Fecundity selection, also known as fertility selection, is the fitness advantage resulting from the preference of traits that increase the number of offspring (i.e. fecundity). Charles Darwin formulated the theory of fecundity selection between 1871 and 1874 to explain the widespread evolution of female-biased sexual size dimorphism (SSD), where females were larger than males.
Fecundity, in human demography and population biology, is the potential for reproduction of an organism or population, measured by the number of gametes (eggs), seed set, or asexual propagules. Fecundity is similar to fertility, the natural capability to produce offspring. A lack of fertility is infertility while a lack of fecundity would be called sterility.
Jørund Telnes (10 January 1845 – 3 February 1892) was a Norwegian farmer, teacher, writer and politician. Today he is most commonly associated with his book Soga om Sterke-Nils about no:Sterke-Nils (1722–1800), the legendary strongman from Telemark.