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Relevant bibliographies by topics / Beetle cuticle

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Academic literature on the topic 'Beetle cuticle'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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Journal articles on the topic "Beetle cuticle"

1

Mendoza-Galván, Arturo, Eloy Muñoz-Pineda, Kenneth Järrendahl, and Hans Arwin. "Pitch profile across the cuticle of the scarab beetle Cotinis mutabilis determined by analysis of Mueller matrix measurements." Royal Society Open Science 5, no. 12 (December 2018): 181096. http://dx.doi.org/10.1098/rsos.181096.

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Helicoidal structures of lamellae of nanofibrils constitute the cuticle of some scarab beetles with iridescent metallic-like shine reflecting left-handed polarized light. The spectral and polarization properties of the reflected light depend on the pitch of the helicoidal structures, dispersion of effective refractive indices and thicknesses of layers in the cuticle. By modelling the outer exocuticle of the scarab beetle Cotinis mutabilis as a stack of continuously twisted biaxial slices of transparent materials, we extract optical and structural parameters by nonlinear regression analysis of variable-angle Mueller-matrix spectroscopic data. Inhomogeneities in the beetle cuticle produce depolarization with non-uniformity in cuticle thickness as the dominant effect. The pitch across the cuticle of C . mutabilis decreased with depth in a two-level profile from 380 to 335 nm and from 390 to 361 nm in greenish and reddish specimens, respectively, whereas in a yellowish specimen, the pitch decreased with depth in a three-level profile from 388 to 326 nm.

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2

Sun, Ji Yu, Yue Ming Wang, Dong Hui Chen, Jin Tong, and Chun Xiang Pan. "Differential Constitutive Equation of Elytra Cuticle by Nanoindentation." Advanced Materials Research 343-344 (September 2011): 1133–39. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.1133.

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Due to size limits in the transverse direction, tensile testing is not appropriate to investigate the mechanical properties of elytra cuticle of the dung beetle (Copris ochus Motschulsky). However, nanoindentation testing can determine a material’s anisotropic properties through a single indentation. In the present study, nanoindentation stress–strain curves were used to characterize the complete mechanical behavior of dung beetle elytra cuticle. A differential constitutive equation has been developed with time-dependent spring constants k and viscosities η . To describe the complex viscoelastic behavior of dung beetle cuticle, a descriptive representation of the linear viscoelasticity law for the multilayer matrix has been formulated. A qualitative model for the relationship between cuticle structure and mechanical properties of elytra may help develop bionic composite materials for micro-aircraft, bionic tribology, bionic medical apparatus, and bionic organs (tissue engineering).

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Wang, Chengshu, and Raymond J. St. Leger. "Developmental and Transcriptional Responses to Host and Nonhost Cuticles by the Specific Locust Pathogen Metarhizium anisopliae var. acridum." Eukaryotic Cell 4, no. 5 (May 2005): 937–47. http://dx.doi.org/10.1128/ec.4.5.937-947.2005.

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ABSTRACT Transcript patterns elicited in response to hosts can reveal how fungi recognize suitable hosts and the mechanisms involved in pathogenicity. These patterns could be fashioned by recognition of host-specific topographical features or by chemical components displayed or released by the host. We investigated this in the specific locust pathogen Metarhizium anisopliae var. acridum. Only host (Schistocerca gregaria) cuticle stimulated the full developmental program of germination and differentiation of infection structures (appressoria). Cuticle from beetles (Leptinotarsa decimlineata) repressed germination while cuticle from hemipteran bugs (Magicicada septendecim) allowed germination but only very low levels of differentiation, indicating that the ability to cause disease can be blocked at different stages. Using organic solvents to extract insects we identified a polar fraction from locusts that allowed appressorial formation against a flat plastic (hydrophobic) surface. Microarrays comprising 1,730 expressed sequence tags were used to determine if this extract elicits different transcriptional programs than whole locust cuticle or nonhost extracts. Of 483 differentially regulated genes, 97% were upregulated. These included genes involved in metabolism, utilization of host cuticle components, cell survival and detoxification, and signal transduction. Surprisingly, given the complex nature of insect epicuticle components and the specific response of M. anisopliae var. acridum to locusts, very similar transcript profiles were observed on locust and beetle extracts. However, the beetle extract cluster was enriched in genes for detoxification and redox processes, while the locust extract upregulated more genes for cell division and accumulation of cell mass. In addition, several signal transduction genes previously implicated in pathogenicity in plant pathogens were only upregulated in response to locust extract, implying similarities in the regulatory circuitry of these pathogens with very different hosts.

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Yang, Zhi Xian, Ze Hua Liu, C. Guo, and Zhen Dong Dai. "Nano Mechanical Behaviors of Hindleg Cuticle in Beetle Dorcus titanus (Coleoptera: Lucanidae)." Advanced Materials Research 668 (March 2013): 529–33. http://dx.doi.org/10.4028/www.scientific.net/amr.668.529.

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Biomaterials have a hierarchical structure with outstanding mechanical properties that are far beyond those additional engineering materials. Nano indentation techniques are convenient to study the biological materials. In this paper, the nano mechanical behavors of hindleg cuticle in beetle Dorcus titanus were investigated. The results indicate that the hardness and modulus values of hindleg cuticle outside are far higher than that of inside as well as the front podomere cuticle outside has a softer stiffness than that of the middle podomere cuticle outside, which is exactly contrary to the cuticle inside anyway. The primary formation factor probably is related to the different epicuticle and exocuticle with different thickness. Mechanics theories on the stiffness, hardness, strength and toughness of biomaterials can be expected to play a key role in developing bio-inspired multi-functional and hierarchical materials in future.

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5

Freimoser, Florian M., Gang Hu, and Raymond J. St Leger. "Variation in gene expression patterns as the insect pathogen Metarhizium anisopliae adapts to different host cuticles or nutrient deprivation in vitro." Microbiology 151, no. 2 (February 1, 2005): 361–71. http://dx.doi.org/10.1099/mic.0.27560-0.

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Metarhizium anisopliae infects a broad range of insects by direct penetration of the host cuticle. To explore the molecular basis of this process, its gene expression responses to diverse insect cuticles were surveyed, using cDNA microarrays constructed from an expressed sequence tag (EST) clone collection of 837 genes. During growth in culture containing caterpillar cuticle (Manduca sexta), M. anisopliae upregulated 273 genes, representing a broad spectrum of biological functions, including cuticle-degradation (e.g. proteases), amino acid/peptide transport and transcription regulation. There were also many genes of unknown function. The 287 down-regulated genes were also distinctive, and included a large set of ribosomal protein genes. The response to nutrient deprivation partially overlapped with the response to Man. sexta cuticle, but unique expression patterns in response to cuticles from another caterpillar (Lymantria dispar), a cockroach (Blaberus giganteus) and a beetle (Popilla japonica) indicate that the pathogen can respond in a precise and specialized way to specific conditions. The subtilisins provided an example of a large gene family in which differences in regulation could potentially allow virulence determinants to target different hosts and stages of infection. Comparisons between M. anisopliae and published data on Trichoderma reesei and Saccharomyces cerevisiae identified differences in the regulation of glycolysis-related genes and citric acid cycle/oxidative phosphorylation functions. In particular, M. anisopliae has multiple forms of several catabolic enzymes that are differentially regulated in response to sugar levels. These may increase the flexibility of M. anisopliae as it responds to nutritional changes in its environment.

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Zhang, Zhijun, Wei Wu, Jin Tong, and Jiyu Sun. "Relationship of hydration and nanomechanical characteristics of beetle cuticle." Bioinspired, Biomimetic and Nanobiomaterials 6, no. 3 (September 2017): 161–67. http://dx.doi.org/10.1680/jbibn.16.00042.

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7

Arwin, H., L. Fernández del Río, C. kerlind, S. Valyukh, A. Mendoza-Galván, R. Magnusson, J. Landin, and K. Järrendahl. "On the polarization of light reflected from beetle cuticle." Materials Today: Proceedings 4, no. 4 (2017): 4933–41. http://dx.doi.org/10.1016/j.matpr.2017.04.099.

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8

Sun, Ji-yu, Jin Tong, and Yun-hai Ma. "Nanomechanical Behaviours of Cuticle of Three Kinds of Beetle." Journal of Bionic Engineering 5 (September 2008): 152–57. http://dx.doi.org/10.1016/s1672-6529(08)60087-6.

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9

Agez, Gonzague, Chloé Bayon, and Michel Mitov. "Multiwavelength micromirrors in the cuticle of scarab beetle Chrysina gloriosa." Acta Biomaterialia 48 (January 2017): 357–67. http://dx.doi.org/10.1016/j.actbio.2016.11.033.

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10

Arakane, Yasuyuki, Joseph Lomakin, Richard W. Beeman, Subbaratnam Muthukrishnan, Stevin H. Gehrke, Michael R. Kanost, and Karl J. Kramer. "Molecular and Functional Analyses of Amino Acid Decarboxylases Involved in Cuticle Tanning in Tribolium castaneum." Journal of Biological Chemistry 284, no. 24 (April 14, 2009): 16584–94. http://dx.doi.org/10.1074/jbc.m901629200.

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Aspartate 1-decarboxylase (ADC) and 3,4-dihydroxyphenylalanine decarboxylase (DDC) provide β-alanine and dopamine used in insect cuticle tanning. β-Alanine is conjugated with dopamine to yield N-β-alanyldopamine (NBAD), a substrate for the phenol oxidase laccase that catalyzes the synthesis of cuticle protein cross-linking agents and pigment precursors. We identified ADC and DDC genes in the red flour beetle, Tribolium castaneum (Tc), and investigated their functions. TcADC mRNA was most abundant prior to the pupal-adult molt. Injection of TcADC double-stranded (ds) RNA (dsTcADC) into mature larvae resulted in depletion of NBAD in pharate adults, accumulation of dopamine, and abnormally dark pigmentation of the adult cuticle. Injection of β-alanine, the expected product of ADC, into dsTcADC-treated pupae rescued the pigmentation phenotype, resulting in normal rust-red color. A similar pattern of catechol content consisting of elevated dopamine and depressed NBAD was observed in the genetic black mutants of Tribolium, in which levels of TcADC mRNA were drastically reduced. Furthermore, from the Tribolium black mutant and dsTcADC-injected insects both exhibited similar changes in material properties. Dynamic mechanical analysis of elytral cuticle from beetles with depleted TcADC transcripts revealed diminished cross-linking of cuticular components, further confirming the important role of oxidation products of NBAD as cross-linking agents during cuticle tanning. Injection of dsTcDDC into larvae produced a lethal pupal phenotype, and the resulting grayish pupal cuticle exhibited many small patches of black pigmentation. When dsTcDDC was injected into young pupae, the resulting adults had abnormally dark brown body color, but there was little mortality. Injection of dsTcDDC resulted in more than a 5-fold increase in levels of DOPA, indicating that lack of TcDDC led to accumulation of its substrate, DOPA.

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Dissertations / Theses on the topic "Beetle cuticle"

1

Armitage, Sophie Alice Octavia. "Costs, colour, cuticle and immunity in the mealworm beetle, Tenebrio molitor." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269290.

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"Evolutionary Biomechanics of the Rostrum of Curculio Linnaeus, 1758 (Coleoptera: Curculionidae)." Doctoral diss., 2009. http://hdl.handle.net/2286/R.I.53836.

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abstract: Weevils are among the most diverse and evolutionarily successful animal lineages on Earth. Their success is driven in part by a structure called the rostrum, which gives weevil heads a characteristic "snout-like" appearance. Nut weevils in the genus Curculio use the rostrum to drill holes into developing fruits and nuts, wherein they deposit their eggs. During oviposition this exceedingly slender structure is bent into a straightened configuration - in some species up to 90° - but does not suffer any damage during this process. The performance of the snout is explained in terms of cuticle biomechanics and rostral curvature, as presented in a series of four interconnected studies. First, a micromechanical constitutive model of the cuticle is defined to predict and reconstruct the mechanical behavior of each region in the exoskeleton. Second, the effect of increased endocuticle thickness on the stiffness and fracture strength of the rostrum is assessed using force-controlled tensile testing. In the third chapter, these studies are integrated into finite element models of the snout, demonstrating that the Curculio rostrum is only able to withstand repeated, extreme bending because of modifications to the composite structure of the cuticle in the rostral apex. Finally, interspecific differences in the differential geometry of the snout are characterized to elucidate the role of biomechanical constraint in the evolution of rostral morphology for both males and females. Together these studies highlight the significance of cuticle biomechanics - heretofore unconsidered by others - as a source of constraint on the evolution of the rostrum and the mechanobiology of the genus Curculio.
Dissertation/Thesis
Doctoral Dissertation Evolutionary Biology 2009

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Conference papers on the topic "Beetle cuticle"

1

Zhang, Zhijun, Wei Wu, Jiyu Sun, and Jin Tong. "Investigation of water's effect on nanomechanical characteristics of beetle cuticle." In 2015 International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO). IEEE, 2015. http://dx.doi.org/10.1109/3m-nano.2015.7425467.

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2

Sun, Jiyu, Jin Tong, and Zhijun Zhang. "Nanoindentation Technique for Measuring Properties of the Clypeus Cuticle of Dung Beetle." In 2007 International Conference on Mechatronics and Automation. IEEE, 2007. http://dx.doi.org/10.1109/icma.2007.4303530.

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3

Sun Jiyu and Tong Jin. "Application of Nanoindenter in Investigating Properties of the Cuticle of Dung Beetle." In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1615566.

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4

Sun, Jiyu, Jin Tong, and Zhijun Zhang. "Nanomechanical properties and the hierarchical structure of elytra cuticle of dung beetle (Copris ochus Motschulsky)." In 2009 International Conference on Mechatronics and Automation (ICMA). IEEE, 2009. http://dx.doi.org/10.1109/icma.2009.5246542.

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5

Vaclaw, M. Coleman. "Linking protein-catechol-chitin interactions to the physical properties of beetle elytral cuticle, a multicomponent biomaterial." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.95574.

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6

Agez, Gonzague, Chloé Bayon, and Michel Mitov. "Cholesteric microlenses and micromirrors in the beetle cuticle and in synthetic oligomer films: a comparative study." In SPIE OPTO, edited by Liang-Chy Chien. SPIE, 2017. http://dx.doi.org/10.1117/12.2260752.

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7

Jae Hyun Kim, Seung-Yop Lee, Jungyul Park, and JunHyuk Moon. "Humidity sensors mimicking cuticle of Hercules beetles." In 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690971.

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