Nonlinear and Logistic Growth In Experimental Populations of Guppies

@article{Barlow1992NonlinearAL,
  title={Nonlinear and Logistic Growth In Experimental Populations of Guppies},
  author={Jay Barlow},
  journal={Ecology},
  year={1992},
  volume={73},
  pages={941-950}
}
Previous experiments have shown that for a specific experimental system of guppies (Poecilia reticulata), per capita growth rate is linearly related to population biomass. A length—specific population model is developed to examine how the various mechanisms of density dependence (i.e., changes in somatic growth rates, reproductive rates, and cannibalism) act in concert to shape the overall population response to intraspecific competition. Despite many nonlinear components, equilibrium per… Expand

Figures and Tables from this paper

Population growth rate and its determinants: an overview.
  • R. Sibly, J. Hone
  • Biology, Medicine
  • Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 2002
TLDR
It is concluded that population regulation, density dependence, resource and interference competition, the effects of environmental stress and the form of the ecological niche, are all best defined and analysed in terms of population growth rate. Expand
Experimental evidence for density-dependent responses to mortality of snake-necked turtles
TLDR
It is shown that this species can rebound rapidly following reductions in density, and so is resilient to harvest and predation by pigs, and that high sub-adult and adult survival is crucial for achieving long-term population stability in freshwater turtles generally. Expand
Density-Dependent Effects and the Regulation of Crucian Carp Populations in Single-Species Ponds
TLDR
Density dependence has a variety of regulatory effects on pond populations of crucian carp that contribute to their persistence and resilience, and an increase in relative body depth can be induced in crucians by the presence of piscivorous fish, reducing vulnerability to predation. Expand
Trends in vital rates of the European eel: Evidence for density dependence?
TLDR
Density-dependent processes, such as competition for limited food and space, and trade-offs between reproductive success and survival provide a parsimonious nation (though not one the authors could test for these shifts in population parameters). Expand
IMPLICATIONS OF NON‐LINEAR DENSITY DEPENDENCE
TLDR
Ranges of the ratio of maximum net productivity level (MNPL) to carrying capacity (K) are explored in general models for pinnipeds and odontocetes to demonstrate the range of MNPL/K for marine mammals as a group is large. Expand
JOINT EFFECTS OF POPULATION DENSITY AND TOXICANT EXPOSURE ON POPULATION DYNAMICS OF CAPITELLA SP. I
TLDR
Examination of the combined effects of population density and a toxicant (fluoranthene) on population growth rate and carrying capacity using the deposit-feeding polychaete Capitella sp. Expand
VARIATION IN THE DEMOGRAPHY OF GUPPY POPULATIONS:THE IMPORTANCE OF PREDATION AND LIFE HISTORIES
TLDR
Results from an individual-based computer model suggest that fecundity, offspring size, and individual growth rates were most influential in producing interlocality differences in size distributions and the proportions of the populations that were immature. Expand
A simple von Bertalanffy model for density-dependent growth in extensive aquaculture, with an application to common carp (Cyprinus carpio)
TLDR
It is concluded that the density-dependent extension of the von Bertalanffy growth function provides a useful conceptual framework for the analysis of fish growth in extensive aquaculture. Expand
How environmental stress affects density dependence and carrying capacity in a marine copepod
TLDR
The results show that a stressor's effects at high population density may differ from its effects at low density, and emphasizes the importance of finding new protocols, such as those introduced here, with which to study the joint effects of a Stressor and population density. Expand
Is density-dependent growth in young-of-the-year fishes a question of critical weight?
TLDR
It is concluded that larval-stage survival related to food-limited growth contributes significantly to recruitment variability and density-dependentregulation of cohort biomass via feedbacks derived from reductions in prey resources is most likely to occur at a ``critical-weight'' during the late-larval orjuvenile stage. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 23 REFERENCES
Density‐Dependent Aspects of Growth and Metamorphosis in Bufo Americanus
TLDR
The mean size at metamorphosis was significantly decreased as the initial density of either Bufo or Rana palustris was increased, and this outcome is interpreted as the result of the effect of density on the growth rate of larvae. Expand
Curvilinear Density Dependence and the Design of Field Experiments on Zooplankton Competition
TLDR
A re-analysis of Smith and Cooper's data is presented that more clearly illustrates that curvilinear responses of r to density can occur among zooplankton populations under near-natural conditions, and the effect of resource-renewal techniques on the interpretation of results from competition experiments is discussed. Expand
Asymmetries in population growth regulated by intraspecific competition: Empirical studies and model tests
TLDR
Two simple models are shown to account for asymmetric patterns of population growth for 27 species of Drosophila and for a variety of other organisms, where the data were derived from the literature, to aid laboratory and field ecologists to anticipate the dynamics of various experimental organisms. Expand
The maximum yield problem: Distortion in the yield curve due to age structure
Abstract An unselective harvest is sustainable if the per capita removal rate balances the net per capita growth rate of the population. If the function relating the growth rate to population densityExpand
Interaction of food level and exploitation in experimental fish populations.
TLDR
Nine populations of ~uppies (Lebistes reticulatus) were established in separate aquariums and measurement of the effeet of expillitntion on stocks of fish led to relatively stable yields during weeks 59 to 72, after initial declines due to readjustment of populations. Expand
Global models of growth and competition.
  • M. Gilpin, F. Ayala
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1973
TLDR
This model represents an extension of the Lotka-Volterra model of competition; it adds a fourth parameter that controls the degree of nonlinearity in intraspecific growth regulation and represents a similar Extension of the logistic model of population growth. Expand
Competition Among Cladocera
TLDR
In situ enclosure experiments were used to asses the importance of competition to the population dynamics of three cladocerans in a small pond, and the data suggested that the degree of competition was dependent on resource levels and the age of competitors. Expand
An Experimental Test of the Effects of Predation Risk on Habitat Use in Fish
TLDR
Methods to predict the additional mortality expected on a cohort due to a reduction in growth rate are developed, and the potential for predation risk to enforce size—class segregation is discussed, which leads de facto to resource partitioning. Expand
Nonlinearities in competitive interactions component variables or system response
TLDR
Two examples, one drawn from the laboratory and one from the field, contrast the responses of Daphnia brood size and per capita growth rate during density manipulations, caution against inferences about population change based on knowledge of single component variables. Expand
Some aspects of the dynamics of populations important to the management of the commercial marine fisheries
TLDR
In order to apply the theory developed here to the tropical tuna fishery, it will be necessary to compile statistics of catch, abundance and intensity of fishing over a considerable series of years, beginning as early in the history of the fishery as possible. Expand
...
1
2
3
...