Academic literature on the topic 'Sac spiders'

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Journal articles on the topic "Sac spiders"

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Eberhard, William. "Substitution of silk stabilimenta for egg sacs by Allocyclosa bifurca (Araneae: Araneidae) suggests that silk stabilimenta function as camouflage devices." Behaviour 140, no. 7 (2003): 847–68. http://dx.doi.org/10.1163/156853903770238346.

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AbstractThe matching form and orientation of egg sacs and spiders, the match between egg sac color and that of the spider, ontogenetic changes in spider coloration that occur when egg sacs begin to be produced, differences in the positions of the spiders' legs during the day and at night, and coordinated changes in spider and egg sac colors in different populations all indicated that the egg sac and detritus stabilimenta near the hub function as camouflage in Allocyclosa bifurca. Silk stabilimentum construction was induced by experimental removal of egg sac stabilimenta, and was inhibited by a
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Ewunkem, Akamu Jude, and Kyle Agee. "Spider Parental Care and Awe-Inspiring Egg Sac (Cocoon)." International Journal of Zoology 2022 (September 29, 2022): 1–7. http://dx.doi.org/10.1155/2022/6763306.

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Spiders (Arachnida, Araneae) represent one of the largest groups of organisms on Earth with more than 45,000 recorded species found in nearly all terrestrial communities. In these communities, spiders are obligate predators and generalist consumers regulating the density of pests. Spiders have a stupefying array of prey hunting strategies ranging from ambushing to the use of complex silk nares. Spider silk is incredibly tough and can be used for many applications such as wrapping and immobilization, catching prey, as dragline to connect spiders to the web, as ballooning to aid dispersal of juv
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Röggla, Georg. "Yellow sac spiders." Wiener klinische Wochenschrift 130, no. 1-2 (2017): 76. http://dx.doi.org/10.1007/s00508-017-1288-6.

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Souza-Santiago, Brenda Kelly, Yuri Fanchini Messas, Diego Galvão de Pádua, Adalberto J. Santos, and João Vasconcellos-Neto. "Taking care of the enemy: egg predation by the Darwin wasp Tromatobia sp. (Ichneumonidae) on the cobweb spider Chrysso compressa (Araneae, Theridiidae)." Journal of Hymenoptera Research 95 (February 17, 2023): 103–12. http://dx.doi.org/10.3897/jhr.95.97029.

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Some wasp species use spiders as food resources, overcoming several anti-predator barriers that are exerted by spiders. Tromatobia ichneumonid wasps are spider egg predators that usually attack Araneidae species, although there are few records of predation on Clubionidae, Philodromidae, Linyphiidae, Tetragnathidae, and Theridiidae spiders. Here, we describe the interaction between Tromatobia sp. and Chrysso compressa, a subsocial theridiid spider that exhibits extended maternal care, in the Atlantic Forest of southeastern Brazil. We observed that the larva of Tromatobia sp. develop inside the
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Souza-Santiago, Brenda Kelly, Yuri Fanchini Messas, Pádua Diego Galvão de, Adalberto J. Santos, and João Vasconcellos-Neto. "Taking care of the enemy: egg predation by the Darwin wasp Tromatobia sp. (Ichneumonidae) on the cobweb spider Chrysso compressa (Araneae, Theridiidae)." Journal of Hymenoptera Research 95 (February 17, 2023): 103–12. https://doi.org/10.3897/jhr.95.97029.

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Some wasp species use spiders as food resources, overcoming several anti-predator barriers that are exerted by spiders. Tromatobia ichneumonid wasps are spider egg predators that usually attack Araneidae species, although there are few records of predation on Clubionidae, Philodromidae, Linyphiidae, Tetragnathidae, and Theridiidae spiders. Here, we describe the interaction between Tromatobia sp. and Chrysso compressa, a subsocial theridiid spider that exhibits extended maternal care, in the Atlantic Forest of southeastern Brazil. We observed that the larva of Tromatobia sp. develop inside the
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Staniak, Kamil, Grzegorz K. Wagner, and Bernard Staniec. "A new locality of the European yellow sac spider Cheiracanthium punctorium (Villers, 1789) (Araneae: Cheiracanthiidae) in eastern Poland." Fragmenta Faunistica 64, no. 1 (2022): 59–62. http://dx.doi.org/10.3161/00159301ff2021.64.1.059.

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This is the first record of the European yellow sac spider Cheiracanthium punctorium (Villers, 1789) from the Lublin Upland (SE Poland). A dozen or so silk nests containing these spiders were found among goldenrod stems (Solidago sp.) on a dry meadow near Chodel, a village in the valley of the River Chodelka on 8 October 2021.
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Brown, Christopher A., Carlos C. Amaya, and Daniel R. Formanowicz. "The frequency of leg autotomy and its influence on survival in natural populations of the wolf spider Pardosa valens." Canadian Journal of Zoology 96, no. 9 (2018): 973–79. http://dx.doi.org/10.1139/cjz-2017-0262.

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Autotomy occurs when an animal intentionally sacrifices an appendage to escape predation or free a limb. While immediately beneficial, loss of an appendage can lead to a variety of future costs. In many spiders, leg autotomy is common; previous work has sometimes demonstrated autotomy costs in some behaviors, while other times, no costs of autotomy occur. We examined frequency of autotomy in two riparian zone populations of the wolf spider Pardosa valens Barnes, 1959 and then used both mark–recapture work at these sites and laboratory predation trials to determine whether autotomy affected sur
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GAN, Wenjin, Fengxiang Liu, Zengtao Zhang, and Daiqin LI. "Predator perception of detritus and eggsac decorations spun by orb-web spiders Cyclosa octotuberculata: Do they function to camouflage the spiders?" Current Zoology 56, no. 3 (2010): 379–87. http://dx.doi.org/10.1093/czoolo/56.3.379.

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Abstract Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or eggsacs to their webs called web decorations. Web decorations resembling spider body colour pattern have been considered to camouflage the spider from predators. While this camouflage is obvious from a human's perspective, it has rarely been investigated from a predator's perspective. In this study, we tested the visibility of web decorations by calculating chromatic and
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LYLE, ROBIN, and CHARLES R. HADDAD. "Jocquestus, a new genus of trachelid sac spiders from the Afrotropical Region (Arachnida: Araneae)." Zootaxa 4471, no. 2 (2018): 309. http://dx.doi.org/10.11646/zootaxa.4471.2.4.

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The new dark sac spider genus Jocquestus gen. nov. (Araneae: Trachelidae) is proposed for two species of Afrotropical trachelid spiders, J. schenkeli (Lessert, 1923) comb. nov. (type species) from D.R. Congo, South Africa, Mozambique and Zimbabwe, and J. roeweri (Lawrence, 1938) comb. nov. from South Africa, both of which are transferred from Trachelas L. Koch, 1872. Both species are redescribed and the male of J. roeweri comb. nov. is described for the first time. Five new species are described: J. capensis sp. nov. (♂ ♀), J. harrisi sp. nov. (♀) and J. incurvus sp. nov. (♂ ♀) from South Afri
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Uhl, Gabriele, and Fritz Vollrath. "Genital morphology of Nephila edulis: implications for sperm competition in spiders." Canadian Journal of Zoology 76, no. 1 (1998): 39–47. http://dx.doi.org/10.1139/z97-170.

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The genital morphology of the female is assumed to control the pattern of sperm priority. Spiders are divided roughly along phylogenetic lines into haplogyne and entelegyne types, the principal difference being in female genital morphology (cul-de-sac and conduit types of spermathecae). Nephila edulis is an entelegyne spider and we studied the genital morphology of both sexes by means of scanning electron microscopy and semithin sectioning. In the female, the copulatory ducts leading to the spermatheca were much longer and more differentiated than the fertilization duct. We question the common
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Dissertations / Theses on the topic "Sac spiders"

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Yoward, Paul James. "Spider sperm competition : the conduit/cul-de-sac hypothesis : a route to understanding or a dead end?" Thesis, University of York, 1996. http://etheses.whiterose.ac.uk/14176/.

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This thesis is an evaluation of the hypothesis that the spennathecae of spiders affects the sperm precedence patterns in a predictable way (Austad 1984). Spermathecae come in two varieties: cul-de-sac and conduit. Cul-de-sac spennathecae, according to the hypothesis, are supposed to lead to second male sperm priority and conduit to first male sperm priority . The hypothesis was evaluated both directly and indirectly. Direct measurements were made of paternity in two species, Pholcus phalangioides and Tetragnatha montana, both of which are cul-de-sac species. It was found that P. phalangioides
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Singla, Saranshu. "Consequences of Interfacial Interactions on Adsorption and Adhesion." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541714540493631.

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Books on the topic "Sac spiders"

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Allsburg, Chris Van. The Polar Express. Houghton Mifflin, 1995.

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Allsburg, Chris Van. The Polar Express. Houghton Mifflin, 2005.

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Allsburg, Chris Van. The Polar Express. Andersen, 1986.

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Allsburg, Chris Van. Beiji te kuai che. Shang yi wen hua shi yeh gu fen yu xian gong si, 1995.

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Allsburg, Chris Van. El Expreso Polar. Ediciones Ekare-Banco Del Libro, 1985.

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Allsburg, Chris Van. El Expreso Polar. Ediciones Ekaré, 1988.

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Allsburg, Chris Van. The Polar Express. Houghton Mifflin, 2004.

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Allsburg, Chris Van. Kyūkō "Hokkyoku Gō": The Polar Express. Asunaro Shobō, 2003.

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Allsburg, Chris Van. Poli︠a︡rnyĭ ėkspress. Amfora, 2005.

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Allsburg, Chris Van. The Polar Express. Houghton Mifflin, 1985.

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Book chapters on the topic "Sac spiders"

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Nentwig, Wolfgang, Jutta Ansorg, Paula E. Cushing, Yvonne Kranz-Baltensperger, and Christian Kropf. "Yellow Sac Spiders (Cheiracanthiidae)." In House Spiders - Worldwide. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-70448-2_8.

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Heppner, John B., David B. Richman, Steven E. Naranjo, et al. "Sac Spiders (Class Arachnida, Order Araneae, Families Tengellidae, Zorocratidae, Miturgidae, Anyphaenidae, Clubionidae, Liocranidae, and Corinnidae)." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_4000.

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"CLUBIONIDAE. Sac spiders." In Britain's Spiders. Princeton University Press, 2017. http://dx.doi.org/10.1515/9781400885060-094.

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Bradley, Richard A. "FAMILY CLUBIONIDAE • Sac Spiders." In Common Spiders of North America. University of California Press, 2012. http://dx.doi.org/10.1525/california/9780520274884.003.0014.

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Bradley, Richard A. "FAMILY LIOCRANIDAE • Spinylegged Sac Spiders." In Common Spiders of North America. University of California Press, 2012. http://dx.doi.org/10.1525/california/9780520274884.003.0034.

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Sethy, Tanmaya Rani, and Janak Ahi. "BIOINSPIRED SPIDER EGG SAC TECHNOLOGY: BRIDGING NATURE AND INNOVATION IN BIOTECHNOLOGY." In Futuristic Trends in Biotechnology Volume 3 Book 1. Iterative International Publisher, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bfbt1p1ch9.

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Nature has long been a source of inspiration for human innovation, and one of the most fascinating examples comes from the intricate world of spider egg sacs. These remarkable structures, designed over millions of years of evolution, serve as protective enclosures for developing spider embryos. Recent advancements in biotechnology have led to a deeper understanding of the architecture, silk production, and potential applications of spider egg sacs in various fields. This article delves into the multifaceted aspects of bioinspired spider egg sac technology, exploring its diverse forms, silk com
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"Guide to egg-sacs." In Britain's Spiders. Princeton University Press, 2020. http://dx.doi.org/10.2307/j.ctvxcrz3t.12.

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"Guide to egg-sacs." In Britain's Spiders. Princeton University Press, 2017. http://dx.doi.org/10.1515/9781400885060-011.

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"Guide to egg-sacs." In Britain's Spiders. Princeton University Press, 2020. http://dx.doi.org/10.1515/9780691211800-010.

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Craig, Catherine L. "Silk Proteins: Breakdown and Evolutionary Pathways." In Spiderwebs and Silk. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195129168.003.0001.

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Abstract To understand the evolution of spiders, one must understand their silk-producing systems. This chapter will review our current knowledge concerning the molecular composition and structure of silks and fibrous protein glues. The hypotheses generated here are based on comparison between the silks and protein glues produced by spiders and the silks and protein glues produced by insects. These comparisons, in turn, depend on understanding the molecular composition and structure of silks and glues. Only animals in the classes Insecta and Arachnida (Phylum Arthropoda) produce silks. Silks a
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Conference papers on the topic "Sac spiders"

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Titton, Angelo Pradella, Matheus Tuzzin, Carlos H. R. Lopes, et al. "Effect of nanostructuring of nodular cast iron on the static mechanical properties and fatigue life of commercial vehicle brake spiders." In 16th SAE Brasil International Brake and Motion Control Colloquium & Engineering Exhibition. SAE International, 2024. http://dx.doi.org/10.4271/2024-36-0312.

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<div class="section abstract"><div class="htmlview paragraph">The demand for enhanced safety and extended lifespan of brake systems prompts the investigation to increase the static mechanical properties and fatigue resistance of commercial vehicle brake spiders through the incorporation of niobium nanoparticles into a cast iron alloy. This study aims to improve the material structure as well as the static and dynamic mechanical properties of the component. Chemical, microscopic, and mechanical analyses were conducted in samples of the nanostructured alloy and in the spider. A durab
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Almohaimeed, Saleh, Saad Almohaimeed, Mansour Al Ghanim, and Liqiang Wang. "Ar-Spider: Text-to-SQL in Arabic." In SAC '24: 39th ACM/SIGAPP Symposium on Applied Computing. ACM, 2024. http://dx.doi.org/10.1145/3605098.3636065.

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Halperin, Xray, David Santiago, and Abdul Bezrati. "Spider-Man IG-impostors." In SA '18: SIGGRAPH Asia 2018. ACM, 2018. http://dx.doi.org/10.1145/3283254.3283259.

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von Vacano, B., T. Buckup, and M. Motzkus. "Design and Application of Shaper-Assisted Collinear (SAC-) SPIDER for Pulse Compression in High-contrast Multiphoton Microscopy." In 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/cleoe-iqec.2007.4386653.

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Asai, Kikuo, Norio Takase, and Makoto Sato. "Haptic Visualization with 2D Lateral Force Using SPIDAR-Mouse in Molecular Docking." In 2013 IEEE International Conference on Systems, Man and Cybernetics (SMC 2013). IEEE, 2013. http://dx.doi.org/10.1109/smc.2013.100.

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Halperin, Xray. "Marvel's Spider-Man: Miles Morales Procedural Tools for PlayStation 5 Content Authoring." In SA '21: SIGGRAPH Asia 2021. ACM, 2021. http://dx.doi.org/10.1145/3478512.3488594.

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Nagai, Kazuki, Soma Tanoue, Katsuhito Akahane, and Makoto Sato. "Wearable 6-DoF wrist haptic device "SPIDAR-W"." In SA'15: SIGGRAPH Asia 2015. ACM, 2015. http://dx.doi.org/10.1145/2818384.2818403.

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Marcon, Lucas, Pablo Tonetti Anselmo, Vagner Nascimento, Alexandre Vieceli, and Leandro Corso. "Virtual Brake Spider Validation Method Based on Theory of Critical Distance and Experimental Bench Tests." In 15th SAE Brasil International Brake and Motion Control Colloquium & Engineering Exhibition. SAE International, 2022. http://dx.doi.org/10.4271/2021-36-0419.

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Kutej, Lukas, Artur Klink, Sebastian Wegt, Ruediger Reitz, and Suad Jakirlic. "Eddy-Resolving Simulation of Conjugate Heat Transfer in a Test Specimen pertinent to Cooling Channels in IC Engines." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2692.

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<div class="section abstract"><div class="htmlview paragraph">The conjugate heat transfer, which effectively integrates the heat conduction within the solid metal block of the so-called Water Spider Geometry (WSG) configuration and the fluid domain within it, is computationally investigated in the present work, allowing an accurate representation of the temperature conditions at the solid-fluid interface. The WSG configuration represents a specially configured tube geometry that effectively reproduces the flow behavior observed in cooling channels associated with Internal Combustio
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Wegt, Sebastian, Maximilian Bopp, Louis Krüger, et al. "Computational Modeling of the Flow and Heat Transfer in an Internal Combustion Engine-Relevant Cooling Channel." In WCX SAE World Congress Experience. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0198.

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<div class="section abstract"><div class="htmlview paragraph">The “Water Spider Geometry” (WSG) configuration, representing a newly developed reference test sample designed to suitably investigate the flow and heat transfer processes relevant to cooling systems of internal combustion engines, was computationally investigated by applying a recently proposed Reynolds Stress model called the “Elliptic-Blending Model” (EBM). The WSG configuration resembles a specifically configured pipe geometry that appropriately mimics the flow phenomena encountered in cooling channels of realistic i
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