Journal of Pest Science最新文献

{"title":"Interspecific predation of a native herbivore facilitates colonization by fall armyworms, Spodoptera frugiperda","authors":"Yingying Song, Kangwen Sun, Sen Guo, Zhaoke Dong, Ritao Qu, Hongying Cui, Wenxiu Guo, Baohua Ye, Lili Li, Yuyong Liang, Xingyuan Men","doi":"10.1007/s10340-024-01824-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01824-8","url":null,"abstract":"<p><i>Spodoptera frugiperda</i> is a newly invasive pest in China, often sharing the same feeding niche with native <i>S. exigua</i>. To clarify the competitive displacement, colonization and potential threat to crops by <i>S. frugiperda</i>, the cannibalism and predation behavior, feeding preferences, development and reproduction of both species under laboratory conditions, as well as the population dynamics and damage to maize plants in the field, were studied. Results found that food scarcity intensified interspecific predation between <i>S. frugiperda</i> and <i>S. exigua</i>, but the survival rate of 4th instar <i>S. frugiperda</i> was not significantly influenced (&gt; 93%; <i>P</i> &gt; 0.05). Although <i>S. frugiperda</i> exhibited less aggressive behaviors, its cannibalism coefficient and attack intensity were significantly higher than those of <i>S. exigua</i> (<i>P</i> &lt; 0.05). Moreover, <i>S. frugiperda</i> showed a higher feeding preference for mechanically lethal insects when the maize leaf supply was insufficient. Additionally, a combined diet of maize leaves and lethal insects significantly increased their pupal weight and fecundity (<i>P</i> &lt; 0.05)<i>.</i> Field trials showed that when <i>S. frugiperda</i> and <i>S. exigua</i> co-occurred, the population of <i>S. frugiperda</i> at mature stage was similar to that after the intraspecific treatment, and seriously damaged maize plants. These results suggested that interspecific predation by <i>S. frugiperda</i> on <i>S. exigua</i> not only conferred an obvious advantage, but may also promote its development and reproduction, and facilitated its colonization in the invaded area. Our results provide an understanding of the rapid colonization mechanisms of <i>S. frugiperda</i> and will assist development of integrated management strategies.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"85 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862386","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}

{"title":"Dual effects of tomato chlorosis virus on its whitefly vector and its host plant to facilitate viral spread","authors":"Jicheng Wang, Ying Liu, Yuxin Zhang, Penghao Qin, Jie Li, Jixing Xia, Youjun Zhang, Dong Chu","doi":"10.1007/s10340-024-01814-w","DOIUrl":"https://doi.org/10.1007/s10340-024-01814-w","url":null,"abstract":"<p>Tomato chlorosis virus (ToCV) causes widespread infections in tomatoes globally, rapidly spreading in China is closely associated with the dominant whitefly, <i>Bemisia tabaci</i> (Gennadius) Mediterranean (MED). Viruliferous whiteflies have been reported to have shown preference for healthy tomato plants and thus greatly facilitate the spread of this virus. However, the mechanism underlying the change in the host selection behavior is yet unknown. We studied the effects of ToCV infection on the volatile emissions of tomato plants to determine the main volatiles associated with host selectivity by <i>B</i>. <i>tabaci</i> MED. Gas chromatography mass spectrometry (GC-MS) analyses revealed that ToCV infection significantly altered concentrations of 11 volatile compounds. Notably, the attractive <i>p</i>-ethylacetophenone, decreased, while the repellent butylated hydroxytoluene increased. RT-qPCR showed significant expression changes in 10 odorant binding protein (OBP) genes and 11 chemosensory protein (CSP) genes in viruliferous whiteflies compared to non-viruliferous whiteflies. RNA interference indicated that silencing <i>OBP-17</i> or <i>CSP-1</i> triggered a strong repellent response from <i>B. tabaci</i> toward tomatoes. Furthermore, <i>OBP-17</i> expression rose notably with <i>p</i>-ethylacetophenone exposure, with both OBP-17 and CSP-1 exhibiting strong binding affinity for this compound, having dissociation constants of <i>K</i>_{D OBP-17} = 17.24 µmol/L and <i>K</i>_{D CSP-1} = 15.02 µmol/L, respectively. In conclusion, our study revealed dual effects of ToCV on its vectoring whitefly as well as its host plant, which together facilitate the spread of the virus. This novel insight into the epidemiological mechanisms of insect-vectored plant viruses may help to develop new strategies to control these exceedingly important agricultural pests.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"74 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857650","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}

{"title":"Reversal of practical resistance in fall armyworm to Cry1F maize: a case report on the resistance to susceptibility in Bt crops from the southeastern USA","authors":"Tiago Silva, Gregory A. Sword, Andie Miller, Jawwad A. Qureshi, Graham P. Head, Dawson D. Kerns, Juan Luis Jurat-Fuentes, James Villegas, Tyler B. Towles, Xinzhi Ni, Francis P. F. Reay-Jones, Daniel Carrillo, Donald R. Cook, Chris Daves, Michael J. Stout, Ben Thrash, Silvana V. Paula-Moraes, Shucong Lin, Bhavana Patla, Ying Niu, Caroline I. R. Sakuno, Fangneng Huang","doi":"10.1007/s10340-024-01804-y","DOIUrl":"https://doi.org/10.1007/s10340-024-01804-y","url":null,"abstract":"<p>The fall armyworm, <i>Spodoptera frugiperda</i>, is a polyphagous pest in the Americas and a target of Bt crops. A study from 2011-2013 demonstrated practical resistance of <i>S. frugiperda</i> to Cry1F maize in the southeastern coastal region of the U.S. In this study, diet-overlay and leaf tissue bioassays were conducted to determine the susceptibility to four common Bt proteins in maize (Cry1F, Cry1A.105, Cry2Ab2, and Vip3Aa) in 23 <i>S. frugiperda</i> populations collected during 2021-2022 from seven southern U.S. states, including nine populations from the southeastern coastal region. In the diet-overlay bioassays with Cry1F, 22 populations were equally or more susceptible than a susceptible reference, with a single population showing an increased susceptibility ratio (LC₅₀ of field population/LC₅₀ of the susceptible strain) of 1.97. Susceptibility ratios of the 23 populations ranged from &lt;0.15 to 4.67 for Cry1A.105 and &lt;0.12 to 5.04 for Vip3Aa. Three populations exhibited an LC₅₀ &gt;tenfold greater than the susceptible strain to Cry2Ab2. Altogether, the study did not provide evidence of practical resistance in <i>S. frugiperda</i> to the four Bt proteins. Instead, the results show that the recently collected populations were susceptible to Cry1F, Cry1A.105, and Vip3Aa. The Bt susceptibility was consistent across geographical locations and host plants. Results from the leaf tissue assays confirmed the findings of the diet-overlay bioassays. The reversed Cry1F susceptibility in <i>S. frugiperda</i> identified in this study represents the first case of documented practical resistance reverting to susceptible status in Bt crop-insect systems and thus has important implications for resistance management.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"29 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768582","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}

{"title":"The use of the juvenoid pyriproxyfen accelerates sexual maturity in mass-reared Anastrepha ludens tephritid males but reduces their tolerance to chilling and to starvation","authors":"José Arredondo, Juan F. Aguirre-Medina, José S. Meza-Hernández, Jorge Cancino, Francisco Díaz-Fleischer","doi":"10.1007/s10340-024-01813-x","DOIUrl":"https://doi.org/10.1007/s10340-024-01813-x","url":null,"abstract":"<p>The Sterile Insect Technique (SIT) is a system based on the release of millions of sterile insects to prevent the reproduction of specific pest populations. However, to improve the efficacy of the SIT, sterile males must reach sexual maturity before being released to increase their probability of mating with wild females. Treatments with juvenile hormone (JH) analogs, such as pyriproxyfen (PPF), accelerate sexual maturity in sterile <i>Anastrepha ludens</i> (Loew) (Diptera: Tephritidae) males. We hypothesized that speeding up this life-history trait can affect male resistance to stressors such as chilling and starvation. In this study, we compared some quality control parameters of flies of two different strains, selected to resist desiccation (DR) and non-selected flies (NS), treated with PPF, and subsequently exposed to starvation and pre-release chilling periods. We used males that were treated with PPF after emergence. The results showed that, from 4 to 6 days of age, DR PPF-fed males mated less than NS PPF-fed males. DR and NS males obtained a similar number of copulations at 7 days of age. After chilling, survival was higher in DR than in NS males. In addition, NS males showed a slight advantage in number of copulations when they reached 5 days of age but not at 6 and 7 days of age. Chill-coma recovery time was longer in PPF-fed flies than in control flies. Moreover, PPF-fed flies obtained less copulations after exposure to chilling at 5 days of age compared to non-chilled flies. These results indicate that sexual maturity is accelerated in PPF-fed males, especially in NS flies. However, using PPF as a pre-release treatment for <i>A. ludens</i> results in a reduction in male quality, regardless of whether they are DR or NS.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"36 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768569","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}

{"title":"Effects of classical biocontrol agents on indigenous natural enemies: reproduction in pomegranate butterfly Deudorix livia eggs by native and imported parasitoids","authors":"Abdulhamid Al-Riyami, Ian C. W. Hardy","doi":"10.1007/s10340-024-01806-w","DOIUrl":"https://doi.org/10.1007/s10340-024-01806-w","url":null,"abstract":"<p>Exotic natural enemies that are imported to control a target pest may attack non-target species or disrupt the performance of other natural enemies of the target that are already present. We evaluate possible interactions between three parasitoid species, the native <i>Telenomus nizwaensis</i> and the imported <i>Trichogramma brassicae</i> and <i>Trichogramma evanescens</i>, when presented with <i>Deudorix livia</i> host eggs under high-density laboratory conditions. <i>Deudorix livia</i> is a butterfly which is an economically damaging pest in the Omani pomegranate agro-ecosystem. Most (73.5% overall) of the observed parasitism was by <i>T. nizwaensis.</i> It performed best when presented with host eggs in the absence of either of the <i>Trichogramma</i> species. These imported species thus have some potential to disrupt suppression of the pest by the indigenous natural enemy under lower-density conditions in the field, and neither of them achieved high parasitism rates themselves (laboratory conditions: <i>T. brassicae</i> = 12.5%; <i>T. evanescens</i> = 18.5%; with no evidence for any parasitism of field-collected eggs). Future efforts in this agro-ecosystem would best be directed towards encouraging <i>T. nizwaensis,</i> rather than towards importation of <i>Trichogramma</i>. Screening for negative effects of natural enemies on the pest suppression provided by other natural enemies is recommended.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"11 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141769071","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}

{"title":"Enhancing the durability of mosquito repellent textiles through microencapsulation of lavender oil","authors":"Zeeshan Tariq, Hai-Ting Zhang, Ruo-Qing Wang, Qinghong Zeng, Xinyi Wang, Xiaolu Wang, Sheng-Qun Deng, Xiaoqin Wang","doi":"10.1007/s10340-024-01811-z","DOIUrl":"https://doi.org/10.1007/s10340-024-01811-z","url":null,"abstract":"<p>In this study, the objective was to develop a long-lasting mosquito repellent textile by synthesizing silk-based lavender oil microcapsules and applying them to cotton fabric. Lavender oil, derived from <i>Lavandula angustifolia</i>, was chosen as the plant-based material. The microcapsules’ morphology and the fabric’s surface were examined using optical and scanning electron microscopes. Dynamic light scattering was utilized to measure the capsule size and zeta potential. The mosquito repellent efficacy was evaluated through cage tests before and after multiple wash cycles and after exposure to different environments. A cytotoxicity assay was conducted on functionalized fabrics in order to assess their biocompatibility. Additionally, comfort properties such as breathability and water absorbency were assessed and compared to a control fabric. The results indicated that a higher concentration of lavender oil microcapsules (15 wt%) on the fabric exhibited excellent mosquito repellent efficacy (95.7%) prior to washing, which remained effective as 84.5% even after 40 washes. Furthermore, the functionalized fabric maintained its repellent properties following exposure to temperatures of 25 °C and 37 °C for 4 weeks. The cytotoxicity results indicated that the functionalized fabric exhibited non-toxic properties toward L929 cells, thereby confirming its favorable biocompatibility. This study successfully demonstrated the synthesis and application of silk-based lavender oil microcapsules on textiles, resulting in highly durable mosquito repellent fabrics effective against <i>Aedes aegypti</i> mosquitoes. These findings highlight the potential of this eco-friendly approach for developing effective and long-lasting mosquito repellent textiles.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"28 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755266","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}

{"title":"Arsenophonus and Wolbachia-mediated insecticide protection in Nilaparvata lugens","authors":"Huiming Liu, Dongxiao Zhao, Hongtao Niu, Zhichun Zhang, Na Wang, Xiangdong Liu, Huifang Guo","doi":"10.1007/s10340-024-01810-0","DOIUrl":"https://doi.org/10.1007/s10340-024-01810-0","url":null,"abstract":"<p>While symbiont infections in invertebrates are widespread, their role in protecting hosts against natural enemies and chemical insecticides remains incompletely understood. Our study investigates the protective effects of <i>Arsenophonus</i> and <i>Wolbachia</i>, either individually or in co-infection, on <i>Nilaparvata lugens</i> against chemical insecticides. Our findings reveal that both <i>Arsenophonus</i> and <i>Wolbachia</i> confer protection against chemical insecticides, including triflumezopyrim, nitenpyram, and dinotefuran. However, these symbionts do not show protective effects against pymetrozine. <i>Wolbachia</i> infection leads to the up-regulation of the glutathione S-transferase (GST) gene <i>GSTm2</i> and the P450 gene <i>CYP6AY1</i>. Uniquely, co-infection results in the up-regulation of the P450 gene <i>CYP18A1</i>. Furthermore, the stability of the co-infection is not constant, with its frequency decreasing from 93.3 to 73.1% over a nine-generation passage, while single infections remain consistently high (&gt; 95%). Our study suggests that <i>Wolbachia</i> and <i>Arsenophonus</i>, both individually and in co-infection, provide protection against two commonly used chemical insecticides in <i>N. lugens</i>.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"6 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141730524","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}

{"title":"Guardians within: entomopathogenic fungi-driven antibiosis and compensatory growth combines to reduce the damage of herbivores to melon plants","authors":"Meelad Yousef-Yousef, Fabián García-Espinoza, María José García del Rosal, Enrique Quesada-Moraga","doi":"10.1007/s10340-024-01812-y","DOIUrl":"https://doi.org/10.1007/s10340-024-01812-y","url":null,"abstract":"<p>Endophytic and rhizosphere-competent entomopathogenic fungi (EF) are important plant bodyguards, although the mechanisms underlying this phenomenon are poorly understood. Therefore, we aimed to elucidate the roles of antibiosis (lethal and sublethal effects), and potential growth compensation (in response to leaf injury) in melon plants exposed to cotton leafworm. Plants were inoculated with one of three EF strains (EAMa 0158-Su <i>Metarhizium brunneum</i> strain or EABb 04/01-Tip and EABb 01/33-Su <i>Beauveria bassiana</i> strains) by either foliar spray, seed dressing or soil drenching and then challenged with either multiple short-term, or single long-term <i>Spodoptera littoralis</i> larval infestation. Endophytic colonization and relative expression of plant defense genes were tracked using molecular techniques alongside evaluation of antibiosis effects on <i>S. littoralis</i> and plant tolerance to larval-induced leaf injuries. Inoculated plants exhibited antibiosis and potential growth compensation in responses to various <i>S. littoralis</i> challenges, which resulted in increased fresh and dry weight, chlorophyll content, number of secondary branches and stem diameter. Furthermore, up-regulation in the relative expression of ethylene (<i>ACO1</i>, <i>ACO3</i>, <i>EIN2</i>, <i>EIN3</i>) and jasmonic acid (<i>LOX2</i>)-related genes were observed, with the endophytic <i>B. bassiana</i>- induction of ethylene and jasmonic acid production being higher in <i>S. littoralis</i> infested plants. Our findings strongly confirm the EF multifunctionality and the involvement of the Endophytic EF triggered melon defensive system induction in the antibiosis and compensatory growth to protect melon plants from pest damage.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"69 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141730525","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}

{"title":"Genome-wide exploration of metabolic-based pyrethroid resistance mechanism in Helicoverpa armigera","authors":"Juil Kim, Md-Mafizur Rahman, Changhee Han, Jungwon Jeon, Min Kwon, Si Hyeock Lee, Celso Omoto","doi":"10.1007/s10340-024-01797-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01797-8","url":null,"abstract":"<p>To elucidate the deltamethrin resistance mechanism in <i>Helicoverpa armigera</i>, we explored mutations at the deltamethrin target site, genomic level variations between insecticide-susceptible and -resistant strains, and differences in gene expression patterns between the strains. Known pyrethroid resistance-associated point mutations within the voltage-gated sodium channel were undetected in the cDNA and gDNA of resistant strains or field populations. The whole-genome de novo assembly of a Korean-resistant strain was performed (GCA_026262555.1), and 13 genomes of susceptible and resistant individuals were re-sequenced using field populations. Approximately 3,369,837 variants (SNPs and indels) were compared with our reference <i>H. armigera</i> genome, and 1,032,689 variants were identified from open reading frames. A resistance-specific CYP3 subfamily gene with five variants (CYP321A1v1–v5) was identified in the resistant strains, indicating the potential role of these variants in resistance. RNA-seq analysis identified 36,720 transcripts from 45 Illumina RNA-seq datasets of the fatbody, gut, and the rest of the body. Differential gene expression analysis revealed some differently overexpressed detoxification enzyme genes in the resistant strains, particularly cytochrome P450 genes. This finding was consistent with the results of bioassay tests using PBO-based synergists that inhibit enzymes belong to cytochrome P450 family, further supporting the role of detoxification enzymes in resistance. Therefore, <i>H. armigera</i> may acquire deltamethrin resistance through a combination of actions, including the overexpression of various detoxification enzymes, such as CYP321A5 identified in this study may serve as a basis for understanding insecticide resistance at the molecular level and can be applied as diagnostic markers for resistance.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"31 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726257","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}

{"title":"Sex-biased juvenile hormone and gene expression underlie sex difference of stress resistance in the American cockroach","authors":"Fangfang Liu, Shudian Zhang, Ping Chen, Wei Tang, Xiaoyi Chen, Yingting Wu, Sishi Xia, Diqi Peng, Zhengyi Shao, Qin Li, Yuqing Liu, Xiaoshuai Zhang, Shiming Zhu","doi":"10.1007/s10340-024-01819-5","DOIUrl":"https://doi.org/10.1007/s10340-024-01819-5","url":null,"abstract":"<p>Sexually dimorphic traits are prevalent throughout the animal kingdom, extending to insects. In addition to sex-biased gene expression networks, these traits often involve variations in hormone levels. Juvenile hormone (JH), which is synthesized by corpora allata (CA), regulates development and reproduction in insects. However, there is limited understanding regarding sex-biased gene expression in CA and the sexually dimorphic functions of JH. We discovered sexual dimorphism in JH levels in cockroaches. To explore the underlying mechanism, we analyzed RNA-sequencing data from CA tissues in the adult females and males of the American cockroach, <i>Periplaneta americana</i>. Our investigation revealed significant variation in sex-biased gene expression, with female-biased genes primarily involved in cytochrome P450, glutathione S-transferase and peroxidase pathways, associating with resistance to environmental stress. Notably, exposure to the insecticide imidacloprid, injection of <i>Escherichia coli</i> and H₂O₂ led to a higher mortality rate in males, whereas females exhibited resistance. Importantly, the application of the JH analog methoprene following the injection of <i>E. coli</i> and H₂O₂ rescued survival and the expression of stress response-related genes in males. Furthermore, these stressors resulted in reduced JH biosynthesis in males, while females remained unaffected. In summary, our results reveal that sexually dimorphic JH levels and gene expression modulate stress responses in <i>P. americana</i>. These findings shed light on sex-specific responses to environmental stress, offering tailored strategies for pest control based on gender.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"19 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726258","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}