Results 261 to 270 of about 164,200 (300)
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A PREY–PREDATOR MODEL WITH MICROPARASITE INFECTION IN THE PREDATOR
Journal of Biological Systems, 2008This paper aims to study the dynamical behaviors of a predator–prey system where the predator is affected by a microparasite infection. The effect of discrete time-delay is investigated. It has been shown that the time-delay can induce instability and oscillations via Hopf bifurcation.
Maiti, A., Bera, S. P., Samanta, G. P.
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THE EFFECT OF PREY AND PREDATOR DENSITIES ON WOLF PREDATION
Ecology, 2002Predator kills rate (i.e., kills per predator per time) is routinely presupposed to depend exclusively on prey density. However, per capita rates of killing may typically depend on the density of both prey and predator. Unfortunately, our perception of many ecological phenomena may be limited by the inappropriate assumption that kill rates do not ...
John A. Vucetich +2 more
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Impact of predator dormancy on prey-predator dynamics
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2018The impact of predator dormancy on the population dynamics of phytoplankton-zooplankton in freshwater ecosystems is investigated using a simple model including dormancy, a strategy to avoid extinction. In addition to recently reported chaos-mediated mixed-mode oscillations, as the carrying capacity grows, we find surprisingly wide phases of nonchaos ...
Joana G. Freire +2 more
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2010
In the last two decades, a new term - “sexual predator” - has arisen to describe criminals who commit sexual offenses against children. We used to refer to such offenders as “pedophiles” or perhaps “child molesters.” First emerging in the 1990s, the word “predator” has become a term of art in legal regulation and a mainstay in media reports and in the ...
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In the last two decades, a new term - “sexual predator” - has arisen to describe criminals who commit sexual offenses against children. We used to refer to such offenders as “pedophiles” or perhaps “child molesters.” First emerging in the 1990s, the word “predator” has become a term of art in legal regulation and a mainstay in media reports and in the ...
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PREDATORS COME AND PREDATORS GO: THE REVERSIBILITY OF PREDATOR-INDUCED TRAITS
Ecology, 2003While numerous studies have been conducted on the ecology and evolution of phenotypic plasticity, to really understand plasticity we need to expose organisms to different environments over several ontogenetic stages. In this way, we can examine whether organisms change their phenotypic strategy over ontogeny, whether there are developmental windows ...
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Chapter 11 Predators and predation
2001Publisher Summary Most field predation studies on hard clams, Mercenaria mercenaria , focuses on elucidating information for aquaculture activities and involves manipulative experiments with some form of protection. The control conditions for these studies are used to examine some ecological relationships, but the plots are seeded at relatively high
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Marine Predators Algorithm: A Nature-Inspired Metaheuristic
Expert Systems With Applications, 2020Seyedali Mirjalili +2 more
exaly