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Journal articles on the topic 'Prey-induced reaction'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wang, Weiming, Yongli Cai, Yanuo Zhu, and Zhengguang Guo. "Allee-Effect-Induced Instability in a Reaction-Diffusion Predator-Prey Model." Abstract and Applied Analysis 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/487810.

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We investigate the spatiotemporal dynamics induced by Allee effect in a reaction-diffusion predator-prey model. In the case without Allee effect, there is nonexistence of diffusion-driven instability for the model. And in the case with Allee effect, the positive equilibrium may be unstable under certain conditions. This instability is induced by Allee effect and diffusion together. Furthermore, via numerical simulations, the model dynamics exhibits both Allee effect and diffusion controlled pattern formation growth to holes, stripes-holes mixture, stripes, stripes-spots mixture, and spots repl

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2

Fu, Shengmao, and Lina Zhang. "Instability Induced by Cross-Diffusion in a Predator-Prey Model with Sex Structure." Journal of Applied Mathematics 2012 (2012): 1–18. http://dx.doi.org/10.1155/2012/240432.

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In this paper, we consider a cross-diffusion predator-prey model with sex structure. We prove that cross-diffusion can destabilize a uniform positive equilibrium which is stable for the ODE system and for the weakly coupled reaction-diffusion system. As a result, we find that stationary patterns arise solely from the effect of cross-diffusion.

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3

LIU, JIA, HUA ZHOU, and LAI ZHANG. "CROSS-DIFFUSION INDUCED TURING PATTERNS IN A SEX-STRUCTURED PREDATOR–PREY MODEL." International Journal of Biomathematics 05, no. 04 (2012): 1250016. http://dx.doi.org/10.1142/s179352451100157x.

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In this paper, we consider a sex-structured predator–prey model with strongly coupled nonlinear reaction diffusion. Using the Lyapunov functional and Leray–Schauder degree theory, the existence and stability of both homogenous and heterogenous steady-states are investigated. Our results demonstrate that the unique homogenous steady-state is locally asymptotically stable for the associated ODE system and PDE system with self-diffusion. With the presence of the cross-diffusion, the homogeneous equilibrium is destabilized, and a heterogenous steady-state emerges as a consequence. In addition, the

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4

Jiang, Jun, Jinfeng Wang, and Yingwei Song. "The Influence of Dirichlet Boundary Conditions on the Dynamics for a Diffusive Predator–Prey System." International Journal of Bifurcation and Chaos 29, no. 09 (2019): 1950113. http://dx.doi.org/10.1142/s021812741950113x.

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A reaction–diffusion predator–prey system with homogeneous Dirichlet boundary conditions describes the lethal risk of predator and prey species on the boundary. The spatial pattern formations with the homogeneous Dirichlet boundary conditions are characterized by the Turing type linear instability of homogeneous state and bifurcation theory. Compared with homogeneous Neumann boundary conditions, we see that the homogeneous Dirichlet boundary conditions may depress the spatial patterns produced through the diffusion-induced instability. In addition, the existence of semi-trivial steady states a

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5

Wang, Xiaoqin, and Yongli Cai. "Cross-Diffusion-Driven Instability in a Reaction-Diffusion Harrison Predator-Prey Model." Abstract and Applied Analysis 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/306467.

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We present a theoretical analysis of processes of pattern formation that involves organisms distribution and their interaction of spatially distributed population with cross-diffusion in a Harrison-type predator-prey model. We analyze the global behaviour of the model by establishing a Lyapunov function. We carry out the analytical study in detail and find out the certain conditions for Turing’s instability induced by cross-diffusion. And the numerical results reveal that, on increasing the value of the half capturing saturation constant, the sequences “spots → spot-stripe mixtures → stripes →

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6

Wu, Sainan, Jinfeng Wang, and Junping Shi. "Dynamics and pattern formation of a diffusive predator–prey model with predator-taxis." Mathematical Models and Methods in Applied Sciences 28, no. 11 (2018): 2275–312. http://dx.doi.org/10.1142/s0218202518400158.

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We propose a new reaction–diffusion predator–prey model system with predator-taxis in which the preys could move in the opposite direction of predator gradient. A similar situation also occurs when susceptible population avoids the infected ones in epidemic spreading. The global existence and boundedness of solutions of the system in bounded domains of arbitrary spatial dimension and any predator-taxis sensitivity coefficient are proved. It is also shown that such predator-taxis does not qualitatively affect the existence and stability of coexistence steady state solutions in many cases. For d

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7

Arshavsky, Y. I., T. G. Deliagina, G. N. Gamkrelidze, G. N. Orlovsky, Y. V. Panchin, and L. B. Popova. "Pharmacologically induced elements of the hunting and feeding behavior in the pteropod mollusk Clione limacina. II. Effects of physostigmine." Journal of Neurophysiology 69, no. 2 (1993): 522–32. http://dx.doi.org/10.1152/jn.1993.69.2.522.

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1. A contact of the pteropod mollusk Clione limacina with its prey (small pteropod mollusk Limacina helicina) evokes a complex pattern of hunting and feeding behavior: protraction of tentacles to seize the prey, activation of buccal apparatus to swallow the prey, activation of locomotor system (speeding up of wing beating), reversal of reaction to tactile stimulation of the head, loss of normal (vertical) orientation in space, and swimming in circles. After injection of physostigmine (PhS), the acetylcholinesterase inhibitor, into the hemocoel of intact Clione, all these manifestations of the

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8

Kumar, Dinesh, Jatin Gupta, and Soumyendu Raha. "Partitioning a reaction–diffusion ecological network for dynamic stability." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2223 (2019): 20180524. http://dx.doi.org/10.1098/rspa.2018.0524.

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The loss of dispersal connections between habitat patches may destabilize populations in a patched ecological network. This work studies the stability of populations when one or more communication links is removed. An example is finding the alignment of a highway through a patched forest containing a network of metapopulations in the patches. This problem is modelled as that of finding a stable cut of the graph induced by the metapopulations network, where nodes represent the habitat patches and the weighted edges model the dispersal between habitat patches. A reaction–diffusion system on the

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9

Jermacz, Łukasz, Anna Nowakowska, Hanna Kletkiewicz, and Jarosław Kobak. "Experimental evidence for the adaptive response of aquatic invertebrates to chronic predation risk." Oecologia 192, no. 2 (2020): 341–50. http://dx.doi.org/10.1007/s00442-020-04594-z.

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AbstractAs acute stress induced by predation risk can generate significant oxidative damage, prey organisms are forced to balance their defence reaction and the cost of activating the cellular defence system. Stress tolerance differs significantly among species; therefore predator pressure indirectly shapes the community structure. To test adaptation abilities of amphipod crustaceans (Dikerogammarus villosus and Gammarus jazdzewskii) we exposed them to acute (35 min.) and chronic (1 or 7 days) predation risk (the Eurasian perch). We measured respiration (related to metabolic rate), cellular de

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10

Charlton, Hamish Richard, and David John Merritt. "Carbon dioxide-induced bioluminescence increase in Arachnocampa larvae." Journal of Experimental Biology 223, no. 15 (2020): jeb225151. http://dx.doi.org/10.1242/jeb.225151.

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ABSTRACTArachnocampa larvae utilise bioluminescence to lure small arthropod prey into their web-like silk snares. The luciferin–luciferase light-producing reaction occurs in a specialised light organ composed of Malpighian tubule cells in association with a tracheal mass. The accepted model for bioluminescence regulation is that light is actively repressed during the non-glowing period and released when glowing through the night. The model is based upon foregoing observations that carbon dioxide (CO2) – a commonly used insect anaesthetic – produces elevated light output in whole, live larvae a

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11

Atherton, Jennifer A., and Mark I. McCormick. "Parents know best: transgenerational predator recognition through parental effects." PeerJ 8 (June 18, 2020): e9340. http://dx.doi.org/10.7717/peerj.9340.

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In highly biodiverse systems, such as coral reefs, prey species are faced with predatory threats from numerous species. Recognition of predators can be innate, or learned, and can help increase the chance of survival. Research suggests that parental exposure to increased predatory threats can affect the development, behaviour, and ultimately, success of their offspring. Breeding pairs of damselfish (Acanthochromis polyacanthus) were subjected to one of three olfactory and visual treatments (predator, herbivore, or control), and their developing embryos were subsequently exposed to five differe

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12

Arshavsky, Y. I., T. G. Deliagina, G. N. Gamkrelidze, et al. "Pharmacologically induced elements of the hunting and feeding behavior in the pteropod mollusk Clione limacina. I. Effects of GABA." Journal of Neurophysiology 69, no. 2 (1993): 512–21. http://dx.doi.org/10.1152/jn.1993.69.2.512.

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1. The pteropod mollusk Clione limacina is a predator, feeding on the small pteropod mollusk Limacina helicina. Injection of gamma-aminobutyric acid (GABA) into the hemocoel of the intact Clione evoked some essential elements of the hunting and feeding behavior, i.e., protracting the tentacles, opening the mouth, and triggering the rhythmic movements of the buccal mass. This pattern resembled that evoked by presentation of the prey: Clione grasped the Limacina by its tentacles, extracted the prey's body from the shell and then swallowed it. 2. In electrophysiological experiments, several targe

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13

Riedel, B., T. Pados, K. Pretterebner, et al. "Effect of hypoxia and anoxia on invertebrate behaviour: ecological perspectives from species to community level." Biogeosciences 11, no. 6 (2014): 1491–518. http://dx.doi.org/10.5194/bg-11-1491-2014.

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Abstract. Coastal hypoxia and anoxia have become a global key stressor to marine ecosystems, with almost 500 dead zones recorded worldwide. By triggering cascading effects from the individual organism to the community- and ecosystem level, oxygen depletions threaten marine biodiversity and can alter ecosystem structure and function. By integrating both physiological function and ecological processes, animal behaviour is ideal for assessing the stress state of benthic macrofauna to low dissolved oxygen. The initial response of organisms can serve as an early warning signal, while the successive

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14

Riedel, B., T. Pados, K. Pretterebner, et al. "Effect of hypoxia and anoxia on invertebrate behaviour: ecological perspectives from species to community level." Biogeosciences Discussions 10, no. 8 (2013): 14333–438. http://dx.doi.org/10.5194/bgd-10-14333-2013.

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Abstract. Coastal hypoxia and anoxia have become a global key stressor to marine ecosystems, with almost 500 dead zones recorded wordwide. By triggering cascading effects from the individual organism to the community and ecosystem-level, oxygen depletions threat marine biodiversity and can alter ecosystem structure and function. By integrating both physiological function and ecological processes, animal behaviour is ideal for assessing the stress state of benthic macrofauna to low dissolved oxygen. The initial response of organisms can serve as an early-warning signal, while the successive beh

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15

Furey, Nathan B., Arthur L. Bass, Kristi M. Miller, et al. "Infected juvenile salmon can experience increased predation during freshwater migration." Royal Society Open Science 8, no. 3 (2021). http://dx.doi.org/10.1098/rsos.201522.

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Predation risk for animal migrants can be impacted by physical condition. Although size- or condition-based selection is often observed, observing infection-based predation is rare due to the difficulties in assessing infectious agents in predated samples. We examined predation of outmigrating sockeye salmon ( Oncorhynchus nerka ) smolts by bull trout ( Salvelinus confluentus ) in south-central British Columbia, Canada. We used a high-throughput quantitative polymerase chain reaction (qPCR) platform to screen for the presence of 17 infectious agents found in salmon and assess 14 host genes ass

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16

"Functional anatomy of the head of the large aquatic predator Rhomaleosaurus zetlandicus (Plesiosauria, Reptilia) from the Toarcian (Lower Jurassic) of Yorkshire, England." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 335, no. 1274 (1992): 247–80. http://dx.doi.org/10.1098/rstb.1992.0022.

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The skull and mandible of the type specimen of the large pliosauroid plesiosaur Rhomaleosaurus zetlandicus from the Toarcian of England are elongate, and adapted for powerful predatory activity in water. The mandible contains all elements found in primitive reptilian mandibles. The broadly caniniform dentition suggests that Rhomaleosaurus fed on a wide range of active prey, and forcibly dismembered larger prey by shaking and twisting them. The cranial musculature is reconstructed for the first time in plesiosaurs. It was adapted for feeding in water. The adductor musculature included a large a

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17

Graeve, A., I. Ioannidou, J. Reinhard, D. M. Görl, A. Faissner, and LC Weiss. "Brain volume increase and neuronal plasticity underly predator-induced morphological defense expression in Daphnia longicephala." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-92052-y.

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AbstractPredator-induced phenotypic plasticity describes the ability of prey to respond to an increased predation risk by developing adaptive phenotypes. Upon the perception of chemical predator cues, the freshwater crustacean Daphnia longicephala develops defensive crests against its predator Notonecta spec. (Heteroptera). Chemical predator perception initiates a cascade of biological reactions that leads to the development of these morphological features. Neuronal signaling is a central component in this series, however how the nervous system perceives and integrates environmental signals is

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18

Taylor, Josephine. "The Lady in the Carriage: Trauma, Embodiment, and the Drive for Resolution." M/C Journal 15, no. 4 (2012). http://dx.doi.org/10.5204/mcj.521.

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Dream, 2008Go to visit a friend with vulvodynia who recently had a baby only to find that she is desolate. I realise the baby–a little boy–died. We go for a walk together. She has lost weight through the ordeal & actually looks on the edge of beauty for the first time. I feel like saying something to this effect–like she had a great loss but gained beauty as a result–but don’t think it would be appreciated. I know I shouldn’t stay too long &, sure enough, when we get back to hers, she indicates she needs for me to go soon. In her grief though, her body begins to spasm uncontrollably, d

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