Vector Field
Mostrando 13-24 de 253 artigos, teses e dissertações.
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13. First evidence of Zika virus venereal transmission in Aedes aegypti mosquitoes
BACKGROUND Aedes aegypti is considered the main Zika virus (ZIKV) vector, and is thought to be responsible for the 2015-2016 outbreak in Brazil. Zika positive Ae. aegypti males collected in the field suggest that vertical and/or venereal transmission of ZIKV may occur. OBJECTIVES In this study, we aimed to demonstrate that venereal transmission of ZIKV by
Mem. Inst. Oswaldo Cruz. Publicado em: 27/11/2017
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14. Attraction factors for Paederus fuscipes ' dispersal, a vector of Paederus dermatitis towards human residential premises
ABSTRACT Paederus fuscipes, a vector of Paederus dermatitis in most tropical and subtropical countries of the world have a high prevalence in human dwellings due to their positively phototaxic behaviour which has caused a tremendous impact on human health. In this paper, P. fuscipes dispersal flights were studied for two seasons of the rice cultivation phase
Rev. Inst. Med. trop. S. Paulo. Publicado em: 03/04/2017
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15. Bio-efficacy, physical integrity, community usage and washing practices of mosquito nets treated with ICON MAXX long-lasting insecticidal treatment in India
BACKGROUND New brands of potential long lasting insecticide nets (LLINs) and LLIN treatment kits require field evaluation before they are used in a vector control programme. OBJECTIVES The aim of this study was to evaluate the bio-efficacy, usage, washing practice and physical integrity of nets treated with LLIN treatment kit, ICON MAXX in a phase III fi
Mem. Inst. Oswaldo Cruz. Publicado em: 19/01/2017
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16. Mapping of courses on vector biology and vector-borne diseases systems: time for a worldwide effort
Major emergency efforts are being mounted for each vector-borne disease epidemiological crisis anew, while knowledge about the biology of arthropods vectors is dwindling slowly but continuously, as is the number of field entomologists. The discrepancy between the rates of production of knowledge and its use and need for solving crises is widening, in particu
Mem. Inst. Oswaldo Cruz. Publicado em: 13/10/2016
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17. Effects of environment, dietary regime and ageing on the dengue vector microbiota: evidence of a core microbiota throughout Aedes aegypti lifespan
Abstract Mosquito midgut microbiota is a key component of vector competence, as gut bacteria can disturb pathogen development. In this study, we addressed the microbiota composition of Aedes aegypti during its lifespan, under field conditions. We also investigated the possible effects of environment, dietary regime and ageing on the gut community composition
Mem. Inst. Oswaldo Cruz. Publicado em: 25/08/2016
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18. Susceptibility of Triatoma sordida Stal, 1859 (Hemiptera: Reduviidae) to alpha-cypermethrin under natural climatic conditions
Abstract:INTRODUCTION:Despite the recommendations by interpretation of resistance ratios obtained in laboratory bioassays, little is known about the actual impact of these results in the effectiveness of vector control activities in the field. In this context, our objective was to determine the mean value of different resistance ratios obtained by laboratory
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-08
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19. Effect of Leishmania spp infection on the survival, life expectancy, fecundity and fertility of Lutzomyia longipalpis s.l. and Lutzomyia pseudolongipalpis
We evaluated the effects of Leishmania spp infection on several population parameters of Lutzomyia longipalpis sensu lato and Lutzomyia pseudolongipalpis, vectors of visceral leishmaniasis in Venezuela, under experimental conditions during the first post-feeding period. Females of both species were allowed to feed and engorge on a suspension of fresh washed
Mem. Inst. Oswaldo Cruz. Publicado em: 30/06/2015
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20. Intrusive versus domiciliated triatomines and the challenge of adapting vector control practices against Chagas disease
Chagas disease prevention remains mostly based on triatomine vector control to reduce or eliminate house infestation with these bugs. The level of adaptation of triatomines to human housing is a key part of vector competence and needs to be precisely evaluated to allow for the design of effective vector control strategies. In this review, we examine how the
Mem. Inst. Oswaldo Cruz. Publicado em: 14/03/2015
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21. An overview of malaria transmission from the perspective of Amazon Anopheles vectors
In the Americas, areas with a high risk of malaria transmission are mainly located in the Amazon Forest, which extends across nine countries. One keystone step to understanding the Plasmodium life cycle in Anopheles species from the Amazon Region is to obtain experimentally infected mosquito vectors. Several attempts to colonise Ano- pheles species have been
Mem. Inst. Oswaldo Cruz. Publicado em: 13/02/2015
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22. Ecoepidemiology and biology of Eratyrus mucronatus Stål, 1859 (Hemiptera: Reduviidae: Triatominae), a sylvatic vector of Chagas disease in the Brazilian Amazon
Introduction Eratyrus mucronatus Stål, 1859 is a wild triatomine vector of Trypanosoma cruzi Chagas, 1909. However, little is known regarding the biology and ecoepidemiology of this triatomine in the Brazilian Amazon. The present study describes
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-12
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23. She’s a femme fatale: low-density larval development produces good disease vectors
Two hypotheses for how conditions for larval mosquitoes affect vectorial capacity make opposite predictions about the relationship of adult size and frequency of infection with vector-borne pathogens. Competition among larvae produces small adult females. The competition-susceptibility hypothesis postulates that small females are more susceptible to infectio
Mem. Inst. Oswaldo Cruz. Publicado em: 2014-12
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24. Potential for entomopathogenic fungi to control Triatoma dimidiata (Hemiptera: Reduviidae), a vector of Chagas disease in Mexico
Introduction The use of entomopathogenic fungi to control disease vectors has become relevant because traditional chemical control methods have caused damage to the environment and led to the development of resistance among vectors. Thus, this stu
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-12