Journal of economic entomology最新文献_第3页

Ecological niche comparisons of 3 polyphagous fruit fly (Diptera: Tephritidae) species using ensemble models with soil variables. 基于土壤变量集合模型的3种多食果蝇（双翅目：蝗科）生态位比较

Journal of economic entomology Pub Date : 2025-07-04 DOI: 10.1093/jee/toaf143

Jiayao He, Peishan Sun, Cong Wang, Fan Jiang, Xubin Pan, Ke Chen

{"title":"Ecological niche comparisons of 3 polyphagous fruit fly (Diptera: Tephritidae) species using ensemble models with soil variables.","authors":"Jiayao He, Peishan Sun, Cong Wang, Fan Jiang, Xubin Pan, Ke Chen","doi":"10.1093/jee/toaf143","DOIUrl":"https://doi.org/10.1093/jee/toaf143","url":null,"abstract":"Invasive polyphagous fruit fly (Diptera: Tephritidae) species, including Zeugodacus cucurbitae (Coquillett), Zeugodacus tau (Walker), and Bactrocera zonata (Saunders), pose significant threats to agricultural and food security, particularly in Southeast Asia. This study aims to develop and evaluate species distribution models to predict the potential distribution of the 3 tephritid species based on climatic, soil, and topographic factors. Individual models and ensemble models were employed and tested to identify suitable areas across the region. The study also assesses the ecological niches of the 3 species across key environmental gradients. Our findings highlight that soil factors, often overlooked in predictive modeling, play a critical role in shaping their distributions and improving model prediction accuracy. The outperformance of ensemble models is further demonstrated among different modeling algorithms. The results provide valuable insights into the ecological niches of these invasive fruit fly species, and underscore the necessary of incorporating soil factors in model predictions, to improve invasive risk assessments and inform biosecurity measures.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562437","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}

引用次数: 0

Effect of sublethal treatments of imidacloprid against Aromia bungii on its parasitoid, Sclerodermus guani. 吡虫啉亚致死处理对白僵虫拟寄生虫瓜硬皮虫的影响。

Journal of economic entomology Pub Date : 2025-07-04 DOI: 10.1093/jee/toaf164

Shuang Li, Yu-Jun Kong, Zuo-Xiang Sun, Xin-Yi Peng, Jia Li, Dan-Dan Cao, Jian-Rong Wei

{"title":"Effect of sublethal treatments of imidacloprid against Aromia bungii on its parasitoid, Sclerodermus guani.","authors":"Shuang Li, Yu-Jun Kong, Zuo-Xiang Sun, Xin-Yi Peng, Jia Li, Dan-Dan Cao, Jian-Rong Wei","doi":"10.1093/jee/toaf164","DOIUrl":"https://doi.org/10.1093/jee/toaf164","url":null,"abstract":"This study aimed to determine whether sublethal doses of imidacloprid affect physiological and biochemical responses in Aromia bungii larvae that influence parasitism and offspring development of its parasitoids Sclerodermus guani. We first determined appropriate sublethal doses of imidacloprid against A. bungii by bioassay, then quantified feeding and biomass of A. bungii larvae with an artificial diet treated with sublethal doses of imidacloprid, and the activity of detoxification and defense enzymes in treated larvae. Subsequently, we determined how larvae fed with sublethal doses of imidacloprid affected the performance of S. guani. Results showed that sublethal doses of imidacloprid significantly decreased the feeding and biomass of A. bungii larvae, induced activity of the detoxifying enzyme GST, and inhibited the activity of another detoxifying enzyme CarE; the activity of antioxidant enzymes CAT, SOD, and POD were also induced and the effect was dose-dependent; total mortality of A. bungii larvae and developmental duration of S. guani offspring were not significantly affected, but compared with the control, the reproductive mortality rate of A. bungii decreased by 64.84%, 83.52%, and 100%, respectively at 0.5 mg/kg, 1 mg/kg, and 5 mg/kg; the egg production of S. guani female decreased by 46.21%, 53.87%, and 69.08%, respectively, and the emergence rate decreased by 46.10%, 43.89%, and 100%, respectively; the sex ratio (female:male) of S. guani offspring was also decreased. Sublethal doses of imidacloprid had a significant impact on S. guani via induction of strong physiological and biochemical responses in the larval body of A. bungii.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562438","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}

引用次数: 0

Can low-risk insecticides negatively affect the generalist predator Orius insidiosus (Hemiptera: Anthocoridae)? 低风险杀虫剂是否会对多面手捕食者隐蝽（半翅目：蚁科）产生负面影响？

Journal of economic entomology Pub Date : 2025-07-03 DOI: 10.1093/jee/toaf163

Yuna Gaire, Kaushalya G Amarasekare

{"title":"Can low-risk insecticides negatively affect the generalist predator Orius insidiosus (Hemiptera: Anthocoridae)?","authors":"Yuna Gaire, Kaushalya G Amarasekare","doi":"10.1093/jee/toaf163","DOIUrl":"https://doi.org/10.1093/jee/toaf163","url":null,"abstract":"Many insecticides can disrupt key natural enemies, such as Orius insidiosus Say, resulting in arthropod pest outbreaks and/or resurgences of minor and major pests. Some of these insecticides used to control pest arthropods can be lethal or have sublethal effects on natural enemies through direct contact, residual exposure, or ingestion, thereby reducing the natural enemy's ability to provide biocontrol and ecosystem services and making them less effective in inundated releases. Thus, further studies are needed to determine the negative effects of reduced-risk insecticides with low mammalian toxicity and less environmental impact on important natural enemies. Our objective was to evaluate the lethal and sublethal effects of two low-risk insecticides in the reduced-risk category, horticultural oil, and insecticidal soap, on eggs, nymphs, and adults of O. insidiosus. These are common insecticides used in arthropod pest management in conventional and/or organic crop production due to their effectiveness and low mammalian toxicity. We assessed the survival and developmental time of immatures (eggs and nymphs) and fecundity, fertility, and longevity of adults (males and females), and viability of eggs when exposed to the prepared treatments using the high label rate recommended for vegetable crops (high rate) and 10% of the high label rate (low rate) of horticultural oil and insecticidal soap and the distilled water control in the laboratory through contact, ingestion, and residual exposures. Our results show some negative lethal and sublethal effects of horticultural oil and insecticidal soap on the life history parameters of O. insidiosus.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562436","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}

引用次数: 0

Biological and genomic characterization of a novel gammabaculovirus for biocontrol of Diprion infuscalae (Hymenoptera: Diprionidae). 一种新型伽玛针孔病毒的生物学和基因组学特征及其防治蜜蜂双翅虫（膜翅目：双翅虫科）。

Journal of economic entomology Pub Date : 2025-07-03 DOI: 10.1093/jee/toaf159

Qinghua Wang, Yanli Duan, Enjie Li, Xuguo Zhou

{"title":"Biological and genomic characterization of a novel gammabaculovirus for biocontrol of Diprion infuscalae (Hymenoptera: Diprionidae).","authors":"Qinghua Wang, Yanli Duan, Enjie Li, Xuguo Zhou","doi":"10.1093/jee/toaf159","DOIUrl":"https://doi.org/10.1093/jee/toaf159","url":null,"abstract":"Diprion infuscalae Wang & Wei, an emerging sawfly pest of the Chinese red pine, Pinus massoniana, is currently endemic to Jiangxi and Fujian provinces within the mainland China. To mitigate its infestation and to reduce our reliance on chemical pesticides, a naturally occurring nucleopolyhedrovirus (DiinNPV), was isolated from the deceased D. infuscalae larvae. Bioassays confirmed its high virulence against D. infuscalae under laboratory conditions. DiinNPV was then characterized morphologically using electron microscopy and genetically through the whole-genome sequencing. Its occlusion bodies consist of irregularly shaped polyhedra, which contain multiple enveloped, rod-shaped virions, each with a single nucleocapsid. The 77,381 bp genome, with a 33.9% G + C content, is the smallest among baculoviruses. It encodes 83 open reading frames, including 38 core, 8 lepidopteran, 34 hymenopteran, and 3 DiinNPV specific baculovirus genes, along with 2 direct repeats and 4 homologous repeats. Phylogenetic analyses and Kimura-2-parameter distances identify DiinNPV as a novel gammabaculovirus, provisionally named Gammabaculovirus diprinfuscalae. Gene parity plot and Mauve analyses exhibit high collinearity with other gammabaculoviruses and highlight nonsyntenic regions with inversions and rearrangements between orf2 and orf30 in comparison to 2 other hymenopteran baculovirus, NeleNPV and NeabNPV. Our toxicity assays, together with morphological and genomic characterization, provide strong evidence for DiinNPV's potential as a biocontrol agent and support its integration into integrated pest management strategies against D. infuscalae.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562435","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}

引用次数: 0

Resistance levels of Brazilian populations of Brevipalpus yothersi (Acari: Tenuipalpidae) to hexythiazox: monitoring and population performance. 巴西黄纹短肢蜱种群对噻虫唑的抗性水平：监测和种群表现。

Journal of economic entomology Pub Date : 2025-07-03 DOI: 10.1093/jee/toaf165

Hector Alonso Escobar-Garcia, Daniel Júnior de Andrade

{"title":"Resistance levels of Brazilian populations of Brevipalpus yothersi (Acari: Tenuipalpidae) to hexythiazox: monitoring and population performance.","authors":"Hector Alonso Escobar-Garcia, Daniel Júnior de Andrade","doi":"10.1093/jee/toaf165","DOIUrl":"https://doi.org/10.1093/jee/toaf165","url":null,"abstract":"The citrus leprosis mite (CLM), Brevipalpus yothersi Baker (Acari: Tenuipalpidae), is an important mite pest in Brazilian citrus orchards, with control mainly dependent on synthetic acaricides. However, frequent applications can lead to resistance development, compromising long-term efficacy. The objective of this study was to estimate resistance levels to the acaricide hexythiazox in different CLM populations from Brazil's citrus belt and evaluate potential fitness costs associated with resistance. Populations were collected from commercial sweet orange orchards, and direct-contact bioassays were conducted by exposing eggs to hexythiazox for 10 d to determine resistance levels, based on resistance ratios (RRs) estimated at LC50 and LC95. Additionally, biological parameters were evaluated, including egg incubation period, duration of developmental stages, preoviposition period, and demographic parameters (R₀, rm, T, and Dt). Populations showed resistance levels ranging from low to very high, with LC50 RRs between 0.33- and 17.15-folds and LC95 between 0.41- and 643.38-folds. The resistant population exhibited a significantly longer egg incubation and deutochrysalis period, while deutonymph duration and preoviposition period were significantly shorter. No significant differences in demographic parameters were observed between the resistant and susceptible population. Overall, hexythiazox resistance remains low in most populations, with only one showing moderate resistance based on RR50, which may be associated with higher selection pressure from hexythiazox. To preserve the efficacy of hexythiazox and ensure continued control of CLM in Brazil's citrus belt, rotation of synthetic acaricides with different modes of action is recommended.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562440","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}

引用次数: 0

Short photoperiod facilitates seasonal migration in Spodoptera frugiperda (Lepidoptera: Noctuidae). 短的光周期有利于夜蛾类夜蛾的季节性迁徙。

Journal of economic entomology Pub Date : 2025-07-03 DOI: 10.1093/jee/toaf160

Weixiang Lv, Linghe Meng, Xingfu Jiang, Dianjie Xie, Ping Li, Yunxia Cheng, Jason W Chapman, Lei Zhang

{"title":"Short photoperiod facilitates seasonal migration in Spodoptera frugiperda (Lepidoptera: Noctuidae).","authors":"Weixiang Lv, Linghe Meng, Xingfu Jiang, Dianjie Xie, Ping Li, Yunxia Cheng, Jason W Chapman, Lei Zhang","doi":"10.1093/jee/toaf160","DOIUrl":"https://doi.org/10.1093/jee/toaf160","url":null,"abstract":"The fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera: Noctuidae), is an important invasive migratory pest that poses a serious threat to global food security. However, behavioral and physiological responses to seasonal changes in photoperiod have received little attention in FAW. Here, we present behavioral evidence that FAW under shorter photoperiods (12L:12D and 10L:14D) exhibited stronger flight capacity and pathogen resistance to Beauveria bassiana compared to those under longer photoperiods (16L:8D and 14L:10D), but weaker reproductive performance. After prolonged flight, shorter photoperiods facilitated the reproduction of flying females compared to the controls (nonflying moths), while longer photoperiods suppressed reproduction. Short photoperiod reduced larval mortality and pupal weight of FAW but increased adult emergence rate. Our results indicate that shorter photoperiods enhance the migration propensity for improved survival in FAW, and provide insights into how photoperiod controls seasonal changes in behavior and physiology that lead to seasonal adaptation in this globally important pest.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562441","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}

引用次数: 0

Impact of white goosefoot, sunflower, wheat, and soybean on the developmental and fecundity performance of the beet webworm, Loxostege sticticalis (Lepidoptera: Pyralidae). 白鹅足、向日葵、小麦和大豆对甜菜网虫发育和繁殖力的影响

Journal of economic entomology Pub Date : 2025-07-03 DOI: 10.1093/jee/toaf156

Yi Yan, Tongqiang Zhang, Weixiang Lv, Dianjie Xie, Yijie Qiao, Xiaolong Zhang, En Wu, Liwei Xing, Xingfu Jiang, Lei Zhang

{"title":"Impact of white goosefoot, sunflower, wheat, and soybean on the developmental and fecundity performance of the beet webworm, Loxostege sticticalis (Lepidoptera: Pyralidae).","authors":"Yi Yan, Tongqiang Zhang, Weixiang Lv, Dianjie Xie, Yijie Qiao, Xiaolong Zhang, En Wu, Liwei Xing, Xingfu Jiang, Lei Zhang","doi":"10.1093/jee/toaf156","DOIUrl":"https://doi.org/10.1093/jee/toaf156","url":null,"abstract":"The beet webworm Loxostege sticticalis (Lepidoptera: Pyralidae), is an invasive and polyphagous pest, posing a severe threat to food security, agriculture, and animal production. In this study, we examined the biological parameters of L. sticticalis on four host plants: white goosefoot, Chenopodium album (Caryophyllales: Amaranthaceae), sunflower, Helianthus annuus L (Asterales: Compositae), wheat, Triticum aestivum L (Poales: Poaceae), and soybean, Glycine max (L.) Merr. (Fabales: Fabales). Our research found that, compared with white goosefoot, sunflowers, and wheat significantly lengthened larval development time. Additionally, adults feeding on sunflowers, wheat, and soybeans exhibited reduced egg-laying and oviposition periods. After feeding on wheat, key population parameters of the insect, including net reproductive rate (R0), intrinsic growth rate (r), and mean generation time (T), declined markedly. However, parameters r and λ still indicated positive population growth. These findings demonstrate the impact of different host plants on the biology of L. sticticalis and highlight the potential risks to its survival and spread when feeding on various hosts. They provide valuable information for pest monitoring and the development of control strategies.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562439","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}

引用次数: 0

Toxicity assessment and transcriptomic analysis of Metarhizium rileyi (Hypocreales: Clavicipitaceae) against Spodoptera frugiperda (Lepidoptera: Noctuidae): identification of tyrosol as a key quorum sensing regulator of pathogenicity. 赖氏绿僵菌（Metarhizium rileyi）对果夜蛾（Spodoptera frugiperda）的毒力评估及转录组学分析：酪醇作为关键群体感应致病性调节剂的鉴定。

Journal of economic entomology Pub Date : 2025-07-02 DOI: 10.1093/jee/toaf144

Shouzhu Liu, Zhiyi Yuan, Xipeng Zhang, Xuanhui Hao, Xiuhao Guo, Jingjing Yang

{"title":"Toxicity assessment and transcriptomic analysis of Metarhizium rileyi (Hypocreales: Clavicipitaceae) against Spodoptera frugiperda (Lepidoptera: Noctuidae): identification of tyrosol as a key quorum sensing regulator of pathogenicity.","authors":"Shouzhu Liu, Zhiyi Yuan, Xipeng Zhang, Xuanhui Hao, Xiuhao Guo, Jingjing Yang","doi":"10.1093/jee/toaf144","DOIUrl":"https://doi.org/10.1093/jee/toaf144","url":null,"abstract":"The fall armyworm, Spodoptera frugiperda, a severe crop pest, gained significant attention following its invasion of China in 2019. This study aimed to investigate the virulence and in vivo pathogenic transition of Metarhizium rileyi on S. frugiperda to understand biological control strategies. Using the immersion method, M. rileyi exhibited higher lethality toward third-instar larvae compared to fourth-instar larvae, with LC50 values of 3.15 × 107 conidia/ml and 1.04 × 108 conidia/ml, respectively. Microscopic observations revealed that M. rileyi initially existed as a yeast-like nonpathogenic form within the host but later transformed into a mycelial-like pathogenic form to effectively kill the host insect. De novo transcriptome analysis identified 89,498 unigenes. KEGG analysis highlighted genes associated with \"metabolic pathways\" and \"quorum sensing.\" Differentially expressed gene (DEG) analysis identified 2,988 DEGs during the morphological transformation of M. rileyi, with increased tyrosine levels due to 13 down-regulated genes in the \"biosynthesis of various plant secondary metabolites\" pathway. DAHP synthase, an up-regulated enzyme from the quorum sensing pathway, also facilitated tyrosine biosynthesis. Given tyrosine's role as a precursor to tyrosol, we hypothesized tyrosol served as quorum sensing molecule regulating the pathogenic switch of M. rileyi. The hypothesis was validated in vitro, confirming 1000 mg/L as the effective inducible concentration.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556267","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}

引用次数: 0

Compatibility of entomopathogenic nematodes and parasitoids of Drosophila suzukii Matsumura. 铃木松村果蝇昆虫病原线虫与拟寄生物的相容性。

Journal of economic entomology Pub Date : 2025-07-02 DOI: 10.1093/jee/toaf153

Jana C Lee, Isabel Lee-Park, Megan Carter, Kent M Daane, Flávio R M Garcia, Philip Fanning, Amanda K Hodson, Eric Janasov, Cera Jones, Arden R Lambert, Oscar E Liburd, Ashfaq A Sial, Frank G Zalom

{"title":"Compatibility of entomopathogenic nematodes and parasitoids of Drosophila suzukii Matsumura.","authors":"Jana C Lee, Isabel Lee-Park, Megan Carter, Kent M Daane, Flávio R M Garcia, Philip Fanning, Amanda K Hodson, Eric Janasov, Cera Jones, Arden R Lambert, Oscar E Liburd, Ashfaq A Sial, Frank G Zalom","doi":"10.1093/jee/toaf153","DOIUrl":"https://doi.org/10.1093/jee/toaf153","url":null,"abstract":"Numerous natural enemies have been investigated to suppress spotted-wing drosophila, Drosophila suzukii, a pest of small fruits and cherries. Current efforts include widespread releases of an imported figitid parasitoid, Ganaspis kimorum, conserving resident pupal parasitoids and an adventive figitid, Leptopilina japonica, and the application of entomopathogenic nematodes. However, the combined effectiveness of parasitoids and nematodes is relatively unknown. Five laboratory studies examined the combination of G. kimorum or L. japonica with the nematodes Steinernema carpocapsae or S. feltiae. The nematodes were applied to the substrate when wandering D. suzukii larvae were about to pupate. Results showed that the combination of parasitoids and nematodes led to higher pest suppression than either parasitoid or nematode only treatments, with an overall 56% to 83% reduction in D. suzukii emergence relative to the control. In 2 cases, the combination had similar effectiveness as the parasitoid-only treatment. The exposure of parasitized larvae to nematodes lowered parasitoid emergence by 26% to 68%. Two studies exposed pupae recently parasitized by the pupal parasitoids Pachycrepoideus vindemiae and Trichopria drosophilae to S. carpocapsae, and the exposure to nematodes lowered adult parasitoid emergence by 49% and 71%, respectively. Given the potential increase in overall pest control but negative impact on developing parasitoids, the decision to combine approaches may be based on whether the goal is to maximize biological control or to establish parasitoids.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556266","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}

引用次数: 0

Treating newly split Apis mellifera honey bee colonies with organic miticides-an opportunity for Integrated Pest Management of Varroa destructor mites (Mesostigmata: Varroidae). 用有机杀虫剂处理新分裂的蜜蜂群落——破坏瓦螨综合治理的机遇。

Journal of economic entomology Pub Date : 2025-07-01 DOI: 10.1093/jee/toaf126

Dan Aurell, Selina Bruckner, Todd D Steury, Geoffrey R Williams

{"title":"Treating newly split Apis mellifera honey bee colonies with organic miticides-an opportunity for Integrated Pest Management of Varroa destructor mites (Mesostigmata: Varroidae).","authors":"Dan Aurell, Selina Bruckner, Todd D Steury, Geoffrey R Williams","doi":"10.1093/jee/toaf126","DOIUrl":"https://doi.org/10.1093/jee/toaf126","url":null,"abstract":"Parasitism from Varroa mites (Varroa destructor Anderson and Trueman, Mesostigmata: Varroidae) is a major driver of honey bee colony losses (Apis mellifera L., Hymenoptera: Apidae). While synthetic miticides are valuable for Varroa management, high reliance on these compounds has selected for miticide-resistant Varroa populations. To enable more sustainable Varroa management and provide options when synthetic miticides such as amitraz fail, effective Integrated Pest Management (IPM) approaches are urgently needed. Here, we show that organic miticides (oxalic acid, \"OA\"; and hops beta acids) can achieve high efficacy against Varroa when strategically combined with a widely used cultural control (starting new colonies, \"splits,\" with queen cells). This common splitting practice acts as a cultural control by temporarily reducing the amount of brood (developing bees) in colonies. This forces Varroa mites out of the protected environment of brood cells and on to adult bees-where they can be more effectively targeted with miticides. Based on Varroa infestation rates of adult bees, we determined that the organic miticide treatments OA dribble (75.5% efficacy), 5× OA dribble (82.2%), and HopGuard (82.7%) were significantly more effective than no treatment and provided comparable efficacy to amitraz-based miticides. In contrast, OA vapor (44.3%) did not provide effective Varroa control. Based on observations of queen and colony success, colony strength measurements, and hive weights, none of the organic miticides showed signs of harming colonies. Therefore, this combination of cultural and chemical control provides an additional opportunity for beekeepers to implement IPM for more effective and sustainable Varroa management.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144546586","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}

引用次数: 0