Yes but even asexual reproduction of single-cell organisms demonstrates R/K-type mechanisms. For example, a glob of cells will expand and populate quickly when nutrients are added to a petri dish (R-expression, positive reproductive rate). But the cells will literally consume themselves, cannibalize, eat its own body and own kind, when nutrients are absent (K-expression, negative reproductive rate).
You can apply this analogy directly to human populations. I’ve read, over the years, many claims about “white genocide” and the negative reproductive rate of white people. R/K-selection explains this easily and simply. When a population (“white people”) is very K-selective then it will retain a negative reproductive rate.
Thus, to cause expansion of population, you must have a suitable environment to it. In humanity, and especially with the white race, this implies a lot of civilization, artificial technologies (medicines, cars, entertainment, food abundance, etc). So even “white people”, or any human group, can be explained with R/K-types and selections.
Culture is also another factor that coincides with this theory.
For example, when a state makes it technically ILLEGAL to have sex with these females, but not that females, then this will predict the reactive behaviors of R or K-types.
R-types tend to be “Criminals” of society, breaking the rules, trying to gain access to the females off limits to them (rape, premarital sex, sex with women who cannot “consent”, age limits on sex like 15-18 year old girls, etc).