Phlebotomine sandflies and leishmaniasis in British honduras (Belize)

Abstract Abstract Abstract The phlebotomine sandfly fauna of a primary forest reserve at Morretes (eastern Paraná State) was studied, using CDC-like light traps, one night per month, at canopy and ground level, between April 1995 and March 1996. A total of 3,106 insects were collected, identified as belonging to nine species. Lutzomyia ayrozai and Lu. geniculata were predominant, seven other species also being present. Monthly mean temperature, rainfall and the temperature of the collection night significantly influenced the numbers of Lu. ayrozai while the two first factors influenced the numbers of Lu. geniculata, besides the collected quantities of females of the two species. The influence of the factors on Lu. ayrozai numbers was more immediate than in those of Lu. geniculata. Numbers of both species and of the females of Lu. geniculata collected in different seasons, but not at the different heights, varied significantly. Differences between the behaviour of Lu. ayrozai in Morretes and in other regions could be attributed to environmental differences and/or to regional variations in the species, which could constitute species complexes. Hourly variations of collections were different in the species and seasons. Key-words: Key-words: Key-words: Key-words: Key-words: Phlebotominae. Fauna. Seasonal variation. Psychodidae. Height influence. Lutzomyia. Resumo Resumo ResumoResumo Resumo A fauna de flebotomíneos de uma reserva de floresta primária em Morretes (leste do Estado do Paraná) foi estudada, utilizando armadilhas luminosas tipo CDC, uma noite por mês, no nível do solo e da copa, entre abril de 1995 e março de 1996. Um total de 3.106 insetos foi coletado. Lu. ayrozai e Lu. geniculata foram predominantes, além de outras sete espécies. A temperatura média mensal, a pluviosidade e a temperatura na noite de coleta influenciaram significativamente as quantidades de Lu. ayrozai e os dois primeiros fatores influenciaram Lu. geniculata, além das quantidades de fêmeas coletadas de ambas as espécies. A influência do aumento dos fatores nas quantidades de Lu. ayrozai foi mais imediata que nas de Lu. geniculata. As quantidades coletadas de ambas as espécies e das fêmeas de Lu. geniculata nas estações, mas não nas alturas, foram significativamente diferentes. As diferenças entre os comportamentos de Lu. ayrozai em Morretes e em outras regiões poderiam ser atribuídas a diferenças ambientais e/ou a variações regionais na espécie, que poderia constituir um complexo de espécies. As variações horárias nas coletas foram diferentes nas espécies e estações.

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“…No flagellates were found in 19 dissected females of Lu. geniculata from Belize 48 . Several specimens of Lu.…”

Section: Resultsmentioning

confidence: 99%

Ecology of Phlebotomine sandflies (Diptera, Psychodidae) in Brazilian Atlantic Forest

Marcondes

Santos-Neto

Lozovei

2001

Rev. Soc. Bras. Med. Trop.

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“…1977b;Ready & Arias, unpublished data) . Vector and anthropophilic species have been shown to have different biting and population peaks at different heights in the forest from Belize, British Honduras (Disney, 1968;Williams. 1970), andPanama (Johnson ei al., 1963;That cher, 1968;Chaniotis ef al., 1971aChaniotis ef al., , 1971b to Brazil (Shaw ef al., 1968;Arias & Freitas 1978).…”

Section: Discussionmentioning

confidence: 99%

“…(1 ) - Sand fly stratification in other regions of the New World has been done by Disney (1963), Williams (1970), Chaniotis ef al (1971aChaniotis ef al ( , 1971b, Shaw ef al. (1972), and near…”

Section: Introductionmentioning

confidence: 99%

On the vectors of cutaneous leishmaniasis in the Central Amazon of Brasil. 3. Phlebotomine sand fly stratification in a terra firme forest

Árias

Freitas

1982

Acta Amaz.

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“…18 Lutzomyia cruciata is a suspected leishmaniasis vector in Nicaragua and Belize, and its abundances at some collecting sites in the Yucatan Peninsula exceed those of the known vector species. [19][20][21][22][23] Other species that feed on humans and that have been found infected with Leishmania in Central America include Lu . panamensis, Lu.…”

Section: Introductionmentioning

confidence: 99%

Current Knowledge of Leishmania Vectors in Mexico: How Geographic Distributions of Species Relate to Transmission Areas

González¹,

Rebollar-Téllez²,

Ibáñez-Bernal³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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Leishmaniases are a group of vector-borne diseases with different clinical manifestations caused by parasites transmitted by sand fly vectors. In Mexico, the sand fly Lutzomyia olmeca olmeca is the only vector proven to transmit the parasite Leishmania mexicana to humans, which causes leishmaniasis. Other vector species with potential medical importance have been obtained, but their geographic distributions and relation to transmission areas have never been assessed. We modeled the ecological niches of nine sand fly species and projected niches to estimate potential distributions by using known occurrences, environmental coverages, and the algorithms GARP and Maxent. All vector species were distributed in areas with known recurrent transmission, except for Lu. diabolica, which appeared to be related only to areas of occasional transmission in northern Mexico. The distribution of Lu. o. olmeca does not overlap with all reported cutaneous leishmaniasis cases, suggesting that Lu. cruciata and Lu. shannoni are likely also involved as primary vectors in those areas. Our study provides useful information of potential risk areas of leishmaniasis transmission in Mexico.

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Phlebotomine sandflies and leishmaniasis in British honduras (Belize)

Cited by 65 publications

References 60 publications

Ecology of Phlebotomine sandflies (Diptera, Psychodidae) in Brazilian Atlantic Forest

Ecology of Phlebotomine sandflies (Diptera, Psychodidae) in Brazilian Atlantic Forest

On the vectors of cutaneous leishmaniasis in the Central Amazon of Brasil. 3. Phlebotomine sand fly stratification in a terra firme forest

Current Knowledge of Leishmania Vectors in Mexico: How Geographic Distributions of Species Relate to Transmission Areas

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