao Mutyambai, Sevgan Subramanian, Bonoukpoè Mawuko Sokame","doi":"10.1093/ee/nvag042","DOIUrl":"10.1093/ee/nvag042","url":null,"abstract":"<p><p>Agricultural productivity in East Africa is increasingly threatened by climate-sensitive insect pests. This study investigates the occurrence of key vegetable pests: Brevicoryne brassicae, Plutella xylostella, Maruca vitrata, and Liriomyza mik. A comparative species distribution modelling evaluated pest risk projections under climate change. Four variable selection strategies were tested: case 1 (correlation and variance inflation factor [VIF] filtering across all predictors), case 2 (correlation and VIF filtering of bioclimatic variables merged with other predictors), case 3 (filtering based on environmental values at species occurrence point to approximate realized niches), and case 4 (dimensionality reduction using principal component analysis). These strategies were combined with 3 algorithms: generalized linear model, boosted regression tree, and maximum entropy. In total, 640 spatially occurrence records were analyzed with bioclimatic, elevation, normalized difference vegetation index, solar radiation, wind speed, and land use predictors. Future projections were generated under shared socioeconomic pathways, SSP2-4.5 and SSP5-8.5 (2041-2060), using 4 general circulation models. Model performance varied by species and strategy: case 3 performed best for B. brassicae and P. xylostella, case 1 was most effective for L. mik, and case 2 performed best for M. vitrata. Current suitability maps highlighted high risk zones in central and western Kenya, southwestern Uganda, and Rwanda's northern province. Projections indicated consistent expansions for P. xylostella and L. mik, while B. brassicae and M. vitrata exhibited localized and uncertain shifts. These findings provide decision-ready pest risk maps that can inform climate-smart pest management, including targeted surveillance, resistant crop varieties, and biological control strategies across in East African vegetable systems.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13220763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148053400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Trapping economically important noctuid moths with sex pheromones and floral chemicals.","authors":"Robert L Meagher, Ashley E Tessnow","doi":"10.1093/ee/nvag066","DOIUrl":"10.1093/ee/nvag066","url":null,"abstract":"<p><p>Previous research showed that certain noctuid moths were captured in Unitraps baited with the floral kairomone attractants phenylacetaldehyde and β-myrcene, but comparisons among traps with sex pheromones, floral attractants, and pheromones plus floral attractants was never tested. We compared these treatments in a 17-mo trial at a large agricultural experiment station in north-central Florida. Trap capture of moths to sex pheromone lures for fall armyworm, Spodoptera frugiperda (J. E. Smith) and soybean looper, Chrysodeixis includens (Walker) were compared to capture in traps baited with the volatile floral chemicals. Combination lures that included both female sex pheromone and floral volatiles were added to the trial to determine if there was synergistic attraction to traps. Pheromone lures for corn earworm, Helicoverpa zea (Boddie) were added as a treatment to document seasonality of this pest species in the region. Over the course of the study, we captured over 4,400 fall armyworm moths, with 69% (3,044) found in the pheromone-only traps and 31% (1,377) found in traps baited with the combination lures, suggesting floral attractants repelled fall armyworm moths. Conversely, we collected 912 soybean looper moths, with 32% (288) found in the pheromone-only traps and 68% (624) captured in traps with the combined lures, suggesting the floral attractants synergized soybean looper moth capture. These results suggest that the use of floral kairomone attractants for moth trapping can act as synergists or antagonists to either increase or decrease trap capture, depending on the species of interest.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148250057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Galactose, glucose, and sucrose mediate the host acceptance of Hyphantria cunea (Lepidoptera: Erebidae) larvae.","authors":"Mingyu Xue, Guifang Zhong, Fei Teng, Hongting Zhao, Dejun Hao","doi":"10.1093/ee/nvag059","DOIUrl":"10.1093/ee/nvag059","url":null,"abstract":"<p><p>Hyphantria cunea (Drury) is an invasive polyphagous pest, yet the chemical basis of its larval host acceptance is unclear. Here, we integrated behavioral assays and non-targeted metabolomics to identify key phagostimulants influencing larval host acceptance of H. cunea. Our results exhibited the highest level of acceptance toward Camptotheca acuminata Decne. compared with Populus deltoides W.Bartram ex Marshall, Prunus serrulata Lindl, Taxodium distichum (L.) Rich, and Camphora officinarum Nees, which was significantly correlated with leaf soluble sugar content. Through two-choice assays, we identified galactose, sucrose, and glucose as key phagostimulants that induce feeding acceptance, with effective thresholds of 10, 1, and 10 mM, respectively. In addition, ablation of sensilla styloconica in maxillary galea led to the reduction of larval perception for sucrose and glucose by 19.3% and 14.1%, indicating gustatory mechanism involved in perception for these 2 sugars, while galactose-induced phagostimulatory effect is mediated by other pathways. Our findings establish that these specific sugars serve as critical gustatory cues driving larval host acceptance of H. cunea, laying the groundwork for understanding its rapid host adaptation.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integrative identification of insect flower visitors associated with avocado flowering in Western Australia.","authors":"Miyuki Taniguchi, Giles Hardy, Wei Xu","doi":"10.1093/ee/nvag067","DOIUrl":"10.1093/ee/nvag067","url":null,"abstract":"<p><p>Accurate identification of insect flower visitors is fundamental for understanding crop pollination systems and supporting sustainable production. In Western Australia, avocado (Persea americana Mill.) production relies heavily on insect visitation, yet the taxonomic identity of native flower-visiting taxa remains poorly resolved. This study provides the first integrative identification of insects associated with avocado flowering in Western Australia using a combination of morphological examination and mitochondrial cytochrome c oxidase subunit I (COI) DNA barcoding. Insects were collected from commercial avocado orchards in Carabooda and Pemberton during the flowering seasons of 2019-2021. Besides honeybees, morphological assessment identified 5 dominant native bee taxa, primarily within Lasioglossum (Halictidae), and 3 hoverfly taxa (Syrphidae). DNA barcoding confirmed species-level identities for Lasioglossum lanarium (Smith), L. castor (Smith), and the syrphids Simosyrphus grandicornis (Macquart) and Eristalis tenax (Lannaeus) (≥99% to 100% sequence similarity). In contrast, COI sequences from 3 additional Lasioglossum lineages showed lower similarity to available reference records (eg 96%, 91%, and 94%) and are therefore treated conservatively as Lasioglossum sp. 3 to 5 (morphospecies) rather than assigned species-level names. Overall, 73% of putative avocado flower-visitor taxa were shared between regions, indicating a broadly consistent core assemblage across contrasting climatic zones. By clarifying the taxonomic identity and reporting confidence of key avocado-associated taxa, this study provides a baseline for future work evaluating visitation dynamics, pollen transfer, and management strategies in Australian avocado orchards.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13278782/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148276396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Derrick Conover, Daniel Carrillo, Lukasz L Stelinski, Russell F Mizell, Xavier Martini
{"title":"Push-pull strategy that combines olfactory and visual cues for management of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) in avocado.","authors":"Derrick Conover, Daniel Carrillo, Lukasz L Stelinski, Russell F Mizell, Xavier Martini","doi":"10.1093/ee/nvag046","DOIUrl":"10.1093/ee/nvag046","url":null,"abstract":"<p><p>Ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) pose a significant threat to avocado production primarily because they serve as vectors for Harringtonia lauricola (T.C. Harr., Fraedrich & Aghayeva) Z.W. de Beer & M. Procter, the fungal pathogen responsible for laurel wilt disease. Unfortunately, effective strategies for managing either the pathogen or its beetle vectors remain limited. To address this challenge, we investigated behavioral manipulation as a potential tool for managing vector populations. First, we assessed the effectiveness of combining visual and olfactory cues in developing an attractive bait station in the form of a tree (later designated as \"tree-mimic\"). Next, we incorporated known ambrosia beetle repellents (a verbenone: methyl salicylate blend) into a push-pull strategy targeting natural ambrosia beetle populations. Our results indicated that tree-mimics (cardboard tubes wrapped in UV-reflecting mulch and baited with slow-release ethanol dispensers) were highly attractive to ambrosia beetles. They outperformed other tested combinations of visual and olfactory lures. In replicated small-plot trials under commercial avocado grove conditions, plots treated with verbenone and methyl salicylate wax matrix had significantly fewer beetle captures compared to untreated controls. This reduction occurred regardless of whether tree-mimics were deployed 3 m beyond the plot boundaries. Overall, our results suggest that using verbenone and methyl salicylate blend alone as a repellent may, in some cases, be sufficient to reduce beetle landings on avocado trees. While tree-mimics proved effective in attracting beetles, their impact on reducing beetle presence was only marginal on trees with direct repellent application.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147971455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meredith S Bean, R Talbot Trotter, Jennifer Chandler, Robert Ritger, Cooper Schroeder, Jess A Hartshorn, Brandon K Peoples, Kyle Barrett, Scott E Pfister, David R Coyle
{"title":"Local dispersal and growth in an island population of Anoplophora glabripennis (Coleoptera: Cerambycidae) in South Carolina.","authors":"Meredith S Bean, R Talbot Trotter, Jennifer Chandler, Robert Ritger, Cooper Schroeder, Jess A Hartshorn, Brandon K Peoples, Kyle Barrett, Scott E Pfister, David R Coyle","doi":"10.1093/ee/nvag057","DOIUrl":"10.1093/ee/nvag057","url":null,"abstract":"<p><p>Invasive populations of Anoplophora glabripennis (Motschulsky) threaten forested systems across the globe. Eradication programs in North America can span hundreds of square kilometers, yet eradication efforts are carried out at the individual tree or stand scale. An A. glabripennis infestation was discovered in South Carolina in 2020; within this landscape, a small island was found on which 85% of A. glabripennis host trees were infested. The removal of all infested trees from the island in 2021 provided an opportunity to use this discrete population as a natural microcosm in which the spatial locations for the 14,615 oviposition sites and 1,611 exit holes in the population were documented. Data show A. glabripennis population growth rates varied substantially among individual trees. At the scale of the island, beetle density increased exponentially over time, while the number of infested trees on the island increased at a more moderate rate. The spatial and temporal patterns suggest several causal mechanisms and highlight the need for additional studies including the potential that female preference drives variation among host tree preference and beetle performance. The severity of the A. glabripennis infestation within trees was an inconsistent predictor of the age of an infestation, which is a key assumption used in landscape scale models of A. glabripennis dispersal. However, overall differences between predicted A. glabripennis movement and behavior were similar to that predicted from current risk models, supporting the utility of the landscape scale reconstructions currently used to model A. glabripennis spread and risk.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":"55 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148028010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}