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SEX PHEROMONE AND PERIOD GENE CHARACTERIZATION OF LUTZOMYIA LONGIPALPIS SENSU LATO (LUTZ & NEIVA) (DIPTERA: PSYCHODIDAE) FROM POSADAS, ARGENTINA
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Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias. Buenos Aires, Argentina.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Insetos. Rio de Janeiro, RJ. Brasil.
Keele University. Centre for Applied Entomology and Parasitology. Staffordshire, United Kingdom.
Universidad Nacional de Misiones. Laboratorio de Biologia Molecular Aplicada. Posadas, Argentina.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Insetos. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Insetos. Rio de Janeiro, RJ. Brasil.
Keele University. Centre for Applied Entomology and Parasitology. Staffordshire, United Kingdom.
Universidad Nacional de Misiones. Laboratorio de Biologia Molecular Aplicada. Posadas, Argentina.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Insetos. Rio de Janeiro, RJ. Brasil.
Abstract
Lutzomyia longipalpis s.l. is the primary vector of Leishmania (L.) infantum in the New World. In this study, male Lutzomyia longipalpis specimens from Posadas, Argentina were characterized for two polymorphic markers: the male sex pheromone and the period (per) gene. The male sex pheromone was identified as (S)-9-methylgermacrene-B, the same compound produced by Lu. longipalpis from Paraguay and many populations from Brazil. The analysis of per gene sequences revealed that the population from Argentina is significantly differentiated from previously studied Brazilian populations. Marker studies could contribute to the understanding of the distribution and spread of urban American visceral leishmaniasis, thus aiding in the design of regional surveillance and control strategies.
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