[Fertility of the flea, Xenopsylla gerbilli Minax, that parasitizes the great gerbil (Aphaniptera)].

It has been established experimentally that the fecundity of females of Xenopsylla gerbilli minax is wavy in its character from the beginning to end of their reproduction (peaks are replaced by falls). In spring and summer the egg laying proceeds on the 2nd--3rd day after the first bloodsucking of fleas and lasts to the end of their life. In autumn the first eggs develop on the 4th--6th day and do not develop at all at the end of the life. In winter months the egg production is somewhat slowed down but with the coming of spring become more intensive. Progeny obtained from one female during the experiment varies, depending on the conditions of the maintenance, from 20 to 130 individuals.