oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Toxicity of Bacillus species to larvae of Lutzomyia longipalpis (L. & N.) (Diptera: Psychodidae: Phlebotominae)
Wermelinger, Eduardo D.;Zanuncio, José C.;Rangel, Elizabeth F.;Cecon, Paulo R.;Rabinovitch, Leon;
Anais da Sociedade Entomológica do Brasil , 2000, DOI: 10.1590/S0301-80592000000300025
Abstract: a study was conducted to compare the susceptibility of third instar larvae of lutzomyia longipalpis (l. & n.) (diptera: psychodidae: phlebotominae), the vector of the american visceral leishmaniasis to two strains of bacillus thuringiensis serovar israelensis, one strain of bacillus sphaericus (all pathogenic to diptera culicidae) and a strain of b. thuringiensis ser. morrisoni (pathogenic to larvae of anticarsia gemmatalis (hübner) (lepidoptera: noctuidae)). larvae of l. longipalpis showed similar susceptibility to the two strains of b. thruringiensis ser. israelensis, while b. sphaericus and b. thuringiensis ser. morrisoni showed low and no larvicidal effect to this vector, respectively.
Development of Lutzomyia intermedia and Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae) larvae in different diets
WERMELINGER, E. D.;ZANUNCIO, J. C.;
Brazilian Journal of Biology , 2001, DOI: 10.1590/S1519-69842001000300009
Abstract: the objective of this research was to evaluate, in laboratory, the development of lutzomyia intermedia and lutzomyia longipalpis (diptera: psychodidae: phlebotominae) larvae, vectors of leishmaniasis in brazil, in the following diets: industrialized food for rabbits, dogs, hamsters and aquarium fishes, besides liver powder, cooked lettuce, wheat germ, beer yeast, oat, wheat bran and a diet denominated aged food. except wheat bran for l. intermedia, all diets provided adequate development for both species, which showed that any of them can be used in laboratory insectaries for these insects. l. intermedia showed better development with most nutritious diets and both species presented better development with aged food. fungi as an additional nutrient source for l. intermedia and l. longipalpis is suggested.
Development of Lutzomyia intermedia and Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae) larvae in different diets  [cached]
WERMELINGER E. D.,ZANUNCIO J. C.
Brazilian Journal of Biology , 2001,
Abstract: The objective of this research was to evaluate, in laboratory, the development of Lutzomyia intermedia and Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae) larvae, vectors of leishmaniasis in Brazil, in the following diets: industrialized food for rabbits, dogs, hamsters and aquarium fishes, besides liver powder, cooked lettuce, wheat germ, beer yeast, oat, wheat bran and a diet denominated aged food. Except wheat bran for L. intermedia, all diets provided adequate development for both species, which showed that any of them can be used in laboratory insectaries for these insects. L. intermedia showed better development with most nutritious diets and both species presented better development with aged food. Fungi as an additional nutrient source for L. intermedia and L. longipalpis is suggested.
Methodology for bioassay entomopathogenic Bacillus against sand fly (Diptera, Psychodidae, Phlebotominae) larvae
Wermelinger, Eduardo Dias;Zanuncio, José Cola;Rangel, Elizabeth F.;Cecon, Paulo R.;Rabinovitch, Leon;
Revista Brasileira de Zoologia , 2000, DOI: 10.1590/S0101-81752000000300026
Abstract: the objective of this research is to present a method to bioassay entomopathogenic bacillus species against sand fly (diptera, psychodidae, phlebotominae) larvae. the vector lutzomyia longipalpis (lutz & neiva, 1912) (diptera, psychodidae, phlebotominae) and some bacillus strains were used in laboratory to develop this method. some characteristics of this method are commented and the importance to develop a standard method to test pathogenicity of bacillus species against phlebotomine larvae is also discussed.
Description of Lutzomyia (Lutzomyia) falquetoi sp. nov. (Diptera: Psychodidae, Phlebotominae) a new species from the state of Espírito Santo, Brazil
Pinto, Israel de Souza;Santos, Claudiney Biral dos;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000006
Abstract: lutzomyia (lutzomyia) falquetoi, sp. nov. (diptera: psychodidae, phlebotominae) is described from the state of espírito santo, brazil. this new species belongs to the series longipalpis and is easily distinguished from the other members of this taxon by the presence of five well-developed spines and a pre-apical spiniform bristle on the gonostyle as well as nine bristles on the basal tuft of the gonocoxite.
The transmission of Leishmania infantum chagasi by the bite of the Lutzomyia longipalpis to two different vertebrates
Nagila FC Secundino, Vanessa C de Freitas, Carolina C Monteiro, Ana-Clara AM Pires, Bruna A David, Paulo FP Pimenta
Parasites & Vectors , 2012, DOI: 10.1186/1756-3305-5-20
Abstract: This study presents the establishment of a transmission model of Leishmania infantum chagasi by the bite of Lutzomyia longipalpis, the vector of American visceral leishmaniasis. The parasites were successfully transmitted by infected sandfly bites to mice and hamsters, indicating that both animals are good experimental models. The L. infantum chagasi dose that was transmitted in each single bite ranged from 10 to 10, 000 parasites, but 75% of the sandflies transmitted less than 300 parasites.The strategy for initiating infection by sandfly bite of experimental animals facilitates future investigations into the complex and dynamic mechanisms of visceral leishmaniasis. It is important to elucidate the transmission mechanism of vector bites. This model represents a useful tool to study L. infantum chagasi infection transmitted by the vector.Despite the fact that Leishmania is transmitted exclusively by sandfly vectors, a reproducible animal model of Leishmania infection transmitted by sandfly bite was only described in the year 2000 [1].Early investigations showed that infected P. papatasi sandflies can release from 0 to over 1,000 L. major promastigotes through their proboscides by forced feeding [2]. However, a transmission model by bite with P. duboscqui infected with L. major found that the parasite numbers inoculated in the host skin by one insect vector alone could vary from 10 to 100,000 [3].Considering the New World species of Leishmania, using a feeding device of chick skin membrane over culture medium showed that L. longipalpis sandflies infected with Leishmania mexicana (an unnatural vector/parasite pair) expelled an average of 1,000 parasites per fly [4]. Thus, even though L. longipalpis is the vector of L. infantum chagasi in nature, it is permissive in the laboratory to infection with other Leishmania species.In consideration of the continuing prevalence of American visceral leishmaniasis and the paucity of related studies in the literature, our goal was
Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae): a review
Soares, Rodrigo P. P.;Turco, Salvatore J.;
Anais da Academia Brasileira de Ciências , 2003, DOI: 10.1590/S0001-37652003000300005
Abstract: lutzomyia longipalpis is the most important vector of americanvisceral leishmaniasis (avl) due to leishmania chagasi in the new world. despite its importance, avl, a disease primarily of rural areas, has increased its prevalence and became urbanized in some large cities in brazil and other countries in latin america. although the disease is treatable, other control measures include elimination of infected dogs and the use of insecticides to kill the sand flies. a better understanding of vector biology could also account as one more tool for avl control. a wide variety of papers about l. longipalpis have been published in the recent past years. this review summarizes our current information of this particular sand fly regarding its importance, biology, morphology, pheromones genetics, saliva, gut physiology and parasite interactions.
Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae): a review  [cached]
Soares Rodrigo P. P.,Turco Salvatore J.
Anais da Academia Brasileira de Ciências , 2003,
Abstract: Lutzomyia longipalpis is the most important vector of AmericanVisceral Leishmaniasis (AVL) due to Leishmania chagasi in the New World. Despite its importance, AVL, a disease primarily of rural areas, has increased its prevalence and became urbanized in some large cities in Brazil and other countries in Latin America. Although the disease is treatable, other control measures include elimination of infected dogs and the use of insecticides to kill the sand flies. A better understanding of vector biology could also account as one more tool for AVL control. A wide variety of papers about L. longipalpis have been published in the recent past years. This review summarizes our current information of this particular sand fly regarding its importance, biology, morphology, pheromones genetics, saliva, gut physiology and parasite interactions.
Genetic Structure of Lutzomyia longipalpis Populations in Mato Grosso Do Sul, Brazil, Based on Microsatellite Markers  [PDF]
Mirella F. C. Santos, Paulo E. M. Ribolla, Diego P. Alonso, José D. Andrade-Filho, Aline E. Casaril, Alda M. T. Ferreira, Carlos E. S. Fernandes, Reginaldo P. Brazil, Alessandra G. Oliveira
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0074268
Abstract: Background Lutzomyia longipalpis (Diptera: Psychodidae) is the major vector of Leishmania (Leishmania) infantum and thus plays a crucial role in the epidemiology of American visceral leishmaniasis (AVL). This vector is the best studied species of sand fly in the Neotropical region. Many studies claim that this vector is in fact a species complex; however there is still no consensus regarding the number of species that belong into this complex or the geographical distribution of sibling species. The aim of the present study was to analyze the genetic relationships within?Lu. longipalpis?populations in the state of Mato Grosso do Sul (MS), Brazil. Methodology/Principal Findings We collected 30 Lu. longipalpis (15 females and 15 males) from five localities (Campo Grande, Três Lagoas, Aquidauana, Miranda and Bonito) and 30 Lu. Cruzi from Corumbá, totaling 180 sandflies from MS, and 30 Lu. longipalpis from Estrela de Alagoas, state of Alagoas (AL), Northeast Brazil. We show that eight previously described microsatellite loci were sufficient in distinguishing Lu. longipalpis from Lu. Cruzi, which is a closely related species, and in differentiating between Lu. longipalpis collected in MS versus Estrela de Alagoas. Analyses of the genotypes revealed introgression between sympatric Lu. longipalpis and Lu. Cruzi. Conclusions/Significance Our findings support the hypothesis of cryptic species within the Lu. longipalpis complex. Furthermore, our data revealed introgression between Lu. longipalpis and Lu. cruzi. This phenomenon should be further investigated to determine the level and incidence of hybridization between these two species. We also demonstrated that microsatellite markers are a powerful tool for differentiating sand fly populations and species. The present study has elucidated the population structure of Lu. longipalpis in MS and, by extension, the Neotropical Lu. longipalpis complex itself.
Description of Lutzomyia chotensis, a new species of Peruvian Phlebotominae (Diptera, Psychodidae)
Galati, Eunice A. Bianchi;Cáceres, Abraham G.;Zorrilla, Victor;
Revista Brasileira de Entomologia , 2003, DOI: 10.1590/S0085-56262003000400011
Abstract: lutzomyia chotensis sp. nov. (diptera, psychodidae, phlebotominae) from cajamarca department, peru, is described and its taxonomic position discussed.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.