Host and/or site loyalty of <i>Lutzomyia whitmani</i> (Diptera: Psychodidae) in Brazil

Campbell-Lendrum, Diarmid; Brandão-Filho, Sinval Pinto; Ready, P. D.; Davies, Clive R.

doi:10.1046/j.1365-2915.1999.00169.x

Cited by 27 publications

(24 citation statements)

References 17 publications

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“…The preliminary study in 1997 showed the occurrence of eight species, of which L. wellcomei and L. ayrozai were not observed in the current study. L. complexa had not been found in this same area in the previ- In the study in Amaraji, southern Zona da Mata, Pernambuco State, L. whitmani predominates in the local fauna 22 , with direct evidence incriminating it as the principal vector in the transmission of the zoonotic ATL cycle in the region, among other reasons based on the finding of natural infection with L. braziliensis (Brandão Filho SP, unpublished data). Nevertheless, in the remnants of the primitive Atlantic Rain Forest, similar to the situation found in the CIMNC, L. complexa was the most abundant sandfly in this ecotope 8,10 , where it is likely that maintenance of the enzootic sylvatic cycle of L. braziliensis involves wild mammals.…”

Section: (V) Braziliensis Is the Main Etiological Agent Involved mentioning

confidence: 90%

Sandfly fauna in a military training area endemic for American tegumentary leishmaniasis in the Atlantic Rain Forest region of Pernambuco, Brazil

Andrade¹,

Valença

Silva

et al. 2005

Cad. Saúde Pública

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The aim of this study was to characterize the sandfly fauna in a military training area situated in the "Zona da Mata" region of Pernambuco State, Brazil, where human cases of American tegumentary leishmaniasis (ATL) had been observed, caused by Leishmania (Viannia) braziliensis. The occurrence of 16 sandfly species in the Marshall Newton Cavalcanti Military Training Camp (CIMNC) indicates an important diversity of sandfly species in this study area. Lutzomyia complexa was the most common species (51.36%) followed by L. choti (43.54%). All the captures were made in areas where training activities were conducted and where clinical cases had been detected in individuals performing training, following this period. The data relating the sandfly behavior to previous data in the same area provides strong evidence for the occurrence of an enzootic cycle of the parasite, and outbreaks followed the period of training activities in the remaining Atlantic Rain Forest and secondary forest areas.

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Section: (V) Braziliensis Is the Main Etiological Agent Involved mentioning

confidence: 90%

Sandfly fauna in a military training area endemic for American tegumentary leishmaniasis in the Atlantic Rain Forest region of Pernambuco, Brazil

Andrade¹,

Valença

Silva

et al. 2005

Cad. Saúde Pública

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“…The Zona da Mata has the majority of cases of American cutaneous leishmaniasis in the State, with some 60% of the total 7 . The phlebotomine sandfly fauna observed in the municipality of São Vicente Férrer presents an important diversity of species as compared to Amaraji, southern Zona da Mata, where L. whitmani, the main vector of L. (V.) braziliensis in Brazil, is the most prevalent sandfly species 11,12,13 . American cutaneous leishmaniasis is the only form of leish- maniasis observed in this municipality, where we conducted a longitudinal study for some ten years 7,8,11 .…”

Section: Discussionmentioning

confidence: 99%

Phlebotomine sandfly species from an American visceral leishmaniasis area in the Northern Rainforest region of Pernambuco State, Brazil

et al. 2007

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The aim of this study was to identify the fauna of phlebotomine sandflies in an area with incidence of American visceral leishmaniasis (AVL) in São Vicente Férrer, a municipality (county) located in the northern Zona da Mata in Pernambuco State, Brazil. Sandfly captures were conducted monthly for four nights/month from December 2002 to November 2003, by means of manual captures (with a Shannon trap) and by CDC light traps. A total of 23,156 specimens of phlebotomines sandflies were collected in a remnant of the Atlantic rainforest, houses, and animal shelters. Lutzomyia complexa was the most prevalent species, with a frequency of 62.5% (14,445/23,156), followed by Lutzomyia migonei, with 33.2% (7,677/23,156). No Lutzomyia longipalpis (the main vector of Leishmania chagasi in Brazil and the Americas) was found in the target area. Some specimens were dissected, but no Leishmania parasites were found.

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“…Once a plant has been colonised for cover, tsetse flies can live for months under appropriate microclimatic conditions, and infection rates with trypanosomes generally rises as the proportion of older flies increases in such populations (Leak and Rowlands, 1997). Emanations from the plant refuge that are of survival value for flies could serve to reinforce a learning process (Campbell-Lendrum et al, 1999) whereby experienced individuals would regularly return to the same refuge after a blood meal. The matter was aggravated when a weed like L. camara was introduced into Africa.…”

Section: Discussionmentioning

confidence: 99%

Tsetse flies are attracted to the invasive plant Lantana camara

Syed

Guérin

2004

Journal of Insect Physiology

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In tsetse both sexes feed exclusively on the blood of vertebrates for a few minutes every 2-3 days. Tsetse flies seek cover from high temperatures to conserve energy and plants provide shelter for tsetse in all the biotopes they occupy. Recently, tsetse have taken cover in plantations and under the invasive bush Lantana camara that has invaded large areas of the tsetse fly belt of Africa. Flies from such refugia are implicated in sleeping sickness epidemics. In a wind tunnel we show that both foliage and an extract of volatiles from foliage of L. camara attract three tsetse spp. from different habitats: Glossina fuscipes fuscipes (riverine), G. brevipalpis (sylvatic) and G. pallidipes (savannah).Gas chromatography analysis of volatiles extracted from leaves and flowers of L. camara coupled to electroantennograme recordings show that 1-octen-3-ol and b-caryophyllene are the major chemostimuli for the antennal receptor cells of the three tsetse spp. studied. A binary mixture of these products attracted these flies in the wind tunnel. The gas chromatography linked electroantennograme analysis of the L. camara extracts also show that the antennal receptor cells of the three tsetse spp. respond similarly to groups of volatiles derived from the major biosynthetic and catabolic pathways of plants, i.e. to mono-and sesquiterpenes, to lipoxidation products and to aromatics. Mixtures of these plant volatiles also attracted tsetse in the wind tunnel. These findings show that tsetse flies have conserved a strong sensitivity to volatile secondary products of plants, underlining the fundamental role of vegetation in tsetse survival.

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Host and/or site loyalty of Lutzomyia whitmani (Diptera: Psychodidae) in Brazil

Cited by 27 publications

References 17 publications

Sandfly fauna in a military training area endemic for American tegumentary leishmaniasis in the Atlantic Rain Forest region of Pernambuco, Brazil

Sandfly fauna in a military training area endemic for American tegumentary leishmaniasis in the Atlantic Rain Forest region of Pernambuco, Brazil

Phlebotomine sandfly species from an American visceral leishmaniasis area in the Northern Rainforest region of Pernambuco State, Brazil

Tsetse flies are attracted to the invasive plant Lantana camara

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