69 Works

Data from: Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology

Jean Claude Rakotonirina, Sándor Csősz & Brian L. Fisher
The Camponotus grandidieri species group and Camponotus niveosetosus species group of the Malagasy region are revised. Species delimitation was inferred from the evidence of both qualitative morphological analysis and multivariate morphometry. The multivariate method combined the Nest Centroid (NC)-clustering method and Partitioning Algorithm based on Recursive Thresholding (PART) function to generate hypotheses about species boundaries (clusters) based on 19 continuous morphological traits of minor workers. The proposed species hypotheses were tested by cumulative cross-validated Linear...

Wood specific gravity for trees in Ankeniheny Zahamena forest corridor, Madagascar

T. Ramananantoandro, A. R. Razafimahatratra, R. Razafinarivo, M. Rinaelintsoa & H. Razakamanarivo
Data comprise wood specific gravity (WSG) and density at 12% moisture content (D12) in wood cores sampled from trees in the Ankeniheny Zahamena forest corridor, the remains of the evergreen forest of eastern Madagascar. The data also include date of sample collection, zone identifier, core identifier, local and scientific tree name, tree height and diameter. Samples were analysed by UFR Sciences du bois de l'ESSA-forêts, Université d'Antananarivo. Data were collected as part of a project...

Fire and grazing determined grasslands of central Madagascar represent ancient assemblages

Cedrique Solofondranohatra, Maria Vorontsova, Gareth Hempson, Jan Hackel, Stuart Cable, Vololoniaina Jeannoda & Caroline Lehmann
The ecology of Madagascar’s grasslands is under-investigated and the dearth of ecological understanding of how disturbance by fire and grazing shapes these grasslands stems from a perception that disturbance shaped Malagasy grasslands only after human arrival. However, worldwide, fire and grazing shape tropical grasslands over ecological and evolutionary timescales, and it is curious Madagascar should be a global anomaly. We examined the functional and community ecology of Madagascar’s grasslands across 71 communities in the Central...

Agroecosystem diversification with legumes or non-legumes improves differently soil fertility according to soil type

Marie Sauvadet, Jean Trap, Gaëlle Damour, Claude Plassard, Karel Van Den Meersche, Raphaël Achard, Clémentine Allinne, Patrice Autfray, Isabelle Bertrand, Eric Blanchart, Péninna Deberdt, Séguy Enock, Jean-Daniel Essobo, Grégoire Freschet, Mickaël Hedde, Elias De Melo Virginio Filho, Bodovololona Rabary, Miora Rakotoarivelo, Richard Randriamanantsoa, Béatrice Rhino, Aude Ripoche, Elisabeth Rosalie, Stéphane Saj, Thierry Becquer, Philippe Tixier … & Jean-Michel Harmand
Plant diversification through crop rotation or agroforestry is a promising way to improve sustainability of agroecosystems. Nonetheless, criteria to select the most suitable plant communities for agroecosystems diversification facing contrasting environmental constraints need to be refined. Here, we compared the impacts of 24 different plant communities on soil fertility across six tropical agroecosystems: either on highly weathered Ferralsols, with strong P limitation, or on partially weathered soils derived from volcanic material, with major N limitation....

Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Abstract Background Malaria remains a leading cause of morbidity and mortality worldwide, with progress in malaria control stalling in recent years. Proactive community case management (pro-CCM) has been shown to increase access to diagnosis and treatment and reduce malaria burden. However, lack of experimental evidence may hinder the wider adoption of this intervention. We conducted a cluster randomized community intervention trial to assess the efficacy of pro-CCM at decreasing malaria prevalence in rural endemic areas...

Additional file 3 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 3. Mean ELISA ODs by antigen. Notes: OD=optical density; red dot=mean of original data; blue dot=mean of each 1,000 bootstrap random samples; light red dashed line=upper and lower 95% confidence interval (CI) of original data; dark red dashed line=upper and lower 99% confidence interval (CI) of original data

Additional file 3 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 3. Mean ELISA ODs by antigen. Notes: OD=optical density; red dot=mean of original data; blue dot=mean of each 1,000 bootstrap random samples; light red dashed line=upper and lower 95% confidence interval (CI) of original data; dark red dashed line=upper and lower 99% confidence interval (CI) of original data

Comparative effect of artemether-lumefantrine and artesunate-amodiaquine on gametocyte clearance in children with uncomplicated Plasmodium falciparum malaria in Madagascar

Malalanandrianina A. Rakotoarisoa, Jocia Fenomanana, Bronislaw Tchesterico Dodoson, Voahangy Hanitriniaina I. Andrianaranjaka & Arsène Ratsimbasoa
Abstract Background Gametocytes are the sexual stages ensuring continuity of the development cycle of the parasite, as well as its transmission to humans. The efficacy of artemisinin-based anti-malarials against asexual stages of Plasmodium has been reported in Madagascar, but their effects on gametocytes are not well documented. The present study aims to determine the emergence of gametocyte and gametocyte clearance after artesunate-amodiaquine (ASAQ) or artemether-lumefantrine (AL) treatment in children with uncomplicated Plasmodium falciparum malaria in...

Comparative effect of artemether-lumefantrine and artesunate-amodiaquine on gametocyte clearance in children with uncomplicated Plasmodium falciparum malaria in Madagascar

Malalanandrianina A. Rakotoarisoa, Jocia Fenomanana, Bronislaw Tchesterico Dodoson, Voahangy Hanitriniaina I. Andrianaranjaka & Arsène Ratsimbasoa
Abstract Background Gametocytes are the sexual stages ensuring continuity of the development cycle of the parasite, as well as its transmission to humans. The efficacy of artemisinin-based anti-malarials against asexual stages of Plasmodium has been reported in Madagascar, but their effects on gametocytes are not well documented. The present study aims to determine the emergence of gametocyte and gametocyte clearance after artesunate-amodiaquine (ASAQ) or artemether-lumefantrine (AL) treatment in children with uncomplicated Plasmodium falciparum malaria in...

Additional file 1 of Intensified tuberculosis treatment to reduce the mortality of HIV-infected and uninfected patients with tuberculosis meningitis (INTENSE-TBM): study protocol for a phase III randomized controlled trial

Thomas Maitre, Maryline Bonnet, Alexandra Calmy, Mihaja Raberahona, Rivonirina Andry Rakotoarivelo, Niaina Rakotosamimanana, Juan Ambrosioni, José M. Miró, Pierre Debeaudrap, Conrad Muzoora, Angharad Davis, Graeme Meintjes, Sean Wasserman, Robert Wilkinson, Serge Eholié, Frédéric Ello Nogbou, Maria-Camilla Calvo-Cortes, Corine Chazallon, Vanessa Machault, Xavier Anglaret & Fabrice Bonnet
Additional file 1. Modified MARAIS Score (modified from Marais et al. [27]).

Forest inventory, dendrometric tree characteristics and aboveground biomass data in Ankeniheny Zahamena forest corridor, Madagascar

H.D. Razakamanarivo, T. Razafimbelo, A. Andriamananjara, A. Rianahary, M. Razafindrakoto & A. Harinirina
Data comprise a forest inventory (tree name (local, scientific, genera, family), diameter, height), dendrometric tree characteristics (tree species, weight (branches, leaves, trunk), diameter, height, coordinates, distance, location) and aboveground biomass data (litter and root mat depth, biomass and carbon stock of living vegetation (sapling, tree and understorey), non-living vegetation (litter), lying dead wood and standing dead wood) sampled in the Ankeniheny Zahamena Forest Corridor (remains of the evergreen forest of eastern Madagascar). Living vegetation includes...

Soil profile and chemistry data in the Ankeniheny Zahamena forest corridor, Madagascar

H. Razakamanarivo, T. Razafimbelo, A. Andriamananjara, A. Rianahary, M. Razafindrakoto & A. Harinirina
Data comprise soil profile (soil texture and pit description during fieldwork) and soil chemistry (bulk density, carbon content, carbon stock and organic carbon content obtained with thirteen carbon isotope analysis) from samples taken in the Ankeniheny Zahamena forest corridor, Madagascar. Data were collected as part of a project funded by the Ecosystem Services for Poverty Alleviation (ESPA) programme under work package 4 P4GES project, grant references: NE/K008692/1, NE/K010115/1, and NE/K010220-1.

French Global Network of Geomagnetic observatories

The Bureau Central de Magnétisme Terrestre (BCMT) is a French organization founded in 1921 and attached to the Institut de Physique du Globe de Paris (IPGP). Two French institutions are involved in BCMT operations: IPGP and École et Observatoire des Sciences de la Terre de Strasbourg (EOST). The primary mission of the BCMT is to provide ground geomagnetic observations of the highest quality to the scientific community, in France and abroad. To achieve its mission,...

French Global Network of Geomagnetic observatories

The Bureau Central de Magnétisme Terrestre (BCMT) is a French organization founded in 1921 and attached to the Institut de Physique du Globe de Paris (IPGP). Two French institutions are involved in BCMT operations: IPGP and École et Observatoire des Sciences de la Terre de Strasbourg (EOST). The primary mission of the BCMT is to provide ground geomagnetic observations of the highest quality to the scientific community, in France and abroad. To achieve its mission,...

Additional file 1 of Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Additional file 1: Figure S1. Flowchart of the households and individuals included on the survey from the baseline. Figure S2. Comparison of malaria incidence and positivity in the intervention area during March-October 2017 with average values for Mananjary District. Figure S3. Comparison of malaria community case management in the intervention and control arms during pro-CCM implementation and during the two years prior. Figure S4. Map of Mananjary district and the fokontany included in the intervention...

Additional file 2 of Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Additional file 2. Table S1. Distribution of positive RDT results in the 22 fokontany. Table S2. Impact of Pro-CCM and IRS on malaria prevalence, per-protocol analyses. Table S3. Comparison of observed proportion of parasite prevalence by RDT by age group between intervention and control arms. Table S4. Comparison of reported bed net use (LLIN) by age group between baseline and endline surveys.

Additional file 3 of Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Additional file 3. Analyses and findings on anemia and PRO-CCM. Table S5. Prevalence of anemia among all women of reproductive age at baseline and endline, by study arm. Table S6. Unadjusted analyses of prevalence of anemia among all women of reproductive age at baseline, using logistic regression models. Table S7. Adjusted analyses of prevalence of anemia among all women of reproductive age at baseline, using logistic regression models.

Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Abstract Background Malaria remains a leading cause of morbidity and mortality worldwide, with progress in malaria control stalling in recent years. Proactive community case management (pro-CCM) has been shown to increase access to diagnosis and treatment and reduce malaria burden. However, lack of experimental evidence may hinder the wider adoption of this intervention. We conducted a cluster randomized community intervention trial to assess the efficacy of pro-CCM at decreasing malaria prevalence in rural endemic areas...

Additional file 2 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 2. Distribution of ELISA OD values by antigen.

Additional file 1 of Comparative effect of artemether-lumefantrine and artesunate-amodiaquine on gametocyte clearance in children with uncomplicated Plasmodium falciparum malaria in Madagascar

Malalanandrianina A. Rakotoarisoa, Jocia Fenomanana, Bronislaw Tchesterico Dodoson, Voahangy Hanitriniaina I. Andrianaranjaka & Arsène Ratsimbasoa
Additional file 1: ASAQ dosage.

Widespread reticulate evolution in an adaptive radiation

Dylan DeBaun, Nirhy Rabibisoa, Achille Raselimanana, Christopher John Raxworthy & Frank T. Burbrink
A fundamental assumption of evolutionary biology is that phylogeny follows a bifurcating process. However, hybrid speciation and introgression are becoming more widely documented in many groups. Hybrid inference studies have been historically limited to small sets of taxa, while exploration of the prevalence and trends of reticulation at deep time scales remains unexplored. We study the evolutionary history of an adaptive radiation of 109 gemsnakes in Madagascar (Pseudoxyrhophiinae) to identify potential instances of introgression. Using...

Data from: Comparative and population mitogenomic analyses of Madagascar’s extinct, giant ‘subfossil’ lemurs

Logan Kistler, Aakrosh Ratan, Laurie R. Godfrey, Brooke E. Crowley, Cris E. Hughes, Runhua Lei, Yinqui Cui, Mindy L. Wood, Kathleen M. Muldoon, Haingoson Andriamialison, John J. McGraw, Lynn P. Tomsho, Stephan C. Schuster, Webb Miller, Edward E. Louis, Anne D. Yoder, Ripan S. Malhi, George H. Perry & Yinqiu Cui
Humans first arrived on Madagascar only a few thousand years ago. Subsequent habitat destruction and hunting activities have had significant impacts on the island's biodiversity, including the extinction of megafauna. For example, we know of 17 recently extinct ‘subfossil’ lemur species, all of which were substantially larger (body mass ∼11–160 kg) than any living population of the ∼100 extant lemur species (largest body mass ∼6.8 kg). We used ancient DNA and genomic methods to study...

Data from: Visual ecology of true lemurs suggests a cathemeral origin for the primate cone opsin polymorphism

Kim Valenta, Melissa Edwards, Radoniaina R. Rafaliarison, Steig E. Johnson, Sheila M. Holmes, Kevin A. Brown, Nathaniel J. Dominy, Shawn M. Lehman, Esteban J. Parra & Amanda D. Melin
In contrast to the majority of primates, which exhibit dedicated diurnality or nocturnality, all species of Eulemur are cathemeral. Color vision, in particular, is strongly affected by the spectral composition and intensity of ambient light, and the impact of activity period on the evolution of primate color vision is actively debated. We studied three groups of wild brown lemurs (Eulemur fulvus) in Ankarafantsika National Park, Madagascar over a one-year span. We also used non-invasive fecal...

Additional file 3 of Proactive community case management decreased malaria prevalence in rural Madagascar: results from a cluster randomized trial

Rila Ratovoson, Andres Garchitorena, Daouda Kassie, Jemima A. Ravelonarivo, Voahangy Andrianaranjaka, Seheno Razanatsiorimalala, Avotra Razafimandimby, Fanjasoa Rakotomanana, Laurie Ohlstein, Reziky Mangahasimbola, Sandro A. N. Randrianirisoa, Jocelyn Razafindrakoto, Catherine M. Dentinger, John Williamson, Laurent Kapesa, Patrice Piola, Milijaona Randrianarivelojosia, Julie Thwing, Laura C. Steinhardt & Laurence Baril
Additional file 3. Analyses and findings on anemia and PRO-CCM. Table S5. Prevalence of anemia among all women of reproductive age at baseline and endline, by study arm. Table S6. Unadjusted analyses of prevalence of anemia among all women of reproductive age at baseline, using logistic regression models. Table S7. Adjusted analyses of prevalence of anemia among all women of reproductive age at baseline, using logistic regression models.

Additional file 2 of Comparative effect of artemether-lumefantrine and artesunate-amodiaquine on gametocyte clearance in children with uncomplicated Plasmodium falciparum malaria in Madagascar

Malalanandrianina A. Rakotoarisoa, Jocia Fenomanana, Bronislaw Tchesterico Dodoson, Voahangy Hanitriniaina I. Andrianaranjaka & Arsène Ratsimbasoa
Additional file 2: AL dosage.

Registration Year

  • 2023
    1
  • 2022
    34
  • 2021
    4
  • 2020
    9
  • 2019
    3
  • 2018
    2
  • 2017
    10
  • 2016
    2
  • 2015
    1
  • 2014
    1

Resource Types

  • Dataset
    41
  • Text
    20
  • Collection
    8

Affiliations

  • University of Antananarivo
    58
  • Institut Pasteur de Madagascar
    14
  • Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle
    8
  • Kwame Nkrumah University of Science and Technology
    8
  • Kangbuk Samsung Hospital
    8
  • University of Cambridge
    8
  • Federal Ministry of Health
    8
  • World Health Organization
    7
  • University of Basel
    7
  • Instituto de Salud Carlos III
    6