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Showing 1 to 20 of 25 for “"Locusts"”.
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Dorsal wing-flip timing in tethered flying locusts
… study, we seek to determine whether tethered locusts (Locusta migratoria) actively control the timing of wing rotation relative to the stroke reversal (i.e. flip their wings) in order to augment lift and the produce of steering torques during intentional steering maneuvers. Dual highspeed …
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Collision avoidance behaviour in a pair of flying locusts (Locusta migratoria L.)
Migratory locusts; Locusta migratoria L. flying in a swarm would encounter spatiotemporally complex visual cues such as translating, receding and looming stimuli, produced by self-motion as well as object motion in the environment. A rapidly approaching conspecific or a predator represents a …
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The Narrator's Voice in 'The Faerie Queene,' 'Christs Victorie, and Triumph,' and 'The Locusts, or Apollyonists.'
Made available in DSpace on 2014-12-08T22:39:05Z (GMT). No. of bitstreams: 1 6812102.pdf: 18060838 bytes, checksum: ad6d691a9c2aec569af47c402eaa5e3f (MD5) Previous issue date: 1968
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Using new tools to study the neural mechanisms of sensation: Auditory processing in locusts and translational motion vision in flies
… labelling techniques. Using this method in locusts and crickets – model systems of particular interest for their acoustic communication – I successfully delivered polar fluorescent dyes and tracers through the sheath covering the auditory nerve, simultaneously staining both the peripheral …
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Characterizing Locust Anemotaxis: The Impact of Sensory Perturbations on Flight Behavior
… with the goal of better understanding how locusts integrate multiple sensory inputs to maintain flight control. Through a series of experiments, locusts were subjected to visual impairment, turbulent wind conditions, mechanical impairments of their wings and antennae, and pheromonal …
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A pharmacological study of signal transduction mechanisms controlling fluid reabsorption and Ion transport in the locust rectum
Like most insects, locusts face severe regulatory challenges associated with arid habitats, high metabolic rates and high surface area to volume ratios. Therefore, the conservation of water, essential ions and metabolites is very important. Consequently, locusts regulate their hemolymph composition …
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Ethologie des fourmis Eutetramorium mocquerysi (Emery, 1900) Hymenoptera, Formicidae, en laboratoire
… with portions of insects (larvae of coleoptera, locusts, cockroaches. ..).All social insects have several morphoanatomic castes (worker dominating, workers of high ranks: being able to become dominating, workers of low ranks: veritable worker,and the ant male). As with all social insects, the …
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Food preferences and demand in the brushtail possum (Trichosurus vulpecula)
… berries, raw chicken, egg, fivefinger leaves, locusts and mushrooms. More than 75% of possums consumed berries, locusts and mushrooms but fewer than 50% of possums consumed fivefinger, raw chicken and eggs. In Experiment 2, 12 possums were used in a paired stimulus assessment to establish …
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“There are So Many of Us” a history of the Izinkumbi and grouping processes in precolonial and colonial natal, c.1824 - 1862
… people who came to be known as ‘Izinkumbi' — or ‘locusts' — in the period between 1820 and 1864 residing in the Mkhomazi-Mzimkhulu region of what is today the KwaZulu-Natal province of South Africa. It explores their origin in the 1820s when, with the support of the Zulu king, Shaka, numbers of …
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Communication and Travel Coordination in Wild Bonobos
… by simple, decentralized rules. From swarming locusts to crowds of commuters, self-organization often eliminates the need for a more explicit form of coordination. Passive, local cues, however, cannot explain group movement in many circumstances, especially among populations exhibiting low …
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Force response of locust skeletal muscle
… the complex, nonlinear behaviour of the muscle. Locusts provide an opportunity to develop a muscle model in a simpler system, that will still show similar properties to that of mammalian muscles. In developing a model previous work is considered, and complexity is introduced in the experimental …
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A Time-Course Analysis of Behavioral Plasticity and Differential Gene Expression Patterns in Response to Density in Schistocerca americana (Orthoptera: Acrididae)
… changing environment. Some grasshoppers and locusts are capable of expressing an extreme form of density-dependent phenotypic plasticity, known as locust phase polyphenism. At low population density, the individuals typically have a cryptic coloration as nymphs, are less active, and only seek …
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Insect Conservation Within the Severely Fragmented Eastern Tallgrass Prairie Landscape
… was found to range from lows of 0% for grouse locusts, carrion beetles, and treehoppers, to highs of 75% and 83% for flower and root-boring moths. Plant community richness, plant species richness, and plant genus richness were found to explain significant levels of variation in insect species …
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“Imagining it differently, dreaming it passionately”: Examining women-of-colors science fiction as womanist spiritual activism
… Who Fears Death by Nnedi Okorafor, Storm of Locusts by Rebecca Roanhorse, and Ink by Sabrina Vourvoulias. In the development of this argument, I rely on textual analysis highlighting the capabilities of fiction in eliciting an empathetic response in the reader and the transformative and …
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Insect Host Seeking: Investigations into the Molecular Mechanisms of Chemosensation
… as diverse as beetles, moths, honeybees, and locusts. Several of these are true orthologues that can rescue the Or83b mutant phenotype indicating that the function of OR83b has also been conserved. At least one population of neurons in the fly antenna is Or83bindependent. These neurons, which …
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Neural processing of chemosensory information from the locust ovipositor
… the various modes of behaviour of ovipositing locusts. The basiconic sensilla on the ventral ovipositor valve responses to different attractant or repellent chemicals. Responses were seen to aqueous solutions of salts (NaCl, 0.01 M to 3,0 M), sugar (glucose, 0.01 M to 3,0 M), acids (citric …
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Investigation on the Mechanisms of Elastomechanical Behavior of Resilin
… to results obtained with natural resilin from locusts, dragonflies and cockroaches. The resulting master curves show that the synthetic resilin undergoes a prominent transition, though the responsible mechanism is unclear. Possible explanations for the significant increase in modulus include …
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A Socio-Environmental History of Dispossession and Displacement in the Zimunya, Marange and Bvumba (Chirara) Communities of Eastern Zimbabwe, 1920s - 2015
… in return for food and trapping quelea birds and locusts that destroyed their crops and consumed the pests as additional food. During the War of Liberation, people sneaked out from the PVs and carried out farming activities while others travelled to white-owned farms where they rustled cattle …
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A new genus and species of pygmy grasshopper (Orthoptera: Tetrigidae) from Eocene Baltic amber
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Functional design and scaling of the jumping mechanism of the African desert locust
… flying adult stage of the life history. Juvenile locusts produce take-off velocities of between .9 and 1.2 m/s that are relatively size independent. The take-off velocity in juveniles produces a distance of ballistic travel that averages between 20 and 30 cm. In adults, the take-off velocity is …
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