Journal of economic entomology最新文献

{"title":"The effects of mixed prey (Tetranychus turkestani and Tetranychus truncatus) on the growth, development, and fecundity of Neoseiulus bicaudus.","authors":"Li Zuo, Wenrui Chen, Siqiong Tang, Chen Fang, Jifei Dou, Jie Su, Jianping Zhang","doi":"10.1093/jee/toaf058","DOIUrl":"10.1093/jee/toaf058","url":null,"abstract":"<p><p>In biological control, prey type, structure, and abundance influence predator populations. The predatory mite Neoseiulus bicaudus Wainstein (Acari: Phytoseiidae) can control both Tetranychus turkestani Ugarov et Nikolskii (Acari: Tetranychidae) and Tetranychus truncatus Ehara (Acari: Tetranychidae), which often coexist in nature. Does N. bicaudus feeding on both prey species in mixed field populations experience enhanced population growth or remain unaffected by prey type? This study used the age-stage 2-sex life table theory to examine the developmental and reproductive characteristics of N. bicaudus fed the 2 prey (T. truncatus: T. turkestani at 1:20, 1:10, and 1:5 ratios) and a single prey diet (T. turkestani is a dominant species for crops such as cotton in Northern Xinjiang). The results showed that, compared to a single prey diet (where the preadult stage duration 5.367 d, intrinsic rate of increase (r) = 0.198 d-1, finite rate of increase (λ) = 1.219 d-1, and mean generation time (T) = 12.81 d), the mixed prey diet significantly shortened the preadult stage, increased fecundity, and enhanced the values of r and λ, while shortening T. The population had the highest intrinsic rate of increase at a ratio of 1:5 (preadult stage = 4.906 d, r = 0.245 d-1, λ = 1.277 d-1, and T = 11.58 d). Compared to single-prey feeding, mixed prey ratios of 1:20, 1:10, and 1:5 increased population growth by 1.39, 2.72, and 6.59 times, respectively. Therefore, mixed prey enhances the development and reproduction of N. bicaudus, thereby further optimizing its mass rearing and field release.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1072-1082"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144033276","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":"Isocycloseram seed treatment for reducing wireworm populations (Agriotes obscurus) (Coleoptera: Elateridae) and protecting wheat crops in British Columbia.","authors":"Willem G van Herk, Robert S Vernon","doi":"10.1093/jee/toaf055","DOIUrl":"10.1093/jee/toaf055","url":null,"abstract":"<p><p>Wireworms (Coleoptera: Elateridae), the larval stage of several economic click beetle species, have become major cereal crop pests in key agricultural regions of Canada and the United States. In recent trials following minimum tillage practices (Alberta), we determined that isocycloseram, the initial isoxazoline agricultural seed treatment developed, provided exceptional control of cereal crop damage, and significantly reduced neonate and resident wireworm populations of the sugarbeet wireworm, Limonius californicus (Mannerheim). Herein we evaluated isocycloseram in cultivated wheat plots (British Columbia) for control of the dusky wireworm, Agriotes obscurus L., and collectively these studies determined that isocycloseram applied at 5.0 to 7.5 g AI/100 kg seed protected crop stand and yield from these species equal to all currently registered wireworm seed-treatment insecticides (ie, neonicotinoids, diamides, and meta-diamides), and significantly reduced resident and neonate wireworms equal to levels expected from the former industry standard lindane. Abiotic and biotic conditions negatively influencing insecticide performance and ways to mitigate them were also identified. These conditions include soil fertility, moisture, and compaction, and planting after most wireworm feeding in the spring has occurred.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1251-1261"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144061101","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":"Adult feeding on different carbohydrates affects the reproduction and flight performance of Spodoptera frugiperda (Lepidoptera: Noctuidae).","authors":"Haibo Yang, Shanshan Guo, Yalan Sun, Jing Lu, Dingxu Li, Pinhong Zhu","doi":"10.1093/jee/toaf075","DOIUrl":"10.1093/jee/toaf075","url":null,"abstract":"<p><p>Adult supplemental nutrition can provide an energy source for insect flight activities and reproduction. Carbohydrate-rich nectar plants are the main food source for migratory lepidopteran moths. However, little is known about the effects of diverse carbohydrates in nature on moth migration and reproduction. This study investigates the impact of various carbohydrates on the fecundity and flight performance of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), a globally migratory pest. The results showed that the oviposition period, longevity, fecundity, and flight capability of adult moths were significantly different when supplemented with different carbohydrates. In particular, adults supplemented with fructose solution exhibited the longest lifespan, the highest number of eggs laid per female, and an earlier age of peak egg production. However, there were no significant differences in the preoviposition period, mating rate, number of matings, or egg hatching rate between moths supplemented with distilled water and those supplemented with carbohydrates. In addition, moths supplemented with honey solution flew the longest distance, at the fastest speed, and over the longest duration. These results indicate that fructose may be a key determinant in the reproduction of S. frugiperda, while honey solution supplementation exhibited superior flight performance. This further enhances our understanding of the trophic ecology of S. frugiperda and is important for improving ecological strategies to manage this pest.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1207-1214"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144060660","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":"Impact of cactus moth (Lepidoptera: Pyralidae) pest densities on fruit production and quality in cactus pear.","authors":"Malena Fuentes Corona, Carolina Mengoni Goñalons, María C Cecere, Stephen D Hight, Daniel Poveda-Martínez, Laura Varone","doi":"10.1093/jee/toaf066","DOIUrl":"10.1093/jee/toaf066","url":null,"abstract":"<p><p>The prickly pear cactus, Opuntia ficus-indica (L.) Miller, is the most economically important Cactaceae species worldwide. It thrives in arid and semiarid agricultural lands with minimal inputs, providing benefits such as livestock fodder, fruit, and vegetable production. The South American cactus moth, Cactoblastis cactorum (Berg), represents the most important insect pest of prickly pear crops. This study aimed to evaluate the impact of C. cactorum feeding on O. ficus-indica plants in a plantation in northwestern Argentina. Fruit production, fruit attributes, and plant size were evaluated under increasing C. cactorum pest densities in a manipulative 3-yr-long experiment (2018 to 2020). In the 2019 harvest, the increase in the pest density significantly reduced the number of fruits produced/plant. Plants with the highest pest density produced 60% fewer fruits than pest-free plants. In the 2020 harvest, the reduction was marginal. Fruit and pulp weights significantly declined with increasing C. cactorum densities in both years. No effect occurred on plant size or fruit sweetness. This was the first effort to measure the magnitude of the impact of C. cactorum on a cactus crop species and provides crucial information for prickly pear fruit producers. This information is helpful to implement more effective preventive and control measures to protect producers' investment and ensure a profitable harvest. Further studies in younger plantations and other areas will help develop an economic damage threshold level to support Integrated Pest Management decisions to limit C. cactorum's impact.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1262-1270"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144039109","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":"A predator pheromone increases potato yield through multiple mechanisms involving plant and prey responses.","authors":"Laura Martinez, Nicholas C Aflitto, Fiona T MacNeill, Ari Grele, Jennifer S Thaler","doi":"10.1093/jee/toaf097","DOIUrl":"10.1093/jee/toaf097","url":null,"abstract":"<p><p>Predators and their cues can change prey traits, including prey feeding behavior and abundance, even without direct predation. While these nonconsumptive effects are common in agricultural systems, their impact on crop yield is less understood. We investigated the impact of a synthetic predator pheromone on potato tuber yield and its underlying mechanisms within a Colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae), and predatory stink bug, Podisus maculiventris Say (Hemiptera: Pentatomidae), system. Previous studies demonstrated that releasing the predator pheromone reduces beetle abundance and herbivore damage, and we tested whether this translated into increases in yield. We then tested the mechanisms through which the predator pheromone could increase yield. In addition to the prey responding to predator cues, we tested 2 additional hypotheses: that the pheromone influences predator abundance and plant responses, both potentially contributing to beetle suppression and yield improvement. Over 2 field seasons, pheromone-treated plots showed a 13% increase in tuber yield and fewer Colorado potato beetle larvae, suggesting yield improvement is correlated to reduced beetle abundance. Field observations indicated that stink bug predator densities were too low to significantly impact beetle populations. Instead, in lab experiments, we found that plants exposed to the pheromone flowered earlier and exhibited induced resistance, reducing larval feeding. These findings demonstrate that predator cues can enhance crop yields by influencing both plant and prey responses, highlighting their potential use in integrated pest management.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1297-1306"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063661","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":"How do termite baits work? implication of subterranean termite colony demography on the successful implementation of baits.","authors":"Thomas Chouvenc","doi":"10.1093/jee/toae243","DOIUrl":"10.1093/jee/toae243","url":null,"abstract":"<p><p>In 1995, the launch of the first commercial chitin synthesis inhibitor (CSI) bait led to the transformation of the subterranean termite control industry around the world. Their slow mode of action, which relies on both their ability to be transferred among nestmates and termite molting biology, has made them cost-effective solutions for subterranean termite colony elimination while minimizing the introduction of pesticides into the soil toward an environmentally sustainable strategy. However, despite successful commercial implementations, the acceptance of their use varies within the pest control industry around the world. Notably, the nuanced complexity of how CSI baits lead to colony elimination upon feeding by termite foragers has, in part, remained elusive for the past 3 decades, allowing for long-lasting misconceptions to persist. A recent series of studies has since provided complementary elements of understanding how CSI baits utilize termites' inherent colony demography, behavior, and physiology to trigger colony elimination after a characteristic succession of events within the colony collapse process. I here provide a synthetic overview of subterranean termite colony characteristics when exposed to CSI baits using Coptotermes (Wasmann) (Blattodea: Heterotermitidae) as a primary model system. The changes in colony demography through the colony collapse reflect how the mode of action of CSI baits makes them a prime solution for sustainable subterranean termite pest management. Following decades of innovation, ongoing interactions among termite researchers, bait product manufacturers, and pest management providers must continue to bring solutions to existing and emerging termite pest problems around the world.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"997-1007"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12167855/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484289","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}

{"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":"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":"1335-1343"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12167854/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744660","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}

{"title":"An overview of the development of termite baits in the past 3 decades.","authors":"Nan-Yao Su","doi":"10.1093/jee/toae224","DOIUrl":"10.1093/jee/toae224","url":null,"abstract":"<p><p>Since the commercialization in 1995, termite baits have been introduced in 32 countries, protecting over 3.7 million homes and reducing pesticide use by more than 11,100 metric tons. Over the past 3 decades, advancements have been made to address the limitations of bait systems, including improvements in bait toxicants, bait matrices, and the frequency of required site visits. Termite baits have been applied in both commercial and experimental area-wide projects. This article discusses the factors contributing to the success of these projects and the key elements driving the progress and advancements in termite bait technology.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1008-1013"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484282","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":"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":"1104-1114"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","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":"Effects of temperature, relative humidity, and photoperiod on life history of Cotesia ruficrus (Hymenoptera: Braconidae), an indigenous parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae).","authors":"Wen-Qin Yang, Xian Li, Fan-Xin Meng, Tong-Xian Liu, Shi-Ze Zhang","doi":"10.1093/jee/toaf083","DOIUrl":"10.1093/jee/toaf083","url":null,"abstract":"<p><p>The indigenous parasitoid Cotesia ruficrus (Haliday) (Hymenoptera: Braconidae) shows promise as a biological control agent for managing the invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in China. However, the influence of environmental factors on C. ruficrus performance remains poorly understood. This study aimed to investigate the effects of temperature, relative humidity, and photoperiod on the life history of C. ruficrus. The life-history traits were measured at 5 different temperatures (20, 23, 26, 29, and 32 ± 1 °C), 4 RH levels (40%, 55%, 70%, and 85 ± 5%), and 5 photoperiod levels (L:D 8:16, 10:14, 12:12, 14:10, and 16:8). As temperature increased from 20 to 32 °C, the immature developmental duration (from 19.8 to 11.0 d), egg load (from 263.8 to 100.8), adult size (from 0.75 and 0.72 to 0.66 and 0.65 mm for female and male, respectively), and longevity (from 28.43 and 24.98 to 5.03 and 5.3 d for female and male, respectively) significantly reduced, while parasitism rates remained stable (56.8% to 66.3%) but emergence rates decreased above 26 °C (from 93% to 75%). Higher RH (>70%) improved emergence rates (87% to 93%), sex ratios (0.63), egg load (278), and longevity (above 10 d for male and 14 d for female), with no significant effect on parasitism rates (65% to 69%). The highest parasitism rate (65%), sex ratio (0.63), and egg load (278) occurred under 14:10 photoperiod, with emergence rates (81% to 87%) unaffected by photoperiod changes. Collectively, optimal conditions for C. ruficrus development and reproduction were identified as 26 ± 1 °C temperature, 14:10 photoperiod, and above 70% RH.</p>","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"1133-1145"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144000987","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}