By degrees the fecundity improved, and in about twenty years became equal to what it is in Europe.
Viability, by which are meant fecundity, longevity and vigour, was low in average.
Such is their fecundity that it has been asserted that one female (probably of P. vestimenti) may in eight weeks produce five thousand descendants.
In the British Isles the 1 The name of the fishes of the genus Cyprinus is derived from the island of Cyprus, the ancient sanctuary of Venus; this name is supposed to have arisen from observations of the fecundity and vivacity of carp during the spawning period.
(From Cheshire's Bees and Bee-keeping, Scientific and Practical.) the high-pressure system followed in modern bee-management, exhausts the period of her greatest fecundity in two years, so that queens are usually superseded after their second season has expired and egg-production gradually decreases.