Journal of Chemical Ecology最新文献_第9页

Sex Pheromone of the Azalea Mealybug: Absolute Configuration and Kairomonal Activity 杜鹃蚧的性信息素：绝对配置和气孔活性

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-03 DOI: 10.1007/s10886-024-01473-2

Yuma Sugawara, Hiromitsu Inoue, Satoshi Toda, Jun Tabata

{"title":"Sex Pheromone of the Azalea Mealybug: Absolute Configuration and Kairomonal Activity","authors":"Yuma Sugawara, Hiromitsu Inoue, Satoshi Toda, Jun Tabata","doi":"10.1007/s10886-024-01473-2","DOIUrl":"https://doi.org/10.1007/s10886-024-01473-2","url":null,"abstract":"The sex pheromone of the azalea mealybug, Crisicoccus azaleae (Tinsley, 1898) (Hemiptera: Pseudococcidae), includes esters of a methyl-branched medium-chain fatty acid, ethyl and isopropyl (E)-7-methyl-4-nonenoate. These compounds are exceptional among mealybug pheromones, which are commonly monoterpenes. Determination of the absolute configuration is challenging, because both chromatographic and spectrometric separations of stereoisomers of fatty acids with a methyl group distant from the carboxyl group are difficult. To solve this problem, we synthesized the enantiomers via the Johnson–Claisen rearrangement to build (E)-4-alkenoic acid by using (R)- and (S)-3-methylpentanal as chiral blocks, which were readily available from the amino acids L-(+)-alloisoleucine and L-(+)-isoleucine, respectively. Each pure enantiomer, as well as the natural pheromone, was subsequently derivatized with a highly potent chiral labeling reagent used in the Ohrui–Akasaka method. Through NMR spectral comparisons of these derivatives, the absolute configuration of the natural pheromone was determined to be S. Field-trap bioassays showed that male mealybugs were attracted more to (S)-enantiomers and preferred the natural stereochemistry. Moreover, the synthetic pheromones attracted Anagyrus wasps, indicating that the azalea mealybug pheromone has kairomonal activity.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139679305","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}

引用次数: 0

Associational Effects of Desmodium Intercropping on Maize Resistance and Secondary Metabolism 玉米抗性和次生代谢与苔草属植物间作的关联效应

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-02 DOI: 10.1007/s10886-024-01470-5

Ethan Bass, Daniel M. Mutyambai, Charles A. O. Midega, Zeyaur R. Khan, André Kessler

{"title":"Associational Effects of Desmodium Intercropping on Maize Resistance and Secondary Metabolism","authors":"Ethan Bass, Daniel M. Mutyambai, Charles A. O. Midega, Zeyaur R. Khan, André Kessler","doi":"10.1007/s10886-024-01470-5","DOIUrl":"https://doi.org/10.1007/s10886-024-01470-5","url":null,"abstract":"Intercropping is drawing increasing attention as a strategy to increase crop yields and manage pest pressure, however the mechanisms of associational resistance in diversified cropping systems remain controversial. We conducted a controlled experiment to assess the impact of co-planting with silverleaf Desmodium (Desmodium uncinatum) on maize secondary metabolism and resistance to herbivory by the spotted stemborer (Chilo partellus). Maize plants were grown either in the same pot with a Desmodium plant or adjacent to it in a separate pot. Our findings indicate that co-planting with Desmodium influences maize secondary metabolism and herbivore resistance through both above and below-ground mechanisms. Maize growing in the same pot with a Desmodium neighbor was less attractive for oviposition by spotted stemborer adults. However, maize exposed only to above-ground Desmodium cues generally showed increased susceptibility to spotted stemborer herbivory (through both increased oviposition and larval consumption). VOC emissions and tissue secondary metabolite titers were also altered in maize plants exposed to Desmodium cues, with stronger effects being observed when maize and Desmodium shared the same pot. Specifically, benzoxazinoids were strongly suppressed in maize roots by direct contact with a Desmodium neighbor while headspace emissions of short-chain aldehydes and alkylbenzenes were increased. These results imply that direct root contact or soil-borne cues play an important role in mediating associational effects on plant resistance in this system.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139667609","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}

引用次数: 0

Prolonged Exposure to Plant Volatiles does not Significantly Affect Pban Expression and Mating Behavior in Diamondback Moth [Plutella Xylostella (Lepidoptera: Plutellidae)]. 长期暴露于植物挥发物不会显著影响菱背蛾的 Pban 表达和交配行为。

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-12-05 DOI: 10.1007/s10886-023-01462-x

Houjun Tian, Ruibin Xu, Heng Li, Shuo Lin, Yixin Chen, Yong Chen, Guang Yang, Hui Wei

{"title":"Prolonged Exposure to Plant Volatiles does not Significantly Affect Pban Expression and Mating Behavior in Diamondback Moth [Plutella Xylostella (Lepidoptera: Plutellidae)].","authors":"Houjun Tian, Ruibin Xu, Heng Li, Shuo Lin, Yixin Chen, Yong Chen, Guang Yang, Hui Wei","doi":"10.1007/s10886-023-01462-x","DOIUrl":"10.1007/s10886-023-01462-x","url":null,"abstract":"Herbivorous insects use plant volatiles to locate hosts, find food, and identify oviposition sites to aid survival and reproduction. Plant volatiles not only regulate the synthesis and release of sex pheromones in insects, but also help them in the search and orientation of sources of sex pheromones. However, after prolonged exposure to plant volatiles, the changes mediating the mating behavior of diamondback moth (DBM) [Plutella xylostella (L.) (Lepidoptera: Plutellidae)] are unclear. DBMs treated with allyl isothiocyanate, a volatile from cruciferous vegetables, did not show improved rates of mating with a limited effect on mating rhythm. This treatment inhibited mating behaviors in 3-day-old DBMs and decreased mating duration in 5-day-old DBMs. After prolonged exposure to allyl isothiocyanate, the total mating duration of DBM was not significantly different from that after prolonged exposure to n-hexane (control). The longest mating duration after emergence in DBM after prolonged exposure to allyl isothiocyanate was delayed by 1 day compared with exposure to n-hexane. Prolonged exposure to plant volatiles intensified the response behavior of DBM to sex pheromones. However, the amount of Z11-16: Ald, a major component of the sex pheromone blend exhibited no change in female pheromone glands. Pheromone biosynthesis activating neuropeptide gene (PBAN) was down-regulated in DBMs after prolonged exposure to plant volatiles. These findings suggest that prolonged exposure (6 h) to plant-derived volatiles have little effect on the mating behavior of DBM. This study provides practical guidance for applying phytochemicals in pest control by regulating insect behavior.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138487630","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}

引用次数: 0

Sequential Isolation of Essential Oils Repellent to the Red Palm Weevil Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae). 按顺序分离驱除红掌象鼻虫 Rhynchophorus ferrugineus Olivier（鞘翅目：卷须科）的精油。

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-09-14 DOI: 10.1007/s10886-023-01451-0

Anat Levi-Zada, Sara Steiner, Orna Ben-Aziz, Daniela Fefer

{"title":"Sequential Isolation of Essential Oils Repellent to the Red Palm Weevil Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae).","authors":"Anat Levi-Zada, Sara Steiner, Orna Ben-Aziz, Daniela Fefer","doi":"10.1007/s10886-023-01451-0","DOIUrl":"10.1007/s10886-023-01451-0","url":null,"abstract":"The push-pull approach using semiochemicals in pest control requires both an attractant and a repellent. Many previous studies have arbitrarily tested one or more known insect repellents or plant essential oils (EOs) hoping to find repellents of an insect pest. We used a comprehensive approach that synergistically tests in the field numerous natural volatiles from commercial EOs to identify repellents of the red palm weevil Rhynchophorus ferrugineus (Coleoptera: Curculionidae), a worldwide pest of palms and date palms. Volatiles from 79 EOs in slow-release devices were divided into five groups and tested in traps with attractive pheromone compared to traps with pheromone alone. EO-treatment groups exhibiting repellency due to significant trap shutdown, were further subdivided into subgroups of four EOs each and tested further. Two groups of four EOs (cypress, desert wormwood, elemi, and Eucalyptus citriodora) and (niaouli, nutmeg, oregano, and orange sweet), or their corresponding mixtures of major volatiles, caused pheromone trap reductions of up to 92%. Further tests showed that seven of the eight EOs are similarly repellent as the corresponding subgroup. This systematic approach of successively testing sub-fractions of EOs in the field for trap shutdown should be useful to identify repellents of other insect pests of crops.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10236583","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}

引用次数: 0

A Mechanism to Transform Complex Salicinoids with Caffeoylquinic Acids in Lepidopteran Specialist Herbivores (Notodontidae). 鳞翅目专科食草动物(齿齿动物科)复杂水杨碱类转化为咖啡酰奎宁酸的机制。

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-11-30 DOI: 10.1007/s10886-023-01464-9

Florian Schnurrer, Yoko Nakamura, Christian Paetz

{"title":"A Mechanism to Transform Complex Salicinoids with Caffeoylquinic Acids in Lepidopteran Specialist Herbivores (Notodontidae).","authors":"Florian Schnurrer, Yoko Nakamura, Christian Paetz","doi":"10.1007/s10886-023-01464-9","DOIUrl":"10.1007/s10886-023-01464-9","url":null,"abstract":"Larvae of the Salicaceae-adapted Notodontidae have developed a unique mechanism to metabolize the chemical defenses of their Salicaceae host plants. Salicinoids and salicortinoids are enzymatically transformed into salicyloyl, benzoyl and mixed salicyloyl-benzoyl quinates. The source of quinates and benzoates was previously unknown. To elucidate the origin of quinate and benzoate in the metabolic end-products, we fed Cerura vinula caterpillars with 13C-labelled poplar defense compounds. Caffeoylquinic acids (CQAs), such as chlorogenic acid, neochlorogenic acid and their methyl esters, were identified as the source of quinates in the caterpillar's metabolism. Benzoyl substituents in the quinate end-products were found to originate from compounds such as tremulacin or trichocarpin. Salicaceae-adapted Notodontidae caterpillars have the ability to overcome their host plant's chemical defense by metabolizing CQAs and salicinoids, both abundant defense compounds in Salicacea plants, by a strategy of transformation and recombination. We believe that our study opens up avenues for understanding salicortinoid biotransformation at the enzymatic level.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10991022/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460160","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}

引用次数: 0

Mixtures of Milkweed Cardenolides Protect Monarch Butterflies against Parasites. Milkweed Cardenolides的混合物保护帝王蝶免受寄生虫的侵害。

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-11-06 DOI: 10.1007/s10886-023-01461-y

Mackenzie Hoogshagen, Amy P Hastings, Joselyne Chavez, Marissa Duckett, Rayshaun Pettit, Andrew P Pahnke, Anurag A Agrawal, Jacobus C de Roode

{"title":"Mixtures of Milkweed Cardenolides Protect Monarch Butterflies against Parasites.","authors":"Mackenzie Hoogshagen, Amy P Hastings, Joselyne Chavez, Marissa Duckett, Rayshaun Pettit, Andrew P Pahnke, Anurag A Agrawal, Jacobus C de Roode","doi":"10.1007/s10886-023-01461-y","DOIUrl":"10.1007/s10886-023-01461-y","url":null,"abstract":"Plants have evolved a diverse arsenal of defensive secondary metabolites in their evolutionary arms race with insect herbivores. In addition to the bottom-up forces created by plant chemicals, herbivores face top-down pressure from natural enemies, such as predators, parasitoids and parasites. This has led to the evolution of specialist herbivores that do not only tolerate plant secondary metabolites but even use them to fight natural enemies. Monarch butterflies (Danaus plexippus) are known for their use of milkweed chemicals (cardenolides) as protection against vertebrate predators. Recent studies have shown that milkweeds with high cardenolide concentrations can also provide protection against a virulent protozoan parasite. However, whether cardenolides are directly responsible for these effects, and whether individual cardenolides or mixtures of these chemicals are needed to reduce infection, remains unknown. We fed monarch larvae the four most abundant cardenolides found in the anti-parasitic-milkweed Asclepias curassavica at varying concentrations and compositions to determine which provided the highest resistance to parasite infection. Measuring infection rates and infection intensities, we found that resistance is dependent on both concentration and composition of cardenolides, with mixtures of cardenolides performing significantly better than individual compounds, even when mixtures included lower concentrations of individual compounds. These results suggest that cardenolides function synergistically to provide resistance against parasite infection and help explain why only milkweed species that produce diverse cardenolide compounds provide measurable parasite resistance. More broadly, our results suggest that herbivores can benefit from consuming plants with diverse defensive chemical compounds through release from parasitism.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482034","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}

引用次数: 0

Olfactory Mating Signals in the Migratory Locust Locusta migratoria. 迁徙蝗虫的嗅觉交配信号。

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-10-18 DOI: 10.1007/s10886-023-01456-9

Anjana P Unni, Markus Knaden, Bill S Hansson

{"title":"Olfactory Mating Signals in the Migratory Locust Locusta migratoria.","authors":"Anjana P Unni, Markus Knaden, Bill S Hansson","doi":"10.1007/s10886-023-01456-9","DOIUrl":"10.1007/s10886-023-01456-9","url":null,"abstract":"Swarming locusts cause huge plagues across the world threatening food production. Before swarms form, locust populations exhibit a dramatic phase change from a solitary to a gregarious phase. The cause of this phase change is a complicated interplay of conspecific and environmental cues and is, especially for one of the major pests, the migratory locust Locusta migratoria, still not well understood. Here we study the behavior of both solitary and gregarious L. migratoria towards the headspace odors of conspecifics. As we do not find a general attraction of gregarious animals to the headspace of gregarious conspecifics, swarm formation does not seem to be mainly governed by olfactory aggregation cues. When testing for potential mating signals, we observe that the headspace of virgin gregarious females is highly attractive only towards virgin males of the same phase, while mated gregarious males and solitary males, regardless of their mating state, do not become attracted. Interestingly, this phase-specific attraction goes along with the finding, that mating behavior in experiments with inter-phasic pairings is extremely rare. Our data suggest that odor emissions in L. migratoria play a significant role in a mating context.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10991065/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41235606","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}

引用次数: 0

The Influence of Substance Properties on Arthropod Chemical Defenses: A Meta-Analysis. 物质特性对节肢动物化学防御的影响：元分析

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2024-02-01 Epub Date: 2023-12-22 DOI: 10.1007/s10886-023-01457-8

Ximenes Nathalia, Moraes Vinicius, Rocha Danilo Brito, Gawryszewski Felipe, Willemart Rodrigo

{"title":"The Influence of Substance Properties on Arthropod Chemical Defenses: A Meta-Analysis.","authors":"Ximenes Nathalia, Moraes Vinicius, Rocha Danilo Brito, Gawryszewski Felipe, Willemart Rodrigo","doi":"10.1007/s10886-023-01457-8","DOIUrl":"10.1007/s10886-023-01457-8","url":null,"abstract":"Among defenses against predation, chemical defenses are possibly the most studied. However, when addressing the effectiveness of those chemical defenses, previous studies did not include properties of the chemical substances themselves. Lipophilicity, for instance, may facilitate crossing membranes, and boiling point may define the duration of the substances in the air. Moreover, other variables may also be relevant: the predator taxon; the prey model chosen to conduct experiments; whether the prey is presented grouped or not in experiments; and whether the chemical defense is a mixture of many substances or only one. To understand how those factors influence chemical defenses' effectiveness, we conducted a multilevel meta-analysis with 43 studies (127 effect sizes), accounting for different types of dependence. We used Akaike Information Criterion (AICc) to select the best model. The model with the lowest AICc value included only the boiling point, which defines how quickly a chemical substance volatilizes. This model indicated that the most effective chemical defenses had lower boiling point values, i.e., higher volatility. Moreover, we did not find chemicals with very low boiling points, suggesting there might be an optimum range of volatility. Other models, including the intercept-only model, were also recovered among the best models, therefore further studies are needed to confirm the relationship between volatility and chemical defenses' effectiveness. Our results highlight the value of incorporating physicochemical properties in the ecological and evolutionary study of chemical defense.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138829901","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}

引用次数: 0

Individual Variation in Male Pheromone Production in Xylocopa sonorina Correlates with size and Gland Color Xylocopa sonorina 雄性信息素分泌的个体差异与体型和腺体颜色有关

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2023-12-18 DOI: 10.1007/s10886-023-01466-7

Andrew J. Goffinet, Kathy Darragh, Nicholas Saleh, Madeleine M. Ostwald, Stephen L. Buchmann, Santiago R. Ramirez

{"title":"Individual Variation in Male Pheromone Production in Xylocopa sonorina Correlates with size and Gland Color","authors":"Andrew J. Goffinet, Kathy Darragh, Nicholas Saleh, Madeleine M. Ostwald, Stephen L. Buchmann, Santiago R. Ramirez","doi":"10.1007/s10886-023-01466-7","DOIUrl":"https://doi.org/10.1007/s10886-023-01466-7","url":null,"abstract":"Sex pheromones are species-specific chemical signals that facilitate the location, identification, and selection of mating partners. These pheromones can vary between individuals, and act as signals of mate quality. Here, we investigate the variation of male pheromones in the mesosomal glands of the large carpenter bee Xylocopa sonorina, within a Northern California population. We tested the hypothesis that morphological traits are correlated with the observed variation in chemical blend composition of these bees. We also conducted behavioral assays to test whether these male pheromones act as long-range attractants to conspecifics. We found that larger males with darker mesosomal glands have a higher pheromone amount in their glands. Our analysis also suggests that this pheromone blend functions as a long-range attractant to both males and females. We show that both male body size and sexual maturation are important factors influencing pheromone abundance, and that this pheromone blend acts as a long-range attractant. We hypothesize that this recorded variation in male pheromone could be important for female choice.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138741230","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}

引用次数: 0

Fecal Deployment: An Alternative Way of Defensive Host Plant Cardenolide Use by Lilioceris merdigera Larvae 排泄物部署：Lilioceris merdigera 幼虫使用寄主植物硬酯类化合物的另一种防御方式

IF 2.3 3区环境科学与生态学

Journal of Chemical Ecology Pub Date : 2023-12-07 DOI: 10.1007/s10886-023-01465-8

Michael Baum, Susanne Dobler

{"title":"Fecal Deployment: An Alternative Way of Defensive Host Plant Cardenolide Use by Lilioceris merdigera Larvae","authors":"Michael Baum, Susanne Dobler","doi":"10.1007/s10886-023-01465-8","DOIUrl":"https://doi.org/10.1007/s10886-023-01465-8","url":null,"abstract":"The brilliant red Lilioceris merdigera (Coleoptera, Chrysomelidae) can spend its entire life cycle on the cardenolide-containing plant Convallaria majalis (lily of the valley) and forms stable populations on this host. Yet, in contrast to many other insects on cardenolide-containing plants L. merdigera does not sequester these plant toxins in the body but rather both adult beetles and larvae eliminate ingested cardenolides with the feces. Tracer feeding experiments showed that this holds true for radioactively labeled ouabain and digoxin, a highly polar and a rather apolar cardenolide. Both compounds or their derivatives are incorporated in the fecal shields of the larvae. The apolar digoxin, but not the polar ouabain, showed a deterrent effect on the generalist predatory ant Myrmica rubra, which occurs in the habitat of L. merdigera. The deterrent effect was detected for digoxin both in choice and feeding time assays. In a predator choice assay, a fecal shield derived from a diet of cardenolide-containing C. majalis offered L. merdigera larvae better protection from M. rubra than one derived from non-cardenolide Allium schoenoprasum (chives) or no fecal shield at all. Thus, we here present data suggesting a new way how insects may gain protection by feeding on cardenolide-containing plants.","PeriodicalId":15346,"journal":{"name":"Journal of Chemical Ecology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138552555","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}

引用次数: 0