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Weiming Li - One of the best experts on this subject based on the ideXlab platform.
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The evolution of (non)species-specific Pheromones
Evolutionary Ecology, 2020Co-Authors: Tyler J. Buchinger, Weiming LiAbstract:Pheromones are chemical signals that elicit innate and stereotyped responses in conspecifics, often with intricate species specificity. The remarkable diversity of Pheromones has made them particularly useful for studying the physiological and evolutionary mechanisms underlying communication. However, most discussions on Pheromone evolution focus on divergence among species and give little attention to the processes underlying overlap or cross-reaction among species. Here, we review the evolution of Pheromones with particular emphasis on the processes that yield Pheromones that are not species specific. Although costly interactions with heterospecifics exert selection for Pheromone divergence, species isolation via other chemical or multi-modal cues and temporal or spatial barriers can alleviate selection for species specificity. Likewise, common aspects of animals’ evolutionary history, physiology, and ecology can yield convergent, homologous, or otherwise cross-reacting Pheromones. We hope that our review stimulates continued research on Pheromone species specificity, which has implications for understanding their identity, function, and evolution, and predicting the ecological consequences of changing environments.
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waterborne Pheromones modulate gonadotropin inhibitory hormone levels in sea lamprey petromyzon marinus
General and Comparative Endocrinology, 2020Co-Authors: Yu Wen Chungdavidson, Ugo Bussy, Skye D Fissette, Belinda Huerta, Weiming LiAbstract:Abstract The relationships between Pheromone stimuli and neuropeptides are not well established in vertebrates due to the limited number of unequivocally identified Pheromone molecules. The sea lamprey (Petromyzon marinus) is an advantageous vertebrate model to study the effects of Pheromone exposure on neuropeptides since many Pheromone molecules and neuropeptides have been identified in this species. Sexually mature male sea lamprey release Pheromones 7α, 12α, 24-trihydroxy-5α-cholan-3-one 24-sulfate (3 keto-petromyzonol sulfate, 3kPZS) and 7α, 12α-dihydroxy-5α-cholan-3-one-24-oic acid (3-keto allocholic acid, 3kACA) that differentially regulate gonadotropin-releasing hormone (lGnRH) and steroid levels in sexually immature sea lamprey. However, the effects of these Pheromones on gonadotropin-inhibitory hormones (GnIHs), hypothalamic neuropeptides that regulate lGnRH release, are still elusive. In this report, we sought to examine the effects of waterborne Pheromones on lamprey GnIH-related neuropeptide levels in sexually immature sea lamprey. Ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) analyses revealed sex differences in GnIH-related neuropeptide levels in the brain and plasma of immature sea lamprey. Exposure to 3kPZS and 3kACA exerted differential effects on GnIH-related neuropeptide levels in both sexes, but the effects were more prominent in female brains. We conclude that sea lamprey Pheromones regulate GnIH-related neuropeptide levels in a sexually dimorphic manner.
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an anti steroidogenic inhibitory primer Pheromone in male sea lamprey petromyzon marinus
General and Comparative Endocrinology, 2013Co-Authors: Yu Wen Chungdavidson, Huiyong Wang, Mara B Bryan, Hong Wu, Nicholas S Johnson, Weiming LiAbstract:Abstract Reproductive functions can be modulated by both stimulatory and inhibitory primer Pheromones released by conspecifics. Many stimulatory primer Pheromones have been documented, but relatively few inhibitory primer Pheromones have been reported in vertebrates. The sea lamprey male sex Pheromone system presents an advantageous model to explore the stimulatory and inhibitory primer Pheromone functions in vertebrates since several Pheromone components have been identified. We hypothesized that a candidate sex Pheromone component, 7α, 12α-dihydroxy-5α-cholan-3-one-24-oic acid (3 keto-allocholic acid or 3kACA), exerts priming effects through the hypothalamic-pituitary–gonadal (HPG) axis. To test this hypothesis, we measured the peptide concentrations and gene expressions of lamprey gonadotropin releasing hormones (lGnRH) and the HPG output in immature male sea lamprey exposed to waterborne 3kACA. Exposure to waterborne 3kACA altered neuronal activation markers such as jun and jun N-terminal kinase ( JNK ), and lGnRH mRNA levels in the brain. Waterborne 3kACA also increased lGnRH-III, but not lGnRH-I or -II, in the forebrain. In the plasma, 3kACA exposure decreased all three lGnRH peptide concentrations after 1 h exposure. After 2 h exposure, 3kACA increased lGnRH-I and -III, but decreased lGnRH-II peptide concentrations in the plasma. Plasma lGnRH peptide concentrations showed differential phasic patterns. Group housing condition appeared to increase the averaged plasma lGnRH levels in male sea lamprey compared to isolated males. Interestingly, 15α-hydroxyprogesterone (15α-P) concentrations decreased after prolonged 3kACA exposure (at least 24 h). To our knowledge, this is the only known synthetic vertebrate Pheromone component that inhibits steroidogenesis in males.
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A Review of Research in Fish Pheromones
Chemical Communication in Crustaceans, 2010Co-Authors: Yu Wen Chung-davidson, Mar Huertas, Weiming LiAbstract:This review provides selected examples of several types of chemical signals and cues important for the social behavior of fish. Alarm substances evoke antipredator behaviors, typified by increased shoaling, refuging, freezing, dashing, area avoidance, and reduced foraging. Migratory Pheromones are employed by some fish species that migrate long distances to locate home streams or spawning grounds. Many fishes employ sex Pheromones to attract members of the opposite sex or to elicit spawning behavior. Steroids, prostaglandins, bile acids and amino acids have all been shown to serve as sex Pheromones in fishes. Pheromones can also be used to recognize kin and establish hierarchies. Nonspecific diet metabolites as well as specific Pheromones are important in chemical mediation of social behavior in fish. The use of Pheromones in fisheries started long before scientific proof of their existence. Sea lamprey (Petromyzon marinus) Pheromone is the first vertebrate Pheromone that has been tested in the field as a pest control agent. Other potential applications of Pheromone usage include conservation of endangered species or aquaculture. Similar approaches could also be useful for other aquatic organisms, including crustaceans.
Yu Wen Chungdavidson - One of the best experts on this subject based on the ideXlab platform.
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waterborne Pheromones modulate gonadotropin inhibitory hormone levels in sea lamprey petromyzon marinus
General and Comparative Endocrinology, 2020Co-Authors: Yu Wen Chungdavidson, Ugo Bussy, Skye D Fissette, Belinda Huerta, Weiming LiAbstract:Abstract The relationships between Pheromone stimuli and neuropeptides are not well established in vertebrates due to the limited number of unequivocally identified Pheromone molecules. The sea lamprey (Petromyzon marinus) is an advantageous vertebrate model to study the effects of Pheromone exposure on neuropeptides since many Pheromone molecules and neuropeptides have been identified in this species. Sexually mature male sea lamprey release Pheromones 7α, 12α, 24-trihydroxy-5α-cholan-3-one 24-sulfate (3 keto-petromyzonol sulfate, 3kPZS) and 7α, 12α-dihydroxy-5α-cholan-3-one-24-oic acid (3-keto allocholic acid, 3kACA) that differentially regulate gonadotropin-releasing hormone (lGnRH) and steroid levels in sexually immature sea lamprey. However, the effects of these Pheromones on gonadotropin-inhibitory hormones (GnIHs), hypothalamic neuropeptides that regulate lGnRH release, are still elusive. In this report, we sought to examine the effects of waterborne Pheromones on lamprey GnIH-related neuropeptide levels in sexually immature sea lamprey. Ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) analyses revealed sex differences in GnIH-related neuropeptide levels in the brain and plasma of immature sea lamprey. Exposure to 3kPZS and 3kACA exerted differential effects on GnIH-related neuropeptide levels in both sexes, but the effects were more prominent in female brains. We conclude that sea lamprey Pheromones regulate GnIH-related neuropeptide levels in a sexually dimorphic manner.
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an anti steroidogenic inhibitory primer Pheromone in male sea lamprey petromyzon marinus
General and Comparative Endocrinology, 2013Co-Authors: Yu Wen Chungdavidson, Huiyong Wang, Mara B Bryan, Hong Wu, Nicholas S Johnson, Weiming LiAbstract:Abstract Reproductive functions can be modulated by both stimulatory and inhibitory primer Pheromones released by conspecifics. Many stimulatory primer Pheromones have been documented, but relatively few inhibitory primer Pheromones have been reported in vertebrates. The sea lamprey male sex Pheromone system presents an advantageous model to explore the stimulatory and inhibitory primer Pheromone functions in vertebrates since several Pheromone components have been identified. We hypothesized that a candidate sex Pheromone component, 7α, 12α-dihydroxy-5α-cholan-3-one-24-oic acid (3 keto-allocholic acid or 3kACA), exerts priming effects through the hypothalamic-pituitary–gonadal (HPG) axis. To test this hypothesis, we measured the peptide concentrations and gene expressions of lamprey gonadotropin releasing hormones (lGnRH) and the HPG output in immature male sea lamprey exposed to waterborne 3kACA. Exposure to waterborne 3kACA altered neuronal activation markers such as jun and jun N-terminal kinase ( JNK ), and lGnRH mRNA levels in the brain. Waterborne 3kACA also increased lGnRH-III, but not lGnRH-I or -II, in the forebrain. In the plasma, 3kACA exposure decreased all three lGnRH peptide concentrations after 1 h exposure. After 2 h exposure, 3kACA increased lGnRH-I and -III, but decreased lGnRH-II peptide concentrations in the plasma. Plasma lGnRH peptide concentrations showed differential phasic patterns. Group housing condition appeared to increase the averaged plasma lGnRH levels in male sea lamprey compared to isolated males. Interestingly, 15α-hydroxyprogesterone (15α-P) concentrations decreased after prolonged 3kACA exposure (at least 24 h). To our knowledge, this is the only known synthetic vertebrate Pheromone component that inhibits steroidogenesis in males.
Matthieu Dacher - One of the best experts on this subject based on the ideXlab platform.
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Exposure to Conspecific and Heterospecific Sex-Pheromones Modulates Gustatory Habituation in the Moth Agrotis ipsilon.
Frontiers in Physiology, 2019Co-Authors: Camille Hostachy, Philippe Couzi, Melissa Hanafi-portier, Guillaume Portemer, Nina Deisig, Meena Murmu, Matthieu DacherAbstract:In several insects sex-Pheromones are essential for reproduction and reproductive isolation. Pheromones generally elicit stereotyped behaviors. In moths, these are attraction to conspecific sex-Pheromone sources and deterrence for heterospecific sex-Pheromone. Contrasting with these innate behaviors, some results in social insects point towards effects of non-sex-Pheromones on perception and learning. We report the effects of sex-Pheromone pre-exposure on gustatory perception and habituation (a non-associative learning) in male Agrotis ipsilon moths, a non-social insect. We also studied the effect of Z5-decenyl acetate (Z5), a compound of the sex-Pheromone of the related species Agrotis segetum. We hypothesized that conspecific sex-Pheromone and Z5 would have opposite effects. Pre-exposure to either the conspecific sex-Pheromone or Z5 lasted 15 minutes and was done either immediately or 24 hours before the experiments, using their solvent alone (hexane) as control. In a sucrose responsiveness assay, pre-exposure to the conspecific sex-Pheromone had no effect on the dose-response curve at either delays. By contrast, Z5 slightly improved sucrose responsiveness 15 minutes but not 24 hours after pre-exposure. Interestingly, the conspecific sex-Pheromone and Z5 had time-dependent effects on gustatory habituation: pre-exposing the moths with Z5 hindered learning after immediate but not 24-hour pre-exposure, whereas pre-exposure to the conspecific sex-Pheromone hindered learning at 24-hour but not immediate pre-exposure. They did not have opposite effects. This is the first time a sex-Pheromone is reported to affect learning in a non-social insect. The difference in modulation between conspecific sex-Pheromone and Z5 suggests that con- and hetero-specific sex-Pheromones act on plasticity through different cerebral pathways.
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Exposure to conspecific and heterospecific sex-Pheromones modulates gustatory habituation in the moth Agrotis ipsilon
Frontiers in Physiology, 2019Co-Authors: Camille Hostachy, Philippe Couzi, Melissa Hanafi-portier, Guillaume Portemer, Nina Deisig, Meena Murmu, Matthieu DacherAbstract:In several insects, sex-Pheromones are essential for reproduction and reproductive isolation. Pheromones generally elicit stereotyped behaviors. In moths, these are attraction to conspecific sex-Pheromone sources and deterrence for heterospecific sex-Pheromone. Contrasting with these innate behaviors, some results in social insects point toward effects of non-sex-Pheromones on perception and learning. We report the effects of sex-Pheromone pre-exposure on gustatory perception and habituation (a non-associative learning) in male Agrotis ipsilon moths, a non-social insect. We also studied the effect of Z5-decenyl acetate (Z5), a compound of the sex-Pheromone of the related species Agrotis segetum. We hypothesized that conspecific sex-Pheromone and Z5 would have opposite effects. Pre-exposure to either the conspecific sex-Pheromone or Z5 lasted 15 min and was done either immediately or 24 h before the experiments, using their solvent alone (hexane) as control. In a sucrose responsiveness assay, pre-exposure to the conspecific sex-Pheromone had no effect on the dose-response curve at either delays. By contrast, Z5 slightly improved sucrose responsiveness 15 min but not 24 h after pre-exposure. Interestingly, the conspecific sex-Pheromone and Z5 had time-dependent effects on gustatory habituation: pre-exposing the moths with Z5 hindered learning after immediate but not 24-h pre-exposure, whereas pre-exposure to the conspecific sex-Pheromone hindered learning at 24-h but not immediate pre-exposure. They did not have opposite effects. This is the first time a sex-Pheromone is reported to affect learning in a non-social insect. The difference in modulation between conspecific sex-Pheromone and Z5 suggests that con-and hetero-specific sex-Pheromones act on plasticity through different cerebral pathways.
Eric B Jang - One of the best experts on this subject based on the ideXlab platform.
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Host-plant green-leaf volatiles synergize the synthetic sex Pheromones of the corn earworm and codling moth (Lepidoptera)
CHEMOECOLOGY, 1993Co-Authors: Douglas M Light, Joseph C Dickens, Richard E. Rice, Robert A. Flath, Ronald G. Buttery, Frank G. Zalom, Eric B JangAbstract:The capture of adult male moths in female sex Pheromone traps of two key agricultural pests, the corn earworm ( Helicoverpa zea ) and the codling moth ( Cydia pomonella ), is enhanced or synergized by a certain group of host-plant volatiles, the “green-leaf volatiles” (GLVs). Since female adults of both species call and release their sex Pheromones while perched upon the leaves of their host-plants, the volatile constituents from the leaves of a number of host-plants were compared. Sex Pheromone traps containing one of the prominent leaf volatiles of certain H. zea hosts, (Z)-3-hexenyl acetate, not only significantly increased the capture of H. zea males but were preferred over traps baited only with sex Pheromone. Similarly, traps baited with synthetic sex pheromome of C. pomonella plus a blend of GLVs captured significantly more males than traps baited only with sex Pheromone. Since male moths are not captured in traps baited only with these GLVs, it appears that these GLVs act as Pheromone synergists which increase or enhance the attraction or arrestment of male moths in Pheromone traps.
Richard G Harrison - One of the best experts on this subject based on the ideXlab platform.
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a δ11 desaturase gene genealogy reveals two divergent allelic classes within the european corn borer ostrinia nubilalis
BMC Evolutionary Biology, 2010Co-Authors: Kerry A Geiler, Richard G HarrisonAbstract:Background Moth Pheromone mating systems have been characterized at the molecular level, allowing evolutionary biologists to study how changes in protein sequence or gene expression affect Pheromone phenotype, patterns of mating, and ultimately, the formation of barriers to gene exchange. Recent studies of Ostrinia Pheromones have focused on the diversity of sex Pheromone desaturases and their role in the specificity of Pheromone production. Here we produce a Δ11 desaturase genealogy within Ostrinia nubilalis. We ask what has been the history of this gene, and whether this history suggests that changes in Δ11 desaturase have been involved in the divergence of the E and Z O. nubilalis Pheromone strains.
