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Genetic structure of a natural population of Dictyostelium discoideum, a cellular slime mould
The tentative conclusion is that genetic exchange does not in fact occur, and that the observed shuffling of RFLP bands is caused by insertion and excision of transposons known to be associated with the tRNA genes of Dictyostelium.
Experimental density manipulations of the predator Tenodera, sinensis (Orthoptera: Mantidae) in an old-field community. I: Mortality, development and dispersal of juvenile mantids
Relative dispersal, measured by monitoring nymphs caught in Tangletrap barriers surrounding experimental field plots, increased with increasing density, which contributed to overall convergence in density to similar levels among treatments and may help to regulate natural populations of this species.
Influence of sunlight and soil nutrients on clonal growth and sexual reproduction of the understory perennial herb Sanguinaria canadensis L.1
It is suggested that local populations of S. canadensis rapidly respond to increases in light and nutrients associated with disturbance through increased clonal growth and responds vigorously to increased sunlight and to fertilization when under high-light conditions.
Egg dispersion in two species of praying mantids (Mantodea: Mantidae).
Cannibalism reverses male-biased sex ratio in adult mantids: female strategy against food limitation?
Female mantids continue to attract and cannibalize males beyond their need for sperm as a strategy to alleviate food limitation during oogenesis, which is more parsimonious than the adaptive suicide hypothesis.
Ecological Consequences of Food Limitation for Adult Mantids (Tenodera ardifolia sinensis Saussure)
The data suggest that food availability for nymphs affects initial sizes of adults, which in turn determines potential weight gain during the adult portion of the life cycle, and the magnitude and extent to which it is realized affects fecundity.
Mating types in cellular slime molds.
The Regulation of Density in a Natural Population of the Pond Snail, Lymnaea Elodes
- R. Eisenberg
- 1 November 1966
The regulation of density in the pond snail was far more complete and occurred more rapidly than was thought possible, and the data strongly suggest that it was mediated through food limitation as expressed in fecundity.
Two‐Dimensional Microdistribution or Cellular Slime Molds in Forest Soil
- R. Eisenberg
- Environmental Science
- 1 March 1976
Four sample series consisting of 101 small samples of forest soil were examined for the presence of cellular slime molds and the distribution of species indicates that on a microlevel, 5, 4, or even 3 species seem seldom to co-occur.