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The r/K selection theory, coined by E. O. Wilson, concerns the trade off between the quantity of offspring produced and the quality of care and devotion given to each of them. From the Wikipedia article:
r-selected species exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood. In contrast, K-selected species are strong competitors in crowded niches, and invest more heavily in fewer offspring, each of which has a relatively high probability of surviving to adulthood.
In this conceptual framework, humans are clearly a K-selected species. Frogs and spiders, in contrast, are examples of r-selected species.
Intraspecies differences exist as well. In Race, Evolution, and Behavior, Philippe Rushton describes human populations as existing along an r/K continuum, with blacks nearest the r side, Asians nearest the K side, and whites in betweenhere are two strategies that living things can use to create the next generation with the limited amount of energy they have available for reproduction: (1) They can invest that energy in a large number of progeny, putting only a little energy into each one so that, although most will not survive, there will be so many of them that a few will survive (an “r” strategy), or (2) they can invest that energy in only a few progeny, putting more energy into each one (e.g., as food in an egg, larger size at birth, body fat, milk, or care after birth), so that each one has a better chance of surviving (a “K” strategy). 1 Salmon, for example, have an “r” strategy, laying millions of eggs that are then abandoned; most die, but enough survive to make the next generation. An elephant, on the other hand, has a “K” strategy, having only a single 170 to 250 pound baby after 22 months of pregnancy, which is then nursed by the mother for three to five years. Most living things are in between the extreme “r” and the extreme “K” strategies. All humans have a very “K” strategy, but the races differ considerably in how “K” they are. 2
J. Philippe Rushton has done a superb job of documenting racial differences in reproductive strategy (Rushton, 2000a), concluding that blacks are the least “K,” Asians the most “K,” and Caucasians in between, but close to Asians. 3 This racial order of reproductive strategy is a direct consequence of our evolution from a more “r” orientated ape. All the races descended from an ape; Asians evolved the most away from that ancestor, Africans the least, and Caucasians in between, but close to Asians. African men have a stronger sex drive due to higher testosterone levels, a higher sperm count due to larger testicles, and behaviorally they have well-honed and fairly indiscriminate seduction skillsThese days in western countries women don`t need that much men anymore to be a provider, so they end up having sex with males who are most aggressive in clubs, kind of like in Jersey Shore. That is why nordic/east asian men are having kind of hard time to attract women because they are most K-strategists, while blacks, latinos and some alfa-whites are getting a lot pussy because they are R-stategists.r-organisms K-organisms
short-lived - long-lived
small - large
weak - strong or well-protected
waste a lot of energy - energy efficient
less intelligent, experienced... more intelligent, experienced...
have large litters have small litters
reproduce at an early age - reproduce at a late age
fast maturation - slow maturation
little care for offspring - much care for offspring
strong sex drive - weak sex drive
small size at birth - large size at birth
And that is why there is so many single mothers these days.
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