Effect of irrigation and land reclamation in the karshi steppe uzbek ssr ussr on phlebotomus sand flies carriers of zoonotic cutaneous leishmaniasis causative agent

Zherikhina, I.I.; Dergacheva, T.I.; Eliseev, L.N.

Meditsinskaya Parazitologiya i Parazitarnye Bolezni 3: 27-33

1989


Accession: 007251485

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Abstract
Studies of land irrigation effect on Phlebotomus sand-flies, carries of Leishmania major (a zoonotic cutaneous leishmaniasis causative agent) .sbd. were performed for 15 field work periods, from 1967 and 1981, at 18 sites in various natural areas of the Karshi steppe (Uzbek SSR). Over 43500 sand-fly specimen were caught and identified. Regularities in sand-fly number changes, first of all, that of Ph. papatasi, after irrigation were determined, with respect to various proximity of great gerbils' settlements, where sand-flies breed in the irrigated fields. Well drained sites situated higher than irrigated fields are practically unaffected by irrigation, sand-flies number and specific composition being practically unchanged. At the sites situated either on the same level with irrigated fields or 3-5 m lower the number of sand-flies changes usually in 2 stages: 1) short-term increase in Ph. papatasi number at the very beginning of the irrigation period; 2) formation of stably high or low Phlebotomus numbers due to stabilization of hydrothermal regime in the holes of great gerbils.