1
|
Detilleux L, Bayendi Loudit S, Le Gall P, Francis F, Caparros Megido R, Dogot T. Consumers of insect-based foods: a cross-cultural study between Belgium and Gabon. J Insect Sci 2024; 24:2. [PMID: 38703098 PMCID: PMC11069192 DOI: 10.1093/jisesa/ieae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/25/2024] [Accepted: 04/16/2024] [Indexed: 05/06/2024]
Abstract
Human consumption of insects has previously been examined in cross-cultural studies. However, such studies rarely include African countries and willingness-to-pay for insect-based food has never been assessed in cross-cultural studies. The current study presents a cross-cultural study conducted with 409 urban dwellers from Belgium (191 males; 218 females) and 412 urban dwellers from Gabon (219 males; 193 females). Each respondent was surveyed with a questionnaire following the Knowledge, Attitude, and Practices model and included questions relative to willingness-to-pay for 2 insect-based foods (insect baguette and insect burger). More than 90% of respondents from both countries were familiar with edible insects. However, acceptance of entomophagy was lower in respondents from Gabon than in respondents from Belgium. Intercultural differences were also recorded between Gabonese ethnic groups. Most respondents who accepted entomophagy were willing to eat the insect baguette and/or the insect burger. These findings confirm that entomophagy could further develop in Belgium and Gabon. Willingness-to-pay varied between countries and between insect-based foods. In Belgium, the average prices of comparable conventional foods (i.e., same foods but without insects) were lower than the average willingness-to-pay for insect-based foods. In Gabon, respondents were not willing to pay extra for insect-based foods. Setting the right price for insect-based foods is a necessary step to promote more frequent insect consumption.
Collapse
Affiliation(s)
- Loïc Detilleux
- Economics and Rural Development, Gembloux Agro-Bio Tech—University of Liège, 5030 Gembloux, Belgium
| | - Sandrine Bayendi Loudit
- Agricultural and Forestry Research Institute (IRAF), National Center for Scientific and Technological Research (CENAREST), Libreville, Gabon
| | - Philippe Le Gall
- UMR EGCE (Evolution, Genomes, Comportement, Ecologie), CNRS IRD—Paris-Sud University, 91190 Gif-sur-Yvette, France
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech—University of Liège, 5030 Gembloux, Belgium
| | - Rudy Caparros Megido
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech—University of Liège, 5030 Gembloux, Belgium
| | - Thomas Dogot
- Economics and Rural Development, Gembloux Agro-Bio Tech—University of Liège, 5030 Gembloux, Belgium
| |
Collapse
|
2
|
Velut G, Grau M, Valois A, Holterbach L, François M, Le Gall P, Aigle L, Pommier de Santi V, Bologna MA. Blister Beetle Dermatitis Outbreaks in Mali. Mil Med 2023; 188:3066-3070. [PMID: 35446414 DOI: 10.1093/milmed/usac101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/22/2022] [Accepted: 04/17/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Meloidae are distributed in temperate and arid regions but are also common in subtropical and tropical savannahs. These insects contain cantharidin, a vesicant substance that can cause poisoning by ingestion and dermatitis by direct contact. MATERIAL AND METHODS We describe recurrent Meloidae-related dermatitis outbreaks and their health impact by analyzing medical consultation records and meteorological data. RESULTS Between 2015 and 2019, dermatitis outbreaks took place at a French military base at the end of the rainy season, from July to August, with 100 cases reported in 2015, 74 in 2017, 100 in 2018, and 36 in 2019. In 2017, the incidence rate was 4.4% for the base's population. Initial medical consultations represented 31.5% of total medical care activity. Meloidae were identified as Cyaneolytta fryi. CONCLUSIONS These outbreaks of burn-like lesions, although clinically benign, can place a considerable burden on the medical activity of health care facilities. The diagnosis of Meloidae dermatitis is exclusively anamnestic and clinical and requires reported contact with the insect. The treatment protocol is that of standard burn care, and the best preventive measure is to avoid bright white lights. Military personnel, foreign workers, and travelers venturing into the Sahel should be warned of the risks associated with these beetles.
Collapse
Affiliation(s)
- Guillaume Velut
- French Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille 13568, France
| | - Martin Grau
- French Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille 13568, France
| | - Aude Valois
- Sainte Anne Military Teaching Hospital, Toulon 83000, France
| | - Lise Holterbach
- French Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille 13568, France
| | | | - Philippe Le Gall
- UMR EGCE (Evolution, Genomes, Comportement, Ecologie), CNRS IRD-Paris-Sud University, Gif-sur-Yvette 91198, France
| | - Luc Aigle
- French Military Health Service Academy, École du Val de Grâce, Paris 75230, France
| | - Vincent Pommier de Santi
- French Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille 13568, France
- IRD, AP-HM, SSA, VITROME, Aix-Marseille University, Marseille 13005, France
- University Hospital Institute "Méditerranée Infection", Marseille 13005, France
| | - Marco A Bologna
- Department of Sciences, Roma Tre University, Roma 00146, Italy
| |
Collapse
|
3
|
Fortuna TM, Le Gall P, Mezdour S, Calatayud PA. Impact of invasive insects on native insect communities. Curr Opin Insect Sci 2022; 51:100904. [PMID: 35304314 DOI: 10.1016/j.cois.2022.100904] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Several biophysical factors are leading to the loss of biodiversity, among them the dominance of exotic invasive species on native communities is important. Their dominance can lead to changes in the structure of insect communities, by competing and displacing native species to other crops or habitats. These changes can impact the herbivore's natural enemies in invaded areas by diverging them from suitable herbivores and altering their biological control process. The development of edible insects and derived products at an industrial scale can also have an impact on the local fauna by the risks of spillover and accidental release in nature. Several area-wide integrated pest management programs are also using the sterile insect technique to control insect pests and disease' vectors. This technique is becoming largely used; however, its application as 'non-intrusive to the environment' is controversial particularly when eradication is concerning species that are at the basis of food webs.
Collapse
Affiliation(s)
- Taiadjana M Fortuna
- Laboratoire Evolution, Génome, Comportement et Ecologie, UMR UPSaclay, CNRS 9191, IRD 247 Site IDEEV, 91190 Gif-sur-Yvette, France.
| | - Philippe Le Gall
- Laboratoire Evolution, Génome, Comportement et Ecologie, UMR UPSaclay, CNRS 9191, IRD 247 Site IDEEV, 91190 Gif-sur-Yvette, France
| | | | - Paul-André Calatayud
- Laboratoire Evolution, Génome, Comportement et Ecologie, UMR UPSaclay, CNRS 9191, IRD 247 Site IDEEV, 91190 Gif-sur-Yvette, France; International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya
| |
Collapse
|
4
|
Delabye S, Rougerie R, Bayendi S, Andeime-Eyene M, Zakharov EV, deWaard JR, Hebert PD, Kamgang R, Le Gall P, Lopez-Vaamonde C, Mavoungou JF, Moussavou G, Moulin N, Oslisly R, Rahola N, Sebag D, Decaëns T. Characterization and comparison of poorly known moth communities through DNA barcoding in two Afrotropical environments in Gabon. Genome 2019; 62:96-107. [DOI: 10.1139/gen-2018-0063] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Biodiversity research in tropical ecosystems—popularized as the most biodiverse habitats on Earth—often neglects invertebrates, yet invertebrates represent the bulk of local species richness. Insect communities in particular remain strongly impeded by both Linnaean and Wallacean shortfalls, and identifying species often remains a formidable challenge inhibiting the use of these organisms as indicators for ecological and conservation studies. Here we use DNA barcoding as an alternative to the traditional taxonomic approach for characterizing and comparing the diversity of moth communities in two different ecosystems in Gabon. Though sampling remains very incomplete, as evidenced by the high proportion (59%) of species represented by singletons, our results reveal an outstanding diversity. With about 3500 specimens sequenced and representing 1385 BINs (Barcode Index Numbers, used as a proxy to species) in 23 families, the diversity of moths in the two sites sampled is higher than the current number of species listed for the entire country, highlighting the huge gap in biodiversity knowledge for this country. Both seasonal and spatial turnovers are strikingly high (18.3% of BINs shared between seasons, and 13.3% between sites) and draw attention to the need to account for these when running regional surveys. Our results also highlight the richness and singularity of savannah environments and emphasize the status of Central African ecosystems as hotspots of biodiversity.
Collapse
Affiliation(s)
- Sylvain Delabye
- Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760, 37005, České Budjovice, Czech Republic
- Biology Center, Institute of Entomology, The Czech Academy of Science, Branišovská 31, 37005, České Budějovice, Czech Republic
| | - Rodolphe Rougerie
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, 57 rue Cuvier, CP 50, 75005 Paris, France
| | - Sandrine Bayendi
- Institut de Recherches Agronomique et Forestière (IRAF–CENAREST), Libreville, Gabon
| | | | - Evgeny V. Zakharov
- Centre for Biodiversity Genomics, Biodiversity Institute of Ontario, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Jeremy R. deWaard
- Centre for Biodiversity Genomics, Biodiversity Institute of Ontario, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Paul D.N. Hebert
- Centre for Biodiversity Genomics, Biodiversity Institute of Ontario, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Roger Kamgang
- Laboratoire Evolution, Génomes, Comportement, Ecologie (EGCE UMR 247, IRD–CNRS–Université Paris-Sud), Avenue de la Terrasse, Bâtiment 13, Boite Postale 1, 91198 Gif sur Yvette, France
| | - Philippe Le Gall
- Laboratoire Evolution, Génomes, Comportement, Ecologie (EGCE UMR 247, IRD–CNRS–Université Paris-Sud), Avenue de la Terrasse, Bâtiment 13, Boite Postale 1, 91198 Gif sur Yvette, France
| | - Carlos Lopez-Vaamonde
- INRA, UR633, Zoologie Forestière, F-45075 Orléans, France; Institut de Recherche sur la Biologie de l’Insecte, UMR 7261 CNRS, Université de Tours, UFR Sciences et Techniques, Tours, France
| | - Jacques-François Mavoungou
- Institut de Recherches en Ecologie Tropicale (IRET–CENAREST), Libreville, Gabon
- Département de Biologie, Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 943, Franceville, Gabon
| | - Ghislain Moussavou
- Institut de Recherches en Ecologie Tropicale (IRET–CENAREST), Libreville, Gabon
| | - Nicolas Moulin
- Nicolas Moulin Entomologiste, 82 route de l’Ecole, 76680 Montérolier, France
| | - Richard Oslisly
- Agence Nationale des Parcs Nationaux (ANPN), BP 20379, Libreville, Gabon
- Laboratoire Patrimoines Locaux et Gouvernance (PALOC) UMR 208, IRD-MNHN, 57 rue Cuvier - Case Postale 26, 75231 Paris cedex 05, France
| | - Nil Rahola
- International Centre for Medical Research (CIRMF), Franceville, Gabon
| | - David Sebag
- Normandie Université, UNIROUEN, UNICAEN, CNRS, M2C UMR 6143, Place Emile Blondel - Bâtiment IRESE A, 76821 Mont Saint Aignan Cedex, France
| | - Thibaud Decaëns
- Centre d’Ecologie Fonctionnelle et Evolutive (CEFE UMR 5175, CNRS–Université de Montpellier–Université Paul-Valéry Montpellier–EPHE), 1919 Route de Mende, F-34293 Montpellier, France
| |
Collapse
|
5
|
Lamarre GPA, Juin Y, Lapied E, Le Gall P, Nakamura A. Using field-based entomological research to promote awareness about forest ecosystem conservation. NC 2018. [DOI: 10.3897/natureconservation.29.26876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Interactions between plants, insect herbivores and associated predators represent the majority of terrestrial biodiversity. Insects are vital food sources for many other organisms and provide important ecosystem functions and services including pollination, waste removal and biological control. We propose a complete and reproducible education programme to guide students to understand the importance of managing and conserving forest ecosystems in their region through the study of insect ecology and natural history. Our programme involved lectures, workshops and field surveys of insects with a group of 60 high school students in Eastern Africa (Ethiopia). It addresses the key stages of an entomological research project including: 1) general entomological knowledge and understanding the role of insects in terrestrial diversity and in ecosystem functioning and services; (2) the proposal of simple research questions including hypothesis development and evaluation using scientific literature, 3) fieldwork using different types of light traps; 4) sorting and identification of the insect orders using simple diagnostic keys and illustrated plates; 5) analysing and interpreting the results and 6) demonstrating findings to peers and a public audience. Identifying insects, exploring their natural history and understanding their functions in the field bring the students towards a better understanding and awareness of the importance of forest ecosystem conservation.
Collapse
|
6
|
Fogang Mba AR, Kansci G, Viau M, Ribourg L, Fogoh Muafor J, Hafnaoui N, Le Gall P, Genot C. Growing conditions and morphotypes of African palm weevil ( Rhynchophorus phoenicis ) larvae influence their lipophilic nutrient but not their amino acid compositions. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
7
|
Blaizot R, Vanhecke C, Le Gall P, Duvignaud A, Receveur MC, Malvy D. Furuncular myiasis for the Western dermatologist: treatment in outpatient consultation. Int J Dermatol 2017; 57:227-230. [PMID: 29090455 DOI: 10.1111/ijd.13815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 09/14/2017] [Accepted: 09/22/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Furuncular myiasis is likely to be seen by Western dermatologists because of the increasing number of international travelers but remains unfamiliar to most of them, who tend to refer these patients to hospitals. Different treatments have been proposed, but many of them are not achievable in outpatient consultation. METHODS We reported three typical cases of furuncular myiasis, according to each species involved, and proposed diagnostic and therapeutic guidelines for dermatologists in outpatient consultation. RESULTS One patient, complaining of an inflammatory nodule of the leg with a central punctum, was diagnosed with Dermatobia hominis infection, after a forest walk in French Guiana. One woman returned from Senegal with a nodule of the left buttock. She had been infected by a Cordylobia anthropophaga larva after drying her underwear under a mango tree. One woman living in Cameroon presented with scalp nodules, pain, fatigue, and facial edema. She had been infected by more than 40 larvae of Cordylobia rodhaini after drying her sheets under a mango tree. Manual extraction ensured complete healing in the three patients. We used neither doppler ultrasound nor occlusive dressing. Diagnosis was immediately made thanks to the typical clinical stories. CONCLUSIONS The diagnosis of furuncular myiasis requires only clinical skills and basic knowledge of life cycles. The treatment varies slightly depending on the species involved but is achievable in outpatient consultation and does not require occlusive dressing.
Collapse
Affiliation(s)
- Romain Blaizot
- Dermatology Department, Hôpital Andrée Rosemon, Cayenne, French Guiana
| | | | - Philippe Le Gall
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, University of Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | | | - Denis Malvy
- Tropical Medicine Department, University Hospital Center, Bordeaux, France
| |
Collapse
|
8
|
Meyin A Ebong S, García-Peña GE, Pluot-Sigwalt D, Marsollier L, Le Gall P, Eyangoh S, Guégan JF. Ecology and Feeding Habits Drive Infection of Water Bugs with Mycobacterium ulcerans. Ecohealth 2017; 14:329-341. [PMID: 28315039 DOI: 10.1007/s10393-017-1228-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 02/16/2017] [Accepted: 02/19/2017] [Indexed: 06/06/2023]
Abstract
Mycobacterium ulcerans (MU), the causative agent of Buruli ulcer, is present in a wide spectrum of environments, including terrestrial and aquatic ecosystems in tropical regions. The most promising studies on the epidemiological risk of this disease suggest that some ecological settings may favor infection of animals with MU including human. A species' needs and impacts on resources and the environment, i.e., its ecological niche, may influence its susceptibility to be infected by this microbial form. For example, some Naucoridae may dive in fresh waters to prey upon infected animals and thus may get infected with MU. However, these studies have rarely considered that inference on the ecological settings favoring infection and transmission may be confounded because host carrier sister species have similar ecological niches, and potentially the same host-microbe interactions. Hence, a relationship between the ecological niche of Naucoridae and its infection with MU may be due to a symbiotic relationship between the host and the pathogen, rather than its ecological niche. To account for this confounding effect, we investigated the relationships between surrogates of the ecological niche of water bug species and their susceptibility to MU, by performing phylogenetic comparative analyses on a large dataset of 11 families of water bugs collected in 10 different sites across Cameroon, central Africa. Our results indicate that MU circulates and infects a couple of host taxa, i.e., Belostomatidae, Naucoridae, living both in the aquatic vegetation and as predators inside the trophic network and sister species of water bugs have indeed similar host-microbe interactions with MU.
Collapse
Affiliation(s)
- Solange Meyin A Ebong
- UMR MIVEGEC IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, BP 64501, 34394, Montpellier Cedex, France.
- Service de Mycobactériologie, Centre Pasteur du Cameroun, BP 1274, Yaoundé, Cameroon.
- Laboratoire de Parasitologie et Ecologie, Faculté des Sciences, Université de Yaoundé I, Yaoundé, Cameroon.
| | - Gabriel E García-Peña
- UMR MIVEGEC IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, BP 64501, 34394, Montpellier Cedex, France
- Centre de Synthèse et d'Analyse sur la Biodiversité (CESAB), 13857, Aix-en-Provence Cedex 3, France
| | - Dominique Pluot-Sigwalt
- Département Systématique et Evolution, UMR7205 CNRS/MNHN, Museum National d'Histoire Naturelle, Paris, France
| | - Laurent Marsollier
- Inserm Avenir ATOMycA CRCNA Inserm U892 & CNRS U6299, Université et CHU d'Angers, Angers, France
| | - Philippe Le Gall
- UMR EGCE IRD, CNRS et Université Paris-Sud Orsay, Centre CNRS de Gif-sur-Yvette, 91198, Gif-sur-Yvette Cedex, France
| | - Sara Eyangoh
- Service de Mycobactériologie, Centre Pasteur du Cameroun, BP 1274, Yaoundé, Cameroon
| | - Jean-François Guégan
- UMR MIVEGEC IRD, CNRS, Université de Montpellier, Centre IRD de Montpellier, BP 64501, 34394, Montpellier Cedex, France
| |
Collapse
|
9
|
Meyin A Ebong S, Petit E, Le Gall P, Chen PP, Nieser N, Guilbert E, Njiokou F, Marsollier L, Guégan JF, Pluot-Sigwalt D, Eyangoh S, Harry M. Molecular Species Delimitation and Morphology of Aquatic and Sub-Aquatic Bugs (Heteroptera) in Cameroon. PLoS One 2016; 11:e0154905. [PMID: 27149077 PMCID: PMC4858268 DOI: 10.1371/journal.pone.0154905] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 04/20/2016] [Indexed: 11/18/2022] Open
Abstract
Aquatic and semi-aquatic bugs (Heteroptera) represent a remarkable diversity and a resurging interest has been given to documenting at the species level these insects inhabiting Cameroon in Central Africa due to their potential implication in the transmission of the bacterium Mycobacterium ulcerans, the causal agent of Buruli ulcer, an emerging human disease. A survey was carried out over two years in Cameroon. Morphological analyses were done in two steps. A first step consisted in separating the specimens based on broadly shared characters into morphotypes. The specimens were then separated into two independent batches containing each the same representation of each morphotype. One batch (309 specimens) was used by taxonomy experts on aquatic bugs for species level identification and/or to reconcile nymph with their corresponding adult species. The second batch (188 specimens) was used to define species based on the COI DNA sequences (standard sequence used for "DNA barcoding") and using the Automatic Barcode Gap Discovery (ABGD) method. The first morphological analysis step separated the specimens into 63 different morphotypes (49 adults and 14 nymphs), which were then found to belong to 54 morphological species in the infra-orders Gerromorpha and Nepomorpha based on the species-level morphological identification, and 41-45 putative molecular species according to the gap value retained in the ABGD. Integrating morphology and "DNA barcoding" reconciled all the specimens into 62 aquatic bug species in Cameroon. Generally, we obtained a good congruence between species a priori identified based on morphology from adult morphotypes and molecular putative species. Moreover, molecular identification has allowed the association of 86% of nymphs with adults. This work illustrates the importance of integrative taxonomy.
Collapse
Affiliation(s)
- Solange Meyin A Ebong
- Institut de Recherche pour le Développement, BP 1857, Yaoundé, Cameroon
- Service de Mycobactériologie, Centre Pasteur du Cameroun, BP 1274, Yaoundé, Cameroon
- Université de Yaoundé I, Laboratoire de Parasitologie et Ecologie, Faculté des Sciences, Yaoundé, Cameroon
- * E-mail:
| | - Elsa Petit
- UMR EGCE (Évolution, Génomes, Comportement, Écologie), CNRS IRD- Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, Gif-sur-Yvette, France
| | - Philippe Le Gall
- Institut de Recherche pour le Développement, BP 1857, Yaoundé, Cameroon
- UMR EGCE (Évolution, Génomes, Comportement, Écologie), CNRS IRD- Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, Gif-sur-Yvette, France
| | - Ping-Ping Chen
- National Museum of Natural History, Naturalis, Leiden, Netherlands
| | - Nico Nieser
- National Museum of Natural History, Naturalis, Leiden, Netherlands
| | - Eric Guilbert
- Museum National d’Histoire Naturelle, Département Systématique et Evolution, UMR7205 CNRS/MNHN, Paris, France
| | - Flobert Njiokou
- Université de Yaoundé I, Laboratoire de Parasitologie et Ecologie, Faculté des Sciences, Yaoundé, Cameroon
| | - Laurent Marsollier
- Inserm Avenir ATOMycA CRCNA Inserm U892 & CNRS U6299, Université et CHU d'Angers, Angers, France
| | - Jean-François Guégan
- UMR MIVEGEC IRD, CNRS, Universités de Montpellier, Centre IRD de Montpellier, Montpellier, France
| | - Dominique Pluot-Sigwalt
- Museum National d’Histoire Naturelle, Département Systématique et Evolution, UMR7205 CNRS/MNHN, Paris, France
| | - Sara Eyangoh
- Service de Mycobactériologie, Centre Pasteur du Cameroun, BP 1274, Yaoundé, Cameroon
| | - Myriam Harry
- UMR EGCE (Évolution, Génomes, Comportement, Écologie), CNRS IRD- Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, Gif-sur-Yvette, France
| |
Collapse
|
10
|
Landier J, Constantin de Magny G, Garchitorena A, Guégan JF, Gaudart J, Marsollier L, Le Gall P, Giles-Vernick T, Eyangoh S, Fontanet A, Texier G. Seasonal Patterns of Buruli Ulcer Incidence, Central Africa, 2002-2012. Emerg Infect Dis 2016. [PMID: 26196525 PMCID: PMC4517715 DOI: 10.3201/eid2108.141336] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To determine when risk for Buruli ulcer is highest, we examined seasonal patterns in a highly disease-endemic area of Cameroon during 2002–2012. Cases peaked in March, suggesting that risk is highest during the high rainy season. During and after this season, populations should increase protective behaviors, and case detection efforts should be intensified.
Collapse
|
11
|
Vanhecke C, Nguimfack RNK, Lemarchand J, Reichart V, Le Gall P. Œdème du visage provoqué par une myiase furonculoïde multifocale à Cordylobia rodhaini à Yaoundé - Cameroun. Presse Med 2015; 44:564-6. [DOI: 10.1016/j.lpm.2014.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 11/05/2014] [Indexed: 10/24/2022] Open
|
12
|
Carolan K, Garchitorena A, García-Peña GE, Morris A, Landier J, Fontanet A, Le Gall P, Texier G, Marsollier L, Gozlan RE, Eyangoh S, Lo Seen D, Guégan JF. Topography and land cover of watersheds predicts the distribution of the environmental pathogen Mycobacterium ulcerans in aquatic insects. PLoS Negl Trop Dis 2014; 8:e3298. [PMID: 25375173 PMCID: PMC4222759 DOI: 10.1371/journal.pntd.0003298] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 09/25/2014] [Indexed: 11/25/2022] Open
Abstract
Background An understanding of the factors driving the distribution of pathogens is useful in preventing disease. Often we achieve this understanding at a local microhabitat scale; however the larger scale processes are often neglected. This can result in misleading inferences about the distribution of the pathogen, inhibiting our ability to manage the disease. One such disease is Buruli ulcer, an emerging neglected tropical disease afflicting many thousands in Africa, caused by the environmental pathogen Mycobacterium ulcerans. Herein, we aim to describe the larger scale landscape process describing the distribution of M. ulcerans. Methodology Following extensive sampling of the community of aquatic macroinvertebrates in Cameroon, we select the 5 dominant insect Orders, and conduct an ecological niche model to describe how the distribution of M. ulcerans positive insects changes according to land cover and topography. We then explore the generalizability of the results by testing them against an independent dataset collected in a second endemic region, French Guiana. Principal Findings We find that the distribution of the bacterium in Cameroon is accurately described by the land cover and topography of the watershed, that there are notable seasonal differences in distribution, and that the Cameroon model does not predict the distribution of M. ulcerans in French Guiana. Conclusions/Significance Future studies of M. ulcerans would benefit from consideration of local structure of the local stream network in future sampling, and further work is needed on the reasons for notable differences in the distribution of this species from one region to another. This work represents a first step in the identification of large-scale environmental drivers of this species, for the purposes of disease risk mapping. Many pathogens persist in the environment, and an understanding of where they are can assist in disease control, allowing us to identify areas of risk to local human populations. Herein, we use general linear models to describe the distribution of a particular environmental pathogen, Mycobacterium ulcerans, describing the landscape conditions correlated with the presence of this pathogen in local biota, and mapping the distribution of these habitats in a region of Cameroon, Africa. Our findings identify the importance of the watershed as a factor determining the distribution of the bacterium, where landscape conditions upstream of the sample site can influence the abundance of the bacterium in downstream sites. We find that the bacterium has notable seasonal changes in its distribution, between the wet and dry seasons, which may have implications for human health. We also discuss sensitivity of these models to extrapolation, finding that they work well in the African region and underperforming when extrapolated to another region in South America.
Collapse
Affiliation(s)
- Kevin Carolan
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- UMR Territoires, Environnement, Télédétection et Information Spatiale (TETIS) CIRAD, Montpellier, France
- Unité d'Epidémiologie de Maladies Emergentes, Institut Pasteur, Paris, France
- * E-mail:
| | - Andres Garchitorena
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- Ecole des Hautes Etudes en Santé Publique, Rennes, France
| | - Gabriel E. García-Peña
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- Centre de Synthèse et d'Analyse sur la Biodiversité -CESAB. Bâtiment Henri Poincaré, Domaine du Petit Arbois. Aix-en-Provence, France
| | - Aaron Morris
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- Bournemouth University, School of Applied Sciences, Dorset, United Kingdom
| | - Jordi Landier
- Unité d'Epidémiologie de Maladies Emergentes, Institut Pasteur, Paris, France
- Service d'épidémiologie et de santé publique, Centre Pasteur du Cameroun, Réseau International des Instituts Pasteur, Yaoundé, Cameroun
| | - Arnaud Fontanet
- Unité d'Epidémiologie de Maladies Emergentes, Institut Pasteur, Paris, France
- Chaire Santé et Développement, Conservatoire National des Arts et Métiers, Paris, France
| | - Philippe Le Gall
- Institut de Recherche pour le Développement (IRD), UR 072, Laboratoire Evolution, Génomes et Spéciation, UPR 9034, Centre National de la Recherche Scientifique (CNRS), Gif sur Yvette, France et Université Paris-Sud 11, Orsay, France
| | - Gaëtan Texier
- Service d'épidémiologie et de santé publique, Centre Pasteur du Cameroun, Réseau International des Instituts Pasteur, Yaoundé, Cameroun
- UMR 912 - SESSTIM - INSERM/IRD/Aix-Marseille Université Faculté de Médecine - 27, Marseille, France
| | - Laurent Marsollier
- ATOMycA, Inserm Avenir Team, CRCNA, Inserm U892, 6299 CNRS and LUNAM, Angers, France
| | - Rodolphe E. Gozlan
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- Bournemouth University, School of Applied Sciences, Dorset, United Kingdom
- UMR 207 BOREA IRD-MNHN-Université Pierre et Marie Curie, Muséum National d'Histoire Naturelle, Paris, France
| | - Sara Eyangoh
- Service de Mycobactériologie, Centre Pasteur du Cameroun, Réseau International des Instituts Pasteur, Yaoundé, Cameroun
| | - Danny Lo Seen
- UMR Territoires, Environnement, Télédétection et Information Spatiale (TETIS) CIRAD, Montpellier, France
| | - Jean-Francois Guégan
- Unité mixte de recherche (UMR) Maladies Infectieuses et Vecteurs: Écologie, Génétique, Evolution, et Contrôle (MIVEGEC) IRD-CNRS-Universities of Montpellier I and II, Centre IRD de Montpellier, Montpellier, France
- Ecole des Hautes Etudes en Santé Publique, Rennes, France
| |
Collapse
|
13
|
Marion E, Landier J, Boisier P, Marsollier L, Fontanet A, Le Gall P, Aubry J, Djeunga N, Umboock A, Eyangoh S. Geographic expansion of Buruli ulcer disease, Cameroon. Emerg Infect Dis 2011; 17:551-3. [PMID: 21392458 DOI: 10.3201/eid1703.091859] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
14
|
Marion E, Landier J, Boisier P, Marsollier L, Fontanet A, Le Gall P, Aubry J, Djeunga N, Umboock A, Eyangoh S. Geographic Expansion of Buruli Ulcer Disease, Cameroon. Emerg Infect Dis 2011. [PMID: 21392458 PMCID: PMC3165989 DOI: 10.3201/eid1703091859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|