The dynamics of starvation and recovery

  title={The dynamics of starvation and recovery},
  author={Justin D. Yeakel and Christopher P. Kempes and Sidney Redner},
The eco-evolutionary dynamics of species are fundamentally linked to the energetic constraints of its constituent individuals. Of particular importance is the interplay between reproduction and the dynamics of starvation and recovery. To elucidate this interplay, we introduce a nutritional state-structured model that incorporates two classes of consumer: nutritionally replete, reproducing consumers, and undernourished, non-reproducing consumers. We obtain strong constraints on starvation and… Expand
Scaling the risk landscape drives optimal life-history strategies and the evolution of grazing
A mechanistic model of energy allocation is derived that explicitly accounts for stochastic fluctuations of an individual consumer’s energetic reserves while foraging and reproducing on a landscape with resources that range from uniformly distributed to highly clustered. Expand


Ontogenetic scaling of foraging rates and the dynamics of a size-structured consumer-resource model.
A physiologically structured model is developed to investigate the effect of different ontogenetic size scalings of the attack rate on the population dynamics of a consumer-resource system and suggests the non-recruit juvenile-driven dynamics is suggested to occur in populations with size-dependent interference or preemptive competition like cicada populations. Expand
Body Size and Consumer-Resource Dynamics
"Plausible" consumer-resource models, based on energetic reasoning and allometric empiricism, are formulated and their dynamics investigated, and changes in dynamics associated with increased resource carrying capacity K (the "paradox of enrichment") are investigated. Expand
When acclimated to low food levels prior to food deprivation, simulating conditions of declining resource abundance in nature, rotifer starvation time decreased and Juveniles had longer starvation times than adults, further supporting the idea that allocating energy to reproduction decreases starvation resistance. Expand
Delayed logistic and rosenzweig-macarthur models with allometric parameter setting estimate population cycles at lower trophic levels well
Oscillations expected from a one-species and a two-species model were compared to cycles observed in laboratory experiments and field surveys for a wide range of invertebrates and vertebrates and it is demonstrated that one allometric setting for age and density applicable to a widerange of species at lower trophic levels allows a reasonable estimate of independently measured cycles. Expand
Starvation and the size structure of zooplankton communities
Summary The survival time of zooplankton under conditions of total starvation is expressed as a function of weight-specific respiration rate and the fraction of initial (pre-starvation) bodyExpand
Effects of allometry, productivity and lifestyle on rates and limits of body size evolution
  • J. Okie, A. Boyer, +15 authors R. Sibly
  • Biology, Medicine
  • Proceedings of the Royal Society B: Biological Sciences
  • 2013
A general theory that integrates individual productivity, the lifestyle component of the slow–fast life-history continuum, and the allometric scaling of generation time to predict a clade's evolutionary rate and asymptotic maximum body size and the shape of macroevolutionary trajectories during diversifying phases of size evolution is presented. Expand
Toward a metabolic theory of ecology
This work has developed a quantitative theory for how metabolic rate varies with body size and temperature, and predicts how metabolic theory predicts how this rate controls ecological processes at all levels of organization from individuals to the biosphere. Expand
Evolution of Body Size: Consequences of an Energetic Definition of Fitness
A general model for the effect of body size on fitness is developed and predicts the distinctive right-skewed shape of the frequency distribution of logarithms of body sizes among species that is observed in a wide variety of organisms from bacteria to mammals. Expand
Role of Depletion on the Dynamics of a Diffusing Forager
We study the dynamics of a starving random walk in general spatial dimension $d$. This model represents an idealized description for the fate of an unaware forager whose motion is not affected by theExpand
Growth, metabolic partitioning, and the size of microorganisms
A mathematical model that relates metabolic partitioning to the form of growth and provides energetic insights into taxonomic tradeoffs related to growth and metabolism and constrains traits that are important for size-structured modeling of microbial communities and their ecological and biogeochemical effects is presented. Expand