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population growth
This article presents the population growth responses of Tetrahymena shanghaiensis s1 in exposure to rare earth elements (REEs).
      
Both the light REEs (La, Sm) and the heavy REEs (Y, Gd) were investigated with 24- and 96-hr population growth assays to evaluate their aquatic toxicity.
      
Four end points, cell count, frequency of neutral red (NR) uptake, total protein, and nucleic acid content were employed in the 24-h assay, and a population growth curve was plotted in the 96-h assay.
      
Boundedness, asymptotic behavior and oscillatory properties for the models of single-species population growth with impulsive ef
      
The Effect of Dispersal on Population Growth with Stage-structure
      
The Analysis of Model on Population Growth with Stage-structure in the Polluted Environment
      
In the Dutch climate only in summer is relative humidity in houses high enough to allow rapid population growth, but the average temperature on floors in summer is usually below 20°.
      
Population growth was retarded markedly in the galley, the area of heaviest initial infestation.
      
Population growth was unchecked at these sites because they were too far removed from the sterile male release sites.
      
The influence of constant temperature on population growth rates of the cassava mealybug, Phenacoccus manihoti
      
Life table studies were conducted to assess the effect of constant temperature on the rate of population growth of the cassava mealybug, Phenacoccus manihoti Matile-Ferrero.
      
The total number of Neozygites-infected mites produced in maneb-treated plots throughout the test period was significantly greater than that in untreated plots when epizootics were initiated during periods of mite population growth.
      
BYDV infection of oats increased the rate of population growth of S.
      
graminum relative to that on healthy oats but had no effect on the population growth of R.
      
Influence of cultivar maturity time and foliar nitrogen on population growth of Myzus persicae on potato
      
Initial population growth of spotted alfalfa aphid reared on shoots cut from individual lucerne plants, was tested and used as a realistic bioassay of antibiosis.
      
Effects of parasitism by Praon pequodorum on age-specific fecundity and population growth of the pea aphid, Acyrthosiphon pisum
      
The data are discussed with regard to host population growth.
      
Mortality and natality schedules were then combined to construct matrix models of aphid population growth on 60038, 58016, Cascade, and Perle (the most and least susceptible noncommercial and commercial hops, respectively).
      
lagenarium had no effect on population growth of twospotted spider mites,Tetranychus urticae Koch, reared on foliage for which induced resistance to the same pathogen was confirmed.
      
 

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