title: [Number of generations of Xenopsylla skrjabini fleas on the Mangyshlak Peninsula (Aphaniptera)].
abstract: Seasonal changes in the female age composition of micropopulations of X. skrjabini are described. The descriptions are based on observations conducted within a period of 1971-1976. The comparison of females' age with the time of mass egg laying and the data on the developmental cycle rate (from egg to imago) suggests that in Mangyshlak fleas of X. skrjabini have four generations a year. The second, third and fourth generations parasitise at the end of summer or early in autumn. The third and fourth generations hibernate in the quiescence state, begin reproducting in the spring of the next year and in June give start on the first summer generation.
mesh_terms: D000818:Animals; D005260:Female; D007623:Kazakhstan; D011158:Population Growth; D012098:Reproduction; D012621:Seasons; D005423:Siphonaptera / Q000502:physiology*; D013696:Temperature
vernacular_title: O chisle generatsiĭ u blokh Xenopsylla skrjabini na Mangyshlake (Aphaniptera).