12 Works

Data from: Chromosome inversions and ecological plasticity in the main African malaria mosquitoes

Diego Ayala, Pelayo Acevedo, Marco Pombi, Ibrahima Dia, Daniela Boccolini, Carlo Costantini, Frederic Simard & Didier Fontenille
Chromosome inversions have fascinated the scientific community, mainly because of their role in the rapid adaption of different taxa to changing environments. However, the ecological traits linked to chromosome inversions have been poorly studied. Here, we investigated the roles played by 23 chromosome inversions in the adaptation of the four major African malaria mosquitoes to local environments in Africa. We studied their distribution patterns by using spatially explicit modeling and characterized the ecogeographical determinants of...

Larval site characteristics of mosquito Aedes aegypti in La Lope, Gabon

Siyang Xia, Hany K. M. Dweck, Joel Lutomiah, Rosemary Sang, Carolyn S. McBride, Noah H. Rose, Diego Ayala & Jeffrey R. Powell
This dataset is described and analyzed in the paper: "Xia, S., Dweck, H. K. M., Lutomiah, J., Sang, R., McBride, C. S., Rose, N. H., Ayala, D., & Powell, J. R. (2021). Larval sites of the mosquito Aedes aegypti formosus in forest and domestic habitats in Africa and the potential association with oviposition evolution. Ecology and Evolution, 00, 1– 17. https://doi.org/10.1002/ece3.8332" The mosquito Ae. aegypti is a major vector of several arboviral diseases. In Africa,...

Last-come, best served? Mosquito biting order and Plasmodium transmission

Romain Pigeault, Julie Isaïa, Ana Rivero, Olivier Glaizot & Philippe Christe
A pervasive characteristic of parasite infections is their tendency to be overdispersed. Understanding the mechanisms underlying this overdispersed distribution is of key importance as it may impact the transmission dynamics of the pathogen. Although multiple factors ranging from environmental stochasticity to inter-individual heterogeneity may explain parasite overdispersion, parasite infection is also observed to be overdispersed in inbred host population maintained under laboratory conditions, suggesting that other mechanisms at play. Here, we show that the aggregated...

Endosymbionts' genomes extracted from tick metagenomes

Marie Buysse & Olivier Duron
We have reconstructed the genomes of bacterial endosymbionts (Coxiella-LE, Francisella-LE and Coxiella burnetii) from the tick metagenomes of the BioProject PRJCA002242 available on the BIGD database (https://bigd.big.ac.cn/). Jia et al. (Jia et al., 2020, https://doi.org/10.1016/j.cell.2020.07.023; the original paper of the BioProject PRJCA002242) reported major discoveries on the genetic basis of hematophagy and vector capacities in ticks. Our re-examination of the tick metagenomic datasets shows that nutritional endosymbionts required for hematophagy were also widely present. They...

Oocyst counts from naturally infected mosquitoes collected in Burkina Faso

Anais Bompard, Dari F. Da, R. Serge Yerbanga, Isabelle Morlais, Parfait H. Awono-Ambéné, Roch K. Dabiré, Jean Bosco Ouédraogo, Thierry Lefèvre, Thomas S. Churcher & Anna Cohuet
The population dynamics of human to mosquito malaria transmission in the field has important implica- tions for the genetics, epidemiology and control of malaria. The number of oocysts in oocyst-positive mosquitoes developing from a single, naturally acquired infectious blood meal (herein referred to as a single-feed infection load) greatly influences the efficacy of transmission blocking interventions but still remains poorly documented. During a year-long analysis of malaria parasite transmission in Burkina Faso we caught and...

Data from: Host nutrition alters the variance in parasite transmission potential

Pedro F. Vale, Marc Choisy & Tom J. Little
The environmental conditions experienced by hosts are known to affect their mean parasite transmission potential. How different conditions may affect the variance of transmission potential has received less attention but is an important question for disease management, especially if specific ecological contexts are more likely to foster a few extremely infectious hosts. Using the obligate-killing bacterium Pasteuria ramosa and its crustacean host Daphnia magna, we analysed how host nutrition affected the variance of individual parasite...

Data from: Evidence for carry-over effects of predator exposure on pathogen transmission potential

Olivier Roux, Amelie Vantaux, Benjamin Roche, Koudraogo B. Yameogo, Kounbobr R. Dabiré, Abdoulaye Diabaté, Frederic Simard & Thierry Lefevre
Accumulating evidence indicates that species interactions such as competition and predation can indirectly alter interactions with other community members, including parasites. For example, presence of predators can induce behavioral defenses in the prey, resulting in a change in susceptibility to parasites. Such predator-induced phenotypic changes may be especially pervasive in prey with discrete larval and adult stages for which exposure to predators during larval development can have strong carry-over effects on adult phenotypes. To our...

Data from: Evidence that hepatitis C virus genome partly controls infection outcome

Matthew Hartfield, Rowena Bull, Peter A. White, Andrew Lloyd, Fabio Luciani & Samuel Alizon
Infection by hepatitis C virus (HCV) leads to one of two outcomes; either the infection resolves within approximately 6 months or the virus can persist indefinitely. Host genetics are known to affect the likelihood of clearance or persistence. By contrast, the importance of the virus genotype in determining infection outcome is unknown, as quantifying this effect traditionally requires well-characterized transmission networks, which are rare. Extending phylogenetic approaches previously developed to estimate the virus control over...

Data from: Plasmodium infection brings forward mosquito oviposition

Julien Vézilier, Antoine Nicot, Sylvain Gandon, Ana Rivero & J. Vezilier
Invertebrate hosts often bring forward their reproductive effort in response to a parasitic infection. This is widely interpreted as a host-driven response aimed at compensating for the expected losses in future fitness as a result of parasitism. Here we report that mosquitoes bring forward their oviposition schedule when they are infected with Plasmodium, a parasite known to severely curtail mosquito fecundity. This response could aim at compensating for a negative time-dependent effect of the parasite...

Data from: Larval nutritional stress affects vector life history traits and human malaria transmission

Amélie Vantaux, Thierry Lefèvre, Anna Cohuet, Kounbobr R. Dabiré, Benjamin Roche & Olivier Roux
Exposure to stress during an insect’s larval development can have carry-over effects on many adult life history traits and affect host susceptibility to pathogens. Studies on mosquitoes have shown that the larval environment impacts on components of vectorial capacity such as vector competence and adult survival. We investigated the carry-over effects of larval nutritional stress for the first time on a natural mosquito vector-malaria parasite association: Anopheles coluzzii exposed to field isolates of Plasmodium falciparum....

Larval site characteristics of mosquito Aedes aegypti in Rabai, Kenya

Siyang Xia, Hany K. M. Dweck, Joel Lutomiah, Rosemary Sang, Carolyn S. McBride, Noah H. Rose, Diego Ayala & Jeffrey R. Powell
This dataset is described and analyzed in the paper: "Xia, S., Dweck, H. K. M., Lutomiah, J., Sang, R., McBride, C. S., Rose, N. H., Ayala, D., & Powell, J. R. (2021). Larval sites of the mosquito Aedes aegypti formosus in forest and domestic habitats in Africa and the potential association with oviposition evolution. Ecology and Evolution, 00, 1– 17. https://doi.org/10.1002/ece3.8332" The mosquito Ae. aegypti is a major vector of several arboviral diseases. In Africa,...

Data from: Habitat fragmentation differentially shapes neutral and immune gene variation in a tropical bird species

Antoine Perrin, Aurélie Khimoun, Bruno Faivre, Anthony Ollivier, Nyls De Pracontal, Franck Théron, Maxime Loubon, Gilles Leblond, Olivier Duron & Stéphane Garnier
Habitat fragmentation is a major cause of biodiversity loss, responsible for an alteration of intraspecific patterns of neutral genetic diversity and structure. Although neutral genetic variation can be informative for demographic inferences, it may be a poor predictor of adaptive genetic diversity and thus of the consequences of habitat fragmentation on selective evolutionary processes. In this context, we contrasted patterns of genetic diversity and structure of neutral loci (microsatellites) and immune genes (i.e., toll-like receptors)...

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Affiliations

  • Maladies Infectieuses et Vecteurs : Ecologie, Génétique, Evolution et Contrôle
    11
  • French National Centre for Scientific Research
    3
  • Princeton University
    2
  • Yale University
    2
  • Kenya Medical Research Institute
    2
  • Institut de Recherche en Sciences de la Santé
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  • Yale New Haven Hospital
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  • Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle
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  • Institute for Game and Wildlife Research
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  • University of Lausanne
    1