Journal of economic entomology最新文献

{"title":"A bioeconomic analysis of objective-based management options for late-stage emerald ash borer (Coleoptera: Buprestidae) infestations.","authors":"Alexander J F Martin, Lukas G Olson, Amory Ngan, Tenley M Conway","doi":"10.1093/jee/toaf037","DOIUrl":"https://doi.org/10.1093/jee/toaf037","url":null,"abstract":"<p><p>Following its North American introduction, the emerald ash borer (Agrilus planipennis Fairmaire) (Coleoptera: Buprestidae) (EAB) has devastated ash populations (Fraxinus Linnaeus) (Oleaceae), largely extirpating the genus from infested regions. Previous cost-benefit analyses of EAB management options, including insecticidal injections, preemptive removals, and replanting, have examined early-stage infestations. This study tests options for late-stage EAB management based on ecological and economic objectives. We parameterized management decisions to evaluate tree counts, basal area, and urban forest value under 7 management options, varying if and when ash trees were injected, removed, and replanted with non-ash species. The simulation is applied to the remaining ash population in Mississauga, Ontario where tree coring and annual assessments determined that injected trees have reduced growth rates and are declining in condition. The results demonstrate that injections help preserve the ash population, maximize basal area, minimize spikes in annual costs, and reduce cumulative costs earlier in the 20-yr study period. However, long-term cost reduction is achieved through ceasing injections and removing ash as they die from EAB. Maintaining tree counts and maximizing net value is achieved through proactive replanting and winding down basal injections, coupled with a slow rate of removal, ultimately bringing the SLow Ash Mortality approach to a close.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atypical pathogenesis of DsCPV-1 in candidate for mass production Manduca sexta (Lepidoptera: Sphingidae).","authors":"Anna O Subbotina, Vyacheslav V Martemyanov, Irina A Belousova","doi":"10.1093/jee/toaf047","DOIUrl":"https://doi.org/10.1093/jee/toaf047","url":null,"abstract":"<p><p>Recently obtained cypovirus strain DsCPV-1 shows potential as a biological insecticide, with its alternative host Manduca sexta (L.) being a promising producer. We confirmed DsCPV-1 replication in M. sexta by quantitative PCR, validating DsCPV-1's suitability as a biological producer. At the terminal infection stage, we revealed many nonoccluded DsCPV-1 virions by transmission electron microscopy, indicating virus replication with reduced or without polyhedron formation in this alternative host.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preventative medicine? Examining prophylactic effects of a sunflower pollen diet in Bombus impatiens ([Hymenoptera]: [Apidae]).","authors":"Cameron C Lamphere, Elyse C McCormick, Lynn S Adler","doi":"10.1093/jee/toaf051","DOIUrl":"https://doi.org/10.1093/jee/toaf051","url":null,"abstract":"<p><p>Widespread decline of pollinator populations is of concern for both natural and agricultural ecosystems. Pathogens have been identified as a major contributor to the decline of some bee species, making understanding host-pathogen dynamics a crucial area of research. Sunflower pollen (Helianthus annuus L.; Asterales: Asteraceae) dramatically and consistently reduces infection by a prevalent gut pathogen, Crithidia bombi Lipa & Triggiani 1988 (Kinetoplastida: Trypanosomatidae), in the common eastern bumble bee (Bombus impatiens Cresson 1863; Hymenoptera: Apidae), when consumed by bees post-infection, but we do not know if sunflower can confer protection when consumed before exposure. We asked whether feeding bumble bees sunflower pollen diets prior to pathogen exposure decreases Crithidia infection compared to buckwheat pollen (Fagopyrum esculentum Moench; Polygonales: Polygonaceae). Buckwheat pollen was used as a comparison since it has a similar protein concentration as sunflower pollen, but results in higher Crithidia counts more comparable to typical wildflower pollen when consumed post-infection. Bumble bees were fed sunflower or buckwheat pollen for 7 d, inoculated with Crithidia, and then fed a wildflower pollen control diet for seven more days before assessing infection. We found that consuming a sunflower pollen diet before inoculation did not reduce Crithidia cell counts compared to buckwheat pollen. Furthermore, bumble bee survival and consumption of sucrose solution and pollen did not differ between these diets. The results show no evidence of sunflower pollen providing prophylactic resistance against Crithidia bombi infection, indicating that the timing at which sunflower pollen is consumed relative to exposure has important consequences for infection.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143775250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predatory mites Amblydromalus limonicus and Amblyseius herbicolus (Acari: Phytoseiidae) as potential biocontrol agents of Eotetranychus sexmaculatus (Acari: Tetranychidae) in avocado: examining predation on different prey life stages.","authors":"Yuhao Yang, Keshi Zhang, Zhi-Qiang Zhang","doi":"10.1093/jee/toaf036","DOIUrl":"https://doi.org/10.1093/jee/toaf036","url":null,"abstract":"<p><p>The six-spotted spider mite, Eotetranychus sexmaculatus (Riley) (Acari: Tetranychidae), is a severe pest of avocado trees, causing excessive leaf drop and reduced yield. Two predators found to be sympatric with E. sexmaculatus in surveys, Amblydromalus limonicus (Garman & McGregor) and Amblyseius herbicolus (Chant) (Acari: Phytoseiidae), may serve as potential biological control agents. We examined their potential in 2 laboratory experiments. (i) In no-choice tests, each predator was presented with 40 eggs, 40 larvae, 40 nymphs, or 20 female adults of E. sexmaculatus, and predation and oviposition rates (per day) were measured. (ii) In choice tests, predators were given a mixture of 10 eggs, 10 larvae, 10 nymphs, and 10 female adults, and the same parameters were measured, but with prey stage preference also assessed using Manly's preference index. Our results showed both A. limonicus and A. herbicolus fed and reproduced on all stages of E. sexmaculatus. Significantly higher predation rates were observed for A. limonicus on E. sexmaculatus than A. herbicolus. Both predator species preferred earlier life stages of E. sexmaculatus, with the preference more pronounced in A. herbicolus than in A. limonicus. In both choice and no-choice experiments, the oviposition rate (one criterion for determining whether artificially released biological control agents can use the nutrients of the new prey to reproduce) was higher in A. limonicus than A. herbicolus. This study is the first to report on the biological control potential of these two predatory mite species for use against E. sexmaculatus in avocado plantations.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trap catches of woodboring beetles and predators affected by release rates of cerambycid pheromones.","authors":"Daniel R Miller, Jon D Sweeney","doi":"10.1093/jee/toaf070","DOIUrl":"https://doi.org/10.1093/jee/toaf070","url":null,"abstract":"<p><p>Detection programs for nonnative species of woodboring beetles require effective and affordable traps and lures. 3-Hydroxyhexan-2-one, 3-hydroxyoctan-2-one, and syn-2,3-hexanediol are 3 semiochemicals that are broadly attractive to longhorn beetles, and associated species of ambrosia beetles and predators. We determined the dose responses of insects to traps baited with ethanol and various combinations of these pheromones released at high rates versus low or medium rates. Five species of longhorn beetles exhibited positive dose-dependent responses with trap catches increasing with increased release rates. In contrast, 2 species of longhorn beetles exhibited a negative dose-dependent response to these pheromones. Curius dentatus Newman and Euderces pini Olivier (Coleoptera: Cerambycidae) were unaffected by release rates. Similar response patterns were observed with some species of ambrosia beetles (Coleoptera: Curculionidae), a powderpost beetle (Coleoptera: Bostrichidae), 3 predator species (Coleoptera: Carabidae, Cleridae, Trogossitidae), and an assassin bug (Hemiptera: Reduviidae). The reasons for these responses are unclear. However, the variation in dose-dependent responses by beetles may be important in optimizing the efficiency of detection programs with respect to lure costs and numbers of traps that should be deployed.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional response of the native natural enemy of Dryinus sinicus (Hymenoptera: Dryinidae) to different instars of spotted lanternfly (Lycorma delicatula, Hemiptera: Fulgoridae).","authors":"Yutong Zhuang, Kexin Bao, Xiaoyi Wang","doi":"10.1093/jee/toaf061","DOIUrl":"https://doi.org/10.1093/jee/toaf061","url":null,"abstract":"<p><p>Dryinus sinicus Olmi (Hymenoptera: Dryinidae) is a key natural enemy of the nymphs of spotted lanternfly, Lycorma delicatula White (Hemiptera: Fulgoridae), a significant pest in agricultural and forest ecosystems. This study investigates the functional response of female D. sinicus to the first-, second-, and third-instar nymphs of L. delicatula, as well as the intraspecific competition within D. sinicus populations. D. sinicus responded to the increasing prey density of L. delicatula nymphs of different instars by consuming more number of prey than prey consumed at lower prey densities and exhibited Holling's type II curvilinear responses. However, search efficiency decreases with increasing prey density. The predation effect of D. sinicus on the first-instar L. delicatula nymphs was the best, the attack rate per handling time (a'/Th) was 14.9712 and an individual female wasp's attack rate (a') was 1.0091, the handling time (Th) to 1 instar L. delicatula nymphs was 0.0674 and the maximum theoretical rate of prey consumed per 24 h (T/Th) was 14.8368. The intensity of the scrambling competition increasing with increases predator density, but the capita prey consumed level and per capital predation efficiency decreased significantly when the predator density ranged from 1 to 5. The results indicate that intraspecific interference occurs when multiple females of D. sinicus prey on L. delicatula in the same area. Overall, this study demonstrates that D. sinicus is an effective biological control agent for L. delicatula, with significant potential for further development in the management of this pest.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity and genetic differentiation pattern of an endoparasitoid parasitizing the invasive gall midge across China.","authors":"Li Wang, Lan Huang, Xiang-Chen Cheng, Xiu-Hong Ma, Jun Yang, Wen-Xia Huai, Ruo-Zhu Lin, Heng-Yue Zhang, Yan-Xia Yao","doi":"10.1093/jee/toaf060","DOIUrl":"https://doi.org/10.1093/jee/toaf060","url":null,"abstract":"<p><p>Platygaster robiniae Buhl & Duso (Hymenoptera: Platygastridae) is an important parasitoid of the black locust gall midge Obolodiplosis robiniae (Haldeman) (Diptera: Cecidomyiidae), an invasive pest that has spread from its native range in North America to Europe and Asia in recent decades. As the dominant natural enemy of O. robiniae in both its native and introduced regions, P. robiniae plays a notable role in the biocontrol of the invasive pest. Understanding the population genetic structure and historical dynamics of P. robiniae is important for gaining valuable insights into the interactions between the parasitoid and invasive species of O. robiniae. However, these aspects remain poorly understood. In this study, we analyzed the genetic variation and historical dynamics of 22 P. robiniae populations across China using mitochondrial cytochrome oxidase subunit I (COI) gene sequences. Our results revealed a high level of genetic diversity and significant genetic differentiation. P. robiniae populations represented relatively abundant haplotypes (59 haplotypes) and phylogenic relationships showed that all populations clustered into 2 clades. Demographic analyses suggested that P. robiniae populations in China have undergone a recent population expansion. These findings provided valuable genetic insights into P. robiniae and contributed to a better understanding of the evolutionary dynamics of an endoparasitoid associated with an invasive gall midge in newly colonized regions.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brassica rapa treatments with methyl salicylate enhance foraging capacity of generalist natural enemies in a concentration-dependent manner.","authors":"Bilal Ahmad, Jamin Ali, Aleena Alam, Sohail Abbas, Jing Xuan Huang, Jianye Zhao, Muhammad Ameer Hamza, Azhar Ali, Khalid Ali Khan, Hamed A Ghramh, Adil Tonğa, Qianfu Su, Li Qiyun, Rizhao Chen","doi":"10.1093/jee/toaf043","DOIUrl":"https://doi.org/10.1093/jee/toaf043","url":null,"abstract":"<p><p>The aphid Myzus persicae Sulzer (Hemiptera: Aphididae) causes significant crop damage by feeding on plant tissues, transmitting viruses, and reducing agricultural productivity. Challenges associated with chemical control methods, such as the development of pest resistance and adverse environmental impacts, highlight the need to enhance the efficacy of natural enemies for sustainable pest management. Methyl salicylate (MeSA) has been extensively studied in pest management using baited traps and slow-release packets; however, its role in enhancing natural enemy behavior through induced plant defenses remains underexplored. This study examines the effect of MeSA applied to Brassica rapa (Brassicales: Brassicaceae) on the behavior and performance of 2 key biocontrol agents, Harmonia axyridis Pallas (Coleoptera: Coccinellidae) and Aphidius gifuensis Ashmead (Hymenoptera: Braconidae). We hypothesized that MeSA enhances the attraction of natural enemies in a concentration-dependent manner. To test this, 4 MeSA concentrations (25, 50, 75, and 100 mg/L) were applied, with control plants treated using deionized water. Bioassays were then conducted to evaluate predator preferences, parasitism rates, foraging behavior, and behavioral responses in the olfactometer. Results showed that MeSA-treated plants significantly attract natural enemies, with pronounced effects at higher concentrations. Specifically, MeSA increased parasitism rates, improved predator foraging efficiency, and heightened predator preference for treated plants. This study demonstrates the potential of MeSA in enhancing biological control strategies against M. persicae by improving the efficacy of natural enemies. The findings highlight the potential of applying MeSA treatment to enhance the recruitment of biological control agents by inducing plant defenses, offering a sustainable approach to reducing aphid infestations in pest management programs.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxicity and horizontal transfer of chitin synthesis inhibitors in the western drywood termite (Blattodea: Kalotermitidae).","authors":"Nicholas A Poulos, Chow-Yang Lee, Michael K Rust, Dong-Hwan Choe","doi":"10.1093/jee/toaf064","DOIUrl":"https://doi.org/10.1093/jee/toaf064","url":null,"abstract":"<p><p>Three chitin synthesis inhibitors (CSIs), bistrifluron, chlorfluazuron, and noviflumuron, were evaluated for their toxicity and horizontal transfer against the western drywood termite, Incisitermes minor (Hagen), when used to treat wood. In a no-choice bioassay, bistrifluron provided significantly faster kill than chlorfluazuron or noviflumuron treatments at 0.1 and 0.5% (wt/wt) rates over a 60-d period, providing 99% mortality. In a choice bioassay using 0.1% rate, bistrifluron provided a significantly faster kill than chlorfluazuron or noviflumuron treatments over a 60-d period, resulting in 96% mortality. In a transfer bioassay, a group of bistrifluron-fed termites, donors (D), was placed with a group of unexposed nestmates, recipients (R). Based on the visual marking, the food material of the donor termites was readily transferred to the recipients within 24 to 48 h. Overall, survival curves were similar between 1:19 (5% donor) and 10:10 (50% donor) D:R ratios, resulting in 100% mortality by day 90. This result indicated that lethal doses of bistrifluron were retained and effectively transferred, even from limited numbers of termites that originally ingested the compound. Implications for drywood termite management and future development are discussed.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143665715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Are fitness costs associated with insecticide resistance? A meta-analysis.","authors":"Dylan J Brown, Richard A Redak","doi":"10.1093/jee/toaf062","DOIUrl":"https://doi.org/10.1093/jee/toaf062","url":null,"abstract":"<p><p>Insecticide resistance threatens control of agricultural and medically important insect pests. Resistance may come at a fitness cost to the insect pest, and whether these fitness costs exist may determine the persistence of resistance in the absence of insecticides. Not all resistant populations have shown fitness costs associated with resistance. Revealing possible patterns in the effects of insecticide resistance on fitness costs among insecticide classes, resistance levels, and insect orders would improve our understanding of evolutionary costs of resistance and may assist in optimizing existing resistance management strategies. We performed a comprehensive literature search to identify studies that examined fitness costs associated with insecticide resistance. Fitness data were collected on various life-history traits and subjected to multiple meta-analyses to determine overall effects of resistance. Generally, insecticide resistance often came with a cost to fitness; however, there were insecticide classes, orders of insects, and resistance magnitude levels that did not confer a fitness cost. The emerging patterns suggest that (i) resistant female insects exhibited a lower fecundity compared to susceptible females within the orders Diptera, Hemiptera, and Lepidoptera; (ii) resistant juvenile insects had prolonged development compared to susceptible juveniles within the orders Diptera, Hemiptera, and Lepidoptera; (iii) juvenile survival rate was much higher for susceptible than resistant individuals in the orders Lepidoptera, Diptera, and Hemiptera; (iv) female and male adult longevity were reduced for insecticide resistant individuals in the order Diptera, and (v) there was no clear and consistent trend between the magnitude of resistance and potential effects on fitness.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}