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Entomological survey of plebotomine sand flies in a focus of visceral leishmaniasis in a regional centre of Portugal (Coimbra municipality)

Abstract number: P1001

Pereira M., Afonso O., Machado M., Sousa M.C.

Leishmaniasis, zoonoses caused by protozoans of the genus Leishmania, has been the object of considerable attention of both human and veterinary medicine. Leishmania parasites are transmitted by female sand flies of the genus Phlebotomus in the Old Word and Lutzomyia in the New Word. P. ariasi and P. perniciosus species are the biologic vectors of leishmaniasis canine in the Mediterranean basin include Portugal. An entomological survey of plebotomine sand flies was conducted in a focus area of canine leishmaniasis, in Coimbra municipality of Portugal. Standardised sampling with Centers for Disese Control (CDC) light traps was employed to determined monthly trends is species composition, density and sex ratio. A total of 992 sandflies (569 males and 353 females) were collected from June 2008 to October 2008. Four species representing two genera were identified: three Phlebotomus species (P. perniciosus, P. ariasi and P. sergenti) and one Sergentomyia species. Phlebotomus perniciosus was the predominant species, comprised 69% of the sand fly population, followed by P. ariasi (23.4%), S. minuta (7.3%) and P. sergenti (0.3%). A population peak (August) was observed for P. perniciosus, suggesting a uni-modal annual pattern. Considering the high density of P. perniciosus and P. ariasi, the area of Coimbra should be considered as a potential focus of L. infantum. Abundance was greatest in non urban areas and in the yard (68% of the phlebotomines captured), in the vicinity of households. This is the first description of plebotomine sand flies species in the municipality of Coimbra, in region centre of Portugal.

Session Details

Date: 16/05/2009
Time: 00:00-00:00
Session name: 19th European Congress of Clinical Microbiology and Infectious Diseases
Subject:
Location: Helsinki, Finland, 16 - 19 May 2009
Presentation type:
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