Such success is a measure of Darwinian fitness.

This is also known as Darwinian fitness, selective coefficient, and other terms.

Hence, phenotypic plasticity can evolve if Darwinian fitness is increased by changing phenotype.

On the whole, Tunga penetrans does not do very well in terms of its Darwinian fitness.

Virulence is the negative impact that a pathogen (or parasite) has on the Darwinian fitness of a harboring organism (host).

But there has to be a point at which an ever-expanding arbitrary virtuousness is actually reducing your Darwinian fitness.

For some species varying levels of aggression have indeed exhibited direct correlation to a higher level of Darwinian fitness.

Then one of the robot's legs fell off, perhaps illustrating its lack of Darwinian fitness.

Language enhances the Darwinian fitness of the human species.

Additionally, a sexually-shared trait selected for in males can have negative impacts on the Darwinian fitness of females, and vice versa.