The Experts below are selected from a list of 21786 Experts worldwide ranked by ideXlab platform

Mamadou B Coulibaly - One of the best experts on this subject based on the ideXlab platform.

  • improved biogents sentinel trap with heat bgsh for outdoor collections of anopheline species in burkina faso and mali west africa
    Parasites & Vectors, 2021
    Co-Authors: Amadou Guindo, Ps Epopa, S Doumbia, Abdoulazize Millogo, Brehima Diallo, Franck Yao, Bilkissou Yagoure, Frederic Tripet, Abdoulaye Diabate, Mamadou B Coulibaly
    Abstract:

    Since the late 1990s, malaria control programmes have relied extensively on mass bednet distribution and indoor residual spraying. Both interventions use pesticides and target mosquitoes coming indoors either to feed or to rest. Unfortunately, these intensified vector control campaigns have resulted in mosquito populations with high levels of resistance to most of the chemical compounds used against them and which are increasingly exophagic and exophillic, hence difficult to monitor indoors. Consequently, there is an urgent need for novel tools to sample outdoor anopheline populations for monitoring interventions and disease surveillance programmes. In this study, we tested several modifications and configurations of the BioGents® Sentinel (BGS) trap, designed with the aim to increase its efficacy for sampling malaria vector species. Traps were used with chemical attractants and CO2, and the impacts of trap position, trap Colour contrast Combination and the addition of a heat source were tested in two studies conducted in the Sudano-Sahelian region of Burkina Faso and Mali. The results show that of all the configurations tested, the addition of a heat source to the BGS trap with the original Colour Combination and an upward positioning resulted in a 1.8- and 5.9-fold increase in host-seeking Anopheles gambiae (s.l.) females in the experiments performed in Burkina Faso and Mali, respectively. BGS with heat traps, referred to as BGSH traps, captured An. gambiae (s.l.), An. pharoensis, An. coustani, Culex and Mansonia spp. Importantly, the results suggest that their efficacy does not depend on the close proximity of nearby hosts in houses. The results suggest that BGSH traps can be an effective scalable tool for sampling outdoor anopheline vector populations. Further developments enabling CO2 and heat generation for longer periods of time would further improve the trap’s versatility for large-scale surveillance programmes.

L Bisigello - One of the best experts on this subject based on the ideXlab platform.

  • euclid the selection of quiescent and star forming galaxies using observed Colours
    Monthly Notices of the Royal Astronomical Society, 2020
    Co-Authors: A Humphrey, L Bisigello, Ulrike Kuchner, S Andreon, M Bolzonella, B Garilli, Claudia Maraston, Christopher J. Conselice, Marta Moresco
    Abstract:

    The Euclid mission will observe well over a billion galaxies out to z ∼ 6 and beyond. This will offer an unrivalled opportunity to investigate several key questions for understanding galaxy formation and evolution. The first step for many of these studies will be the selection of a sample of quiescent and star-forming galaxies, as is often done in the literature by using well-known Colour techniques such as the ‘UVJ’ diagram. However, given the limited number of filters available for the Euclid telescope, the recovery of such rest-frame Colours will be challenging. We therefore investigate the use of observed Euclid Colours, on their own and together with ground-based u-band observations, for selecting quiescent and star-forming galaxies. The most efficient Colour Combination, among the ones tested in this work, consists of the (u − VIS) and (VIS − J) Colours. We find that this Combination allows users to select a sample of quiescent galaxies complete to above ∼70 per cent and with less than 15 per cent contamination at redshifts in the range 0.75 65 per cent completeness level and contamination below 20 per cent at 1 < z < 2 for finding quiescent galaxies. In comparison, the sample of quiescent galaxies selected with the traditional UVJ technique is only ∼20 per cent complete at z < 3, when recovering the rest-frame Colours using mock Euclid observations. This shows that our new methodology is the most suitable one when only Euclid bands, along with u-band imaging, are available.

  • euclid the selection of quiescent and star forming galaxies using observed Colours
    arXiv: Astrophysics of Galaxies, 2020
    Co-Authors: L Bisigello, A Humphrey, Ulrike Kuchner, S Andreon, M Bolzonella, B Garilli, Claudia Maraston, Marta Moresco, Christopher J. Conselice
    Abstract:

    The Euclid mission will observe well over a billion galaxies out to $z\sim6$ and beyond. This will offer an unrivalled opportunity to investigate several key questions for understanding galaxy formation and evolution. The first step for many of these studies will be the selection of a sample of quiescent and star-forming galaxies, as is often done in the literature by using well known Colour techniques such as the `UVJ' diagram. However, given the limited number of filters available for the Euclid telescope, the recovery of such rest-frame Colours will be challenging. We therefore investigate the use of observed Euclid Colours, on their own and together with ground-based u-band observations, for selecting quiescent and star-forming galaxies. The most efficient Colour Combination, among the ones tested in this work, consists of the (u-VIS) and (VIS-J) Colours. We find that this Combination allows users to select a sample of quiescent galaxies complete to above $\sim70\%$ and with less than 15$\%$ contamination at redshifts in the range $0.75 65\%$ completeness level and contamination below 20$\%$ at $1Colours using mock Euclid observations. This shows that our new methodology is the most suitable one when only Euclid bands, along with u-band imaging, are available.

Marta Moresco - One of the best experts on this subject based on the ideXlab platform.

  • euclid the selection of quiescent and star forming galaxies using observed Colours
    Monthly Notices of the Royal Astronomical Society, 2020
    Co-Authors: A Humphrey, L Bisigello, Ulrike Kuchner, S Andreon, M Bolzonella, B Garilli, Claudia Maraston, Christopher J. Conselice, Marta Moresco
    Abstract:

    The Euclid mission will observe well over a billion galaxies out to z ∼ 6 and beyond. This will offer an unrivalled opportunity to investigate several key questions for understanding galaxy formation and evolution. The first step for many of these studies will be the selection of a sample of quiescent and star-forming galaxies, as is often done in the literature by using well-known Colour techniques such as the ‘UVJ’ diagram. However, given the limited number of filters available for the Euclid telescope, the recovery of such rest-frame Colours will be challenging. We therefore investigate the use of observed Euclid Colours, on their own and together with ground-based u-band observations, for selecting quiescent and star-forming galaxies. The most efficient Colour Combination, among the ones tested in this work, consists of the (u − VIS) and (VIS − J) Colours. We find that this Combination allows users to select a sample of quiescent galaxies complete to above ∼70 per cent and with less than 15 per cent contamination at redshifts in the range 0.75 65 per cent completeness level and contamination below 20 per cent at 1 < z < 2 for finding quiescent galaxies. In comparison, the sample of quiescent galaxies selected with the traditional UVJ technique is only ∼20 per cent complete at z < 3, when recovering the rest-frame Colours using mock Euclid observations. This shows that our new methodology is the most suitable one when only Euclid bands, along with u-band imaging, are available.

  • euclid the selection of quiescent and star forming galaxies using observed Colours
    arXiv: Astrophysics of Galaxies, 2020
    Co-Authors: L Bisigello, A Humphrey, Ulrike Kuchner, S Andreon, M Bolzonella, B Garilli, Claudia Maraston, Marta Moresco, Christopher J. Conselice
    Abstract:

    The Euclid mission will observe well over a billion galaxies out to $z\sim6$ and beyond. This will offer an unrivalled opportunity to investigate several key questions for understanding galaxy formation and evolution. The first step for many of these studies will be the selection of a sample of quiescent and star-forming galaxies, as is often done in the literature by using well known Colour techniques such as the `UVJ' diagram. However, given the limited number of filters available for the Euclid telescope, the recovery of such rest-frame Colours will be challenging. We therefore investigate the use of observed Euclid Colours, on their own and together with ground-based u-band observations, for selecting quiescent and star-forming galaxies. The most efficient Colour Combination, among the ones tested in this work, consists of the (u-VIS) and (VIS-J) Colours. We find that this Combination allows users to select a sample of quiescent galaxies complete to above $\sim70\%$ and with less than 15$\%$ contamination at redshifts in the range $0.75 65\%$ completeness level and contamination below 20$\%$ at $1Colours using mock Euclid observations. This shows that our new methodology is the most suitable one when only Euclid bands, along with u-band imaging, are available.

Amadou Guindo - One of the best experts on this subject based on the ideXlab platform.

  • improved biogents sentinel trap with heat bgsh for outdoor collections of anopheline species in burkina faso and mali west africa
    Parasites & Vectors, 2021
    Co-Authors: Amadou Guindo, Ps Epopa, S Doumbia, Abdoulazize Millogo, Brehima Diallo, Franck Yao, Bilkissou Yagoure, Frederic Tripet, Abdoulaye Diabate, Mamadou B Coulibaly
    Abstract:

    Since the late 1990s, malaria control programmes have relied extensively on mass bednet distribution and indoor residual spraying. Both interventions use pesticides and target mosquitoes coming indoors either to feed or to rest. Unfortunately, these intensified vector control campaigns have resulted in mosquito populations with high levels of resistance to most of the chemical compounds used against them and which are increasingly exophagic and exophillic, hence difficult to monitor indoors. Consequently, there is an urgent need for novel tools to sample outdoor anopheline populations for monitoring interventions and disease surveillance programmes. In this study, we tested several modifications and configurations of the BioGents® Sentinel (BGS) trap, designed with the aim to increase its efficacy for sampling malaria vector species. Traps were used with chemical attractants and CO2, and the impacts of trap position, trap Colour contrast Combination and the addition of a heat source were tested in two studies conducted in the Sudano-Sahelian region of Burkina Faso and Mali. The results show that of all the configurations tested, the addition of a heat source to the BGS trap with the original Colour Combination and an upward positioning resulted in a 1.8- and 5.9-fold increase in host-seeking Anopheles gambiae (s.l.) females in the experiments performed in Burkina Faso and Mali, respectively. BGS with heat traps, referred to as BGSH traps, captured An. gambiae (s.l.), An. pharoensis, An. coustani, Culex and Mansonia spp. Importantly, the results suggest that their efficacy does not depend on the close proximity of nearby hosts in houses. The results suggest that BGSH traps can be an effective scalable tool for sampling outdoor anopheline vector populations. Further developments enabling CO2 and heat generation for longer periods of time would further improve the trap’s versatility for large-scale surveillance programmes.

Ps Epopa - One of the best experts on this subject based on the ideXlab platform.

  • improved biogents sentinel trap with heat bgsh for outdoor collections of anopheline species in burkina faso and mali west africa
    Parasites & Vectors, 2021
    Co-Authors: Amadou Guindo, Ps Epopa, S Doumbia, Abdoulazize Millogo, Brehima Diallo, Franck Yao, Bilkissou Yagoure, Frederic Tripet, Abdoulaye Diabate, Mamadou B Coulibaly
    Abstract:

    Since the late 1990s, malaria control programmes have relied extensively on mass bednet distribution and indoor residual spraying. Both interventions use pesticides and target mosquitoes coming indoors either to feed or to rest. Unfortunately, these intensified vector control campaigns have resulted in mosquito populations with high levels of resistance to most of the chemical compounds used against them and which are increasingly exophagic and exophillic, hence difficult to monitor indoors. Consequently, there is an urgent need for novel tools to sample outdoor anopheline populations for monitoring interventions and disease surveillance programmes. In this study, we tested several modifications and configurations of the BioGents® Sentinel (BGS) trap, designed with the aim to increase its efficacy for sampling malaria vector species. Traps were used with chemical attractants and CO2, and the impacts of trap position, trap Colour contrast Combination and the addition of a heat source were tested in two studies conducted in the Sudano-Sahelian region of Burkina Faso and Mali. The results show that of all the configurations tested, the addition of a heat source to the BGS trap with the original Colour Combination and an upward positioning resulted in a 1.8- and 5.9-fold increase in host-seeking Anopheles gambiae (s.l.) females in the experiments performed in Burkina Faso and Mali, respectively. BGS with heat traps, referred to as BGSH traps, captured An. gambiae (s.l.), An. pharoensis, An. coustani, Culex and Mansonia spp. Importantly, the results suggest that their efficacy does not depend on the close proximity of nearby hosts in houses. The results suggest that BGSH traps can be an effective scalable tool for sampling outdoor anopheline vector populations. Further developments enabling CO2 and heat generation for longer periods of time would further improve the trap’s versatility for large-scale surveillance programmes.

  • Improved BioGents® Sentinel trap with heat (BGSH) for outdoor collections of Anopheline species in Burkina Faso and Mali, West Africa
    'Springer Science and Business Media LLC', 2021
    Co-Authors: Guindo A, Ps Epopa, Doumbia S, Millogo A-a, Diallo B, Fa Yao, Yagoure B, Tripet F, Diabate A, Mb Coulibaly
    Abstract:

    BACKGROUND: Since the late 1990s, malaria control programmes have relied extensively on mass bednet distribution and indoor residual spraying. Both interventions use pesticides and target mosquitoes coming indoors either to feed or to rest. Unfortunately, these intensified vector control campaigns have resulted in mosquito populations with high levels of resistance to most of the chemical compounds used against them and which are increasingly exophagic and exophillic, hence difficult to monitor indoors. Consequently, there is an urgent need for novel tools to sample outdoor anopheline populations for monitoring interventions and disease surveillance programmes. METHODOLOGIES: In this study, we tested several modifications and configurations of the BioGents® Sentinel (BGS) trap, designed with the aim to increase its efficacy for sampling malaria vector species. Traps were used with chemical attractants and CO2, and the impacts of trap position, trap Colour contrast Combination and the addition of a heat source were tested in two studies conducted in the Sudano-Sahelian region of Burkina Faso and Mali. RESULTS: The results show that of all the configurations tested, the addition of a heat source to the BGS trap with the original Colour Combination and an upward positioning resulted in a 1.8- and 5.9-fold increase in host-seeking Anopheles gambiae (s.l.) females in the experiments performed in Burkina Faso and Mali, respectively. BGS with heat traps, referred to as BGSH traps, captured An. gambiae (s.l.), An. pharoensis, An. coustani, Culex and Mansonia spp. Importantly, the results suggest that their efficacy does not depend on the close proximity of nearby hosts in houses. CONCLUSIONS: The results suggest that BGSH traps can be an effective scalable tool for sampling outdoor anopheline vector populations. Further developments enabling CO2 and heat generation for longer periods of time would further improve the trap's versatility for large-scale surveillance programmes