Results 241 to 250 of about 19,186 (276)
Some of the next articles are maybe not open access.
Intraspecific competition in a social spider
Ecological Modelling, 1999An individual-based model was developed to investigate the population dynamics of a permanently-social spider, Stegodyphus dumicola (Eresidae), in relation to intraspecific competition for food. This further develops our initial model that demonstrated that individual variability in body mass causes contest competition and is based on it.
Karin Ulbrich, JohannesR. Henschel
openaire +1 more source
INTRASPECIFIC COMPETITION AND THE EVOLUTION OF VIRULENCE IN A PARASITIC TREMATODE
Evolution, 2005Intrahost competition between parasite genotypes has been predicted to be an important force shaping parasite ecology and evolution and has been extensively cited as a mechanism for the evolution of increased parasite virulence. However, empirical evidence demonstrating the existence and nature of intraspecific competition is lacking for many parasites.
Charlotte M, Gower, Joanne P, Webster
openaire +2 more sources
Intraspecific competition delays recovery of population structure
Aquatic Toxicology, 2010Ecotoxicological field studies have shown that total abundance and biomass often recover shortly after pulsed toxicant stress. In contrast, population structure showed comparatively long-term alterations before reaching pre-treatment conditions. We investigated two mechanisms that may explain the prolonged recovery of population structure: latent ...
Matthias, Liess, Kaarina, Foit
openaire +2 more sources
Herbivory and intraspecific competition in a stream caddisfly population
Oecologia, 1987Field experiments were conducted to assess the effects of different population densities of the herbivorous caddisfly Helicopsyche borealis on periphyton biomass and on its own growth rate in Big Sulphur Creek, a third-order stream in northern California, USA.
G A, Lamberti, J W, Feminella, V H, Resh
openaire +2 more sources
Understanding intraspecific and apparent competition
2022AbstractInterspecific competition shares the same dependence on consumer–resource interactions as intraspecific competition and apparent competition. These two related interactions are the subject of this chapter. Both interactions are present in most, if not all, systems in which interspecific competition occurs.
openaire +1 more source
On a Genetic Model of Intraspecific Competition and Stabilizing Selection
The American Naturalist, 2002A genetic model is investigated in which two recombining loci determine the genotypic value of a quantitative trait additively. Two opposing evolutionary forces are assumed to act: stabilizing selection on the trait, which favors genotypes with an intermediate phenotype, and intraspecific competition mediated by that trait, which favors genotypes whose
openaire +4 more sources
Role of fear in predator–prey system with intraspecific competition
Mathematics and Computers in Simulation, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
Intraspecific Competition and Evolution
1988Adaptation through natural selection is one of the key elements of the Darwinian theory of evolution. This process has been the focus of much attention, partly because of its importance in the understanding of biological evolution, and partly because it appears as a nice directed deterministic process.
openaire +1 more source
Intraspecific competition in Tridacna crocea, a burrowing bivalve
Oecologia, 1978Intraspecific competition for space and light occurred when Tridacna crocea burrowed into coralline substratum of boulders on leeward coral reefs in the central Great Barrier Reef near Townsville, Australia. Intensity of competition was linearly related to clam density. Above about 200 clams/m2, all clams physically contacted one another and all shells
openaire +2 more sources
Intraspecific Competition and Population Structure in Rotifers
Ecology, 1979Competition among rotifer clones has been postulated to be an important force influencing rotifer population structure. Competition was investigated experimentally using laboratory populations of Asplanchna. Clones adapted to environments separated in space and clones adapted to environments separated in time were examined. In each case, the population
openaire +1 more source