Journal of economic entomology最新文献_第7页

A description of temperature-dependent development to infer Hyphantria cunea (Lepidoptera: Erebidae) and its application to predict the species voltinism in China. 中国棘球绦虫（鳞翅目：棘球绦虫科）的温度依赖发育描述及其在物种进化预测中的应用。

Journal of economic entomology Pub Date : 2025-05-19 DOI: 10.1093/jee/toaf099

WenXuan Xu, Zhuang Zuo, XuDong Zhao, HongTing Zhao, Fei Teng, DeJun Hao

{"title":"A description of temperature-dependent development to infer Hyphantria cunea (Lepidoptera: Erebidae) and its application to predict the species voltinism in China.","authors":"WenXuan Xu, Zhuang Zuo, XuDong Zhao, HongTing Zhao, Fei Teng, DeJun Hao","doi":"10.1093/jee/toaf099","DOIUrl":"https://doi.org/10.1093/jee/toaf099","url":null,"abstract":"The fall webworm, Hyphantria cunea (Drury) (Lepidoptera, Erebidae) is a significant forest pest, known for its strong reproductive capacity and wide host range. Temperature plays a crucial role in its growth and development, influencing population dynamics. Global warming may alter its distribution, development timing, and control measures. We selected six temperatures (16 °C, 19 °C, 22 °C, 25 °C, 28 °C, and 31 °C) for rearing H. cunea in artificial climate chambers and recorded the duration of each developmental stage. Seven developmental rate models were used to fit the developmental progression of H. cunea. The results showed that temperature significantly affected the development time of H. cunea, as increasing temperature accelerated development, especially in the range of 16 °C to 28 °C. At 31 °C, the effect of temperature on the rate of development began to lessen. The fitting results based on the Lactin model showed that the lower threshold temperature (TL) of the development of H. cunea was 10 °C; the upper threshold temperature (TH) was 33.01 °C, and the optimal temperature (Topt) was 31.87 °C. The most effective accumulated temperature for completing the life cycle was 791.2 degree days. The calculation of annual accumulated degree days over the past five years showed that H. cunea in China normally has three generations per year, with a few colder regions supporting two generations annually. In exceptionally hot years, there may be a completely fourth generation.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096610","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

Impacts of Nantucket pine tip moth, Rhyacionia frustrana (Lepidoptera: Tortricidae) management on rotation-length economic returns of loblolly pine. 楠塔基特松尖蛾管理对火炬松轮长经济效益的影响。

Journal of economic entomology Pub Date : 2025-05-19 DOI: 10.1093/jee/toaf072

David R Coyle, Rafael De La Torre, Jess A Hartshorn, Samantha M Kennett, R Scott Cameron, C Wayne Berisford

{"title":"Impacts of Nantucket pine tip moth, Rhyacionia frustrana (Lepidoptera: Tortricidae) management on rotation-length economic returns of loblolly pine.","authors":"David R Coyle, Rafael De La Torre, Jess A Hartshorn, Samantha M Kennett, R Scott Cameron, C Wayne Berisford","doi":"10.1093/jee/toaf072","DOIUrl":"https://doi.org/10.1093/jee/toaf072","url":null,"abstract":"The Nantucket pine tip moth, Rhyacionia frustrana, is primarily a pest of young pines (Pinus L.) in the southern United States and parts of Central America. Feeding damage can result in terminal mortality, stunted tree growth, and occasional tree death. Further, long-term impacts of Nantucket pine tip moth feeding can lead to persistent growth reductions throughout the entire harvest rotation; however, there is a dearth of new research on Nantucket pine tip moth-especially economic impacts-over the last several decades, and information is lacking regarding the economic impact of Nantucket pine tip moth damage over an entire stand rotation. To address this issue, we evaluated the economic impact of Nantucket pine tip moth feeding in a loblolly pine stand in North Carolina over a 23-yr harvest rotation. Our economic analysis suggested that under the right circumstances, Nantucket pine tip moth control could be economically worthwhile-but this would depend on several extrinsic factors, including site index, tree growth rate, market value of the products, and the cost of management activities. The need to manage Nantucket pine tip moth currently varies both spatially and temporally, and our data shows that this stochasticity will likely persist throughout the harvest rotation, and that Nantucket pine tip moth treatment should be carefully considered on a site-by-site basis.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144095902","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

Lethal and sublethal effects of cotton expressing single and pyramided proteins of Bacillus thuringiensis (Bt) on Helicoverpa armigera (Lepidoptera: Noctuidae), Spodoptera litura (Lepidoptera: Noctuidae), and Spodoptera frugiperda (Lepidoptera: Noctuidae). 表达苏云金芽孢杆菌单蛋白和锥体蛋白的棉花对棉铃虫、斜纹夜蛾和果纹夜蛾的致死和亚致死效应

Journal of economic entomology Pub Date : 2025-05-19 DOI: 10.1093/jee/toaf089

Sharna Holman, Paul Grundy, Helen Spafford, Michael Furlong

{"title":"Lethal and sublethal effects of cotton expressing single and pyramided proteins of Bacillus thuringiensis (Bt) on Helicoverpa armigera (Lepidoptera: Noctuidae), Spodoptera litura (Lepidoptera: Noctuidae), and Spodoptera frugiperda (Lepidoptera: Noctuidae).","authors":"Sharna Holman, Paul Grundy, Helen Spafford, Michael Furlong","doi":"10.1093/jee/toaf089","DOIUrl":"https://doi.org/10.1093/jee/toaf089","url":null,"abstract":"The susceptibility to proteins from Bacillus thuringiensis (Bt) can vary among lepidopteran pest species. While Bollgard 3 cotton (BG3) effectively controls the primary pest Helicoverpa armigera (Hübner) in Australia, its effectiveness against other pests, such as Spodoptera litura (Fabricius) and Spodoptera frugiperda (J. E. Smith), is unknown. This laboratory study assessed the survival and development of H. armigera, S. litura, and S. frugiperda larvae when fed foliage from a non-transgenic cotton variety (CC) and 3 transgenic cotton varieties: Bollgard (BG1) expressing Cry1Ac, Bollgard II (BG2) expressing Cry1Ac and Cry2Ab, and Bollgard 3 (BG3) expressing Cry1Ac, Cry2Ab, and Vip3A. Pyramided Bt cotton had greater negative effects on survival and development of all species compared with CC or BG1. The proportion of H. armigera that eclosed as adults was very low when larvae fed on BG2 or BG3 compared with BG1. Eclosion rates of S. litura and S. frugiperda on BG3 were much lower compared with BG2 and BG1. This study demonstrates that BG3 has greater efficacy against a wider lepidopteran pest complex compared with previous Bt cotton products. Despite efficacy in the laboratory, S. litura larvae are reported to be surviving in BG3 fields, suggesting other factors are influencing field efficacy. As BG3 production expands across tropical northern Australia, preserving the susceptibility of S. litura and S. frugiperda to BG3 proteins is crucial. This study identifies the need for further research on field survival and resistance management strategies for secondary pest species.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096152","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

Life table analyses and feeding behaviors of cannabis aphid, cotton aphid, and green peach aphid (Hemiptera: Aphididae) on industrial hemp. 大麻蚜、棉蚜和青桃蚜（半翅目：蚜科）对工业大麻的采食行为及生命表分析。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf004

Alex E Leede, Jeffrey A Davis

{"title":"Life table analyses and feeding behaviors of cannabis aphid, cotton aphid, and green peach aphid (Hemiptera: Aphididae) on industrial hemp.","authors":"Alex E Leede, Jeffrey A Davis","doi":"10.1093/jee/toaf004","DOIUrl":"10.1093/jee/toaf004","url":null,"abstract":"Industrial hemp, Cannabis sativa L., is an herbaceous annual plant that has recently re-entered crop production both in the field and in greenhouses within the United States. Like many agronomic crops, hemp production faces several insect pest challenges. Aphids pose a unique threat to hemp, being found in both indoor and outdoor production. Aphids affect hemp by reducing plant growth, bud production, concentrations of cannabinoids, and removing photosynthate. Additionally, aphids are vectors of plant viruses, and several species are known to transmit viruses to hemp. Limited research exists regarding the host suitability of hemp for common aphid pests in Louisiana. Thus, experiments were conducted to determine the life table statistics and feeding behaviors of Myzus persicae, Aphis gossypii, and Phorodon cannabis to determine the potential pest population dynamics of these pests on hemp. Hemp cv. Maverick was not a good host for either A. gossypii or M. persicae, resulting in negative intrinsic rates of increase and no sustained colonization. Although individuals of M. persicae and P. cannabis initiated probes at comparable rates, M. persicae probe durations were significantly shorter and probes were more frequent, indicating an absence of positive responses to probing hemp. A significant difference was observed in the percentage of individuals of A. gossypii initiating probes, and probe duration was significantly shorter than P. cannabis and significantly longer than M. persicae. Both A. gossypii and M. persicae spent significantly less time probing in phloem when compared with P. cannabis. These electrical penetration graph results indicate that A. gossypii and M. persicae do not find C. sativa cv. Maverick a suitable host; however, both species of aphids may still pose a threat to C. sativa production as virus vectors.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"707-712"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143019061","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

Effects of Metarhizium anisopliae on lethality, transfer, behavior, and physiology in Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae). 金龟子绿僵菌对褐蝽和布氏绿僵菌致死、转移、行为和生理的影响。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf007

Xuewen Sun, Chao Wen, Danhui Yang, Genzhuang Zhang, Bohan Zhang, Junbao Wen

{"title":"Effects of Metarhizium anisopliae on lethality, transfer, behavior, and physiology in Eucryptorrhynchus scrobiculatus and E. brandti (Coleoptera: Curculionidae).","authors":"Xuewen Sun, Chao Wen, Danhui Yang, Genzhuang Zhang, Bohan Zhang, Junbao Wen","doi":"10.1093/jee/toaf007","DOIUrl":"10.1093/jee/toaf007","url":null,"abstract":"Eucryptorrhynchus scrobiculatus (Motschulsky) and E. brandti (Harold) are 2 serious pests inflicting damage on Ailanthus altissima (Mill.) Swingle. In the field, these species exhibit aggregation behavior. We hypothesized that this behavior facilitated the contact and horizontal transfer of Metarhizium anisopliae (Metschn.) Sorokin in weevil species. Little or no mortality in both E. scrobiculatus and E. brandti adult individuals exposed to low concentrations M. anisopliae (1 × 105, 1 × 106 conidia/ml). A mortality rate of 100% was observed in both E. scrobiculatus and E. brandti adults after 3 and 5 d of treatment with M. anisopliae at concentrations of 1 × 109 and 1 × 108 conidia/ml. The aggregation behavior of E. scrobiculatus and E. brandti adults was unaffected by M. anisopliae. In the transfer test of M. anisopliae, the mortality rate of recipients mixed with donors treated with M. anisopliae conidia was significantly higher compared to untreated donors and control recipients in laboratory and field experiments. Furthermore, the mortality of secondary recipients in both E. scrobiculatus and E. brandti was significantly higher than that of the control group. The findings suggested that horizontal transfer of M. anisopliae occurred in both species, which was further supported by microscopy observation and the activity of immune-related enzymes in the donor, recipient, and secondary recipient. Our findings demonstrated a specific method for improving pest control by combining aggregation behavior with the use of biopesticides, thereby enhancing the understanding of biological management strategies.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"531-540"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143417116","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

Visual cues enhance effectiveness of pheromone-baited traps for the corn earworm moth, Helicoverpa zea (Lepidoptera: Noctuidae). 视觉提示可提高信息素诱捕玉米耳蛾（Helicoverpa zea）效果。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf024

Charles A Kwadha, Ahmed M Saveer, Ayako Wada-Katsumata, Dominic D Reisig, Gabriel P Hughes, Ring T Cardé, Coby Schal

{"title":"Visual cues enhance effectiveness of pheromone-baited traps for the corn earworm moth, Helicoverpa zea (Lepidoptera: Noctuidae).","authors":"Charles A Kwadha, Ahmed M Saveer, Ayako Wada-Katsumata, Dominic D Reisig, Gabriel P Hughes, Ring T Cardé, Coby Schal","doi":"10.1093/jee/toaf024","DOIUrl":"10.1093/jee/toaf024","url":null,"abstract":"Mate-finding and host localization by nocturnal moths are predominantly mediated by olfactory signals and cues, respectively. Nevertheless, some nocturnal moth species rely on olfactory and visual cues to locate resources, such as flowers. Although traps are indispensable for the detection and monitoring of corn earworm moths, Helicoverpa zea (Boddie), a generalist and highly destructive crop pest, the role of visual cues in locating a pheromone source is poorly understood. Here, we investigated whether trap color influences the trap catch of the corn earworm. We showed that trap design affected male H. zea trap catch, with Hartstack-type traps being more effective than bucket traps, and more H. zea males were trapped in light-colored traps (white, yellow). However, under the dim ambient night conditions, when H. zea males fly, it is unlikely that they can discern trap colors. Instead, it is probable that H. zea males discriminate traps on the basis of their gray-scale reflectance, ranging from white to black. We found a positive correlation between trap captures and the relative luminance of dyed cheesecloth fabrics that we wrapped around Hartstack traps. Our findings suggest that at night, H. zea integrates the visual contrast between the trap and foliage background (ie apparency of the trap) in locating sex pheromone-baited traps.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"662-671"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12034308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143416486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of alginate hydrogel baits for the management of longlegged ant (Hymenoptera: Formicidae). 海藻酸盐水凝胶诱捕长腿蚁（膜翅目：蚁科）的研制。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf011

Ching-Chen Lee, Ming-Yi Lu, Joanne Tzu-Chia Chen, Jia-Wei Tay, Chin-Cheng Scotty Yang, Chung-Chi Lin

{"title":"Development of alginate hydrogel baits for the management of longlegged ant (Hymenoptera: Formicidae).","authors":"Ching-Chen Lee, Ming-Yi Lu, Joanne Tzu-Chia Chen, Jia-Wei Tay, Chin-Cheng Scotty Yang, Chung-Chi Lin","doi":"10.1093/jee/toaf011","DOIUrl":"10.1093/jee/toaf011","url":null,"abstract":"The longlegged ant, Anoplolepis gracilipes, is a globally destructive invasive species owning to its devastating impacts on biodiversity and ecosystem functions in the regions where it has been introduced. In Taiwan, invasion of A. gracilipes has been associated with the declining of land crab populations in several hotspots. While liquid baiting program has been implemented in those areas, the operation is costly and labor-intensive since it typically requires the use and maintenance of bait stations. The goal of the current study was to evaluate the potential and effectiveness of hydrogel baits laced with borax as an alternative tool to control A. gracilipes. Laboratory studies demonstrated that hydrogel baits containing 3% borax achieved higher A. gracilipes mortality than those containing 2% and 1% borax. Specifically, hydrogel baits containing 3% borax resulted in >90% worker mortality within 21 d post-treatment (LT50 = 5.1 d), along with significant reduction in brood weight (>90%) and substantial queen death (>80% of colony fragments). Furthermore, field experiment indicated that A. gracilipes workers preferentially retrieved small-size hydrogel beads (3.1 mm OD; proportion removed = 1.00 ± 0.00) compared to the larger ones (6.2 mm OD; proportion removed = 0.03 ± 0.03), which will facilitate efficient transfer of toxicant within the colony and may minimize nontarget impact. In conclusion, alginate hydrogel baits with 3% borax appear to be a promising tool against A. gracilipes, although their field efficacy against large supercolonial populations remains to be investigated.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"838-845"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384426","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

Temperature-dependent parasitism, development, and reproduction of Microplitis manilae (Hymenoptera: Braconidae) on Spodoptera litura (Lepidoptera: Noctuidae). 马尼拉小蜂（膜翅目：小蜂科）对斜纹夜蛾（鳞翅目：夜蛾科）的温度依赖性寄生、发育和繁殖。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf019

Shuang Tian, Xue-Yuan Di, Bin Yan, Yuan-Chan Yu, Peng Ren, Hui-Zi Wu, Mao-Fa Yang

{"title":"Temperature-dependent parasitism, development, and reproduction of Microplitis manilae (Hymenoptera: Braconidae) on Spodoptera litura (Lepidoptera: Noctuidae).","authors":"Shuang Tian, Xue-Yuan Di, Bin Yan, Yuan-Chan Yu, Peng Ren, Hui-Zi Wu, Mao-Fa Yang","doi":"10.1093/jee/toaf019","DOIUrl":"10.1093/jee/toaf019","url":null,"abstract":"The braconid wasp Microplitis manilae (Hymenoptera: Braconidae) is a solitary, koinobiont endoparasitoid of young Spodoptera litura (Fabricius) larvae and one of its most crucial natural parasitic enemies. The establishment of a stable and sufficient population of M. manilae by rearing them in a laboratory is the cornerstone of field release management. However, when reared in a laboratory, M. manilae is affected by temperature. Here, we attempted to optimize the rearing temperature of M. manilae for parasitizing second-instar S. litura larvae by examining the effects of rearing at 5 temperatures: 16 °C, 20 °C, 24 °C, 28 °C, and 32 °C. Our results suggest that the development of the parasitoid progeny speeded up with shorter durations of the egg-larval, pupal, and preadult stages with the increase in temperature from 16°C to 32 °C. The parasitism rate and fecundity of M. manilae upon parasitizing second-instar S. litura larvae increased with rearing temperature from 16°C to 24 °C, with the peaks at 24 °C reaching 52.90% and 111.70 eggs/female, respectively, and then decreased at 28 °C to 32 °C. At 24 °C, the sex ratio (0.22) was the lowest, whereas the emergence rate (68.54%) did not differ significantly compared with those at other temperatures. Meanwhile, at 28 °C, the parasitism rate, fecundity, and emergence rate approached the levels at 24 °C, whereas the sex ratio was higher (0.29) than at 24 °C. These findings suggest 24 °C to 32 °C is the most appropriate temperature range for M. manilae mass rearing under laboratory conditions.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"561-567"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124310","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 hilling timing on soybean gall midge (Diptera: Cecidomyiidae) abundance, plant injury, and yield. 爬坡时间对大豆瘿蚊（双翅目：瘿蚊科）数量、植株伤害和产量的影响。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf020

Pragya Gupta, Anthony Justin McMechan

{"title":"Impact of hilling timing on soybean gall midge (Diptera: Cecidomyiidae) abundance, plant injury, and yield.","authors":"Pragya Gupta, Anthony Justin McMechan","doi":"10.1093/jee/toaf020","DOIUrl":"10.1093/jee/toaf020","url":null,"abstract":"In 2019, the soybean gall midge (Resseliella maxima Gagné) was identified as a new pest and species in the US Midwest, causing injury to soybean (Glycine max (L.) Merr.). Infestation of R. maxima in soybean starts with females laying eggs in the fissures or cracks that develop at the base of soybean at the V2 growth stage. These fissures can be found on soybean from the soil surface to the cotyledonary node. After eggs hatch, larvae feed inside the stem, leading to wilting and death of the plants. In 2021, hilling was tested as a cultural tactic at the V2 stage, where soil was placed at the base of stems covering the fissures, resulting in a reduction in soybean gall midge infestation. To better understand this cultural control practice, hilling was performed at different timings at different vegetative (V2, V5) and reproductive (R2) soybean growth stages during the 2022 and 2023 growing seasons. We hypothesized that a greater abundance of larvae and increased plant injury would occur with later hilling applications. The results showed that soybean hilled at V2 and V5 stages had a lower infestation and higher yields compared to hilling later. The results of this study demonstrate that hilling during vegetative growth stages can reduce R. maxima infestation and prevent yield loss.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"724-731"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12034311/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring insecticide resistance and target-site mutations in field populations of Spodoptera frugiperda (Lepidoptera: Noctuidae) in China. 中国夜蛾（鳞翅目：夜蛾科）田间种群杀虫剂抗性及靶点突变监测。

Journal of economic entomology Pub Date : 2025-04-26 DOI: 10.1093/jee/toaf031

Baojuan Zeng, Jianghao Ding, Yajuan Xiao, Shilong Wang, Jie Zhong, Yueru Ye, Huiru Zhou, Jing Song, Wenxin Zhao, Shutang Zhou, Huidong Wang

{"title":"Monitoring insecticide resistance and target-site mutations in field populations of Spodoptera frugiperda (Lepidoptera: Noctuidae) in China.","authors":"Baojuan Zeng, Jianghao Ding, Yajuan Xiao, Shilong Wang, Jie Zhong, Yueru Ye, Huiru Zhou, Jing Song, Wenxin Zhao, Shutang Zhou, Huidong Wang","doi":"10.1093/jee/toaf031","DOIUrl":"10.1093/jee/toaf031","url":null,"abstract":"The fall armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), a notorious invasive pest, has been widely monitored for insecticide resistance. Since its invasion of China in late 2018, early to mid-stage monitoring of resistance is particularly crucial to inform effective control strategies. Resistance ratios (RRs) derived from bioassays offer valuable insights into the overall resistance levels of field populations, while the detection of resistance allele frequencies helps uncover the potential causes of resistance variation. In this study, we established a baseline of susceptibility in third-instar larvae to 7 insecticides using a laboratory strain Xinzheng2019 and assessed the resistance levels of 9 populations collected from central and southern China between 2022 and 2023. Compared to the susceptible Xinzheng2019 strain, 2 field populations showed low-level resistance (RR = 5-10) to indoxacarb, and one exhibited low-level resistance to chlorantraniliprole. Minor resistance (RR = 3-5) was observed in 2 populations to lambda-cyhalothrin, 5 to indoxacarb, and 5 to chlorantraniliprole. All populations remained susceptible (RR < 3) to spinetoram, emamectin benzoate, chlorfenapyr, and lufenuron. Molecular analysis of 11 mutation sites across 3 key resistance-related genes (Ace-1, GluCl, and voltage-gated sodium channel [VGSC]) revealed that 52.1% of all tested samples carried either homozygous or heterozygous resistance alleles at the F290V locus of the Ace-1 gene, while no resistance mutations were detected at other sites. Our findings offer valuable insights into the insecticide resistance status of S. frugiperda field populations in China and provide guidance for effective chemical insecticide use.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"868-876"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560390","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