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Gouzerh F, Vigo G, Dormont L, Buatois B, Hervé MR, Mancini M, Maraver A, Thomas F, Ganem G. Urinary VOCs as biomarkers of early stage lung tumour development in mice. Cancer Biomark 2024; 39:113-125. [PMID: 37980646 PMCID: PMC11002722 DOI: 10.3233/cbm-230070] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 10/05/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Lung cancer is the primary cause of cancer-induced death. In addition to prevention and improved treatment, it has increasingly been established that early detection is critical to successful remission. OBJECTIVE The aim of this study was to identify volatile organic compounds (VOCs) in urine that could help diagnose mouse lung cancer at an early stage of its development. METHODS We analysed the VOC composition of urine in a genetically engineered lung adenocarcinoma mouse model with oncogenic EGFR doxycycline-inducible lung-specific expression. We compared the urinary VOCs of 10 cancerous mice and 10 healthy mice (controls) before and after doxycycline induction, every two weeks for 12 weeks, until full-blown carcinomas appeared. We used SPME fibres and gas chromatography - mass spectrometry to detect variations in cancer-related urinary VOCs over time. RESULTS This study allowed us to identify eight diagnostic biomarkers that help discriminate early stages of cancer tumour development (i.e., before MRI imaging techniques could identify it). CONCLUSION The analysis of mice urinary VOCs have shown that cancer can induce changes in odour profiles at an early stage of cancer development, opening a promising avenue for early diagnosis of lung cancer in other models.
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Affiliation(s)
- Flora Gouzerh
- CREEC/MIVEGEC, Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
- CEFE, Université Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, Montpellier, France
| | - Gwenaëlle Vigo
- CREEC/MIVEGEC, Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Laurent Dormont
- CEFE, Université Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, Montpellier, France
| | - Bruno Buatois
- CEFE, Université Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, Montpellier, France
| | - Maxime R. Hervé
- IGEPP, Institut de Génétique, Environnement et Protection des Plantes, INRAE, Institut Agro, Université de Rennes, Rennes, France
| | - Maicol Mancini
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Inserm U1194-ICM-Université Montpellier, Montpellier, France
| | - Antonio Maraver
- IRCM, Institut de Recherche en Cancérologie de Montpellier, Inserm U1194-ICM-Université Montpellier, Montpellier, France
| | - Frédéric Thomas
- CREEC/MIVEGEC, Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Guila Ganem
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
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2
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Qiu T, Aravena MC, Ascoli D, Bergeron Y, Bogdziewicz M, Boivin T, Bonal R, Caignard T, Cailleret M, Calama R, Calderon SD, Camarero JJ, Chang-Yang CH, Chave J, Chianucci F, Courbaud B, Cutini A, Das AJ, Delpierre N, Delzon S, Dietze M, Dormont L, Espelta JM, Fahey TJ, Farfan-Rios W, Franklin JF, Gehring CA, Gilbert GS, Gratzer G, Greenberg CH, Guignabert A, Guo Q, Hacket-Pain A, Hampe A, Han Q, Holik J, Hoshizaki K, Ibanez I, Johnstone JF, Journé V, Kitzberger T, Knops JMH, Kunstler G, Kurokawa H, Lageard JGA, LaMontagne JM, Lefevre F, Leininger T, Limousin JM, Lutz JA, Macias D, Marell A, McIntire EJB, Moore CM, Moran E, Motta R, Myers JA, Nagel TA, Naoe S, Noguchi M, Oguro M, Parmenter R, Pearse IS, Perez-Ramos IM, Piechnik L, Podgorski T, Poulsen J, Redmond MD, Reid CD, Rodman KC, Rodriguez-Sanchez F, Samonil P, Sanguinetti JD, Scher CL, Seget B, Sharma S, Shibata M, Silman M, Steele MA, Stephenson NL, Straub JN, Sutton S, Swenson JJ, Swift M, Thomas PA, Uriarte M, Vacchiano G, Whipple AV, Whitham TG, Wion AP, Wright SJ, Zhu K, Zimmerman JK, Zywiec M, Clark JS. Masting is uncommon in trees that depend on mutualist dispersers in the context of global climate and fertility gradients. Nat Plants 2023:10.1038/s41477-023-01446-5. [PMID: 37386149 DOI: 10.1038/s41477-023-01446-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 05/17/2023] [Indexed: 07/01/2023]
Abstract
The benefits of masting (volatile, quasi-synchronous seed production at lagged intervals) include satiation of seed predators, but these benefits come with a cost to mutualist pollen and seed dispersers. If the evolution of masting represents a balance between these benefits and costs, we expect mast avoidance in species that are heavily reliant on mutualist dispersers. These effects play out in the context of variable climate and site fertility among species that vary widely in nutrient demand. Meta-analyses of published data have focused on variation at the population scale, thus omitting periodicity within trees and synchronicity between trees. From raw data on 12 million tree-years worldwide, we quantified three components of masting that have not previously been analysed together: (i) volatility, defined as the frequency-weighted year-to-year variation; (ii) periodicity, representing the lag between high-seed years; and (iii) synchronicity, indicating the tree-to-tree correlation. Results show that mast avoidance (low volatility and low synchronicity) by species dependent on mutualist dispersers explains more variation than any other effect. Nutrient-demanding species have low volatility, and species that are most common on nutrient-rich and warm/wet sites exhibit short periods. The prevalence of masting in cold/dry sites coincides with climatic conditions where dependence on vertebrate dispersers is less common than in the wet tropics. Mutualist dispersers neutralize the benefits of masting for predator satiation, further balancing the effects of climate, site fertility and nutrient demands.
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Affiliation(s)
- Tong Qiu
- Department of Ecosystem Science and Management, Pennsylvania State University, University Park, PA, USA.
| | - Marie-Claire Aravena
- Facultad de Ciencias Forestales y de la Conservacion de la Naturaleza (FCFCN), Universidad de Chile, La Pintana, Santiago, Chile
| | - Davide Ascoli
- Department of Agriculture, Forest and Food Sciences, University of Torino, Grugliasco, Torino, Italy
| | - Yves Bergeron
- Forest Research Institute, University of Quebec in Abitibi-Temiscamingue, Rouyn-Noranda, Quebec, Canada
| | - Michal Bogdziewicz
- Department of Systematic Zoology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
| | - Thomas Boivin
- Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Ecologie des Forets Mediterranennes, Avignon, France
| | - Raul Bonal
- Department of Biodiversity, Ecology and Evolution, Complutense University of Madrid, Madrid, Spain
| | - Thomas Caignard
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Maxime Cailleret
- NRAE, Aix-Marseille University, UMR RECOVER, Aix-en-Provence, France
| | - Rafael Calama
- Centro de Investigacion Forestal (INIA-CSIC), Madrid, Spain
| | - Sergio Donoso Calderon
- Facultad de Ciencias Forestales y de la Conservacion de la Naturaleza (FCFCN), Universidad de Chile, La Pintana, Santiago, Chile
| | - J Julio Camarero
- Instituto Pirenaico de Ecologla, Consejo Superior de Investigaciones Cientificas (IPE-CSIC), Zaragoza, Spain
| | - Chia-Hao Chang-Yang
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Jerome Chave
- Laboratoire Evolution et Diversite Biologique, Toulouse, France
| | | | - Benoit Courbaud
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Andrea Cutini
- Research Centre for Forestry and Wood, Arezzo, Italy
| | - Adrian J Das
- U.S. Geological Survey Western Ecological Research Center, Three Rivers, CA, USA
| | - Nicolas Delpierre
- Universite Paris-Saclay, Centre national de la recherche scientifique, AgroParisTech, Ecologie Systematique et Evolution, Orsay, France
| | - Sylvain Delzon
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Michael Dietze
- Earth and Environment, Boston University, Boston, MA, USA
| | - Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS), Montpellier, France
| | - Josep Maria Espelta
- Centre de Recerca Ecologica i Aplicacions Forestals (CREAF), Bellaterra, Catalunya, Spain
| | | | - William Farfan-Rios
- Washington University in Saint Louis, Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, USA
| | | | - Catherine A Gehring
- Department of Biological Sciences and Center for Adaptive Western Landscapes, Flagstaff, AZ, USA
| | - Gregory S Gilbert
- Department of Environmental Studies, University of California, Santa Cruz, CA, USA
| | - Georg Gratzer
- Institute of Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Wien, Austria
| | | | | | - Qinfeng Guo
- Eastern Forest Environmental Threat Assessment Center, USDA Forest Service, Southern Research Station, Research Triangle Park, NC, USA
| | - Andrew Hacket-Pain
- Department of Geography and Planning, School of Environmental Sciences, University of Liverpool, Liverpool, UK
| | - Arndt Hampe
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Qingmin Han
- Department of Plant Ecology Forestry and Forest Products Research Institute (FFPRI), Tsukuba, Ibaraki, Japan
| | - Jan Holik
- Department of Forest Ecology, Silva Tarouca Research Institute, Brno, Czech Republic
| | - Kazuhiko Hoshizaki
- Department of Biological Environment, Akita Prefectural University, Akita, Japan
| | - Ines Ibanez
- School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
| | - Jill F Johnstone
- Institute of Arctic Biology, University of Alaska, Fairbanks, AK, USA
| | - Valentin Journé
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Thomas Kitzberger
- Department of Ecology, Instituto de Investigaciones en Biodiversidad y Medioambiente (Consejo Nacional de Investigaciones Cientificas y Tecnicas - Universidad Nacional del Comahue), Bariloche, Argentina
| | - Johannes M H Knops
- Health and Environmental Sciences Department, Xian Jiaotong-Liverpool University, Suzhou, China
| | - Georges Kunstler
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Hiroko Kurokawa
- Department of Forest Vegetation, Forestry and Forest Products Research Institute, Tsukuba, Japan, Ibaraki
| | - Jonathan G A Lageard
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | | | - Francois Lefevre
- Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Ecologie des Forets Mediterranennes, Avignon, France
| | - Theodor Leininger
- USDA, Forest Service, Southern Research Station, Stoneville, MS, USA
| | | | - James A Lutz
- Department of Wildland Resources, and the Ecology Center, Utah State University, Logan, UT, USA
| | - Diana Macias
- Department of Biology, University of New Mexico, Albuquerque, NM, USA
| | | | | | | | - Emily Moran
- School of Natural Sciences, UC Merced, Merced, CA, USA
| | - Renzo Motta
- Department of Agriculture, Forest and Food Sciences, University of Torino, Grugliasco, Torino, Italy
| | - Jonathan A Myers
- Department of Biology, Washington University in St Louis, St Louis, MO, USA
| | - Thomas A Nagel
- Department of Forestry and Renewable Forest Resources, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Shoji Naoe
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, Iwate, Japan
| | - Mahoko Noguchi
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, Iwate, Japan
| | - Michio Oguro
- Department of Forest Vegetation, Forestry and Forest Products Research Institute, Tsukuba, Japan, Ibaraki
| | - Robert Parmenter
- Valles Caldera National Preserve, National Park Service, Jemez Springs, NM, USA
| | - Ian S Pearse
- U.S. Geological Survey Fort Collins Science Center, Fort Collins, CO, USA
| | - Ignacio M Perez-Ramos
- Instituto de Recursos Naturales y Agrobiologia de Sevilla, Consejo Superior de Investigaciones Cientificas (IRNAS-CSIC), Seville, Andalucia, Spain
| | - Lukasz Piechnik
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - Tomasz Podgorski
- Mammal Research Institute, Polish Academy of Sciences, Bialowieza, Poland
| | - John Poulsen
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Miranda D Redmond
- Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, CO, USA
| | - Chantal D Reid
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Kyle C Rodman
- Ecological Restoration Institute, Northern Arizona University, Flagstaff, AZ, USA
| | | | - Pavel Samonil
- Department of Forest Ecology, Silva Tarouca Research Institute, Brno, Czech Republic
| | - Javier D Sanguinetti
- Bilogo Dpto. Conservacin y Manejo, Parque Nacional Lanin Elordi y Perito Moreno, San Marten de los Andes, Neuqun, Argentina
| | - C Lane Scher
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Barbara Seget
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - Shubhi Sharma
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Mitsue Shibata
- Department of Forest Vegetation, Forestry and Forest Products Research Institute, Tsukuba, Japan, Ibaraki
| | - Miles Silman
- Department of Biology, Wake Forest University, Winston-Salem, NC, USA
| | | | - Nathan L Stephenson
- U.S. Geological Survey Western Ecological Research Center, Three Rivers, CA, USA
| | - Jacob N Straub
- Department of Environmental Science and Ecology, State University of New York-Brockport, Brockport, NY, USA
| | - Samantha Sutton
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | | | - Margaret Swift
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Peter A Thomas
- School of Life Sciences, Keele University, Staffordshire, UK
| | - Maria Uriarte
- Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, NY, USA
| | - Giorgio Vacchiano
- Department of Agricultural and Environmental Sciences - Production, Territory, Agroenergy (DISAA), University of Milan, Milano, Italy
| | - Amy V Whipple
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Thomas G Whitham
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Andreas P Wion
- Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, CO, USA
| | - S Joseph Wright
- Smithsonian Tropical Research Institute, Balboa, Republic of Panama
| | - Kai Zhu
- School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
| | - Jess K Zimmerman
- Department of Environmental Sciences, University of Puerto Rico, Rio Piedras, PR, USA
| | - Magdalena Zywiec
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - James S Clark
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
- Nicholas School of the Environment, Duke University, Durham, NC, USA
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Gouzerh F, Ganem G, Pichevin A, Dormont L, Thomas F. Ability of animals to detect cancer odors. Biochim Biophys Acta Rev Cancer 2023; 1878:188850. [PMID: 36528192 DOI: 10.1016/j.bbcan.2022.188850] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/12/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
The olfactory capacity of animals has long been used by humans to help with various activities, e.g., hunting, detecting mines, locating people, and diagnosing diseases. Cancer is among the leading diseases causing death worldwide. Several recent studies have underscored the benefit of using scent to detect cancer, and this paper will review the studies using animals to detect tumor scents. A large variety of animals have been used for this purpose-dogs, rodents, insects, and nematodes-and have shown their capacity to detect cancer, with a success rate close to 90%. Here we discuss these studies, their methodologies, and the animal models used. Finally, we discuss the medical perspectives for cancer diagnosis using odors.
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Affiliation(s)
- Flora Gouzerh
- Centre de Recherches Écologiques et Évolutives sur le Cancer, Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, UMR IRD 224- CNRS 5290- Université de Montpellier, 34394 Montpellier, France; Centre d'Ecologie Fonctionnelle et Evolutive, Université́ de Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, 34293 Montpellier, France.
| | - Guila Ganem
- Institut des Sciences de l'Evolution, ISEM, Université Montpellier, CNRS, IRD, 34095 Montpellier, France
| | - Anaïs Pichevin
- Centre d'Ecologie Fonctionnelle et Evolutive, Université́ de Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, 34293 Montpellier, France
| | - Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive, Université́ de Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, 34293 Montpellier, France
| | - Frédéric Thomas
- Centre de Recherches Écologiques et Évolutives sur le Cancer, Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, UMR IRD 224- CNRS 5290- Université de Montpellier, 34394 Montpellier, France
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Poda SB, Buatois B, Lapeyre B, Dormont L, Diabaté A, Gnankiné O, Dabiré RK, Roux O. No evidence for long-range male sex pheromones in two malaria mosquitoes. Nat Ecol Evol 2022; 6:1676-1686. [DOI: 10.1038/s41559-022-01869-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/01/2022] [Indexed: 11/09/2022]
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Qiu T, Andrus R, Aravena MC, Ascoli D, Bergeron Y, Berretti R, Berveiller D, Bogdziewicz M, Boivin T, Bonal R, Bragg DC, Caignard T, Calama R, Camarero JJ, Chang-Yang CH, Cleavitt NL, Courbaud B, Courbet F, Curt T, Das AJ, Daskalakou E, Davi H, Delpierre N, Delzon S, Dietze M, Calderon SD, Dormont L, Espelta J, Fahey TJ, Farfan-Rios W, Gehring CA, Gilbert GS, Gratzer G, Greenberg CH, Guo Q, Hacket-Pain A, Hampe A, Han Q, Hille Ris Lambers J, Hoshizaki K, Ibanez I, Johnstone JF, Journé V, Kabeya D, Kilner CL, Kitzberger T, Knops JMH, Kobe RK, Kunstler G, Lageard JGA, LaMontagne JM, Ledwon M, Lefevre F, Leininger T, Limousin JM, Lutz JA, Macias D, McIntire EJB, Moore CM, Moran E, Motta R, Myers JA, Nagel TA, Noguchi K, Ourcival JM, Parmenter R, Pearse IS, Perez-Ramos IM, Piechnik L, Poulsen J, Poulton-Kamakura R, Redmond MD, Reid CD, Rodman KC, Rodriguez-Sanchez F, Sanguinetti JD, Scher CL, Schlesinger WH, Schmidt Van Marle H, Seget B, Sharma S, Silman M, Steele MA, Stephenson NL, Straub JN, Sun IF, Sutton S, Swenson JJ, Swift M, Thomas PA, Uriarte M, Vacchiano G, Veblen TT, Whipple AV, Whitham TG, Wion AP, Wright B, Wright SJ, Zhu K, Zimmerman JK, Zlotin R, Zywiec M, Clark JS. Limits to reproduction and seed size-number trade-offs that shape forest dominance and future recovery. Nat Commun 2022; 13:2381. [PMID: 35501313 PMCID: PMC9061860 DOI: 10.1038/s41467-022-30037-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 04/13/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractThe relationships that control seed production in trees are fundamental to understanding the evolution of forest species and their capacity to recover from increasing losses to drought, fire, and harvest. A synthesis of fecundity data from 714 species worldwide allowed us to examine hypotheses that are central to quantifying reproduction, a foundation for assessing fitness in forest trees. Four major findings emerged. First, seed production is not constrained by a strict trade-off between seed size and numbers. Instead, seed numbers vary over ten orders of magnitude, with species that invest in large seeds producing more seeds than expected from the 1:1 trade-off. Second, gymnosperms have lower seed production than angiosperms, potentially due to their extra investments in protective woody cones. Third, nutrient-demanding species, indicated by high foliar phosphorus concentrations, have low seed production. Finally, sensitivity of individual species to soil fertility varies widely, limiting the response of community seed production to fertility gradients. In combination, these findings can inform models of forest response that need to incorporate reproductive potential.
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Journé V, Andrus R, Aravena MC, Ascoli D, Berretti R, Berveiller D, Bogdziewicz M, Boivin T, Bonal R, Caignard T, Calama R, Camarero JJ, Chang-Yang CH, Courbaud B, Courbet F, Curt T, Das AJ, Daskalakou E, Davi H, Delpierre N, Delzon S, Dietze M, Donoso Calderon S, Dormont L, Maria Espelta J, Fahey TJ, Farfan-Rios W, Gehring CA, Gilbert GS, Gratzer G, Greenberg CH, Guo Q, Hacket-Pain A, Hampe A, Han Q, Lambers JHR, Hoshizaki K, Ibanez I, Johnstone JF, Kabeya D, Kays R, Kitzberger T, Knops JMH, Kobe RK, Kunstler G, Lageard JGA, LaMontagne JM, Leininger T, Limousin JM, Lutz JA, Macias D, McIntire EJB, Moore CM, Moran E, Motta R, Myers JA, Nagel TA, Noguchi K, Ourcival JM, Parmenter R, Pearse IS, Perez-Ramos IM, Piechnik L, Poulsen J, Poulton-Kamakura R, Qiu T, Redmond MD, Reid CD, Rodman KC, Rodriguez-Sanchez F, Sanguinetti JD, Scher CL, Marle HSV, Seget B, Sharma S, Silman M, Steele MA, Stephenson NL, Straub JN, Swenson JJ, Swift M, Thomas PA, Uriarte M, Vacchiano G, Veblen TT, Whipple AV, Whitham TG, Wright B, Wright SJ, Zhu K, Zimmerman JK, Zlotin R, Zywiec M, Clark JS. Globally, tree fecundity exceeds productivity gradients. Ecol Lett 2022; 25:1471-1482. [PMID: 35460530 DOI: 10.1111/ele.14012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 11/30/2022]
Abstract
Lack of tree fecundity data across climatic gradients precludes the analysis of how seed supply contributes to global variation in forest regeneration and biotic interactions responsible for biodiversity. A global synthesis of raw seedproduction data shows a 250-fold increase in seed abundance from cold-dry to warm-wet climates, driven primarily by a 100-fold increase in seed production for a given tree size. The modest (threefold) increase in forest productivity across the same climate gradient cannot explain the magnitudes of these trends. The increase in seeds per tree can arise from adaptive evolution driven by intense species interactions or from the direct effects of a warm, moist climate on tree fecundity. Either way, the massive differences in seed supply ramify through food webs potentially explaining a disproportionate role for species interactions in the wet tropics.
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Affiliation(s)
- Valentin Journé
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Robert Andrus
- Department of Geography, University of Colorado Boulder, Boulder, Colorado, USA
| | - Marie-Claire Aravena
- Universidad de Chile, Facultad de Ciencias Forestales y de la Conservacion de la Naturaleza (FCFCN), Santiago, Chile
| | - Davide Ascoli
- Department of Agriculture, Forest and Food Sciences, University of Torino, Grugliasco, TO, Italy
| | - Roberta Berretti
- Department of Agriculture, Forest and Food Sciences, University of Torino, Grugliasco, TO, Italy
| | - Daniel Berveiller
- Universite Paris-Saclay, Centre national de la recherche scientifique, AgroParisTech, Ecologie Systematique et Evolution, Orsay, France
| | - Michal Bogdziewicz
- Department of Systematic Zoology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
| | - Thomas Boivin
- Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Ecologie des Forets Mediterranennes, Avignon, France
| | - Raul Bonal
- Department of Biodiversity, Ecology and Evolution, Complutense University of Madrid, Madrid, Spain
| | - Thomas Caignard
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Rafael Calama
- Centro de Investigacion Forestal (INIA-CSIC), Madrid, Spain
| | - Jesús Julio Camarero
- Instituto Pirenaico de Ecologla, Consejo Superior de Investigaciones Cientificas (IPE-CSIC), Zaragoza, Spain
| | - Chia-Hao Chang-Yang
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Benoit Courbaud
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Francois Courbet
- Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Ecologie des Forets Mediterranennes, Avignon, France
| | - Thomas Curt
- Aix Marseille universite, Institut National de Recherche pour Agriculture, Alimentation et Environnement (IN-RAE), Aix-en-Provence, France
| | - Adrian J Das
- USGS Western Ecological Research Center, Three Rivers, California, USA
| | - Evangelia Daskalakou
- Institute of Mediterranean and Forest Ecosystems, HellenicAgricultural Organization ¨ DEMETER¨, Athens, Greece
| | - Hendrik Davi
- Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Ecologie des Forets Mediterranennes, Avignon, France
| | - Nicolas Delpierre
- Universite Paris-Saclay, Centre national de la recherche scientifique, AgroParisTech, Ecologie Systematique et Evolution, Orsay, France
| | - Sylvain Delzon
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Michael Dietze
- Earth and Environment, Boston University, Boston, Massachusetts, USA
| | - Sergio Donoso Calderon
- Universidad de Chile, Facultad de Ciencias Forestales y de la Conservacion de la Naturaleza (FCFCN), Santiago, Chile
| | - Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS), Montpellier, France
| | - Josep Maria Espelta
- Centre de Recerca Ecologica i Aplicacions Forestals (CREAF), Bellaterra, Catalunya, Spain
| | - Timothy J Fahey
- Natural Resources, Cornell University, Ithaca, New York, USA
| | - William Farfan-Rios
- Center for Conservation and Sustainable Development, Washington University in Saint Louis, Missouri Botanical Garden, St. Louis, Missouri, USA
| | - Catherine A Gehring
- Department of Biological Sciences and Center for Adaptive Western Landscapes, University of Northern Arizona, Flagstaff, Arizona, USA
| | - Gregory S Gilbert
- Department of Environmental Studies, University of California, Santa Cruz, California, USA
| | - Georg Gratzer
- University of Natural Resources and Life Sciences and Institute of Forest Ecology, Wien, Austria
| | - Cathryn H Greenberg
- Bent Creek Experimental Forest, USDA Forest Service, Asheville, North Carolina, USA
| | - Qinfeng Guo
- Eastern Forest Environmental Threat Assessment Center, USDA Forest Service, Southern Research Station, Asheville, North Carolina, USA
| | - Andrew Hacket-Pain
- Department of Geography and Planning, School of Environmental Sciences, University of Liverpool, Liverpool, UK
| | - Arndt Hampe
- Universite Bordeaux, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Biodiversity, Genes, and Communities (BIOGECO), Pessac, France
| | - Qingmin Han
- Department of Plant Ecology Forestry and Forest Products Research Institute (FFPRI), Tsukuba, Ibaraki, Japan
| | | | - Kazuhiko Hoshizaki
- Department of Biological Environment, Akita Prefectural University, Akita, Japan
| | - Ines Ibanez
- School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan, USA
| | - Jill F Johnstone
- Institute of Arctic Biology, University of Alaska, Fairbanks, Alaska, USA
| | - Daisuke Kabeya
- Department of Plant Ecology Forestry and Forest Products Research Institute (FFPRI), Tsukuba, Ibaraki, Japan
| | - Roland Kays
- Department of Forestry and Environmental Resources, NC State University, Raleigh, North Carolina, USA
| | - Thomas Kitzberger
- Department of Ecology, Instituto de Investigaciones en Biodiversidad y Medioambiente (Consejo Nacional de Investigaciones Cientificas y Tecnicas - Universidad Nacional del Comahue), Bariloche, Argentina
| | - Johannes M H Knops
- Health and Environmental Sciences Department, Xian Jiaotong-Liverpool University, Suzhou, China
| | - Richard K Kobe
- Department of Plant Biology, Program in Ecology, Evolutionary Biology, and Behavior, Michigan State University, East Lansing, Michigan, USA
| | - Georges Kunstler
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France
| | - Jonathan G A Lageard
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Jalene M LaMontagne
- Department of Biological Sciences, DePaul University, Chicago, Illinois, USA
| | - Theodor Leininger
- USDA, Forest Service, Southern Research Station, Stoneville, Mississippi, USA
| | | | - James A Lutz
- Department of Wildland Resources, and the Ecology Center, Utah State University, Logan, Utah, USA
| | - Diana Macias
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, USA
| | | | | | - Emily Moran
- School of Natural Sciences, UC Merced, Merced, California, USA
| | - Renzo Motta
- Department of Agriculture, Forest and Food Sciences, University of Torino, Grugliasco, TO, Italy
| | - Jonathan A Myers
- Department of Biology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Thomas A Nagel
- Department of forestry and renewable forest resources, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Kyotaro Noguchi
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, Iwate, Japan
| | | | - Robert Parmenter
- Valles Caldera National Preserve, National Park Service, Jemez Springs, New Mexico, USA
| | - Ian S Pearse
- Fort Collins Science Center, Fort Collins, Colorado, USA
| | - Ignacio M Perez-Ramos
- Inst. de Recursos Naturales y Agrobiologia de Sevilla, Consejo Superior de Investigaciones Cientificas (IRNAS-CSIC), Seville, Andalucia, Spain
| | - Lukasz Piechnik
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - John Poulsen
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | | | - Tong Qiu
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Miranda D Redmond
- Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, Colorado, USA
| | - Chantal D Reid
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Kyle C Rodman
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | | | - Javier D Sanguinetti
- Bilogo Dpto. Conservacin y Manejo Parque Nacional Lanin Elordi y Perito Moreno 8370, San Marten de los Andes, Argentina
| | - C Lane Scher
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Harald Schmidt Van Marle
- Universidad de Chile, Facultad de Ciencias Forestales y de la Conservacion de la Naturaleza (FCFCN), Santiago, Chile
| | - Barbara Seget
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - Shubhi Sharma
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Miles Silman
- Department of Biology, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Michael A Steele
- Department of Biology, Wilkes University, Wilkes-Barre, Pennsylvania, USA
| | | | - Jacob N Straub
- Department of Environmental Science and Ecology, State University of New York-Brockport, Brockport, New York, USA
| | - Jennifer J Swenson
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Margaret Swift
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Peter A Thomas
- School of Life Sciences, Keele University, Staffordshire, UK
| | - Maria Uriarte
- Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, New York, USA
| | - Giorgio Vacchiano
- Department of Agricultural and Environmental Sciences - Production, Territory, Agroenergy (DISAA), University of Milan, Milano, Italy
| | - Thomas T Veblen
- Department of Geography, University of Colorado Boulder, Boulder, Colorado, USA
| | - Amy V Whipple
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Thomas G Whitham
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Boyd Wright
- Botany, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia
| | - S Joseph Wright
- Smithsonian Tropical Research Institute, Balboa, Republic of Panama
| | - Kai Zhu
- Department of Environmental Studies, University of California, Santa Cruz, California, USA
| | - Jess K Zimmerman
- Department of Environmental Sciences, University of Puerto Rico, Rio Piedras, Puerto Rico, USA
| | - Roman Zlotin
- Geography Department and Russian and East European Institute, Bloomington, Indiana, USA
| | - Magdalena Zywiec
- W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
| | - James S Clark
- Universite Grenoble Alpes, Institut National de Recherche pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), St. Martin-d'Heres, France.,Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
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7
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Gouzerh F, Buatois B, Hervé MR, Mancini M, Maraver A, Dormont L, Thomas F, Ganem G. Odours of cancerous mouse congeners: detection and attractiveness. Biol Open 2022; 11:275010. [PMID: 35403195 PMCID: PMC9065363 DOI: 10.1242/bio.059208] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/31/2022] [Indexed: 11/30/2022] Open
Abstract
Chemical communication plays a major role in social interactions. Cancer, by inducing changes in body odours, may alter interactions between individuals. In the framework of research targeting non-invasive methods to detect early stages of cancer development, this study asked whether untrained mice could detect odour changes in cancerous congeners. If yes, were they able to detect cancer at an early developmental stage? Did it influence female preference? Did variations in volatile organic components of the odour source paralleled mice behavioural responses? We used transgenic mice strains developing or not lung cancer upon antibiotic ingestion. We sampled soiled bedding of cancerous mice (CC) and not cancerous mice (NC), at three experimental conditions: before (T0), early stage (T2) and late stage (T12) of cancer development. Habituation/generalisation and two-way preference tests were performed where soiled beddings of CC and NC mice were presented to wild-derived mice. The composition and relative concentration of volatile organic components (VOC) in the two stimuli types were analysed. Females did not show directional preference at any of the experimental conditions, suggesting that cancer did not influence their choice behaviour. Males did not discriminate between CC and NC stimuli at T0 but did so at T2 and T12, indicating that wild-derived mice could detect cancer at an early stage of development. Finally, although the VOC bouquet differed between CC and NC it did not seem to parallel the observed behavioural response suggesting that other types of odorant components might be involved in behavioural discrimination between CC and NC mice. Summary: Male mice could discriminate the smell of cancerous congeners even when the tumour was hardly detectable by other means; however, females did not discriminate against the smell of males carrying cancerous tumours. Odorant molecules other than volatile organic compounds analysed here might explain the observed behaviour.
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Affiliation(s)
- Flora Gouzerh
- CREEC/ MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France.,CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Bruno Buatois
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Maxime R Hervé
- IGEPP, INRAE, Institut Agro, Univ Rennes, 35000, Rennes, France
| | | | | | - Laurent Dormont
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Frédéric Thomas
- CREEC/ MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Guila Ganem
- Institut des Sciences de l'Evolution, ISEM, Univ Montpellier, CNRS, IRD, Montpellier, France
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8
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Gouzerh F, Bessière JM, Ujvari B, Thomas F, Dujon AM, Dormont L. Odors and cancer: Current status and future directions. Biochim Biophys Acta Rev Cancer 2021; 1877:188644. [PMID: 34737023 DOI: 10.1016/j.bbcan.2021.188644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 02/07/2023]
Abstract
Cancer is the second leading cause of death in the world. Because tumors detected at early stages are easier to treat, the search for biomarkers-especially non-invasive ones-that allow early detection of malignancies remains a central goal to reduce cancer mortality. Cancer, like other pathologies, often alters body odors, and much has been done by scientists over the last few decades to assess the value of volatile organic compounds (VOCs) as signatures of cancers. We present here a quantitative review of 208 studies carried out between 1984 and 2020 that explore VOCs as potential biomarkers of cancers. We analyzed the main findings of these studies, listing and classifying VOCs related to different cancer types while considering both sampling methods and analysis techniques. Considering this synthesis, we discuss several of the challenges and the most promising prospects of this research direction in the war against cancer.
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Affiliation(s)
- Flora Gouzerh
- CREEC/CANECEV (CREES), Montpellier, France; MIVEGEC, Université de Montpellier, CNRS, IRD, Montpellier, France; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France.
| | - Jean-Marie Bessière
- Ecole Nationale de Chimie de Montpellier, Laboratoire de Chimie Appliquée, Montpellier, France
| | - Beata Ujvari
- Deakin University, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Frédéric Thomas
- CREEC/CANECEV (CREES), Montpellier, France; MIVEGEC, Université de Montpellier, CNRS, IRD, Montpellier, France
| | - Antoine M Dujon
- CREEC/CANECEV (CREES), Montpellier, France; MIVEGEC, Université de Montpellier, CNRS, IRD, Montpellier, France; Deakin University, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Laurent Dormont
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
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9
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Dormont L, Mulatier M, Carrasco D, Cohuet A. Mosquito Attractants. J Chem Ecol 2021; 47:351-393. [PMID: 33725235 DOI: 10.1007/s10886-021-01261-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/18/2021] [Accepted: 03/02/2021] [Indexed: 01/01/2023]
Abstract
Vector control and personal protection against anthropophilic mosquitoes mainly rely on the use of insecticides and repellents. The search for mosquito-attractive semiochemicals has been the subject of intense studies for decades, and new compounds or odor blends are regularly proposed as lures for odor-baited traps. We present a comprehensive and up-to-date review of all the studies that have evaluated the attractiveness of volatiles to mosquitoes, including individual chemical compounds, synthetic blends of compounds, or natural host or plant odors. A total of 388 studies were analysed, and our survey highlights the existence of 105 attractants (77 volatile compounds, 17 organism odors, and 11 synthetic blends) that have been proved effective in attracting one or several mosquito species. The exhaustive list of these attractants is presented in various tables, while the most common mosquito attractants - for which effective attractiveness has been demonstrated in numerous studies - are discussed throughout the text. The increasing knowledge on compounds attractive to mosquitoes may now serve as the basis for complementary vector control strategies, such as those involving lure-and-kill traps, or the development of mass trapping. This review also points out the necessity of further improving the search for new volatile attractants, such as new compound blends in specific ratios, considering that mosquito attraction to odors may vary over the life of the mosquito or among species. Finally, the use of mosquito attractants will undoubtedly have an increasingly important role to play in future integrated vector management programs.
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Affiliation(s)
- Laurent Dormont
- CEFE, Univ Paul Valéry Montpellier 3, CNRS, Univ Montpellier, EPHE, IRD, Montpellier, France.
| | - Margaux Mulatier
- Institut Pasteur de Guadeloupe, Laboratoire d'étude sur le contrôle des vecteurs (LeCOV), Lieu-Dit Morne Jolivièrex, 97139, Les Abymes, Guadeloupe, France
| | - David Carrasco
- MIVEGEC, Univ. Montpellier, IRD, CNRS, Montpellier, France
| | - Anna Cohuet
- MIVEGEC, Univ. Montpellier, IRD, CNRS, Montpellier, France
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10
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Joffard N, Le Roncé I, Langlois A, Renoult J, Buatois B, Dormont L, Schatz B. Floral trait differentiation in Anacamptis coriophora: Phenotypic selection on scents, but not on colour. J Evol Biol 2020; 33:1028-1038. [PMID: 32500947 DOI: 10.1111/jeb.13657] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 05/14/2020] [Accepted: 05/23/2020] [Indexed: 01/26/2023]
Abstract
Current divergent selection may promote floral trait differentiation among conspecific populations in flowering plants. However, whether this applies to complex traits such as colour or scents has been little studied, even though these traits often vary within species. In this study, we compared floral colour and odour as well as selective pressures imposed upon these traits among seven populations belonging to three subspecies of the widespread, generalist orchid Anacamptis coriophora. Colour was characterized using calibrated photographs, and scents were sampled using dynamic headspace extraction and analysed using gas chromatography-mass spectrometry. We then quantified phenotypic selection exerted on these traits by regressing fruit set values on floral trait values. We showed that the three studied subspecies were characterized by different floral colour and odour, with one of the two predominant floral volatiles emitted by each subspecies being taxon-specific. Plant size was positively correlated with fruit set in most populations, whereas we found no apparent link between floral colour and female reproductive success. We detected positive selection on several taxon-specific compounds in A. coriophora subsp. fragrans, whereas no selection was found on floral volatiles of A. coriophora subsp. coriophora and A. coriophora subsp. martrinii. This study is one of the first to document variation in phenotypic selection exerted on floral scents among conspecific populations. Our results suggest that selection could contribute to ongoing chemical divergence among A. coriophora subspecies.
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Affiliation(s)
- Nina Joffard
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
- Evolutionsbiologiskt Centrum (EBC), Uppsala, Sweden
| | - Iris Le Roncé
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
- Département de biologie, École Normale Supérieure de Lyon, Lyon, France
| | - Alban Langlois
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
- Université Toulouse III Paul Sabatier, Toulouse, France
| | - Julien Renoult
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Bruno Buatois
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Bertrand Schatz
- Centre d'Ecologie Fonctionnelle et Evolutive, EPHE-PSL, CNRS, Univ. Montpellier, Univ. Paul Valéry Montpellier 3, IRD, Montpellier, France
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11
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Gaillard B, Simard F, Dormont L, Jay-Robert P, D'Abadie de Lurbe D, Etienne M, Baudin A, Raude J. Is Perceived Exposure to Mosquitoes Associated with Actual Exposure? Results from Studies in High-Risk and Low-Risk Geographic Areas. Am J Trop Med Hyg 2020; 101:976-979. [PMID: 31549615 PMCID: PMC6838563 DOI: 10.4269/ajtmh.19-0074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Perceived exposure to mosquitoes plays a fundamental role in the adoption of a range of protective behaviors aiming to prevent and control mosquito-borne disease. However, it is largely unknown in the present literature to what extent perceived exposure is associated with actual exposure. Moreover, the perception of nuisance may depend on the natural environment in which human populations are living, and especially its epidemiological context. In this study, the hypothesis that perceived exposure is driven by mosquito abundance was tested in two different geographic areas. We compared a range of perceived nuisance measures—collected through questionnaires—with egg number measured within ovitraps located in the south of France, which has been recently colonized by an arbovirus vector, and La Martinique island, a tropical French territory, which has a long history of outbreaks of mosquito-borne pathogens. Unexpectedly, only the nuisance due to mosquito noise was correlated with ovitrap activity in southern France. All other perceived exposure measures, both in the south of France and in Martinique, were not correlated with egg number surrounding households investigated. These results suggest the existence of habituation effects that may disturb the engagement in adaptive behaviors in the face of change in the entomological conditions.
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Affiliation(s)
- Béatrice Gaillard
- MIVEGEC/IRD/CNRS/Montpellier University, Montpellier, France.,CEFE/Univ Paul Valéry Montpellier 3/CNRS/Univ Montpellier/EPHE/IRD/Montpellier, France
| | - Fréderic Simard
- MIVEGEC/IRD/CNRS/Montpellier University, Montpellier, France
| | - Laurent Dormont
- CEFE/Univ Paul Valéry Montpellier 3/CNRS/Univ Montpellier/EPHE/IRD/Montpellier, France
| | - Pierre Jay-Robert
- CEFE/Univ Paul Valéry Montpellier 3/CNRS/Univ Montpellier/EPHE/IRD/Montpellier, France
| | | | | | | | - Jocelyn Raude
- UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerrannée Infection, Marseille, France
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12
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Mulatier M, Pennetier C, Porciani A, Chandre F, Dormont L, Cohuet A. Prior contact with permethrin decreases its irritancy at the following exposure among a pyrethroid-resistant malaria vector Anopheles gambiae. Sci Rep 2019; 9:8177. [PMID: 31160750 PMCID: PMC6546682 DOI: 10.1038/s41598-019-44633-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 05/21/2019] [Indexed: 11/26/2022] Open
Abstract
Insecticide-treated nets (ITNs) remain major components for vector control despite the spread of resistance mechanisms among mosquito populations. Multiple exposures to pyrethroids may induce physiological and behavioral changes in mosquitoes, possibly reducing efficacy of control tools. Despite epidemiological relevance, the effects of multiple exposures to pyrethroids on their efficacy against pyrethroid-resistant mosquitoes has received little interest. In the present study, we assessed the effects of a blood-meal successfully obtained upon a permethrin-treated net on the success at taking a second blood-meal in presence of permethrin in Anopheles gambiae, carrying pyrethroid resistance alleles. We also measured the impact of exposure to permethrin on life-history traits to address the delayed efficacy of ITNs. Our results showed that females that successfully blood-fed upon a permethrin-treated net were no longer inhibited by permethrin at the following exposure. Blood-meal inhibition due to permethrin was not affected by female size nor by exposure of mothers when testing the offspring, allowing to discard the effect of genetic or physiological selection. Besides, in our assays, exposure to permethrin did not affect mosquito fecundity, fertility nor survival. These results give insights to understand the long-term efficacy of ITNs, and allow to reevaluate the criteria used when choosing compounds for fighting malaria mosquitoes.
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Affiliation(s)
- Margaux Mulatier
- MIVEGEC, IRD, CNRS, Univ. Montpellier, Montpellier, France. .,CEFE, Univ Paul Valéry Montpellier 3, CNRS, Univ Montpellier, EPHE, IRD, Montpellier, France.
| | - Cédric Pennetier
- MIVEGEC, IRD, CNRS, Univ. Montpellier, Montpellier, France.,Institut Pierre Richet, Bouaké, Côte d'Ivoire
| | | | | | - Laurent Dormont
- CEFE, Univ Paul Valéry Montpellier 3, CNRS, Univ Montpellier, EPHE, IRD, Montpellier, France
| | - Anna Cohuet
- Institut Pierre Richet, Bouaké, Côte d'Ivoire
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13
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Mulatier M, Porciani A, Nadalin L, Ahoua Alou LP, Chandre F, Pennetier C, Dormont L, Cohuet A. DEET Efficacy Increases With Age in the Vector Mosquitoes Anopheles gambiae s.s. and Aedes albopictus (Diptera: Culicidae). J Med Entomol 2018; 55:1542-1548. [PMID: 30137424 PMCID: PMC6201824 DOI: 10.1093/jme/tjy134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 05/09/2018] [Indexed: 05/04/2023]
Abstract
Old mosquitoes are the most likely to transmit pathogens due to the higher probability that they will be exposed to pathogens, and the time required before a mosquito becomes infectious, the extrinsic incubation period (EIP). However, old mosquitoes are rarely considered in the evaluation of control tools. This study evaluated the effect of mosquito aging on the repellent efficacy of N,N-diethyl-3-methylbenzamide (DEET) in two vector mosquitoes, Anopheles gambiae s.s. (Giles) (Diptera: Culicidae) and Aedes albopictus (Skuse) (Diptera: Culicidae), respective vectors of malaria parasites and arboviruses such as dengue, chikungunya, and Zika viruses. For both mosquito species, DEET-induced inhibition of blood-feeding was assessed in three age classes. Life-history traits related to mosquito fecundity and survival following DEET exposure were also measured. Results showed that, in both species, bloodmeal inhibition induced by DEET was significantly higher in old females (>18 d old) than in younger ones (<13 d old). Life history traits recording showed no combined effects of DEET and aging on mosquito blood engorgement, oviposition rate, number of eggs laid nor survival; however, age effects are reported for all these traits. These results highlight the need for taking into account mosquito age in the evaluation of integrated mosquito management tools. They also suggest that the control of vector-borne pathogens with a long EIP could be improved by targeting old mosquitoes and supports the efficacy of repellents in the fight against mosquito-borne diseases.
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Affiliation(s)
- Margaux Mulatier
- MIVEGEC, IRD, CNRS, Univ. Montpellier, BP, Montpellier Cedex, France
- CEFE, Univ. Paul Valéry Montpellier, CNRS, Univ. Montpellier, EPHE, IRD, Montpellier, France
| | | | - Louis Nadalin
- MIVEGEC, IRD, CNRS, Univ. Montpellier, BP, Montpellier Cedex, France
| | | | - Fabrice Chandre
- MIVEGEC, IRD, CNRS, Univ. Montpellier, BP, Montpellier Cedex, France
| | - Cédric Pennetier
- MIVEGEC, IRD, CNRS, Univ. Montpellier, BP, Montpellier Cedex, France
- Institut Pierre Richet, Bouaké, Côte d’Ivoire
| | - Laurent Dormont
- CEFE, Univ. Paul Valéry Montpellier, CNRS, Univ. Montpellier, EPHE, IRD, Montpellier, France
| | - Anna Cohuet
- MIVEGEC, IRD, CNRS, Univ. Montpellier, BP, Montpellier Cedex, France
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Mulatier M, Ahoua Alou LP, Chandre F, Pennetier C, Dormont L, Cohuet A. Effect of DEET-multiple exposures on behavior and life history traits in the malaria mosquito Anopheles gambiae (s.s.). Parasit Vectors 2018; 11:432. [PMID: 30045761 PMCID: PMC6060454 DOI: 10.1186/s13071-018-3024-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 07/18/2018] [Indexed: 11/10/2022] Open
Abstract
Background Vector-borne diseases are major public health concerns, and their control is threatened by the spread of insecticide resistance in vector populations. In this context, the use of repellents is an alternative approach to limit vector-host interactions. However, prior exposure to repellents is suspected to affect mosquito behavior at the subsequent exposure, possibly reducing the efficacy of the compound. Despite this, the effect of mosquito experience on repellent efficacy remains poorly documented. In the present study, we tested whether a first blood meal successfully obtained upon a DEET-treated net would affect the success at taking a second blood meal in spite of DEET in the malaria mosquito Anopheles gambiae (s.s.). The impact of DEET on mosquito life history traits after the first and the second exposure was also measured, in order to assess the long-term consequences of multiple exposures to DEET in vector insects. Results A first blood meal obtained upon a DEET-treated net did not influence the success of An. gambiae females to take a second blood meal in spite of DEET. However, data showed that a prior exposure to DEET negatively affected all life history traits tested in this study related to fecundity and fertility. DEET pre-exposed females displayed a reduction in blood engorgement at the second exposure, as well as a reduction in the number of eggs laid and in the proportion of offspring that reach adult stage. Also, an increase of mosquito activity was observed during the second blood meal in DEET-pre-exposed females. Taken together, these data suggest an overall impact of DEET exposure on mosquito fitness. Conclusions Our results did not evidence any effect of a prior exposure to DEET on its efficacy during the second exposure. However, data show a negative impact of DEET exposure on mosquito fitness. These results give insights to understand the long-term efficacy of the most used mosquito repellent, and highlight that DEET induces deleterious effects on mosquito fitness in addition to repellency, potentially increasing its efficacy for controlling vector-borne diseases.
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Affiliation(s)
- Margaux Mulatier
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France. .,CEFE, University Paul Valéry Montpellier 3, CNRS, University of Montpellier, EPHE, IRD, Montpellier, France.
| | | | - Fabrice Chandre
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Cédric Pennetier
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France.,Institut Pierre Richet, Bouaké, Côte d'Ivoire
| | - Laurent Dormont
- CEFE, University Paul Valéry Montpellier 3, CNRS, University of Montpellier, EPHE, IRD, Montpellier, France
| | - Anna Cohuet
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
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Porciani A, Diop M, Moiroux N, Kadoke-Lambi T, Cohuet A, Chandre F, Dormont L, Pennetier C. Influence of pyrethroïd-treated bed net on host seeking behavior of Anopheles gambiae s.s. carrying the kdr allele. PLoS One 2017; 12:e0164518. [PMID: 28759566 PMCID: PMC5536278 DOI: 10.1371/journal.pone.0164518] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 10/11/2016] [Accepted: 07/07/2017] [Indexed: 01/01/2023] Open
Abstract
The use of long lasting insecticide nets (LLINs) treated with pyrethroïd is known for its major contribution in malaria control. However, LLINs are suspected to induce behavioral changes in malaria vectors, which may in turn drastically affect their efficacy against Plasmodium sp. transmission. In sub Saharan Africa, where malaria imposes the heaviest burden, the main malaria vectors are widely resistant to pyrethroïds, the insecticide family used on LLINs, which also threatens LLIN efficiency. There is therefore a crucial need for deciphering how insecticide-impregnated materials might affect the host-seeking behavior of malaria vectors in regards to insecticide resistance. In this study, we explored the impact of permethrin-impregnated net on the host attractiveness for Anopheles gambiae mosquitoes, either susceptible to insecticides, or carrying the insecticide resistance conferring allele kdr. Groups of female mosquitoes were released in a dual-choice olfactometer and their movements towards an attractive odor source (a rabbit) protected by insecticide-treated (ITN) or untreated nets (UTN) were monitored. Kdr homozygous mosquitoes, resistant to insecticides, were more attracted by a host behind an ITN than an UTN, while the presence of insecticide on the net did not affect the choice of susceptible mosquitoes. These results suggest that permethrin-impregnated net is detectable by malaria vectors and that the kdr mutation impacts their response to a LLIN protected host. We discuss the implication of these results for malaria vector control.
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Affiliation(s)
- Angélique Porciani
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD) Cotonou, Bénin
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou, Bénin
| | - Malal Diop
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD) Cotonou, Bénin
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou, Bénin
| | - Nicolas Moiroux
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD), Montpellier, France
| | | | - Anna Cohuet
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Fabrice Chandre
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Laurent Dormont
- CNRS UMR 5175, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Montpellier, France
| | - Cédric Pennetier
- MiVEGEC (UM1-UM2-CNRS 5290-IRD 224), Institut de Recherche pour le Développement (IRD) Cotonou, Bénin
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou, Bénin
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Baldacchino F, Manon S, Puech L, Buatois B, Dormont L, Jay-Robert P. Olfactory and behavioural responses of tabanid horseflies to octenol, phenols and aged horse urine. Med Vet Entomol 2014; 28:201-9. [PMID: 24188243 DOI: 10.1111/mve.12038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 04/05/2013] [Revised: 06/17/2013] [Accepted: 06/25/2013] [Indexed: 05/21/2023]
Abstract
Electrophysiological and behavioural responses of females of two tabanid species, Tabanus bromius L. and Atylotus quadrifarius (Loew) (Diptera: Tabanidae), to ammonia, octenol (1-octen-3-ol), phenols and aged horse urine were compared. Electroantennogram (EAG) responses in both species to octenol, 4-methylphenol (4MP), 3-propylphenol (3PP) and a phenol mixture (4MP and 3PP at a ratio of 16 : 1) increased in a dose-dependent fashion. The most effective stimulus was 4MP and synergism between the two phenols may exist. Aged horse urine also elicited strong EAG responses in both species. Using gas chromatography-mass spectrometry (GC-MS) analysis, we identified 29 compounds in horse urine, which included, in particular, ketones, fatty alcohols and phenols, among which 4MP was the most abundant component (~ 80%). Trapping experiments were carried out using Nzi traps baited with various odours. Octenol and the phenol mixture in combination with ammonia increased catches of tabanids by 1.8-2.8 times relative to ammonia alone. Aged horse urine increased catches of T. bromius and A. quadrifarius by 2.2 and 4.1 times, respectively. The high attractiveness of aged horse urine, especially for A. quadrifarius, is not likely to derive from 4MP alone, but from the mixture of various active compounds used in host location.
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Affiliation(s)
- F Baldacchino
- Unité Mixte de Recherche (UMR) 5175, Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry (UM3), Montpellier, France
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Dormont L, Delle-Vedove R, Bessière JM, Schatz B. Floral scent emitted by white and coloured morphs in orchids. Phytochemistry 2014; 100:51-59. [PMID: 24525191 DOI: 10.1016/j.phytochem.2014.01.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 07/15/2013] [Revised: 01/15/2014] [Accepted: 01/17/2014] [Indexed: 06/03/2023]
Abstract
Polymorphism of floral signals, such as colour and odour, is widespread in flowering plants and often considered to be adaptive, reflecting various pollinator preferences for particular floral traits. Several authors have recently hypothesized that particular associations exist between floral colour and scent, which would result from shared biochemistry between these two floral traits. In this study, we compared the chemical composition of floral volatiles emitted by white- and purple-flowered morphs of three different orchid species, including two food-deceptive species (Orchis mascula and Orchis simia) and a food-rewarding species (Anacamptis coriophora fragrans). We found clear interspecific differences in floral odours. As expected from their pollination strategy, the two deceptive orchids showed high inter-individual variation of floral volatiles, whereas the food-rewarding A. c. fragrans showed low variation of floral scent. Floral volatiles did not differ overall between white- and coloured-flowered morphs in O. mascula and A. c. fragrans, while O. simia exhibited different volatile profiles between the two colour morphs. However, a detailed analysis restricted to benzenoid compounds (which are associated with the production of floral anthocyanin pigments) showed that white inflorescences emitted more volatiles of the shikimic pathway than coloured ones, both for O. mascula and O. simia. These results are consistent with the current hypothesis that shared biochemistry creates pleiotropic links between floral colour and scent. Whether intraspecific variation of floral signals actually affects pollinator attraction and influences the reproductive success of these orchids remains to be determined.
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Affiliation(s)
- L Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175 CNRS, 1919 Route de Mende, 34293 Montpellier, France.
| | - R Delle-Vedove
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175 CNRS, 1919 Route de Mende, 34293 Montpellier, France; Laboratoire de Génétique et Evolution des Populations Végétales (GEPV), Université des Sciences et Technologies de Lille 1, 59655 Villeneuve d'Ascq, France
| | - J-M Bessière
- Ecole Nationale Supérieure de Chimie de Montpellier, Laboratoire de Chimie Appliquée, 8 rue de l'Ecole Normale, 34296 Montpellier, France
| | - B Schatz
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175 CNRS, 1919 Route de Mende, 34293 Montpellier, France
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Dormont L, Bessière JM, McKey D, Cohuet A. New methods for field collection of human skin volatiles and perspectives for their application in the chemical ecology of human-pathogen-vector interactions. ACTA ACUST UNITED AC 2013; 216:2783-8. [PMID: 23580718 DOI: 10.1242/jeb.085936] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Odours emitted by human skin are of great interest to biologists in many fields, with practical applications in forensics, health diagnostic tools and the ecology of blood-sucking insect vectors of human disease. Convenient methods are required for sampling human skin volatiles under field conditions. We experimentally compared four modern methods for sampling skin odours: solvent extraction, headspace solid-phase micro-extraction (SPME), and two new techniques not previously used for the study of mammal volatiles, contact SPME and dynamic headspace with a chromatoprobe design. These methods were tested and compared both on European subjects under laboratory conditions and on young African subjects under field conditions. All four methods permitted effective trapping of skin odours, including the major known human skin volatile compounds. In both laboratory and field experiments, contact SPME, in which the time of collection was restricted to 3 min, provided results very similar to those obtained with classical headspace SPME, a method that requires 45 min of collection. Chromatoprobe sampling also proved to be very sensitive, rapid and convenient for the collection of human-produced volatiles in natural settings. Both contact SPME and chromatoprobe design may considerably facilitate the study of human skin volatiles under field conditions, opening new possibilities for examining the olfactory cues mediating the host-seeking behaviour of mosquito vectors implicated in the transmission of major diseases.
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Affiliation(s)
- Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive, CNRS UMR 5175, 1919 Route de Mende, 34293 Montpellier Cedex 5, France.
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Baldacchino F, Cadier J, Porciani A, Buatois B, Dormont L, Jay-Robert P. Behavioural and electrophysiological responses of females of two species of tabanid to volatiles in urine of different mammals. Med Vet Entomol 2013; 27:77-85. [PMID: 22681479 DOI: 10.1111/j.1365-2915.2012.01022.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Urine volatiles from different ungulates (cows, horses and sheep) were tested as bait for tabanids in southeastern France using Nzi traps during the early summer of 2011. Tabanus bromius Linnaeus, 1758 and Atylotus quadrifarius (Loew, 1874) (both: Diptera: Tabanidae) were the most captured species, respectively representing 57% and 41% of all tabanids collected (all of which were female). Horse urine significantly increased catches of T. bromius (1.6-fold) and A. quadrifarius (3.5-fold), and sheep urine significantly increased catches of A. quadrifarius (2.5-fold). In parallel, an electroantennogram (EAG) study was conducted for the first time on these two species, in which EAGs were recorded using 1-octen-3-ol and extracts of the same urine samples used in the field. For T. bromius, the EAG response to 1-octen-3-ol increased quasi-sigmoidally with dose, with a maximum response at ≥100 µg on filter paper. For both species of tabanid, cow and horse urine elicited larger EAGs than did sheep urine. The behavioural implications in host-seeking and feeding habits are discussed.
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Affiliation(s)
- F Baldacchino
- Dynamique et Gouvernance des Systèmes Ecologiques, Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175, Université Paul-Valéry (UM3), Montpellier, France.
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Delle-Vedove R, Juillet N, Bessière JM, Grison C, Barthes N, Pailler T, Dormont L, Schatz B. Colour-scent associations in a tropical orchid: three colours but two odours. Phytochemistry 2011; 72:735-742. [PMID: 21377705 DOI: 10.1016/j.phytochem.2011.02.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 02/01/2011] [Accepted: 02/07/2011] [Indexed: 05/30/2023]
Abstract
Colour and scent are the major pollinator attractants to flowers, and their production may be linked by shared biosynthetic pathways. Species with polymorphic floral traits are particularly relevant to study the joint evolution of floral traits. We used in this study the tropical orchid Calanthe sylvatica from Réunion Island. Three distinct colour varieties are observed, presenting lilac, white or purple flowers, and named respectively C. sylvaticavar.lilacina (hereafter referred as var. lilacina), C. sylvaticavar. alba (var. alba) and C. sylvatica var. purpurea (var. purpurea). We investigated the composition of the floral scent produced by these colour varieties using the non-invasive SPME technique in the wild. Scent emissions are dominated by aromatic compounds. Nevertheless, the presence of the terpenoid (E)-4,8-dimethylnona-1,3,7-triène (DMNT) is diagnostic of var. purpurea, with the volatile organic compounds (VOC) produced by some individuals containing up to 60% of DMNT. We evidence specific colour-scent associations in C. sylvatica, with two distinct scent profiles in the three colour varieties: the lilacina-like profile containing no or very little DMNT (<2%) and the purpurea-like profile containing DMNT (>2%). Calanthe sylvatica var. alba individuals group with one or the other scent profile independently of their population of origin. We suggest that white-flowered individuals have evolved at least twice, once from var. lilacina and at least once from var. purpurea after the colonisation of la Réunion. White-flowered individuals may have been favoured by the particular pollinator fauna characterising the island. These flowering varieties of C. sylvatica, which display three colours but two scents profiles prove that colour is not always a good indicator of odour and that colour-scent associations may be complex, depending on pollination ecology of the populations concerned.
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Affiliation(s)
- Roxane Delle-Vedove
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR CNRS 5175, Montpellier, France.
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Abstract
SUMMARY
The effects of insect larval diet on adult olfactory responses to host-plant or food volatiles are still debated. The induction of adult host preferences has been studied in insects with diverse ecologies, including parasitoids, flower-visitors and phytophagous species. We investigated this question for the first time in a coprophagous insect species. Larvae of the French scarab dung beetle Agrilinus constans were reared on four different artificial substrates containing dung from cattle, horse, sheep or wild boar, and responses of imagos to dung volatiles were then behaviourally tested in an olfactometer. We also reported the first analysis of the composition of different mammal dung volatiles. We showed that adult beetles were more attracted to cattle and sheep dung odours, and that larval feeding experience had no effect on the adult olfactory responses to dung volatiles. A second experiment showed that the presence of other insects inside the dung resource affects the process of dung selection by adults. We identified 64 chemical compounds from dung emissions, and showed that dung volatiles clearly differed among different mammal species, allowing olfactory discrimination by dung beetles. Our results suggest that resource selection in coprophagous insects may be based on innate olfactory preferences. Further experiments should examine whether Agrilinus adults can learn new dung odours, and whether larval diet may influence the behaviour of adults in other coprophagous species.
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Affiliation(s)
- Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive, CNRS UMR 5175, 1919 Route de Mende, 34293 Montpellier Cedex 5, France
| | - Pierre Jay-Robert
- Laboratoire Ecologie des Arthropodes dans les Agroécosystèmes Méditerranéens, CNRS UMR 5175 CEFE, Université Paul Valéry, Route de Mende, 34199 Montpellier Cedex 5, France
| | - Jean-Marie Bessière
- Ecole Nationale Supérieure de Chimie de Montpellier, Laboratoire de Chimie Appliquée, 8 rue de l'Ecole Normale, 34296 Montpellier, France
| | - Sylvie Rapior
- Laboratoire de Botanique, Phytochimie et Mycologie, CNRS UMR 5175 CEFE, Faculté de Pharmacie, Université Montpellier 1, 15 avenue Charles Flahault, 34093 Montpellier Cedex 5, France
| | - Jean-Pierre Lumaret
- Laboratoire Ecologie des Arthropodes dans les Agroécosystèmes Méditerranéens, CNRS UMR 5175 CEFE, Université Paul Valéry, Route de Mende, 34199 Montpellier Cedex 5, France
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Dormont L, Delle-Vedove R, Bessière JM, Key MHM, Schatz B. Helping in food-deceptive orchids? A possible new mechanism maintaining polymorphism of floral signals. Plant Signal Behav 2010; 5:526-7. [PMID: 20139736 PMCID: PMC7080474 DOI: 10.4161/psb.10967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Why different colour morphs have evolved in flowering plants, and how they are maintained in populations, have long intrigued ecologists. The impact of variation in floral colour and odour (the two are frequently associated) on reproductive success remains poorly understood. In European rewardless orchids, many species occasionally show rare white-flowered individuals within populations of the common-coloured morph. In a recent study, we found that in Orchis mascula the presence of rare white-flowered morphs significantly increased the reproductive success (from 6% to 27%) of purple-flowered plants, while success of the white morph remained low. This surprising result appears due solely to floral color polymorphism, which in this species is not associated with odour polymorphism. We hypothesize that colour variation plays the key role in pollinator attraction, and that white-flowered individuals may be regarded to function as "sensory traps". We also propose that the maintenance of white-flowered mutants in O. mascula may result through kin selection, in which they act as helpers increasing the reproductive success of related purple individuals.
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Dormont L, Delle-Vedove R, Bessière JM, Hossaert-Mc Key M, Schatz B. Rare white-flowered morphs increase the reproductive success of common purple morphs in a food-deceptive orchid. New Phytol 2010; 185:300-310. [PMID: 19825015 DOI: 10.1111/j.1469-8137.2009.03052.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
How floral colour polymorphism can be maintained in evolutionary time is still debated. In rewardless orchids, it is unknown whether rare white-flowered morphs differ in scent chemistry from pigmented morphs, and whether such intraspecific variation in floral signals may have an impact on reproductive success. We compared the chemical composition of floral volatiles emitted by white- and purple-flowered morphs of Orchis mascula, and recorded the fruit set of both colour morphs. We also used white ping-pong balls to mimic white-flowered morphs in field bioassays. We found that colour polymorphism was not associated with floral odour polymorphism. Surprisingly, when populations of purple-flowered plants included a few white-flowered individuals, the fruit set of the purple morph increased significantly (from 6 to 27%), while that of the white morph remained low. We obtained the same fourfold increase in fruit set when using ping-pong balls as visual lures, demonstrating the association between colour variation and fruit set, and the key role of visual signals in pollinator attraction. Our results are incompatible with negative frequency-dependent selection, a hypothesis invoked to explain colour polymorphism in other rewardless orchids. We propose several hypotheses to explain the maintenance of white morphs in O. mascula.
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Affiliation(s)
- L Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), CNRS, 1919 Route de Mende, 34293 Montpellier, France.
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Schatz B, Djieto-Lordon C, Dormont L, Bessière JM, McKey D, Blatrix R. A simple non-specific chemical signal mediates defence behaviour in a specialised ant–plant mutualism. Curr Biol 2009; 19:R361-2. [DOI: 10.1016/j.cub.2009.03.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hossaert-McKey M, McKey D, Dormont L. Fungal sex as a private matter: odour signals in a specialized pollination-like insect-fungus mutualism. New Phytol 2008; 178:225-227. [PMID: 18371002 DOI: 10.1111/j.1469-8137.2008.02428.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Martine Hossaert-McKey
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR CNRS 5175, 1919 route de Mende, F-34293 Montpellier Cedex 5, France (*Author for correspondence: tel +33 4 67 61 32 30; fax +33 4 67 41 21 38; email )
| | - Doyle McKey
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR CNRS 5175, 1919 route de Mende, F-34293 Montpellier Cedex 5, France (*Author for correspondence: tel +33 4 67 61 32 30; fax +33 4 67 41 21 38; email )
| | - Laurent Dormont
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR CNRS 5175, 1919 route de Mende, F-34293 Montpellier Cedex 5, France (*Author for correspondence: tel +33 4 67 61 32 30; fax +33 4 67 41 21 38; email )
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Dormont L, Baltensweiler W, Choquet R, Roques A. Larch- and pine-feeding host races of the larch bud moth (Zeiraphera diniana
) have cyclic and synchronous population fluctuations. OIKOS 2006. [DOI: 10.1111/j.2006.0030-1299.15010.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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