DE MEEÛS Thierry's profile
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DE MEEÛS ThierryORCID_LOGO

  • SAS, IRD, Intertryp, IRD, Cirad, Univ Montpellier, Montpellier, France
  • Animal diseases, Behaviour of hosts, infectious agents, or vectors, Coevolution, Disease Ecology/Evolution, Ecology of hosts, infectious agents, or vectors, Eukaryotic pathogens/symbionts, Evolution of hosts, infectious agents, or vectors, Interactions between hosts and infectious agents/vectors, Parasites, Population genetics of hosts, infectious agents, or vectors, Reservoirs, Taxonomy of hosts, infectious agents, or vectors, Vectors, Zoonoses
  • administrator, manager, recommender

Recommendation:  1

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Areas of expertise
Degrees 21/01/1999: Post-PhD (Habilitation à Diriger des Recherches) at Montpellier II University. 27/06/1991: PhD of Physiology and Population and Organismal Biology at Montpellier II University. September 1989: Pre PhD of Sciences of Evolution and Ecology at Montpellier II University. September 1988: Pre-PhD of Parasitology: Ecology, Pathology at Montpellier II University. October 1987: Probation in experimental parasitology at Montpellier II University. June 1985: Masters in Population and organismal biology at P. and M. Curie University (Paris 6). Appointed positions 01/08/2015-Present: Full time senior researcher (DR1, Equivalent to full professor grade) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD, , TA A-17/G, Campus International de Baillarguet, 34398 Montpellier Cedex 5, France. 01/09/2012-31/07/2015: Full time senior researcher (DR1) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD and posted at the Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), 01 BP 454, Bobo-Dioulasso 01, Burkina-Faso. 05/01/2012-01/09/2012: Full time senior researcher (DR2) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD, France. 02/03/2009-04/01/2012: Full time senior researcher (DR2) in the CNRS given available to the IRD and posted at UMR 177 IRD/CIRAD, CIRDES, 01 BP 454 Bobo-Dioulasso 01, Burkina-Faso. 01/10/2005-01/03/2009: Full time senior researcher in the CNRS in the Laboratory 'Génétique et Evolution des Maladies Infectieuses', UMR 2724 CNRS/IRD Montpellier. 01/01/2004-30/09/2005: Full time and permanent researcher in the CNRS in the Laboratory 'Génétique et Evolution des Maladies Infectieuses', UMR 2724 CNRS/IRD Montpellier. 01/11/1998-31/12/2003: Full time and permanent researcher in the CNRS in the 'Centre d'Etude sur le Polymorphisme des Microorganismes', UMR 9926 CNRS/IRD Montpellier. 01/10/1993-31/10/1998: Full time and permanent researcher in the CNRS in the Laboratory 'Biologie des Populations d'Helminthes Parasites', UMR 5555 CNRS/Université Montpellier II 01/10/1992-31/09/1993: Temporary lecturer of population genetics in Montpellier II University. 01/10/1991-31/03/1992: Six month grant from the British Council at the School of Biological Sciences, University of Wales, Bangor, Gwynedd, LL57 2UW, UK. 01/10/1985-30/09/1986: Military service at Spire (Germany). Research experience During my PhD, I have studied the mechanisms of maintenance of adaptive polymorphism and evolution of habitat preference. I have used field studies, experimental tests and theoretical (analytical and computer simulations) modelling. The biological model consisted in two species of ecto-parasitic copepods and their three hosts (in the Mediterranean), turbot, brill and flounder. The fact that these organisms are marine, naturally involved me into marine biology topics. I also had to develop skills in programming (in Pascal) and in isoenzymatic genotyping. During my Post-doc in Bangor, I was trained to theoretical population genetics of structured population, in particular as regard to parameter estimation and testing of Wright's F-statistics. When coming back to Montpellier I kept studying adaptive polymorphism and habitat preference but more and more got involved in population genetic structure of hosts and their parasites. I got involved in studies on host-manipulating parasites as well. I have studied different kind of organisms as parasitic copepods, cestodes, trematodes, fungi, bacteriae, trypanosomes, leishmania, ticks, tsetse flies, gammarid amphipods, marine and fresh water snails, mussels, rats and deer. Presently my main areas of investigation concern host and parasite co-structures and the use of molecular markers in ecological inferences, and in particular in epidemiological inferences; and the theoretical and applied population genetics of clonal organisms. The main programs I am currently supervising or undertaking are: Population genetics of trypansosomes and their vectors in Western Africa; Population genetics of clonal and partially clonal organisms: theory and application to medically or veterinary relevant microbes (trypanosomes, leishmania, yeasts). Adaptive polymorphism and habitat preference evolution, the use of population genetics tools for population biology inferences in host parasite systems and the population genetics of clones are thus the main fields in which I am specially qualified.

Recommendation:  1

24 Jan 2024
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Physiological and behavioural resistance of malaria vectors in rural West-Africa : a data mining study to address their fine-scale spatiotemporal heterogeneity, drivers, and predictability

Large and complete datasets, and modelling reveal the major determinants of physiological and behavioral insecticide resistance of malaria vectors

Recommended by based on reviews by Haoues Alout and 1 anonymous reviewer

            Parasites represent the most diverse and adaptable ecological group of the biosphere (Timm & Clauson, 1988; De Meeûs et al., 1998; Poulin & Morand, 2000; De Meeûs & Renaud, 2002). The human species is known to considerably alter biodiversity, though it hosts, and thus sustains the maintenance of a spectacular diversity of parasites (179 species for eukaryotic species only) (De Meeûs et al., 2009). Among these, the five species of malaria agents (genus Plasmodium) remain a major public health issue around the world. Plasmodium falciparum is the most prevalent and lethal of these (Liu et al., 2010). With a pick of up to 2 million deaths due to malaria in 2004, deaths decreased to around 1 million in 2010 (Murray et al., 2012), to reach 619,000 in 2021, most of which in sub-Saharan Africa, and 79% of which were among children aged under 5 years (World Health Organization, 2022). 

            As stressed by Taconet et al. (2023), reduction in malaria deaths is attributable to control measures, in particular against its vectors (mosquitoes of the genus Anopheles). Nevertheless, the success of vector control is hampered by several factors (biological, environmental and socio-economic), and in particular by the great propensity of targeted mosquitoes to evolve physiological or behavioral avoidance of anti-vectorial measures.

            In their paper Taconet et al. (2023) aims at understanding what are the main factors that determine the evolution of insecticide resistance in several malaria vectors, in relation to the biological determinisms of behavioral resistance and how fast such evolutions take place. To tackle these objectives, authors collected an impressive amount of data in two rural areas of West Africa. With appropriate modeling, Taconet et al. discovered, among many other results, a predominant role of public health measures, as compared to agricultural practices, in the evolution of physiological resistance. They also found that mosquito foraging activities are mostly explained by host availability and climate, with a poor, if any, association with genetic markers of physiological resistance to insecticides. These findings represent an important contribution to the field and should help at designing more efficient control strategies against malaria.

 

References

De Meeûs T, Michalakis Y, Renaud F (1998) Santa Rosalia revisited: or why are there so many kinds of parasites in “the garden of earthly delights”? Parasitology Today, 14, 10–13. https://doi.org/10.1016/S0169-4758(97)01163-0

De Meeûs T, Prugnolle F, Agnew P (2009) Asexual reproduction in infectious diseases. In: Lost Sex: The Evolutionary Biology of Parthenogenesis (eds Schön I, Martens K, van Dijk P), pp. 517-533. Springer, NY. https://doi.org/10.1007/978-90-481-2770-2_24

De Meeûs T, Renaud F (2002) Parasites within the new phylogeny of eukaryotes. Trends in Parasitology, 18, 247–251. https://doi.org/10.1016/S1471-4922(02)02269-9

Liu W, Li Y, Learn GH, Rudicell RS, Robertson JD, Keele BF, Ndjango JB, Sanz CM, Morgan DB, Locatelli S, Gonder MK, Kranzusch PJ, Walsh PD, Delaporte E, Mpoudi-Ngole E, Georgiev AV, Muller MN, Shaw GM, Peeters M, Sharp PM, Rayner JC, Hahn BH (2010) Origin of the human malaria parasite Plasmodium falciparum in gorillas. Nature, 467, 420–425. https://doi.org/10.1038/nature09442

Murray CJ, Rosenfeld LC, Lim SS, Andrews KG, Foreman KJ, Haring D, Fullman N, Naghavi M, Lozano R, Lopez AD (2012) Global malaria mortality between 1980 and 2010: a systematic analysis. The Lancet, 379, 413–431. https://doi.org/10.1016/S0140-6736(12)60034-8

Poulin R, Morand S (2000) The diversity of parasites. Quarterly Review of Biology, 75, 277–293. https://doi.org/10.1086/393500

Taconet P, Soma DD, Zogo B, Mouline K, Simard F, Koffi AA, Dabire RK, Pennetier C, Moiroux N (2023) Physiological and behavioural resistance of malaria vectors in rural West-Africa : a data mining study to address their fine-scale spatiotemporal heterogeneity, drivers, and predictability. bioRxiv, ver. 4 peer-reviewed and recommended by Peer Community in Infections. https://doi.org/10.1101/2022.08.20.504631

Timm RM, Clauson BL (1988) Coevolution: Mammalia. In: 1988 McGraw-Hill yearbook of science & technology, pp. 212–214. McGraw-Hill Book Company, New York.

World Health Organization (2022) World malaria report 2022. Geneva: World Health Organization; 2022. Licence: CC BY-NC-SA 3.0 IGO. https://iris.who.int/bitstream/handle/10665/365169/9789240064898-eng.pdf?sequence=1.

 

avatar

DE MEEÛS ThierryORCID_LOGO

  • SAS, IRD, Intertryp, IRD, Cirad, Univ Montpellier, Montpellier, France
  • Animal diseases, Behaviour of hosts, infectious agents, or vectors, Coevolution, Disease Ecology/Evolution, Ecology of hosts, infectious agents, or vectors, Eukaryotic pathogens/symbionts, Evolution of hosts, infectious agents, or vectors, Interactions between hosts and infectious agents/vectors, Parasites, Population genetics of hosts, infectious agents, or vectors, Reservoirs, Taxonomy of hosts, infectious agents, or vectors, Vectors, Zoonoses
  • administrator, manager, recommender

Recommendation:  1

Reviews:  0

Areas of expertise
Degrees 21/01/1999: Post-PhD (Habilitation à Diriger des Recherches) at Montpellier II University. 27/06/1991: PhD of Physiology and Population and Organismal Biology at Montpellier II University. September 1989: Pre PhD of Sciences of Evolution and Ecology at Montpellier II University. September 1988: Pre-PhD of Parasitology: Ecology, Pathology at Montpellier II University. October 1987: Probation in experimental parasitology at Montpellier II University. June 1985: Masters in Population and organismal biology at P. and M. Curie University (Paris 6). Appointed positions 01/08/2015-Present: Full time senior researcher (DR1, Equivalent to full professor grade) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD, , TA A-17/G, Campus International de Baillarguet, 34398 Montpellier Cedex 5, France. 01/09/2012-31/07/2015: Full time senior researcher (DR1) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD and posted at the Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), 01 BP 454, Bobo-Dioulasso 01, Burkina-Faso. 05/01/2012-01/09/2012: Full time senior researcher (DR2) in the IRD in the team Interactions hôtes - vecteurs - parasites dans les infections par des trypanosomatidae - (INTERTRYP), UMR177 IRD/CIRAD, France. 02/03/2009-04/01/2012: Full time senior researcher (DR2) in the CNRS given available to the IRD and posted at UMR 177 IRD/CIRAD, CIRDES, 01 BP 454 Bobo-Dioulasso 01, Burkina-Faso. 01/10/2005-01/03/2009: Full time senior researcher in the CNRS in the Laboratory 'Génétique et Evolution des Maladies Infectieuses', UMR 2724 CNRS/IRD Montpellier. 01/01/2004-30/09/2005: Full time and permanent researcher in the CNRS in the Laboratory 'Génétique et Evolution des Maladies Infectieuses', UMR 2724 CNRS/IRD Montpellier. 01/11/1998-31/12/2003: Full time and permanent researcher in the CNRS in the 'Centre d'Etude sur le Polymorphisme des Microorganismes', UMR 9926 CNRS/IRD Montpellier. 01/10/1993-31/10/1998: Full time and permanent researcher in the CNRS in the Laboratory 'Biologie des Populations d'Helminthes Parasites', UMR 5555 CNRS/Université Montpellier II 01/10/1992-31/09/1993: Temporary lecturer of population genetics in Montpellier II University. 01/10/1991-31/03/1992: Six month grant from the British Council at the School of Biological Sciences, University of Wales, Bangor, Gwynedd, LL57 2UW, UK. 01/10/1985-30/09/1986: Military service at Spire (Germany). Research experience During my PhD, I have studied the mechanisms of maintenance of adaptive polymorphism and evolution of habitat preference. I have used field studies, experimental tests and theoretical (analytical and computer simulations) modelling. The biological model consisted in two species of ecto-parasitic copepods and their three hosts (in the Mediterranean), turbot, brill and flounder. The fact that these organisms are marine, naturally involved me into marine biology topics. I also had to develop skills in programming (in Pascal) and in isoenzymatic genotyping. During my Post-doc in Bangor, I was trained to theoretical population genetics of structured population, in particular as regard to parameter estimation and testing of Wright's F-statistics. When coming back to Montpellier I kept studying adaptive polymorphism and habitat preference but more and more got involved in population genetic structure of hosts and their parasites. I got involved in studies on host-manipulating parasites as well. I have studied different kind of organisms as parasitic copepods, cestodes, trematodes, fungi, bacteriae, trypanosomes, leishmania, ticks, tsetse flies, gammarid amphipods, marine and fresh water snails, mussels, rats and deer. Presently my main areas of investigation concern host and parasite co-structures and the use of molecular markers in ecological inferences, and in particular in epidemiological inferences; and the theoretical and applied population genetics of clonal organisms. The main programs I am currently supervising or undertaking are: Population genetics of trypansosomes and their vectors in Western Africa; Population genetics of clonal and partially clonal organisms: theory and application to medically or veterinary relevant microbes (trypanosomes, leishmania, yeasts). Adaptive polymorphism and habitat preference evolution, the use of population genetics tools for population biology inferences in host parasite systems and the population genetics of clones are thus the main fields in which I am specially qualified.