Flea (Siphonaptera) and mite (Gamasina) faunas of small mammals on territories of 'ecocide' and intensive economic development in south Vietnam

摘要

Fleas (1300 specimens) and mites (4500) were collected from 3162 small mammals caught in natural landscapes (tropical forest, grasslands) and agricultural lands, heathlands, and populated areas of south Vietnam [? in 1989-95]. The list of fleas fromwild mammals included about 30 species, and that of mites consists of about 20 species of the genus Laelaps. The small mammals inhabiting natural grasslands, agricultural and "ecocide" - exposed lands (Mus, Bandicota, Rattus) were not infested by fleasat all. Commensal rats were infested by Xenopsylla cheopis and by the mites Laelaps nuttalli, L. echidninus [L. echidnina], Ornithonyssus bacoti and Allodermanyssus muris [? Liponyssoides muris]. The most intensive ectoparasitic exchange between wild andcommensal rodents takes place in agricultural zones around small settlements. In the forests and savannas investigated there were no conditions for Yersinia pestis to exist due to the absence of specific fleas on small mammals.