Open AccessPlague Microbe Aggregation in the Organism of Fleas (Siphonaptera) with Different Vector Ability
Author(s) -
Л. П. Базанова,
A. Ya. Nikitin
Publication year - 2012
Publication title -
problemy osobo opasnyh infekcij
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.16
H-Index - 3
eISSN - 2658-719X
pISSN - 0370-1069
DOI - 10.21055/0370-1069-2012-4-15-17
Subject(s) - plague (disease) , yersinia pestis , subspecies , biology , zoology , virology , microbiology and biotechnology , virulence , geography , genetics , archaeology , gene
The following factors have been used to characterize 12 species and subspecies of fleas (Siphonaptera) and plague microbe (Yersinia pestis subs. pestis): the proportion of fleas with “blocks”, “blockules” and their ratio, called the index of microbe aggregation. The block formation is registered in 10, whereas formation of blockules are registered in all of the studied species and subspecies of Siphonaptera , the difference between active and passive transmitters according to the last characteristics being unreliable. The fleas, among of which “blocked” ones are not revealed in the experiments, are capable to transmit the causative agent of plague, sometimes with generalization of infectious process in animals, that can provide for continuous transmission of microbe without formation of “blocks” in the proventriculus. Thus, the high value of “rate of block formation” does not reflect the existence of coevolution in the interactions between microbe and its transmitter.