Relevant bibliographies by topics / Hydrocarbons, cuticular lipids

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Academic literature on the topic 'Hydrocarbons, cuticular lipids'

Author: Grafiati
Published: 11 December 2022
Last updated: 26 January 2023

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Journal articles on the topic "Hydrocarbons, cuticular lipids"

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Alnajim, Ihab, Manjree Agarwal, Tao Liu, Beibei Li, Xin Du, and Yonglin Ren. "Preliminary Study on the Differences in Hydrocarbons Between Phosphine-Susceptible and -Resistant Strains of Rhyzopertha dominica (Fabricius) and Tribolium castaneum (Herbst) Using Direct Immersion Solid-Phase Microextraction Coupled with GC-MS." Molecules 25, no. 7 (March 29, 2020): 1565. http://dx.doi.org/10.3390/molecules25071565.

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Phosphine resistance is a worldwide issue threatening the grain industry. The cuticles of insects are covered with a layer of lipids, which protect insect bodies from the harmful effects of pesticides. The main components of the cuticular lipids are hydrocarbon compounds. In this research, phosphine-resistant and -susceptible strains of two main stored-grain insects, T. castaneum and R. dominica, were tested to determine the possible role of their cuticular hydrocarbons in phosphine resistance. Direct immersion solid-phase microextraction followed by gas chromatography-mass spectrometry (GC-MS) was applied to extract and analyze the cuticular hydrocarbons. The results showed significant differences between the resistant and susceptible strains regarding the cuticular hydrocarbons that were investigated. The resistant insects of both species contained higher amounts than the susceptible insects for the majority of the hydrocarbons, sixteen from cuticular extraction and nineteen from the homogenized body extraction for T. castaneum and eighteen from cuticular extraction and twenty-one from the homogenized body extraction for R. dominica. 3-methylnonacosane and 2-methylheptacosane had the highest significant difference between the susceptible and resistant strains of T. castaneum from the cuticle and the homogenized body, respectively. Unknown5 from the cuticle and 3-methylhentriacontane from the homogenized body recorded the highest significant differences in R. dominica. The higher hydrocarbon content is a key factor in eliminating phosphine from entering resistant insect bodies, acting as a barrier between insects and the surrounding phosphine environment.
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Horne, G. L., and A. A. Priestman. "The chemical characterization of the epicuticular hydrocarbons of Aedes aegypti (Diptera: Culicidae)." Bulletin of Entomological Research 92, no. 4 (August 2002): 287–94. http://dx.doi.org/10.1079/ber2002170.

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AbstractThe chemical characterization of the hydrocarbon fraction of the epicuticular lipids of the vector mosquito Aedes aegypti (Linnaeus) was performed using gas chromatography (GC) and gas chromatography–electron impact mass spectrometry (GC–MS). Seventy eight compounds were detected in purified hexane extracts and of these, 42 hydrocarbons were identified and several of the remaining compounds were partially characterized. The hydrocarbon classes present were n-alkanes, monomethylalkanes, dimethylalkanes and alkenes and the results were similar to those published for other Aedes species. Quantitative comparisons of cuticular hydrocarbon profiles were made between males and females, different age groups and between a standard laboratory strain and a recently colonized strain of A. aegypti. These results provide baseline data for further studies on the possible role of mosquito cuticular hydrocarbons in the modification of mating behaviour.
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Rourke, B. C., and A. G. Gibbs. "Effects of lipid phase transitions on cuticular permeability: model membrane and in situ studies." Journal of Experimental Biology 202, no. 22 (November 15, 1999): 3255–62. http://dx.doi.org/10.1242/jeb.202.22.3255.

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The role of lipid physical properties in cuticular water loss was examined in model membranes and intact insects. In model experiments, pure hydrocarbons of known melting point (T(m)) were applied to a membrane, and the effects of temperature on permeability were quantified. Arrhenius plots of permeability were biphasic, and transition temperatures for water loss (T(c)) were similar to T(m). In grasshoppers Melanoplus sanguinipes, changes in cuticular water loss were measured using flow-through respirometry. Transition temperatures were determined and compared with T(m) values of cuticular lipids, determined using Fourier transform infrared spectroscopy, for the same individuals. Individual variation in T(m) was highly correlated with T(c), although T(m) values were slightly higher than T(c) values. Our results show that, in both intact insects and model membranes, lipid melting results in greatly increased cuticular permeability.
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Jacob, Jürgen, Gottfried Raab, and Udo Hoppe. "Surface Lipids of the Silverfish (Lepisma saccharina L.)." Zeitschrift für Naturforschung C 52, no. 1-2 (February 1, 1997): 109–13. http://dx.doi.org/10.1515/znc-1997-1-219.

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Abstract Surface lipids obtained from the silverfish by short-term solvent extraction contain ali­ phatic hydrocarbons, monoester waxes, cholesteryl esters, triglycerides, free cholesterol, and free fatty acids. Together, cholesteryl esters and free cholesterol account for >30% of the total lipids. As found for other arthropods living in aquatic or moist environments unsaturated homologues predominate among the acidic constituents. The cuticular lipid composition o f silverfish resembles that of other more primitive arthropod forms such as stoneflies and dragonflies.
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Gerbaulet, Moritz, Anton Möllerke, Katharina Weiss, Satya Chinta, Jutta M. Schneider, and Stefan Schulz. "Identification of Cuticular and Web Lipids of the Spider Argiope bruennichi." Journal of Chemical Ecology 48, no. 3 (January 10, 2022): 244–62. http://dx.doi.org/10.1007/s10886-021-01338-y.

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AbstractEmerging evidence shows that the cuticular and silk lipids of spiders are structurally more diverse than those of insects, although only a relatively low number of species have been investigated so far. As in insects, such lipids might play a role as signals in various contexts. The wasp spider Argiope bruennichi has probably the best investigated chemical communication system within spiders, including the known structure of the female sex pheromone. Recently we showed that kin-recognition in A. bruennichi could be mediated through the cuticular compounds consisting of hydrocarbons and, to a much larger proportion, of wax esters. By use of mass spectrometry and various derivatization methods, these were identified as esters of 2,4-dimethylalkanoic acids and 1-alkanols of varying chain lengths, such as tetradecyl 2,4-dimethylheptadecanoate. A representative enantioselective synthesis of this compound was performed which proved the identifications and allowed us to postulate that the natural enantiomer likely has the (2R,4R)-configuration. Chemical profiles of the silk and cuticular lipids of females were similar, while male cuticular profiles differed from those of females. Major components of the male cuticular lipids were tridecyl 2,4-dimethyl-C17-19 alkanoates, whereas those of females were slightly longer, comprising tridecyl 2,4-dimethyl-C19-21 alkanoates. In addition, minor female-specific 4-methylalkyl esters were detected.
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Chortyk, O. T., I. E. Yates, and C. C. Reilly. "Changes in Cuticular Compounds of Developing Pecan Leaves." Journal of the American Society for Horticultural Science 120, no. 2 (March 1995): 329–35. http://dx.doi.org/10.21273/jashs.120.2.329.

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Leaf surface compounds of pecan [Carya illinoensis (Wangenh.) C. Koch] were analyzed with regard to developmental stage and to susceptibility to infection by Cladosporium caryigenum (Ell. et Lang. Gottwald). Immature and mature leaves of two resistant (`Elliott' and `Sumner') and two susceptible (`Wichita' and `Schley') cultivars were extracted with methylene chloride. Extracts were separated by silicic acid chromatography into polar and nonpolar fractions. Constituents of each fraction were subsequently separated by gas chromatography and were identified by gas chromatography-mass spectroscopy. Leaf surface constituents characterized included long-chain aliphatic hydrocarbons, aliphatic wax esters, triterpenoid constituents, aliphatic alcohols, fatty acids, and diacyl glycerides. The predominant surface compounds on immature leaves were lipids such as fatty acids, fatty alcohols, and glycerides. On mature leaves, lipids declined and aliphatic hydrocarbons and triterpenoids became predominant leaf surface constituents. The changes were observed for all cultivars, regardless of genotypic response to C. caryigenum. Thus, we conclude that cuticular chemicals change dramatically during leaf maturation but do not correlate with resistance to scab disease common to certain pecan cultivars.
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Alnajim, Ihab, Xin Du, Byungho Lee, Manjree Agarwal, Tao Liu, and Yonglin Ren. "New Method of Analysis of Lipids in Tribolium castaneum (Herbst) and Rhyzopertha dominica (Fabricius) Insects by Direct Immersion Solid-Phase Microextraction (DI-SPME) Coupled with GC–MS." Insects 10, no. 10 (October 19, 2019): 363. http://dx.doi.org/10.3390/insects10100363.

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Lipids play an essential role in providing energy and other physiological functions for insects. Therefore, it is important to determine the composition of insect lipids from cuticular and internal tissues for a better understanding of insect biology and physiology. A novel non-derivatization method for the analysis of lipids including fatty acids, hydrocarbon waxes, sterols in Tribolium castaneum (Herbst) and Rhyzopertha dominica (Fabricius) was explored using the direct immersion solid-phase microextraction (DI-SPME) coupled with gas chromatography–mass spectrometry (GC–MS). Nine extraction solvents, acetonitrile, methanol, hexane, ethanol, chloroform, acetonitrile and ethanol (1:1 v/v), acetonitrile and water (1:1 v/v), ethanol and water (1:1 v/v) and acetonitrile and ethanol and water (2:2:1 v/v/v) were selected and evaluated for the extraction of insect lipids with DI-SPME fiber. Acetonitrile extraction offered the best qualitative, quantitative, and number of lipids extracted from insects samples results. Acetonitrile extracted high-boiling point compounds from both species of tested insects. The range of hydrocarbons was C25 (pentacosane) to C32 (dotriacontane) for T. castaneum and C26 (11-methylpentacosane) to C34 (tetratriacontane) for R. dominica. The major compounds extracted from the cuticular surface of T. castaneum were 11-methylheptacosane (20.71%) and 3-methylheptacosane (12.37%), and from R. dominica were 10-methyldotriacontane (14.0%), and 15-methyltritriacontane (9.93%). The limit of detection (LOD) for the n-alkane compounds ranged between 0.08 (nonacosane) and 0.26 (dotriacontane) µg/g and for the fatty acids between 0.65 (arachidic acid) to 0.89 (oleic acid) µg/g. The study indicated that DI-SPME GC–MS is a highly efficient extraction and a sensitive analytical method for the determination of non-derivatized insect lipids in cuticular and homogenized body tissues.
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Kühbandner, S., K. Hacker, S. Niedermayer, J. L. M. Steidle, and J. Ruther. "Composition of cuticular lipids in the pteromalid wasp Lariophagus distinguendus is host dependent." Bulletin of Entomological Research 102, no. 5 (April 17, 2012): 610–17. http://dx.doi.org/10.1017/s000748531200017x.

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AbstractThe insect cuticle is covered by a thin layer of hydrocarbons not only preventing desiccation but also playing an important role in the sexual communication of several species. In the pteromalid wasp Lariophagus distinguendus, a parasitoid of grain infesting beetles, female cuticular hydrocarbons (CHCs) elicit male courtship behaviour. We analyzed the CHC profiles of male and female L. distinguendus wasps reared on different beetle hosts by coupled gas chromatography- mass spectrometry (GC-MS). Statistical analysis of the data revealed significant differences between strains reared on different hosts, while spatially isolated strains reared on the same host produced similar profiles. CHC profiles of parasitoids reared on Stegobium paniceum were statistically distinguishable from those of wasps reared on all other hosts. A host shift from Sitophilus granarius to S. paniceum resulted in distinguishable CHC profiles of L. distinguendus females after only one generation. Considering the role of CHCs as contact sex pheromones, our data suggest that host shifts in parasitic wasps might lead to reproductive isolation of host races due to the modification of the cuticular semiochemistry.
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Ribeiro-Silva, Cárita S., Elen R. Muniz, Valesca H. Lima, Cíntia C. Bernardo, Walquíria Arruda, Rosane N. Castro, Patrícia S. Gôlo, Isabele C. Angelo, and Éverton K. K. Fernandes. "Cuticular Lipids as a First Barrier Defending Ixodid Ticks against Fungal Infection." Journal of Fungi 8, no. 11 (November 8, 2022): 1177. http://dx.doi.org/10.3390/jof8111177.

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The chemical composition of tick cuticles acts as a barrier to pathogens and may limit infection by entomopathogenic fungi. This study characterized the cuticular neutral lipids (NL) and hydrocarbons (HCs) of four ixodid ticks that are widely distributed in Brazil. HC extracts were analyzed by gas chromatography-mass spectrometry and used to challenge Beauveria bassiana IP361 and Metarhizium robertsii IP146; the effect of cuticular extracts in fungal growth were evaluated by disk diffusion and conidial viability assays. In addition, conidial germination on the tick cuticle was evaluated by scanning electron microscopy, and NL from ticks treated with fungi were assessed by thin layer chromatography. Six HCs were exclusively identified in Amblyomma sculptum. Additionally, cuticle extracts from Dermacentor nitens and A. sculptum inhibited the growth of M. robertsii IP146 and reduced conidial germination of B. bassiana IP361 to 70% and 49%, respectively; the same extracts also produced cytotoxic effects, with conidial death above 30% and 60%. Electron micrographs showed a delayed germination of conidia incubated for 48 h or 72 h on D. nitens and A. sculptum. The lipid profile of A. sculptum treated with fungi was not significantly altered; triacylglycerol was not detected in the cuticle extracts of any other tick species. Finally, A. sculptum and D. nitens cuticles have lipid components that may limit the development of M. robertsii.
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Dashbaldan, Soyol, Rafał Becker, Cezary Pączkowski, and Anna Szakiel. "Various Patterns of Composition and Accumulation of Steroids and Triterpenoids in Cuticular Waxes from Screened Ericaceae and Caprifoliaceae Berries during Fruit Development." Molecules 24, no. 21 (October 23, 2019): 3826. http://dx.doi.org/10.3390/molecules24213826.

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Cuticular waxes are primarily composed of two classes of lipids: compounds derived from very-long-chain fatty acids and isoprenoids, particularly triterpenoids and steroids. Isoprenoids can occur in cuticular waxes in high amounts, dominating the mixture of aliphatic long-chain hydrocarbons, while in other plants they are found in trace concentrations. Triterpenoids occurring in fruit cuticular waxes are of interest due to their potential role in the protection against biotic stresses, including pathogen infections, and their impact on the mechanical toughness of the fruit surface, maintaining fruit integrity, and post-harvest quality. The aim of the present study was the determination of the changes in the triterpenoid profile of the fruit cuticular waxes of four plant species bearing edible berries: Vaccinium myrtillus, V. vitis-idaea, and Arbutus unedo of the Ericaceae and the edible honeysuckle Lonicera caerulea of the Caprifoliaceae. Triterpenoids were identified and quantified by GC-MS/FID (gas chromatography-mass spectrometry/flame ionization detection) at three different phenological stages: young berries, berries at the onset of ripening, and mature berries. During fruit development and maturation, the triterpenoid content in cuticular waxes displayed species-specific patterns of changes. The steroid content seemed to be directly correlated with the developmental stage, with a very typical point of transition between growth and ripening being observed in all the fruit analyzed in this study.
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Dissertations / Theses on the topic "Hydrocarbons, cuticular lipids"

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Abomhara, Aisha. "Analysis of the cuticle of two species of grain storage pest and interaction with germination of entomopathogenic fungi." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96212/4/Aisha_Abomhara_Thesis.pdf.

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This thesis compares the early stages in germination and infection of two entomopathogenic fungi, Metarhizium anisopliae and Beauveria bassiana on the cuticle of two important pest of grain, the beetles Tribolium castaneum and Rhyzopertha dominica using scanning electronic microscopy. It is the first study to report the chemical composition of wing and elytra from these two grain beetles using gas chromatography mass spectrometry. The thesis discusses the potential impact of the components of the cuticle on the observed patterns of germination and growth of the entomopathogenic fungi.
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Book chapters on the topic "Hydrocarbons, cuticular lipids"

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Blomquist, Gary J., Claus Tittiger, and Russell Jurenka. "Cuticular Hydrocarbons and Pheromones of Arthropods." In Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 1–32. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-54529-5_11-1.

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Blomquist, Gary J., Claus Tittiger, and Russell Jurenka. "Cuticular Hydrocarbons and Pheromones of Arthropods." In Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 213–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-90569-3_11.

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Zeisler-Diehl, Viktoria Valeska, Wilhelm Barthlott, and Lukas Schreiber. "Plant Cuticular Waxes: Composition, Function, and Interactions with Microorganisms." In Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 1–16. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-54529-5_7-1.

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Zeisler-Diehl, Viktoria Valeska, Wilhelm Barthlott, and Lukas Schreiber. "Plant Cuticular Waxes: Composition, Function, and Interactions with Microorganisms." In Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 123–38. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-90569-3_7.

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Blomquist, Gary J., and Mertxe de Renobales. "Biosynthesis of Insect Cuticular Hydrocarbons: Application of Carbon-13 NMR Spectroscopy." In Metabolic Aspects of Lipid Nutrition in Insects, 203–22. CRC Press, 2019. http://dx.doi.org/10.1201/9780429048982-11.

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Journal articles
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