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PubMed1988

Development of Leishmania major in the phlebotomine sandflies, Phlebotomus papatasi (Scopoli) and Phlebotomus langeroni (Nitzulescu).

Laboratory bred Phlebolomus papatasi and P. langeroni were examined for their susceptibility to develop Leishmania major promastigotes under laboratory conditions. Promastigotes were demonstrated in the gut of both species when they were given sugar 24 hr before or after an infective blood meal and in flies offered only an infective blood. The overall infection rate was slightly higher in P. langeroni than P. papatasi. Head promastigotes were detected in P. papatasi provided with sugar 24 hr before or after an infective blood meal. No head promastigotes were seen in flies offered only infective blood. In P. langeroni, head promastigotes were only seen in flies fed on sugar before or after an infective blood and maintained at 18 degrees C. Results indicate that sugar plays a major role in the migration of parasites from the gut to the head. Temperature may have a marginal effect on the migration process. Attempts to transmit L. major to hamster by the bite of infected P. papatasi were not successful.

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