Journal of Chemical Ecology最新文献

{"title":"Microbes Isolated from Ailanthus altissima Leaves Contribute to Samia cynthia's Tolerance to the Toxic Quassinoid Diterpenoid.","authors":"Jiaming Zhang, Juan Hua, Yangyang Wang, Jiayi Liu, Zhen Yang, Yanqun Liu, Shihong Luo","doi":"10.1007/s10886-026-01749-9","DOIUrl":"10.1007/s10886-026-01749-9","url":null,"abstract":"<p><p>Plants participate in complex interactions with microorganisms, co-evolving through specific chemical signaling pathways. Notably, some microorganisms associated with plants may also be acquired by herbivorous insects and potentially contribute to the insect's fitness. Here, we found that when the toxic plant, Ailanthus altissima, is consumed by silkworms (Samia cynthia), it can significantly alter the assembly of microbial community in S. cynthia midgut, particularly affecting members of Enterobacteriaceae and Bacillaceae families. And a main defensive quassinoid diterpenoid 6α-3,4-epoxy-tigloyloxychaparrin (6α-ETC) present in A. altissima leaves was found to promote the growth of Priestia sp. WY-1 (Bacillaceae). Furthermore, Salmonella sp. WY-7, WY-10 (Enterobacteriaceae), and Pseudomonas sp. WY-5 (Pseudomonadaceae), which were also isolated from S. cynthia midgut, demonstrated the ability to degrade 6α-ETC to a certain extent. Surprisingly, after PCR verification, that the midgut bacteria identified as Priestia sp. and Pseudomonas sp. could be traced back to their origin in A. altissima leaves. These results suggest that S. cynthia can acquire bacteria from A. altissima leaves, and that some of these shared microbes in the families of Enterobacteriaceae, Pseudomonadaceae, and Bacillaceae could contribute to the detoxification of quassinoid diterpenoid, potentially aiding the insect's tolerance to its toxic host plant. This study provides a foundation for studying the interactions between microorganisms, plants and insects.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148793755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Common Regulatory Architecture Shapes Queen Chemical Signals Across Multiple Exocrine Sites.","authors":"Margarita Orlova, Etya Amsalem","doi":"10.1007/s10886-026-01750-2","DOIUrl":"10.1007/s10886-026-01750-2","url":null,"abstract":"<p><p>Insects communicate identity, health, and reproductive state through diverse chemicals secreted from multiple glands and production sites. Although these exocrine sites often contain a similar profile of compounds, they are usually studied in isolation. Here, we tested the hypothesis that changes in the identity and abundance of chemical signals from different exocrine sites within the same individual are coordinated, suggesting they may be governed by shared regulatory processes. To do so, we quantified the cuticular lipids and the glandular secretion of three exocrine glands in bumble bee queens across three key life stages: unmated newly-emerged queen (gynes), young founders shortly after nest initiation and old founders towards the end of the life cycle. We found that as queens aged and transitioned into reproduction, they produced hydrocarbons and esters with shorter chain length and shifted toward a greater investment in alkenes over alkanes across several exocrine sites. Terpenoid-, acetate- and wax-esters were produced across multiple exocrine sites with partially overlapping patterns. These remarkably coordinated shifts across glands that differ in both function and anatomical origin suggest that the overall chemical profile of an insect is coordinated across glandular sites and may convey more biologically relevant information than any single glandular secretion alone. Insect chemical communication is likely shaped by a shared regulatory architecture or coordinated responses to environmental conditions, highlighting a unifying mechanism underlying complex social signals.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13476309/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148758074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Individual Variation in the Chemical Profiles of Odorous Male Bat Crusts.","authors":"Mariana Muñoz-Romo, Candelario Rodriguez, Gregg Cohen, Hermógenes Fernández-Marín, Rachel A Page","doi":"10.1007/s10886-026-01744-0","DOIUrl":"10.1007/s10886-026-01744-0","url":null,"abstract":"<p><p>Visually conspicuous sexually dimorphic traits such as body size, coloration, weapons, and ornaments are less effective in nocturnal mammals, favoring the evolution of signals in alternative sensory modalities. Acoustic and chemical signals, in contrast, function well in low-light environments, and chemical cues in particular may act as honest indicators of individual quality, as physiological condition and immune responses can alter odor profiles. Reproductively active male fringe-lipped bats, Trachops cirrhosus, exhibit a sexually dimorphic forearm crust characterized by a strong odor and seasonal enlargement coincident with female fertility. Crust size is positively correlated with testosterone levels, and males with larger crusts are more frequently found roosting with multiple females, suggesting a role in sexual signaling. Previous work identified six major chemical components of the crust. Here, we evaluated inter-individual variation in both chemical composition and compound concentrations of the crust. Gas chromatography - mass spectrometry (GC-MS) analyses revealed twelve volatile organic compounds detected in crust samples, with individual males containing an average of 7 ± 3 chemical compounds. Chemical composition and chemical concentrations varied substantially among individuals, indicating that male crusts are not composed by a determined set or standardized ratios of compounds. Instead, chemical profiles were highly individualized. Crust size was positively associated with both chemical diversity and compound abundance. Larger crusts (> 10 mg) contained more compounds and higher overall concentrations than smaller crusts. Cholesterol and Cholest-7-en-3-ol were the most consistently detected compounds across males. Five of six previously reported compounds were confirmed. Concentrations of individual compounds differed by several orders of magnitude among males, and some compounds were absent in certain individuals. These results indicate pronounced individual chemical variability in male forearm crusts, supporting the hypothesis that this trait functions as a complex and individualized chemical signal potentially relevant to mate choice and sexual selection.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148723227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drosophila melanogaster Fly Odors Alone are not Sufficient to Attract other Flies.","authors":"Anjana Pisharody Unni, Karen Rihani, Silke Sachse, Bill S Hansson, Markus Knaden","doi":"10.1007/s10886-026-01747-x","DOIUrl":"10.1007/s10886-026-01747-x","url":null,"abstract":"<p><p>Pheromone-mediated behaviors are crucial for the survival and reproduction of Drosophila melanogaster, governing activities such as courtship, mating, and aggression. While many studies have focused on short-range interactions involving direct contact between flies, the role of olfactory cues alone in this attraction remains poorly understood. In this study, we investigated the behavioral responses of virgin male and female D. melanogaster to conspecific headspace using a Y-maze. We tested fly responses under various environmental conditions (e.g., in the presence or absence of food odors and with or without social isolation of the tested animals before the experiments). Finally, we repeated some of the experiments in a still-air trap assay. Our results suggest that fly odors may play only a limited role in mate-seeking behavior in D. melanogaster.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13447572/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148678883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fruit Damage Alters Headspace Volatile Chemistry and Host Attraction in Drosophila suzukii.","authors":"Corey Reese, Nabil Killiny, Lukasz L Stelinski","doi":"10.1007/s10886-026-01748-w","DOIUrl":"10.1007/s10886-026-01748-w","url":null,"abstract":"<p><p>Spotted-wing drosophila, Drosophila suzukii (Diptera: Drosophilidae), is a destructive pest of ripening berries and stone fruits. D. suzukii is attracted to ripening fruit volatiles, allowing it to occupy a distinct ecological niche from other Drosophila species. Ripening fruit volatiles act as relatively specific cues, which can be leveraged for pest management. Here, we tested whether volatiles from damaged host fruit serve as attractive adult host-finding cues. Using multivariate analysis, we characterized the headspace of mechanically damaged or undamaged blueberries and strawberries, finding distinct volatile organic chemical profiles. In no-choice assays, D. suzukii adults responded similarly between damaged and undamaged treatments at 24 and 48 h; however, when presented with a choice, adults were more strongly attracted to damaged than undamaged fruit volatiles. Adults exhibited a preference for volatiles from an individual damaged fruit over those from many undamaged fruit, despite higher total volatile release by the undamaged treatment as quantified by chromatography. In oviposition assays, females held in constant darkness laid significantly more eggs on damaged than undamaged fruit, whereas those exposed to a light cycle showed no preference. Infestation by early-instar D. suzukii induced a volatile profile distinct from mechanical damage, which attracted females but not males. Together, these results suggest that adult D. suzukii exhibit a preference for the specific ratio of volatiles from mechanically damaged fruit, while additional sensory inputs likely modulate subsequent behavioral decisions. Practically, damaged fruit volatile profiles identified here provide a chemical basis for developing more attractive lures to improve D. suzukii control and monitoring.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148678896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reviewing the role of microbial volatile organic compounds as potential oviposition elicitors for the horn fly, Haematobia irritans(Diptera: Muscidae).","authors":"Isabel Soto-Llanquitruf, Ioreni Margarita Hernández-Velázquez, Cindy S Molina-Ruiz, Ana Alicia Mutis Tejos, Consuelo Almazán, Andrés Quiroz, Javier Andrés Espinoza Maldonado, Jesús Alejandro Zamora-Briseño","doi":"10.1007/s10886-026-01746-y","DOIUrl":"10.1007/s10886-026-01746-y","url":null,"abstract":"<p><p>Haematobia irritans (L.) (Diptera: Muscidae), commonly known as the horn fly, is one of the most economically significant ectoparasites of cattle worldwide, causing substantial losses in meat, milk, and hide production. Its management has historically relied on broad-spectrum insecticides, whose overuse has driven the emergence of resistant populations and raised environmental concerns, emphasizing the urgent need to alternative, ecofriendly control strategies. A key yet underexplored aspect of horn fly biology is behind one of its characteristic behaviors, oviposition behavior: gravid females deposit eggs almost exclusively in very fresh cattle dung, a preference that diminishes rapidly with time post-defecation. Although volatile organic compounds (VOCs) from dung are known to mediate this behavior, the biological origin of these chemical cues remains poorly characterized. This review proposes that microbial volatile organic compounds (mVOCs) produced by the cattle dung microbiota-particularly anaerobic bacteria derived from the bovine rumen-are major elicitors of horn fly oviposition behavior, constituting a transkingdom chemical signaling system. By systematically cross-referencing VOCs reported in fresh cattle dung with compounds known to elicit electrophysiological and behavioral responses in H. irritans, we identified four key semiochemicals of probable microbial origin: phenol, p-cresol, indole, and α-pinene, produced by bacterial families including Enterobacteriaceae, Clostridiaceae, Paenibacillaceae, and Lactobacillaceae. The temporal decline in dung attractiveness is proposed to reflect the succession of the microbial community from anaerobic to aerobic dominance, with a concomitant shift in the mVOC profile. This hypothesis is further supported by the observation that the early developmental stages of H. irritans harbor an anaerobe-dominated microbiota. This framework may provide opportunities for the development of environmentally friendly blends for horn fly management.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148669833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species-Specific Recognition in Fig-Wasp Mutualism: The Role of Volatile Blends and Seasonal Shifts in Olfactory Responses.","authors":"Niannian Liang, Benoit Lapeyre, Ramil Kohkaew, Yongxia Jia, Magali Proffit, Hui Yu","doi":"10.1007/s10886-026-01745-z","DOIUrl":"10.1007/s10886-026-01745-z","url":null,"abstract":"<p><p>Volatile organic compounds (VOCs) mediate host recognition in the obligate fig-fig wasp mutualism, but studies on the chemical mechanisms maintaining pollinator host specificity in sympatric, phylogenetically distant fig species remain scarce. We investigated two sympatric dioecious fig species from different subgenera: Ficus hispida (pollinated by Ceratosolen solmsi marchali), and Ficus hirta (pollinated by Valisia javana), integrating behavioral assays, GC-MS, and GC-EAD to distinguish physiological perception from behavioral outcome. Both fig wasp species were attracted to host VOCs but showed species-specific responses to non-host odors: V. javana actively avoided non-host volatiles, whereas C. solmsi marchali showed no preference. GC-MS identified 44 compounds in F. hispida and 47 in F. hirta, with significant interspecific divergence (PERMANOVA, p = 0.001) but minimal seasonal variation within F. hispida. GC-EAD revealed that C. solmsi marchali perceived 15 host compounds in spring and 12 in summer; V. javana perceived 8 in spring and 5 in summer. Both species consistently perceived Linalool and 1,8-Cineole, but these ubiquitous plant volatiles alone cannot explain host specificity. Instead, specificity is likely conferred by the specific ratios in which common compounds and host-unique volatiles are combined-for example Indole and (E, E)-Cosmene in F. hispida, and α-Cedrene epoxide in F. hirta. By distinguishing perception from behavior, we show that host fidelity is maintained through species-specific VOC blends, with seasonal modulation of olfactory sensitivity further shaping pollinator responses. These findings contribute to understanding chemical communication evolution under sympatry and seasonal environmental variability.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148603470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: The Influence of Substance Properties on Arthropod Chemical Defenses: A Meta-Analysis.","authors":"Nathalia Ximenes, Vinicius Moraes, Danilo Brito Rocha, Felipe Gawryszewski, Rodrigo Willemart","doi":"10.1007/s10886-026-01741-3","DOIUrl":"10.1007/s10886-026-01741-3","url":null,"abstract":"","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148591765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Herbicide Stress Modifies Defensive, Nutritional, and Volatile Chemistry of Red Maple Cultivars Associated with Chrysobothris Attraction.","authors":"Cindy Perkovich, Melanie Eichler, Paul O'Neal, Karla M Addesso","doi":"10.1007/s10886-026-01743-1","DOIUrl":"10.1007/s10886-026-01743-1","url":null,"abstract":"<p><p>Herbicide exposure can alter plant secondary metabolism with consequences for insect host selection, yet its effects on volatile organic compound (VOC) signaling remain poorly understood. Red maple (Acer rubrum L.) is a widely planted ornamental tree frequently attacked by flatheaded borers (Chrysobothris spp.), and herbicide injury has been associated with increased borer activity. We investigated how trunk application of two commercial herbicides, one contact herbicide (pelargonic acid) and one systemic herbicide (glyphosate), influence VOC emissions and associated nutritional and defensive chemistry in two red maple cultivars differing in susceptibility to Chrysobothris. Across a four-week field experiment, foliar VOCs were quantified alongside sugars, polyphenols, and tannins, and related to borer oviposition attempts and larval success. Herbicide exposure induced compound-specific and cultivar-dependent VOC responses, with the susceptible cultivar ('Brandywine') exhibiting greater temporal variability and elevated emissions of select monoterpenes, including β-myrcene. These VOC shifts coincided with increased foliar polyphenols and trunk sugar concentrations. In contrast, the less susceptible cultivar ('Autumn Blaze') showed comparatively stable chemical profiles across treatments. Oviposition attempts and larval occurrence were concentrated on herbicide-treated 'Brandywine' trees, particularly following contact herbicide exposure. Together, these results suggest that herbicide-induced modulation of VOC signaling, coupled with changes in nutritional and defensive chemistry, may influence adult host selection, larval performance following oviposition, and ultimately enhance host suitability and apparency to Chrysobothris.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148591742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spotted Lanternfly Feeding Induces Systemic Defense Responses in Grapevines.","authors":"Sukhman Singh, Michelle Peiffer, Gary W Felton, Flor E Acevedo","doi":"10.1007/s10886-026-01742-2","DOIUrl":"10.1007/s10886-026-01742-2","url":null,"abstract":"<p><p>The spotted lanternfly (Lycorma delicatula), an invasive planthopper in the United States, threatens vineyards by reducing yield and compromising plant health, yet grapevine immune responses to its feeding remain poorly understood. This study evaluated systemic grapevine responses to spotted lanternfly feeding under varying insect densities and feeding durations. Potted Vitis vinifera cultivar Cabernet Franc vines were infested with 0, 5, 10, or 15 adults per vine for 1, 3, 5, 7, 14, 21, or 29 days, using separate plants at each time point. Leaf tissue was analyzed for chlorophyll content, polyphenol oxidase (PPO) and peroxidase (POX) activity, protein content, total phenolics, and condensed tannins. Bioassays assessed spotted lanternfly survival and weight gain on previously infested plants. Chlorophyll content declined after 21-29 days in vines infested with 15 insects. PPO activity increased throughout the experiment (except on day 7) under infestations of 10-15 insects, whereas POX activity rose after 7 days but declined after 29 days of feeding. Leaf protein content increased in vines infested with 15 insects after 7 and 29 days, and phenolic concentrations increased consistently from 7 to 29 days in vines infested with 10-15 insects. Condensed tannin concentrations were unaffected by density treatments. Bioassays showed reduced survival and weight gain of lanternflies when fed on vines previously infested with 15 insects for 29 days. Collectively, these results suggest that prolonged, high-density spotted lanternfly feeding induces coordinated, time- and density-dependent systemic grapevine defenses associated with reduced host suitability. Future studies should identify the mechanisms underlying these responses and their persistence across grapevine cultivars.</p>","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":"52 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13400602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148584542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}