Reproductive potential:

A reproductive parameter that links fecundity with the number of laying with the number of effective broodstock. It can be synthesized in a formula: R = x (bnp) (x: earthworms of the population in a given situation, in this case x = 100, b: average number of embryoslombrices / coconuts, n: average number of layings / year; and p: the proportions of adults and subadults).