[effect of the digestive process on the survival of the plague agent in xenopsylla gerbilli minax fleas].hystological investigations of experimentally infected x. gerbilli minax have shown that at the early stages of the digestion, while in the intestine compact clots of non-digested blood, are preserved, proceeds the reproduction of the plague agent. with the decay of the alimentary clot it changes into the dying off of the microbe population and after the ceasing of digestion the accumulation of bacteria renews again. simultaneously with the changes in the number of microbes their morphology vari ...1977593719
[fleas of the eastern kyzyl kum and their epizootic significance].the fauna of fleas in the east kisil-kum includes 24 species. different physicogeographic regions of sands are characterized by different spectra and number of species of fleas. the greatest share in collections is composed by xenopsylla gerbilli caspica--the parasite of rhombomys opimus. in autumn the other parasite of this rodent, coptopsylla lamellifer, is a mass species. all the most significant and long changes in the number of these species are associated with changes in the density of the ...19911839698
[capacity of xenopsylla gerbilli minax and x. conformis fleas to feed on man]. 19817254137
[physiological age of the fleas and the analysis of age structure of natural population of xenopsylla gerbilli wagn].a new six-graded scale is suggested instead of five-graded one proposed earlier (kunitskaya, 1960). analysis of the reproduction and age composition of the natural population of x. gerbilli with a use of the suggested scale enabled the authors to find out regularities in the reproduction, senescence and change of generations of these insects in south pribalkhashke. it was established that one complete, one incomplete and possibly third partial generation develop in this region for a year.2010142945
[number of generations of xenopsylla gerbilli minax fleas in the muyunkum (siphonaptera)].by means of radioactive labelling and mechanical marking of fleas of x. g. minax it was established that they have four generations a year.20106228775
[territorial distribution of 2 sympathric species of fleas--parasites of the great gerbil in the kyzyl-kum desert].fleas of xenopsylla gerbilli and xenopsylla hirtipes, parasites of rhombonus optimus in the kizil--kum, have a sympathric distribution. within a greater part of their common area both species vicariate in landscapes: x. hirtipes occupties more mesophilous parts while x. gerbilli is distributed in all parts where the first species is missing. the distribution of x. hirtipes depends first of all on abiotic environmental factors and that of x. gerbilli--on biotic ones, i. e. on the competition with ...2010141029
[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 d ...2010492769
survey for rickettsiae within fleas of great gerbils, almaty oblast, kazakhstan.little is known of the endemicity of flea-borne rickettsiae in kazakhstan. thus, a survey for rickettsiae within great gerbil fleas was conducted in almaty oblast. high prevalence of rickettsia asembonensis was detected among xenopsylla gerbilli, demonstrating that flea-borne rickettsiae are endemic to southeastern kazakhstan. interestingly, no rickettsia typhi were detected in these same fleas.201727992288
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