Publications

TitleAbstractYear
Filter
PMID
Filter
current and future niche of north and central american sand flies (diptera: psychodidae) in climate change scenarios.ecological niche models are useful tools to infer potential spatial and temporal distributions in vector species and to measure epidemiological risk for infectious diseases such as the leishmaniases. the ecological niche of 28 north and central american sand fly species, including those with epidemiological relevance, can be used to analyze the vector's ecology and its association with transmission risk, and plan integrated regional vector surveillance and control programs. in this study, we mod ...201324069478
proceedings of the ix international symposium on phlebotomine sandflies (isops ix), reims, france, june 28th-july 1st, 2016. 201627677701
sand-fly saliva-leishmania-man: the trigger trio.leishmaniases are worldwide diseases transmitted to the vertebrate host by the bite of an infected sand-fly. sand-fly biting and parasite inoculation are accompanied by the injection of salivary molecules, whose immunomodulatory properties are actively being studied. this mini review focuses on how the interactions between sand-fly saliva and the immune system may shape the outcome of infection, given its immunomodulatory properties, in experimental models and in the endemic area. additionally, ...201324312093
diversity and distribution of sandflies (diptera: psychodidae: phlebotominae) in a military area in the state of amazonas, brazil.this study reports the distribution, ecotopes and fauna diversity of sandflies captured in five training bases on a military reserve in manaus, state of amazonas (am). a total of 10,762 specimens were collected, which were distributed among 58 species, with the highest number recorded at base instruction 1 (bi1). a higher rate of species richness was found at the base instruction boina rajada and low levels of diversity associated with a high abundance index with the clear dominance of lutzomyia ...023903983
texas and mexico: sharing a legacy of poverty and neglected tropical diseases. 201222479656
anthropogenic influence on the distribution, abundance and diversity of sandfly species (diptera: phlebotominae: psychodidae), vectors of cutaneous leishmaniasis in panama.in panama, species of the genus lutzomyia are vectors of american cutaneous leishmaniasis (acl). there is no recent ecological information that may be used to develop tools for the control of this disease. thus, the goal of this study was to determine the composition, distribution and diversity of lutzomyia species that serve as vectors of acl. sandfly sampling was conducted in forests, fragmented forests and rural environments, in locations with records of acl. lutzomyia gomezi, lutzomyia panam ...201122241128
current knowledge of leishmania vectors in mexico: how geographic distributions of species relate to transmission areas.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 ni ...201122049037
[phlebotomine fauna (diptera: psychodidae) in a campina reserve in the state of amazonas, and its epidemiological importance].in brazil, the largest diversity of phlebotomines is found in the amazon region, particularly in undisturbed terra-firma forest. however, the phlebotomine fauna in other ecosystems of this region is still not well known.201020305974
molecular diversity between salivary proteins from new world and old world sand flies with emphasis on bichromomyia olmeca, the sand fly vector of leishmania mexicana in mesoamerica.sand fly saliva has been shown to have proteins with potent biological activities, salivary proteins that can be used as biomarkers of vector exposure, and salivary proteins that are candidate vaccines against different forms of leishmaniasis. sand fly salivary gland transcriptomic approach has contributed significantly to the identification and characterization of many of these salivary proteins from important leishmania vectors; however, sand fly vectors in some regions of the world are still ...201627409591
sand flies naturally infected by leishmania (l.) mexicana in the peri-urban area of chetumal city, quintana roo, méxico.the surveillance of prevalent leishmania sand fly vectors is an important issue for epidemiological studies in populated areas where leishmaniasis is endemic. in this study, we collected sand flies from a peri-urban area in the southeast of mexico. natural infection with leishmania (l.) mexicana was studied by pcr using a leishmania internal transcribed spacer of the ribosomal rna gene for amplification. infected lutzomyia olmeca olmeca, lu. shannoni and lu. cruciata sand flies were collected ma ...201020171709
using biotic interaction networks for prediction in biodiversity and emerging diseases.networks offer a powerful tool for understanding and visualizing inter-species ecological and evolutionary interactions. previously considered examples, such as trophic networks, are just representations of experimentally observed direct interactions. however, species interactions are so rich and complex it is not feasible to directly observe more than a small fraction. in this paper, using data mining techniques, we show how potential interactions can be inferred from geographic data, rather th ...200919478956
pathogenic landscape of transboundary zoonotic diseases in the mexico-us border along the rio grande.transboundary zoonotic diseases, several of which are vector borne, can maintain a dynamic focus and have pathogens circulating in geographic regions encircling multiple geopolitical boundaries. global change is intensifying transboundary problems, including the spatial variation of the risk and incidence of zoonotic diseases. the complexity of these challenges can be greater in areas where rivers delineate international boundaries and encompass transitions between ecozones. the rio grande serve ...201425453027
transmission of leishmania metacyclic promastigotes by phlebotomine sand flies.a thorough understanding of the transmission mechanism of any infectious agent is crucial to implementing an effective intervention strategy. here, our current understanding of the mechanisms that leishmania parasites use to ensure their transmission from sand fly vectors by bite is reviewed. the most important mechanism is the creation of a "blocked fly" resulting from the secretion of promastigote secretory gel (psg) by the parasites in the anterior midgut. this forces the sand fly to regurgit ...200717517415
incrimination of four sandfly species previously unrecognized as vectors of leishmania parasites in mexico.cutaneous leishmaniasis (cl) is endemic to the yucatan peninsula of mexico. the main causative agent is the parasite leishmania mexicana (biagi) (kinetoplastida: trypanosomatidae) and, based on the classic work of dr biagi's research team, it has been generally accepted and frequently reported that the only vector of l. mexicana in the region is the sandfly lutzomyia olmeca olmeca (vargas & diáz-nájera) (diptera: psychodidae). evidence gathered from recent entomological studies conducted mainly ...201020604861
two separate growth phases during the development of leishmania in sand flies: implications for understanding the life cycle.the life cycle of leishmania alternates between two main morphological forms: intracellular amastigotes in the mammalian host and motile promastigotes in the sand fly vector. several different forms of promastigote have been described in sandfly infections, the best known of these being metacyclic promastigotes, the mammal-infective stages. here we provide evidence that for leishmania (leishmania) mexicana and leishmania (leishmania) infantum (syn. chagasi) there are two separate, consecutive gr ...200313129524
lutzomyia sand fly diversity and rates of infection by wolbachia and an exotic leishmania species on barro colorado island, panama.sand flies (diptera, psychodidae, phlebotominae) in the genus lutzomyia are the predominant vectors of the protozoan disease leishmaniasis in the new world. within the watershed of the panama canal, the cutaneous form of leishmaniasis is a continuous health threat for residents, tourists and members of an international research community. here we report the results of screening a tropical forest assemblage of sand fly species for infection by both leishmania and a microbe that can potentially se ...201020231892
[sandfly fauna (diptera: psychodidae) in a focus of american cutaneous leishmaniasis on the urban periphery of manaus, state of amazonas].from august 2001 to july 2002, sand flies were collected from the bases of trees and, using cdc and disney traps, from areas surrounding homes and forested areas in the são joão community, on the urban periphery of manaus, state of amazonas. 4,104 specimens belonging to four subtribes, 13 genera and 49 species of the phlebotominae subfamily were collected. the subtribe psychodopygina predominated, with 3,403 (83%) specimens, especially of nyssomyia umbratilis, nyssomyia anduzei, trichophoromyia ...200819009191
relative abundances of sandfly species (diptera: phlebotominae) in two villages in the same area of campeche, in southern mexico.leishmania mexicana is the parasite causing most cases of human cutaneous leishmaniasis in southern mexico, where lutzomyia olmeca olmeca and lu. cruciata are the most probable vectors. in the present study, sandflies were collected during one transmission season (november 2001-march 2002) in the village of la guadalupe and the nearby village of dos naciones, in the southern mexican county of calakmul. using shannon traps, disney traps and cdc light traps, 5983 sandflies (brumptomyia and lutzomy ...200515814038
observations on the parasite leishmania mexicana amazonensis and its natural infection of the sand fly lutzomyia olmeca nociva. 19873607352
characterization and classification of leishmanial parasites from humans, wild mammals, and sand flies in the amazon region of brazil.ninety-four leishmanial isolates from the brazilian amazon region (amapá, amazonas, pará, and rondônia) were identified and classified using specific monoclonal antibodies and an indirect radioimmunoassay (serodeme analysis); eighty-two were also characterized by enzyme electrophoresis (zymodeme analysis), the results of which were subjected to a numerical phenetic analysis. six isolates from humans (3), didelphis marsupialis (1), lutzomyia olmeca nociva (1), and lu, reducta (1) showed reactivit ...19911858968
assessing the importance of four sandfly species (diptera: psychodidae) as vectors of leishmania mexicana in campeche, mexico.localized cutaneous leishmaniasis represents a public health problem in many areas of mexico, especially in the yucatan peninsula. an understanding of vector ecology and bionomics is of great importance in evaluations of the transmission dynamics of leishmania parasites. a field study was conducted in the county of calakmul, state of campeche, during the period from november 2006 to march 2007. phlebotomine sandfly vectors were sampled using centers for disease control light traps, baited disney ...201627040367
sand fly fauna in chapare, bolivia: an endemic focus of leishmania (viannia) braziliensis.data on the distribution and abundance of lutzomyia spp. (diptera: psychodidae) in bolivia is scarce. sand flies from an area of leishmania (viannia) braziliensis endemicity in the isiboro-secure national park in the department of cochabamba were captured and identified to species. in total, 945 sand flies (789 females and 156 males) belonging to 15 species were collected from the four collection points in two study villages in 2007. with 549 (58.1%) specimens, lutzomyia shawi was the most abund ...201223025199
american cutaneous leishmaniasis in panama: a historical review of entomological studies on anthropophilic lutzomyia sand fly species.we review existing information on the epidemiology of american cutaneous leishmaniasis (acl) in panama, with emphasis on the bionomics of anthropophilic lutzomyia sand fly species. evidence from panamanian studies suggests that there are six anthropophilic species in the country: lutzomyia trapidoi, lu. panamensis, lu. gomezi, lu. ylephiletor, lu. sanguinaria and lu. pessoana (henceforth lu. carrerai thula). in general, these taxa are abundant, widespread and feed opportunistically on their host ...201424886629
ecological niche modelling predicts southward expansion of lutzomyia (nyssomyia) flaviscutellata (diptera: psychodidae: phlebotominae), vector of leishmania (leishmania) amazonensis in south america, under climate change.vector borne diseases are susceptible to climate change because distributions and densities of many vectors are climate driven. the amazon region is endemic for cutaneous leishmaniasis and is predicted to be severely impacted by climate change. recent records suggest that the distributions of lutzomyia (nyssomyia) flaviscutellata and the parasite it transmits, leishmania (leishmania) amazonensis, are expanding southward, possibly due to climate change, and sometimes associated with new human inf ...201526619186
recent advances in phlebotomine sand fly research related to leishmaniasis control.phlebotomine sand flies are the subject of much research because of the role of their females as the only proven natural vectors of leishmania species, the parasitic protozoans that are the causative agents of the neglected tropical disease leishmaniasis. activity in this field was highlighted by the eighth international symposium on phlebotomine sand flies (isops) held in september 2014, which prompted this review focusing on vector control. topics reviewed include: taxonomy and phylogenetics, ...201525885217
catalogue of the type material of phlebotominae (diptera, psychodidae) deposited in the instituto evandro chagas, brazil.the available type material of phlebotominae (diptera, psychodidae) deposited in the "coleção de flebotomíneos" of the instituto evandro chagas (colfleb iec) is now presented in an annotated catalogue comprising a total of 121 type specimens belonging to 12 species as follow: nyssomyia richardwardi (2 female paratypes), nyssomyia shawi (9 male and 25 female paratypes), nyssomyia umbratilis (female holotype and 1 female paratype), nyssomyia yuilli yuilli (1 male and 1 female paratypes), pintomyia ...201424715786
phlebotomine sandflies (diptera: psychodidae) from lábrea, state of amazonas, brazil, with a description of evandromyia (aldamyia) apurinan shimabukuro, figueira & silva, sp. nov.an entomological survey was conducted from july-december 2009 and september-december 2010, as part of the epidemiological monitoring of american cutaneous leishmaniasis (acl) in the municipality of lábrea, state of amazonas (am), brazil. sandflies were collected using cdc light traps installed in intra and peridomiciliary locations, as well as the border of forested areas around houses where autochthonous cases of acl were recorded. a total of 510 sandflies belonging to 26 species were collected ...023778658
the phlebotomine sandflies of venezuelan amazonia.phlebotomine sandflies were surveyed in two ecologically contrasted areas, the northern moist and southern wet tropical forests, of the territorio federal amazonas, venezuela. three new taxa and twenty-one new records were added to the previously known species list for venezuelan sandflies, which now totals eighty species. both sexes of lutzomyia (psychodopygus) killicki sp.n., l. (trichophoryomyia) bettinii sp.n., l. (nyssomyia) olmeca reducta subsp.n. and and the females of l. bernalei osorno ...19882980159
Displaying items 1 - 28 of 28