Journal of economic entomology最新文献_第5页

Impact of hilling timing on soybean gall midge (Diptera: Cecidomyiidae) abundance, plant injury, and yield.

Journal of economic entomology Pub Date : 2025-02-12 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":"https://doi.org/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":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401065","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

Cathepsin F alters viral acquisition, retention, and transmission of TYLCV and ToCV by Bemisia tabaci MED.

Journal of economic entomology Pub Date : 2025-02-12 DOI: 10.1093/jee/toae269

Xiaobin Shi, Pei Wang, Caihua Shi, Ruixue Luo, Deyong Zhang, Zhuo Zhang, Yang Gao, Jing Peng, Evan L Preisser, Yong Liu

{"title":"Cathepsin F alters viral acquisition, retention, and transmission of TYLCV and ToCV by Bemisia tabaci MED.","authors":"Xiaobin Shi, Pei Wang, Caihua Shi, Ruixue Luo, Deyong Zhang, Zhuo Zhang, Yang Gao, Jing Peng, Evan L Preisser, Yong Liu","doi":"10.1093/jee/toae269","DOIUrl":"https://doi.org/10.1093/jee/toae269","url":null,"abstract":"Tomato yellow leaf curl virus (TYLCV) and Tomato chlorosis virus (ToCV) are plant-infecting viruses that are mainly transmitted by Bemisia tabaci Gennadius. In addition to their significant individual impacts on agricultural production, TYLCV and ToCV co-infections are increasingly common and can cause devastating losses in tomato and other crops. Cathepsins, the main proteases in lysosomes, affect both immune responses and the digestion of plant proteins and may help mediate Bemisia-virus-plant interactions. We conducted research exploring the role of cathepsin in the interaction between B. tabaci MED and the plant viruses TYLCV and ToCV, both singly and in combination, on tomato. Levels of cathepsin F increased sharply in B. tabaci MED after feeding on TYLCV-infected, ToCV-infected, and co-infected plants and remained elevated for several days after feeding cessation. In all cases, levels were higher in co-infected B. tabaci MED than in singly infected individuals. Viral loads of each virus were also higher in co- versus singly infected B. tabaci MED, suggesting a synergistic relationship between TYLCV and ToCV. We next studied how dosing B. tabaci MED with a cathepsin inhibitor, inducer, or control affected viral acquisition, retention, and transmission. Viral acquisition and retention were lower in B. tabaci MED treated with cathepsin inducer than in controls; B. tabaci MED treated with cathepsin inhibitor had higher rates of viral acquisition and retention. Viral transmission was highest in the inhibitor treatment and lowest in the inducer treatment. Our results provide more opportunities for the design of novel control strategies to manage insect vectors and their transmitted viruses.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401062","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

Nondestructive detection and rapid segmentation of the development process of Sitophilus zeamais in single wheat kernels based on CT and MV-UNet.

Journal of economic entomology Pub Date : 2025-02-12 DOI: 10.1093/jee/toaf015

Ju Gao, Ying Zhou, Yanbo Hui, Yongzhen Zhang, Qiao Wang, Juanjuan Liu, Xiaoliang Wang, Hongxiao Wang, Hao Ding, Haiyang Ding

{"title":"Nondestructive detection and rapid segmentation of the development process of Sitophilus zeamais in single wheat kernels based on CT and MV-UNet.","authors":"Ju Gao, Ying Zhou, Yanbo Hui, Yongzhen Zhang, Qiao Wang, Juanjuan Liu, Xiaoliang Wang, Hongxiao Wang, Hao Ding, Haiyang Ding","doi":"10.1093/jee/toaf015","DOIUrl":"https://doi.org/10.1093/jee/toaf015","url":null,"abstract":"Wheat is prone to insect infestations during harvesting, transportation, and storage, leading to heat, mold, and deterioration. Timely pest detection is vital for effective prevention and improved storage quality. Traditional methods, such as manual identification and biological information detection, have limitations, including low efficiency, grain damage, and difficulty in identifying pest larvae. This study proposed a method for detecting Sitophilus zeamais (S. zeamais) in the interior of wheat based on computed tomography technology and the Multi-feature and Vision Transformer U-Net model. The U-Net was enhanced with the Multi-Feature Extraction block and the Residual Vision Transformer block. After 200 training iterations, the model achieved a mean Intersection over Union of 94.4%. To use image processing technology to segment S. zeamais, create 3D models, and extract features such as volume, surface area, and length. S. zeamais develops through stages: egg, early larva, late larva, pupal, and adult. From epidermal erosion into the endosperm, it transitions from a round egg stage to a columnar shape and then develops various organs. The volume of the S. zeamais increases from 0.008 to 0.018 mm³ during the egg stage to 0.89 to 1.16 mm³ in the adult stage, and its length grows from 0.176 to 0.284 mm during the egg stage to 2.416 to 2.865 mm in the adult stage. This method offers accurate, rapid extraction and visualization of S. zeamais developmental information, supporting early-stage variation analysis and enhancing wheat quality and pest control.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401066","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

Seasonal drought drives sugarcane borer outbreaks. 季节性干旱导致甘蔗螟虫爆发。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae275

Leyun Wang, Zihua Zhao

{"title":"Seasonal drought drives sugarcane borer outbreaks.","authors":"Leyun Wang, Zihua Zhao","doi":"10.1093/jee/toae275","DOIUrl":"10.1093/jee/toae275","url":null,"abstract":"Sugarcane borers (SCB) pose a major threat to sugarcane production. Effective pest management requires detailed knowledge of SCB phenology and population dynamics in responses to environmental changes. This study tested the hypothesis that drought drives SCB outbreaks and identified season-specific effects by investigating large-scale field data of these pests in 4 key sugarcane-growing provinces in south subtropical and tropical China (Guangxi, Guangdong, Yunnan, and Hainan) from 1987 to 2018. The standardized precipitation evapotranspiration index was used as a drought indicator at various time scales. We found that drought during a specific month can result in significant changes in the annual SCB outbreak status, such as November in Guangxi, June in Yunnan, and September in Hainan. By summarizing seasonal effects of drought across study locations, we found a general pattern that SCB outbreaks increased with drier conditions in summer, whereas they were promoted by wetter conditions in fall. This research provides crucial knowledge for predicting SCB outbreaks under seasonal and climate changes. This information is also highly critical for increasing the efficiency and accuracy of integrated pest management strategies.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"145-151"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645296","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

A low cost and labor-efficient method for rearing an invasive beetle, Carpophilus truncatus (Coleoptera: Nitidulidae). 一种低成本、低劳动效率的饲养入侵甲虫——截蝽（鞘翅目：黑蝽科）的方法。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae290

Raman Bansal, Jhalendra Rijal, David Haviland, Sudan Gyawaly, Houston Wilson

{"title":"A low cost and labor-efficient method for rearing an invasive beetle, Carpophilus truncatus (Coleoptera: Nitidulidae).","authors":"Raman Bansal, Jhalendra Rijal, David Haviland, Sudan Gyawaly, Houston Wilson","doi":"10.1093/jee/toae290","DOIUrl":"10.1093/jee/toae290","url":null,"abstract":"The carpophilus beetle, Carpophilus truncatus Murray, 1864 (Coleoptera: Nitidulidae) is an invasive pest recently detected in California's tree nut crop orchards. Here we report a simple, labor-saving, and cost-effective rearing system for C. truncatus utilizing banana and industrial sand components. Banana slices served as both a larval and adult diet source as well as a moisture source to facilitate pupation within the underlying sand. The combination of banana and sand within a single container successfully supported the development of all C. truncatus life stages over multiple generations. The average developmental times recorded in rearing units placed under environmental conditions of 26°C, 60% relative humidity, and 16:8 h (light:dark) photoperiod were: egg to wandering stage larva, 7.54 days; wandering stage to adult, 11.08 days; and adult longevity, 94.33 days. These banana-sand rearing units facilitated the easy collection of all C. truncatus developmental stages, except for eggs. To address this challenge, standalone oviposition chambers utilizing a lima bean-based agar diet were evaluated. These chambers effectively enabled the collection as well as tracking of eggs for different research purposes. The average developmental time recorded for eggs, from initial oviposition to neonate hatching, was 3.20 days. These rearing as well as egg collection approaches provide cost-effective tool to investigate biology, life-history traits and ecology, as well as evaluate approaches to control this invasive pest.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"291-297"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142916528","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

Decreased emergence rates of adult house flies (Musca domestica; Diptera: Muscidae) due to exposure to commercially available insecticidal baits during larval development. 降低家蝇（Musca domestica）成虫的出现率；双翅目：蝇科)由于在幼虫发育期间暴露于市售的杀虫诱饵。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae310

Jimmy B Pitzer, Jessica D Navarro, Evan S Phillips

{"title":"Decreased emergence rates of adult house flies (Musca domestica; Diptera: Muscidae) due to exposure to commercially available insecticidal baits during larval development.","authors":"Jimmy B Pitzer, Jessica D Navarro, Evan S Phillips","doi":"10.1093/jee/toae310","DOIUrl":"10.1093/jee/toae310","url":null,"abstract":"House flies, Musca domestica L. (Diptera: Muscidae), are commonplace pests in both urban and agricultural settings. The potential for house flies as vectors of many disease-causing organisms to humans and animals, coupled with their incessant nuisance behaviors toward these hosts has resulted in a desire to manage their populations. Although many house fly management tools are available, insecticide use continues to predominate as the preferred choice. One such option, insecticidal baits, is commercially available in a variety of active ingredients that encompass several modes of action. Though they can be effective, resistance to many of the active ingredients used in bait formulations has been documented. The primary pathway for resistance evolution to bait products likely has been selection at the targeted adult stage. However, exposure at the larval stage may occur when these products are scattered on substrates, contaminating sub-surface developmental areas and ultimately, playing a selective role as well. A study was conducted to assess the potential mortality effects of insecticidal bait products on house fly larval development when applied according to the manufacturer's recommended label rate. Adult house fly emergence was reduced by nearly 40% due to treatment, supporting the implication that bait-driven mortality during larval development may represent a previously unrecognized selection pathway contributing to resistance evolution against these products.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"391-396"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142960754","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

Bell pepper endornavirus alters green peach aphid (Hemiptera: Aphididae) host choice and population dynamics. 甜椒内病毒改变了青桃蚜（半翅目：蚜科）的寄主选择和种群动态。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae256

Sunil Paudel, Rodrigo A Valverde, Jeffrey A Davis

{"title":"Bell pepper endornavirus alters green peach aphid (Hemiptera: Aphididae) host choice and population dynamics.","authors":"Sunil Paudel, Rodrigo A Valverde, Jeffrey A Davis","doi":"10.1093/jee/toae256","DOIUrl":"10.1093/jee/toae256","url":null,"abstract":"Bell pepper endornavirus (BPEV) Alphaendornavirus capsici (Endornaviridae) is an RNA virus that infects many pepper (Capsicum annuum) horticultural types and is seed transmitted. BPEV does not cause apparent symptoms and is found at every plant developmental stage. During the domestication of bell pepper, plant breeders, unaware of the existence of endornaviruses in the germplasm, selected endornavirus-infected genotypes. This could be an indication that the presence of endornaviruses in this crop is beneficial. Among the possible beneficial effects that endornaviruses may provide to their host could include tolerance or resistance to biotic and abiotic agents and, therefore, may have evolved a symbiotic relationship with their hosts. With this in mind, we set out to determine host preference, host suitability, and population dynamics of green peach aphid Myzus persicae (Sulzer) on BPEV-infected and virus-free bell pepper near-isogenic lines. During choice bioassay experiments, we observed that a higher proportion of M. persicae adults settled on BPEV noninfected leaves as compared to BPEV-infected leaves. Life table analysis revealed that M. persicae performed less well on BPEV-infected leaf tissues, with reductions in longevity, progeny, and intrinsic rate of increase. These results indicate BPEV is beneficial to its host, protecting against an important generalist pest.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"57-62"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142515374","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

Optimizing decision-making potential, cost, and environmental impact of traps for monitoring olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae). 优化油橄榄小实蝇（双翅目：蝗科）监测陷阱的决策潜力、成本和环境影响。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae296

Flora Moreno-Alcaide, Enrique Quesada-Moraga, Pablo Valverde-García, Meelad Yousef-Yousef

{"title":"Optimizing decision-making potential, cost, and environmental impact of traps for monitoring olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae).","authors":"Flora Moreno-Alcaide, Enrique Quesada-Moraga, Pablo Valverde-García, Meelad Yousef-Yousef","doi":"10.1093/jee/toae296","DOIUrl":"10.1093/jee/toae296","url":null,"abstract":"This work aimed to optimize olive fruit fly (OFF) Bactrocera oleae (Rossi) (Diptera: Tephritidae) monitoring and integrated management, thereby ensuring optimal and less-costly decision-making and timely intervention. Field trials in Andalusia (Spain) were undertaken over 2 years to optimize trap model, color, size, and density for the accurate determination of pest spatial distribution and damage as a function of olive cultivar. McPhail traps and yellow sticky panels outperformed the other 4 models with respect to the number of OFF captured. However, McPhail traps caught more natural enemies than yellow sticky panels and so sticky panels were selected to unravel the effect of color on the number of both OFF and natural enemies [hymenopteran parasitoids (Psyttalia concolor) and lacewings (Chrysopidae)] captured. Yellow sticky panels outperformed white, green, and blue ones for the number of OFF captured and captured the fewest natural enemies. When comparing the surface area of yellow sticky panels, 20 × 25 and 10 × 25 cm double-sided panels were equally effective at catching OFF. However, large double-sided yellow sticky panels caught significantly more natural enemies than the small double-sided panels, a key result for developing a less costly and environmentally friendly monitoring system. Furthermore, it was shown that the damage curve had a cultivar-based shape, i.e., for the same population size of OFF the damage caused varied depending on cultivar. Finally, 15 sticky panels per hectare were the optimal number for estimation of OFF spatial distribution. The present research provides key information for new trap design, OFF forecasting, and IPM development.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"219-228"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11818383/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142960721","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

The influence of crop and leaf position on thrips (Thysanoptera: Thripidae) oviposition in cotton, soybean, and peanut seedlings. 作物和叶片位置对蓟马（Thysanoptera: Thripidae）在棉花、大豆和花生上产卵的影响。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae294

Giovani Rossi, Jessica B Mahas, Anitha Chitturi, Scott H Graham, Alana L Jacobson

{"title":"The influence of crop and leaf position on thrips (Thysanoptera: Thripidae) oviposition in cotton, soybean, and peanut seedlings.","authors":"Giovani Rossi, Jessica B Mahas, Anitha Chitturi, Scott H Graham, Alana L Jacobson","doi":"10.1093/jee/toae294","DOIUrl":"10.1093/jee/toae294","url":null,"abstract":"Thrips (Thysanoptera: Thripidae) can injure seedling cotton (Gossypium hirsutum L.), soybean (Glycine max (L.) Merr.), and peanut (Arachis hypogaea L.) crops in the southern United States. The planting window and timing of thrips infestations into these crops overlap in the region, but thrips preference for oviposition has not been investigated. We evaluated thrips preference for cotton, soybean, and peanut by counting eggs, immatures, and adults at the cotyledon to 4 true leaf stages. Peanut was significantly more attractive for oviposition than cotton and soybean. Oviposition in cotton was significantly higher in the cotyledons than the other leaves. The highest oviposition in soybeans also occurred in the cotyledons but differed only significantly from the fourth true leaf. In all crops, there was no significant difference among oviposition in the true leaves. The highest number of immatures were found on cotton, followed by peanut and then soybean, while adults were evenly distributed among crops. Our results suggest that while peanut is preferred for oviposition, this crop may not facilitate immature development and survival as effectively when compared with cotton. This study presents an initial examination of crop selection by thrips under field conditions and suggests peanut may be the preferred oviposition host.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"459-464"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11818390/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901466","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

Characterization of insecticide resistance and their mechanisms in field populations of the German cockroach (Blattodea: Ectobiidae) in Taiwan under different treatment regimes. 台湾德国小蠊（Blattodea: Ectobiidae）田间种群在不同处理制度下的杀虫剂抗药性特征及其机制。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae252

Panida Kruaysawat, Mei-Er Chen, Shao-Hung Lee, Chow-Yang Lee, Kok-Boon Neoh

{"title":"Characterization of insecticide resistance and their mechanisms in field populations of the German cockroach (Blattodea: Ectobiidae) in Taiwan under different treatment regimes.","authors":"Panida Kruaysawat, Mei-Er Chen, Shao-Hung Lee, Chow-Yang Lee, Kok-Boon Neoh","doi":"10.1093/jee/toae252","DOIUrl":"10.1093/jee/toae252","url":null,"abstract":"This study investigated how management strategies influence resistance profiles in German cockroach (Blattella germanica (L.)) populations and their impact on the performance of commercial gel baits containing fipronil, imidacloprid, and indoxacarb. Field populations from premises managed under 3 different strategies: Baiting, random insecticide (RI) used, and insecticide rotation (IR) were tested. Almost all populations under RI and IR were resistant to deltamethrin, but low to moderate resistance was observed under the Baiting approach. Cytochrome P450 monooxygenases (P450) were involved in deltamethrin resistance in these resistant populations. All individuals under Baiting and RI were homozygous for the L993F mutation, but the populations under IR lacked homozygous-resistant individuals. Eighty-three percent of field populations with complete homozygosity for the Rdl mutation displayed low mortality upon exposure to 3× LD95 fipronil. The effect of P450 and the Rdl mutation conferred high fipronil resistance in populations under the Baiting approach, recording moderate performance indices (PI) of 44-67 in fipronil bait. By contrast, those populations under RI and IR, in which involve glutathione S-transferases in fipronil resistance, had high PIs of 78-93. Almost 80% of populations exhibited over 90% mortality at 3× LD95 indoxacarb treatment, accompanied by high PIs of 90-100 in indoxacarb bait. Partial mortality from 1× LD95 imidacloprid occurred across all field populations due to the involvement of P450. PIs of imidacloprid bait ranged 5-57 and 20-94 in populations under RI and IR, respectively. Field populations demonstrate different resistance profiles depending on the treatment regimes, and the resistance mechanisms involved influenced gel bait's effectiveness.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"307-319"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559882","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