In the absence of disturbance, spatially structured landscapes favour species investing more in reproduction, but less in dispersal and survival.
The study showed that bees that hatched prior to flowering suffered from lower rates of reproduction, were less active, and faced greater risk from predators and parasites.
His idea of "negative eugenics", designed to restrict the reproduction of less "fit" populations, would eventually feed into the policies of sterilisation followed by many from Nazi Germany to Social Democratic Sweden.
Very simply, this rate can be understood as the number of births minus the number of deaths per generation time in other words, the reproduction rate less the death rate.
Allowing this process to proceed indefinitely, and assuming a constant reproduction rate less than 1, some simple math (details of which are available at http://cdg.columbia.edu/cdg/papers) reveals that the final number reached will be approximately N ÷ (1-R).
This is useful in the context of control of the infection on natural landscapes, because a commonly suggested strategy is to target focal areas, in order to make their corresponding basic reproduction numbers less than one, effectively turning them into sinks.
This is because maturation or reproduction becomes less food-dependent, thereby suppressing the positive feedback necessary for ASS.
Organisms that suffer from high extrinsic mortality should invest more in reproduction and less in maintenance and, thus, should age faster and be more susceptible to diseases [6].
Large cell sizes are restored through sexual reproduction, or, less frequently, through asexual enlargement [ 29].
