Journal of Pest Science最新文献

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Insecticidal activity of five major essential oil components and their binary mixtures against Jankowska dirhodum and its two biological control agents 五种主要挥发油成分及其二元混合物对黄花蓟马及其两种生物防治剂的杀虫活性
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-07-07 DOI: 10.1007/s10340-026-02067-5
Matěj Novák, Roman Pavela
{"title":"Insecticidal activity of five major essential oil components and their binary mixtures against Jankowska dirhodum and its two biological control agents","authors":"Matěj Novák, Roman Pavela","doi":"10.1007/s10340-026-02067-5","DOIUrl":"https://doi.org/10.1007/s10340-026-02067-5","url":null,"abstract":"Essential oil components such as terpenes, terpenoids and phenylpropanoids are promising active substances for development of new botanical insecticides. The objective of this study was to identify the insecticidal effectiveness of five major essential oil components and their binary mixtures against <italic>Metopolophium dirhodum</italic> (Walker) (Hemiptera: Aphididae), an important cereal pest. For the tested compounds, probit analysis was employed to estimate LC<sub>50(90)</sub> at 2.32 (8.99) mL L<sup>−1</sup> for citral, 1.07 (4.65) mL L<sup>−1</sup> for eugenol, 0.91 (2.47) mL L<sup>−1</sup> for geraniol, 2.65 (11.74) mL L<sup>−1</sup> for geranyl acetate and 2.20 (7.51) mL L<sup>−1</sup> for terpineol. Phytotoxicity for experimental plants of <italic>Triticum aestivum</italic> L. was proven for citral, eugenol and geranyl acetate at concentrations equalling the estimated LC<sub>90</sub> for <italic>M. dirhodum</italic>. Geranyl acetate was shown to be an important synergist with all the other tested compounds. The best insecticidal effect was observed in the binary mixture of geranyl acetate/terpineol (1:1 ratio), for which the LC<sub>50(90)</sub> was estimated at 0.97 (3.72) mL L<sup>−1</sup>; at the same time, no phytotoxicity to the experimental plants of <italic>T. aestivum</italic> was observed. This binary mixture also turned out to be very friendly to the larvae of <italic>Aphidoletes aphidimyza</italic> Rondani (Diptera: Cecidomyiidae) and <italic>Chrysoperla carnea</italic> Stephens (Neuroptera: Chrysopidae), two important aphid predators. Our results show that the geranyl acetate/terpineol mixture is a promising candidate for the development of environmentally friendly botanical insecticides against aphids.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"1 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","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 host plants on the insecticide susceptibility of Spodoptera frugiperda 寄主植物对褐夜蛾杀虫剂敏感性的影响
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-07-07 DOI: 10.1007/s10340-026-02062-w
Yue Yuan, Yaqin Zou, Kaiyi Zeng, Wenyan Duan, Feiyue Ren, Liutong Ye, Jingjing Fang, Zhihong Xu, Xiaolei Zhang, Junkai Li
{"title":"Effects of host plants on the insecticide susceptibility of Spodoptera frugiperda","authors":"Yue Yuan, Yaqin Zou, Kaiyi Zeng, Wenyan Duan, Feiyue Ren, Liutong Ye, Jingjing Fang, Zhihong Xu, Xiaolei Zhang, Junkai Li","doi":"10.1007/s10340-026-02062-w","DOIUrl":"https://doi.org/10.1007/s10340-026-02062-w","url":null,"abstract":"<italic>Spodoptera frugiperda</italic> (J. E. Smith) is a globally invasive pest that poses significant threats to a variety of crops. It has a wide host range of more than 353 recorded plants from 76 families. However, the herbivorous insects could have adaptation mechanisms through physiological modifications in response to constitutive defenses of different host plants. The results revealed that feeding different host plants could significantly affect LC<sub>50</sub>s of broflanilide, chlorantraniliprole, tetraniliprole, indoxacarb, metaflumizone, lufenuron, methoxyfenozide, and spinetoram to <italic>S. frugiperda</italic> compared to rearing on <italic>Zea mays</italic> (L.). Detoxification enzyme activity assays and synergist tests indicated that changes in detoxification enzyme activity cause alterations in the susceptibility of <italic>S. frugiperda</italic> to insecticides. Knockdown of <italic>UGT40F3</italic> using RNA interference (RNAi) significantly increased susceptibility to tetraniliprole in all host-fed strains. Microscale thermophoresis (MST) and molecular docking revealed a robust tetraniliprole-UGT40F3 interaction, suggesting that UGT40F3 plays a pivotal role in tetraniliprole metabolism. These results showed that different host plants can influence the detoxification enzyme activity of <italic>S. frugiperda</italic>, leading to variations in its susceptibility to insecticides. These findings provide a scientific foundation for developing effective pest management strategies.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"39 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid expansion of insecticide resistance in Acyrthosiphon kondoi and opportunities to improve chemical and biological control 锦鲤对杀虫剂的抗药性迅速扩大及加强化学和生物防治的机会
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-07-07 DOI: 10.1007/s10340-026-02068-4
Evatt Chirgwin, Nguyen Thi Phung Kieu, Karyn Moore, Aston L. Arthur, Samantha Edley, Paul A. Umina
{"title":"Rapid expansion of insecticide resistance in Acyrthosiphon kondoi and opportunities to improve chemical and biological control","authors":"Evatt Chirgwin, Nguyen Thi Phung Kieu, Karyn Moore, Aston L. Arthur, Samantha Edley, Paul A. Umina","doi":"10.1007/s10340-026-02068-4","DOIUrl":"https://doi.org/10.1007/s10340-026-02068-4","url":null,"abstract":"The bluegreen aphid (<italic>Acyrthosiphon kondoi</italic>) is a global pest of pasture and legume crops, damaging plants through feeding and the transmission of plant viruses. Since 2018, Australian growers have reported insecticide control failures involving <italic>A. kondoi</italic>, with subsequent bioassays confirming the first cases of insecticide resistance in this species worldwide. To better inform management strategies, we conducted a surveillance programme of 36 field populations across southern Australia, testing for resistance to organophosphates, carbamates, and synthetic pyrethroids. Resistance was detected in 19 populations, most commonly within alfalfa (<italic>Medicago sativa</italic>) seed production regions. We then generated baseline sensitivity data for two insecticides, sulfoxaflor and flonicamid, recently introduced for <italic>A. kondoi</italic> control in Australia<italic>,</italic> and found that both provide promising new options for resistance management. In parallel, we assessed biological control potential by surveying parasitoid wasps attacking <italic>A. kondoi</italic>. <italic>Aphidius ervi</italic> was the only species detected parasitising <italic>A. kondoi</italic> across southern Australia. Follow-up laboratory assays demonstrated high parasitism and successful emergence of <italic>A. ervi</italic> from <italic>A. kondoi</italic> and more variable performance across co-occurring aphid pests, highlighting its broader biocontrol potential in pasture and legume systems. Together, these findings demonstrate the rapidly expanding distribution of insecticide resistance in <italic>A. kondoi</italic>, confirm the value of newly available insecticides, and identify a key parasitoid for integration into management strategies. These findings provide a foundation for integrated management approaches to slow resistance evolution in <italic>A. kondoi</italic> in Australia and elsewhere.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"123 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Host plant-mediated effects on eri silkworm fitness and Trichogramma parasitoid efficacy 寄主植物对家蚕适宜性及赤眼蜂寄生效能的影响
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-06-06 DOI: 10.1007/s10340-026-02060-y
Yue Sun, Ji-Zhi Xue, Liang-De Tang, Nicolas Desneux, W. H. Jayasinghe, Lian-Sheng Zang
{"title":"Host plant-mediated effects on eri silkworm fitness and Trichogramma parasitoid efficacy","authors":"Yue Sun, Ji-Zhi Xue, Liang-De Tang, Nicolas Desneux, W. H. Jayasinghe, Lian-Sheng Zang","doi":"10.1007/s10340-026-02060-y","DOIUrl":"https://doi.org/10.1007/s10340-026-02060-y","url":null,"abstract":"The eri silkworm, <italic>Samia ricini</italic>, is the world’s third most important silkworm species, valued for its cocoon silk in traditional textiles as well as its diverse by-products, including edible pupae, bioactive materials, and organic fertilizers. Its large eggs also provide a promising factitious host for the mass-rearing of <italic>Trichogramma</italic> egg parasitoids in biological control programs. This study aimed to determine (i) whether host plants influence the development of <italic>S. ricini</italic> and (ii) whether such host plant effects cascade to the performance of six <italic>Trichogramma</italic> species. Larvae were reared on castor (<italic>Ricinus communis</italic>), Nepalese coriaria (<italic>Coriaria nepalensis</italic>), or cassava (<italic>Manihot esculenta</italic>), and key life history traits were assessed across the entire life cycle, including larval growth, developmental time, cocoon/pupal weights, adult longevity, and egg characteristics. Silkworms reared on castor showed faster larval development, higher body weight, greater cocoon/pupal mass, and longer adult longevity. Eggs from castor-fed silkworms were significantly wider, though eggshell thickness did not differ among host plants. Parallelly, the suitability of <italic>S. ricini</italic> eggs from each host plant was evaluated for <italic>Trichogramma</italic> parasitism rate, emergence rate, offspring sex ratio, and developmental time. For most <italic>Trichogramma</italic> species, eggs from castor- or cassava-fed silkworms resulted in higher parasitism and emergence rates than those from Nepalese coriaria-fed hosts. However, parasitoid responses also showed clear species-specific patterns. The developmental time of several <italic>Trichogramma</italic> species was prolonged on castor-fed silkworm eggs, indicating a trade-off between developmental time and resource acquisition. Host plant identity strongly mediated tri-trophic interactions by shaping <italic>S. ricini</italic> performance and egg suitability for parasitoids.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"4 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Callosobruchus maculatus feeding triggers multilevel defenses in cowpea seeds: from germination regulation to defensive metabolite biosynthesis 斑斑胼胝体摄食触发豇豆种子多层次防御:从发芽调节到防御代谢物生物合成
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-06-06 DOI: 10.1007/s10340-026-02059-5
Hainuo Hong, Ming Zhang, Jiamei Geng, Qiulin Chen, Zheyi Shi, Yang Gao, Ying Zhou, Zeng‑Rong Zhu
{"title":"Callosobruchus maculatus feeding triggers multilevel defenses in cowpea seeds: from germination regulation to defensive metabolite biosynthesis","authors":"Hainuo Hong, Ming Zhang, Jiamei Geng, Qiulin Chen, Zheyi Shi, Yang Gao, Ying Zhou, Zeng‑Rong Zhu","doi":"10.1007/s10340-026-02059-5","DOIUrl":"https://doi.org/10.1007/s10340-026-02059-5","url":null,"abstract":"In-depth research has been conducted on plant–herbivore interactions, and most studies on resistance to insects have been focused on plants post-emergence. Currently, little is known about how seeds respond to pest feeding. Understanding how seeds defend against pests is crucial for seed security and agricultural production. Our study revealed that mild infestation by cowpea weevil (<italic>Callosobruchus maculatus</italic>), a major pest of stored pulses, activated a defense response in stored cowpea seeds. The infestation eliminated the hardseededness and upregulated the germination-prompted genes, thereby increasing the germination rate. Detailed analysis revealed that infestation induced the expression of a series of defense genes, including those involved in the jasmonic acid (JA) signaling pathway and terpenoid synthetic pathway. Transcriptomic and metabolomic analyses identified flavonoid biosynthesis as the primary response in the infested seeds. Specifically, the isoflavonoid biosynthesis was active, with increased expression of corresponding genes and accumulation of metabolites. Further Y-tube olfactometer selection experiments showed that the infested cowpea seeds attracted male insects but repelled females, indicating that pest feeding altered the volatiles emitted by cowpeas. Our findings thus elucidated the interaction between cowpea seeds and the storage pest and indicated that seeds and plants employ similar defense systems against pests. The study also provides theoretical guidance for controlling <italic>C. maculatus</italic>.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"30 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148355582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Midgut microbial volatiles as potential behavioral regulator agents against virgin female Grapholita molesta 中肠微生物挥发物作为潜在的行为调节剂对未交配雌性鼹鼠的影响
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-06-06 DOI: 10.1007/s10340-026-02052-y
Xueli Wang, Minghui Yu, Jinyong Zhang, Hongtao Tu
{"title":"Midgut microbial volatiles as potential behavioral regulator agents against virgin female Grapholita molesta","authors":"Xueli Wang, Minghui Yu, Jinyong Zhang, Hongtao Tu","doi":"10.1007/s10340-026-02052-y","DOIUrl":"https://doi.org/10.1007/s10340-026-02052-y","url":null,"abstract":"Microorganisms residing in the insect gut play important roles in host nutrition, digestion, detoxification, and resistance to pathogens. However, the functions of gut microbial Volatile Organic Compounds (mVOCs) from insects remain largely unexplored. The oriental fruit moth, <italic>Grapholita molesta</italic> (Lepidoptera: Tortricidae), is recognized as one of the most destructive orchard pests affecting various Rosaceae fruit trees globally. In this study, we researched <italic>G. molesta</italic> and successfully isolated and identified eight bacterial and fungal strains from different genera present in the midgut of larvae and adults. Our findings indicated that both male and female adults of <italic>G. molesta</italic> were attracted to the ML10 and LAP strains, as demonstrated by Y-tube olfactometer assays. We subsequently analyzed their volatile compounds using Headspace Gas Chromatography-Ion Mobility Spectrometry (HS-GC-IMS). Y-tube olfactometer assays revealed that 2-methylpropanoic acid and 2-pentanone effectively attracted female adults at a concentration of 10 ppm. Additionally, heptaldehyde attracted female adults at concentrations of 0.1 ppm and 1 ppm. These findings expand the spectrum of volatile compounds that attract <italic>G. molesta</italic> and provide a foundation for developing microbe-based attractants for controlling this species.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"162 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leaf surface structure shapes herbivore preference and predation efficiency: leaf-mediated biocontrol in a soybean system 叶片表面结构决定草食动物偏好和捕食效率:大豆系统中叶片介导的生物防治
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-06-06 DOI: 10.1007/s10340-026-02058-6
Wei-Jiun Lin, Jo-Shih Chiu, Chuan-Kai Ho
{"title":"Leaf surface structure shapes herbivore preference and predation efficiency: leaf-mediated biocontrol in a soybean system","authors":"Wei-Jiun Lin, Jo-Shih Chiu, Chuan-Kai Ho","doi":"10.1007/s10340-026-02058-6","DOIUrl":"https://doi.org/10.1007/s10340-026-02058-6","url":null,"abstract":"Plant-herbivore-predator interactions shape community structure and ecosystem services (e.g., biocontrol). Herbivores often prefer the lower leaf side to avoid predators and environmental stress, but the mechanisms remain unclear due to confounding factors such as leaf orientation (upper vs. lower side) and surface structure (abaxial vs. adaxial surface). Here, we examined (1) herbivore preference for leaf orientation and surface structure (herbivory preference experiment), (2) its effect on predator–prey interactions (predation efficiency experiment), and (3) how leaf-mediated predation affects herbivore population dynamics and biocontrol (population growth modeling experiment). Using a soybean system consisting of soybean (<italic>Glycine max</italic>), soybean aphid (<italic>Aphis glycines</italic>), and six-spotted zigzag ladybeetle (<italic>Cheilomenes sexmaculata</italic>), we separated the effects of leaf orientation and surface structure with artificial leaves. We also experimentally reduced trichome density to evaluate its effect on predation rates and incorporated empirical data into population models. The results showed: (1) Aphid preference was primarily driven by leaf surface microstructure, particularly trichome density, rather than leaf orientation, with aphids favoring abaxial over adaxial surfaces (65.3% vs. 23.7%), consistent with higher trichome density on abaxial surfaces (8.46 vs. 2.35/mm<sup>2</sup>). (2) Ladybeetle predation on aphids was 84.5% higher on adaxial surfaces, indicating that dense trichomes reduce predation rates. (3) Population growth models further showed that adaxial surface (sparse trichomes) enhanced aphid suppression by ladybeetles, highlighting the long-term influence of leaf-mediated predation on pest dynamics. Overall, this study demonstrates that plant structural traits mediate plant-herbivore-predator interactions and underscores the importance of integrating plant structure into crop breeding and pest management.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"56 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148355544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrative mechanisms of photoperiod and temperature regulation in insect diapause 昆虫滞育过程中光周期和温度调节的综合机制
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-05-13 DOI: 10.1007/s10340-026-02048-8
Dilawar Abbas, Kamran Haider, Farman Ullah, Muhammad Yasir Ali, Umer Liaqat, Maolin Hou
{"title":"Integrative mechanisms of photoperiod and temperature regulation in insect diapause","authors":"Dilawar Abbas, Kamran Haider, Farman Ullah, Muhammad Yasir Ali, Umer Liaqat, Maolin Hou","doi":"10.1007/s10340-026-02048-8","DOIUrl":"https://doi.org/10.1007/s10340-026-02048-8","url":null,"abstract":"Insect dormancy (diapause) is a state of developmental arrest triggered by environmental signals and serves as a vital survival strategy for insects facing harsh seasonal conditions. This article provides a comprehensive review of how photoperiod and temperature regulation of insect dormancy works, covering molecular signaling pathways (such as circadian clock genes, hormone regulation, and the insulin–FoxO pathway), epigenetic mechanisms (like DNA methylation and histone modification), physiological changes (including metabolism inhibition and buildup of cold-hardiness substances), and ecological adaptation strategies. Research indicates that insects sense shifts in photoperiod and temperature to activate intricate endocrine and gene regulatory networks, enabling the precise initiation or termination of dormancy. Although considerable progress has been made recently in understanding the molecular basis of dormancy, challenges remain, including significant variation among species, complex regulatory networks, and unclear mechanisms of climate response. Future research should integrate multi-omics approaches, conduct cross-species comparisons, and develop ecological models to deepen theoretical understanding of dormancy, thereby supporting green agricultural pest management and biodiversity conservation.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"18 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Salinity impacts biocontrol: a tri-trophic assessment of the effects of soil salinity on plant signaling and parasitoid fitness 盐度影响生物防治:土壤盐度对植物信号和寄生蜂适应性影响的三营养评估
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-05-13 DOI: 10.1007/s10340-026-02043-z
Sahil V. Pawar, Bijay Subedi, Rorri Mueller, Mahendra Pawar, Sujay M. Paranjape, Michelle Peiffer, Monica Kersch-Becker, Jared Ali, Gary W. Felton
{"title":"Salinity impacts biocontrol: a tri-trophic assessment of the effects of soil salinity on plant signaling and parasitoid fitness","authors":"Sahil V. Pawar, Bijay Subedi, Rorri Mueller, Mahendra Pawar, Sujay M. Paranjape, Michelle Peiffer, Monica Kersch-Becker, Jared Ali, Gary W. Felton","doi":"10.1007/s10340-026-02043-z","DOIUrl":"https://doi.org/10.1007/s10340-026-02043-z","url":null,"abstract":"Soil salinization and insect herbivory pose significant threats to global food security. While biocontrol agents like parasitoid wasps are a key pest management strategy, their efficacy may be compromised by abiotic stressors cascading through trophic levels. This study investigates the tri-trophic interactions among tomato plants ( <jats:italic>Solanum lycopersicum</jats:italic> ), the caterpillar pest <jats:italic>Helicoverpa zea</jats:italic> , and its specialist endoparasitoid <jats:italic>Microplitis croceipes</jats:italic> , under salinity stress. In Y-tube olfactometer assays, <jats:italic>M. croceipes</jats:italic> were significantly more attracted to herbivore-damaged plants grown under control conditions compared to those under salinity stress. While the volatile blend emitted by plants did not differ between treatments, shifts in volatile emissions of <jats:italic>α</jats:italic> -copaene, 3 <jats:italic>E</jats:italic> -hexenol, methoxy phenyl oxime, and TMTT, likely influenced parasitoid choices. To determine whether these plant-mediated changes extended to host quality, we conducted separate behavioral and developmental assays. When presented with a choice, female wasps exhibited no oviposition preference between “non-salty” and “salty” hosts. However, the impact of salinity on parasitoid performance was stage-dependent with salinity stress significantly delaying larval development but not affecting offspring sex ratios. These findings suggest that salinity induces complex trade-offs between parasitoid attraction and fitness metrics, influencing top-down control exerted by parasitoids. This highlights the critical need for integrated frameworks that account for abiotic factors when designing biological control strategies for herbivore populations in saline environments.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"3 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the effects of terpene and cannabinoid variation in hemp (Cannabis sativa) germplasm on Helicoverpa zea oviposition and larval fitness 评价大麻种质中萜烯和大麻素的变化对玉米螺旋虫产卵和幼虫适合度的影响
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2026-05-13 DOI: 10.1007/s10340-026-02044-y
Samikshya Pandey, Kiani Stowers-Fann, Jennifer Duringer, Stephen Baluch, Vaughn M. Walton, Seth J. Dorman, Govinda Shrestha
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