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Ecological genomics of social polymorphism in ants

Titel Englisch Ecological genomics of social polymorphism in ants
Gesuchsteller/in Chapuisat Michel
Nummer 146641
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Département d'Ecologie et d'Evolution Faculté de Biologie et de Médecine Université de Lausanne
Hochschule Universität Lausanne - LA
Hauptdisziplin Zoologie
Beginn/Ende 01.03.2014 - 31.10.2017
Bewilligter Betrag 562'920.00
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Alle Disziplinen (2)

Disziplin
Zoologie
Oekologie

Keywords (5)

Social evolution; Social organization; Social insects; Evolutionary ecology; Ecological genomics

Lay Summary (Französisch)

Lead
Génomique écologique du polymorphisme social chez les fourmisDans ce projet, notre objectif est de mieux comprendre les facteurs génomiques et écologiques qui influencent les diverses formes d’organisation sociale des fourmis.
Lay summary

Les espèces animales varient fortement dans leur organisation sociale, mais les causes de ces variations sont encore peu connues. Chez les fourmis certaines espèces possèdent deux formes sociales : leurs colonies ont soit une seule reine (forme monogyne), soit plusieurs reines (forme polygyne). Dans nos études précédentes, nous avons montré que les deux formes sociales d’un fourmi alpine (Formica selysi) différaient dans de nombreux traits d’histoire de vie (diversité génétique, taille corporelle, allocation des ressources, démographie). Dans ce projet, nous proposons d’étudier quels facteurs génétiques et  environnementaux contribuent au maintien des deux formes d’organisation sociale.

A l’aide de milliers de marqueurs génétiques (SNPs) obtenus par séquençage à haut débit (RAD-seq), nous allons déterminer la différenciation génétique entre les individus, colonies, populations et formes sociales provenant de 20 populations situées à diverses altitudes. Nous pourrons ainsi examiner comment les variations d’organisation sociale influencent la répartition de la diversité génétique et les flux de gènes entre colonies, populations et formes sociales. Nous pourrons également évaluer quels facteurs écologiques favorisent une forme sociale ou l'autre, en comparant les populations à basse et haute altitude. Enfin, en détectant les marqueurs génétiques et les régions du génome associées à chaque forme sociale, ou à chaque population, nous allons étudier l'architecture génétique qui sous-tend les variations d’organisation sociale, ou d’autres adaptations à l’environnement. Cette approche permettra de révéler quels facteurs génétiques et écologiques influencent l'organisation sociale des fourmis, ce qui est intéressant pour mieux comprendre comment les comportements sociaux apparaissent et se maintiennent au cours de l’évolution.

Direktlink auf Lay Summary Letzte Aktualisierung: 31.10.2013

Verantw. Gesuchsteller/in und weitere Gesuchstellende

Mitarbeitende

Publikationen

Publikation
Eusociality and cooperation
Keller Laurent, Chapuisat Michel (2017), Eusociality and cooperation, in Kehrer-Sawatzki Hildegard (ed.), 1-7.
Wood ants produce a potent antimicrobial agent by applying formic acid on tree-collected resin
Brutsch Timothée, Jaffuel Geoffrey, Vallat Armelle, Turlings Ted C. J., Chapuisat Michel (2017), Wood ants produce a potent antimicrobial agent by applying formic acid on tree-collected resin, in ECOLOGY AND EVOLUTION, 7(7), 2249-2254.
Ant workers exhibit specialization and memory during raft formation.
Avril Amaury, Purcell Jessica, Chapuisat Michel (2016), Ant workers exhibit specialization and memory during raft formation., in The Science of Nature, 103(5-6), 36-36.
Ants exhibit asymmetric hybridization in a mosaic hybrid zone
Purcell Jessica, Zahnd Sacha, Athanasiades Anouk, Tuerler Rebecca, Chapuisat Michel, Brelsford Alan (2016), Ants exhibit asymmetric hybridization in a mosaic hybrid zone, in MOLECULAR ECOLOGY, 25(19), 4866-4874.
Environmental influence on the phenotype of ant workers revealed by common garden experiment
Purcell Jessica, Pirogan Dorin, Avril Amaury, Bouyarden Farid, Chapuisat Michel (2016), Environmental influence on the phenotype of ant workers revealed by common garden experiment, in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY, 70(3), 357-367.
Social structure varies with elevation in an Alpine ant
Purcell Jessica, Pellissier Loic, Chapuisat Michel (2015), Social structure varies with elevation in an Alpine ant, in MOLECULAR ECOLOGY, 24(2), 498-507.
Ant brood function as life preservers during floods
Purcell Jessica, Avril Avril, Jaffuel Geoffrey, Bates Sarah, Chapuisat Michel (2014), Ant brood function as life preservers during floods, in Plos One, 9, 89211-89211.
Ant queens (Hymenoptera: Formicidae) are attracted to fungal pathogens during the initial stage of colony founding
Brütsch Timothée, Felden Antoine, Reber Anabelle, Chapuisat Michel (2014), Ant queens (Hymenoptera: Formicidae) are attracted to fungal pathogens during the initial stage of colony founding, in Myrmecological News, 20, 71-76.
Convergent Genetic Architecture Underlies Social Organization in Ants
Purcell Jessica, Brelsford Alan, Wurm Yannick, Perrin Nicolas, Chapuisat Michel (2014), Convergent Genetic Architecture Underlies Social Organization in Ants, in CURRENT BIOLOGY, 24(22), 2728-2732.
Evolution. Smells like queen since the Cretaceous
Chapuisat Michel (2014), Evolution. Smells like queen since the Cretaceous, in Science, 343(6168), 254-255.
Foster carers influence brood pathogen resistance in ants
Purcell Jessica, Chapuisat Michel (2014), Foster carers influence brood pathogen resistance in ants, in PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 281(1792), 20141338.
Immune priming and pathogen resistance in ant queens
Galvez Dumas, Chapuisat Michel (2014), Immune priming and pathogen resistance in ant queens, in ECOLOGY AND EVOLUTION, 4(10), 1761-1767.
Impact of helpers on colony productivity in a primitively eusocial bee
Brand Nayuta, Chapuisat Michel (2014), Impact of helpers on colony productivity in a primitively eusocial bee, in Behavioral Ecology and Sociobiology, 68, 291-298.
The evolution of eusociality
Keller Laurent, Chapuisat Michel (2014), The evolution of eusociality, in Losos Jonathan B. (ed.), 697-702.
Transitions in social complexity along elevational gradients reveal a combined impact of season length and development time on social evolution
Kocher Sarah D., Pellissier Loic, Veller Carl, Purcell Jessica, Nowak Martin A., Chapuisat Michel, Pierce Naomi E. (2014), Transitions in social complexity along elevational gradients reveal a combined impact of season length and development time on social evolution, in PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 281(1787), 20140627.
Wood ants protect their brood with tree resin
Brütsch Timothée, Chapuisat Michel (2014), Wood ants protect their brood with tree resin, in Animal Behaviour, 93, 157-161.
No evidence for social immunity in co-founding queen associations
Brütsch Timothée, Avril Amaury, Chapuisat Michel, No evidence for social immunity in co-founding queen associations, in Scientific Reports.

Zusammenarbeit

Gruppe / Person Land
Formen der Zusammenarbeit
Dr Yannick Wurm, Queen Mary, University of London Grossbritannien und Nordirland (Europa)
- Publikation
Alan Brelsford, University of California Riverside Vereinigte Staaten von Amerika (Nordamerika)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
- Publikation
Jessica Purcell, University of California Riverside Vereinigte Staaten von Amerika (Nordamerika)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
- Publikation

Wissenschaftliche Veranstaltungen

Aktiver Beitrag

Titel Art des Beitrags Titel des Artikels oder Beitrages Datum Ort Beteiligte Personen
Invited talk Einzelvortrag Ant social evolution, queen number and supergenes 13.09.2017 University of British Columbia, Vancouver, Kanada Chapuisat Michel;
Entomo.ch 2017 Vortrag im Rahmen einer Tagung Supergenes and social evolution in ants [plenary conference] 03.03.2017 Changins, Schweiz Chapuisat Michel;
European Meeting of the International Union for the Study of Social Insects Vortrag im Rahmen einer Tagung Fine-scale population genomics and sex-biased dispersal in F. selysi 08.08.2016 Helsinki, Finnland Avril Amaury; Chapuisat Michel;
European Meeting of the International Union for the Study of Social Insects Vortrag im Rahmen einer Tagung Social evolution, queen number and supergenes [plenary conference] 08.08.2016 Helsinki, Finnland Chapuisat Michel;
European Meeting of the International Union for the Study of Social Insects Vortrag im Rahmen einer Tagung Bacterial community composition in a socially polymorphic ant 08.08.2016 Helsinki, Finnland Chapuisat Michel; Yek Sze Huei;
The Number of Queens: Causes and Consequences Vortrag im Rahmen einer Tagung Supergenes controlling ant social organization 17.03.2016 Paris, Frankreich Chapuisat Michel;
Proximate and ultimate causes of cooperation Vortrag im Rahmen einer Tagung Supergenes and social evolution 06.01.2016 Trogen, Schweiz Chapuisat Michel;
Invited talk Einzelvortrag Social structure and immunity in ants 12.11.2014 Bern, Schweiz Chapuisat Michel;
IUSSI 2014 Poster The mechanisms of resin use in wood ants 13.07.2014 Cairns, Australien Chapuisat Michel;
IUSSI 2014 Vortrag im Rahmen einer Tagung Social genotype distribution and discrimination in a socially polymorphic ant 13.07.2014 Cairns, Australien Avril Amaury; Purcell Jessica; Chapuisat Michel;
IUSSI 2014 Vortrag im Rahmen einer Tagung Convergent genetic architecture underlies social organization in ants 13.07.2014 Cairns, Australien Purcell Jessica; Chapuisat Michel;
IUSSI 2014 Vortrag im Rahmen einer Tagung Genetic, maternal and social effects on brood resistance in ants 13.07.2014 Cairns, Australien Chapuisat Michel; Purcell Jessica;
Spatial Evolutionary Epidemiology Vortrag im Rahmen einer Tagung Social structure and immunity in ants 03.06.2014 Saint-Martin-de-Londres, Frankreich Chapuisat Michel;


Veranstaltungen zum Wissenstransfer

Aktiver Beitrag

Titel Art des Beitrags Titel des Artikels oder Beitrages Datum Ort Beteiligte Personen
Invited talk - la vie sociale des fourmis; Formation continue, Sylvana Vortrag 16.09.2015 Epalinges, Schweiz


Kommunikation mit der Öffentlichkeit

Kommunikation Titel Medien Ort Jahr
Weitere Aktivitäten Sentier didactique, Les Diablerets Westschweiz 2017
Referate/Veranstaltungen/Ausstellungen « Evolution, gènes et comportement: de la biologie à l’éthique " (Conférence publique, ULB) International 2015
Referate/Veranstaltungen/Ausstellungen La vie sociale des fourmis: de Darwin aux supergènes (Conférence publique, UNIL) Westschweiz 2015
Referate/Veranstaltungen/Ausstellungen (Sciences) au carré, UNIL Westschweiz 2014
Referate/Veranstaltungen/Ausstellungen Les Mystères de l'UNIL Westschweiz 2014
Medienarbeit: Radio, Fernsehen RTS CQFD (14.10.2014) Liens familiaux: de la fourmi à l’homme RTS Westschweiz 2014
Medienarbeit: Radio, Fernsehen RTS, émission CQFD (20.2.2014) Des fourmis au pied marin RTS Westschweiz 2014

Verbundene Projekte

Nummer Titel Start Förderungsinstrument
173189 Supergene control of social organization in the Alpine silver ant 01.11.2017 Projektförderung (Abt. I-III)
173189 Supergene control of social organization in the Alpine silver ant 01.11.2017 Projektförderung (Abt. I-III)
125306 Social evolution and collective defences against parasites in ants 01.01.2010 Projektförderung (Abt. I-III)

Abstract

Organisms vary greatly in social organization, which impacts the distribution of genetic diversity at multiple levels of biological organization and has profound implications for social evolution theory. However, the genomic and ecological correlates of variation in social organization are still largely unknown. In ants, the transition from monogyny (one queen per colony) to polygyny (multiple queens per colony) may be controlled by genetic factors and/or environmental factors generating phenotypic plasticity. Moreover, gene flow and ecological selective pressures are likely to differ between the monogynous and polygynous social forms. We propose to study the genomic architecture and ecological factors maintaining diversity in social organization in the ant Formica selysi. We will use an ultra high throughput genotyping-by-sequencing approach (GBS; also called double-digest RAD sequencing) to characterize genome-wide patterns of genetic differentiation among individuals belonging to each social form and sampled across 20 populations. The populations will be selected along altitudinal gradients, and will thus vary in ecological parameters that may influence social organization, like temperature, pluviometry, season length, resource availability and habitat stability. The GBS approach will provide thousands of SNPs distributed throughout the genome, which will allow us to investigate patterns of genetic differentiation among individuals, colonies, populations and social forms with unprecedented power, both genome-wide and at individual SNPs that may be associated with traits of interest. We have three main goals. (1) First, we will assess how variation in social organization affects the distribution of genetic diversity. We will infer patterns of gene flow within and among populations and social forms, thereby testing if the social forms differ in dispersal and colonization ability, as is generally predicted by social evolution theory. (2) Second, we will seek ecological factors that appear to favour one social form or the other, by examining how environmental variables co-vary with social organization across low and high altitude populations. (3) Third, we will investigate the genomic architecture underlying socially or ecologically important traits, by searching for markers or genomic regions that are associated with social forms or environmental variables, or show signs of positive selection. This integrative approach will shed light on the genomic architecture and ecological factors that jointly influence social organization in ants, thus providing new perspectives on social evolution in hierarchically structured populations.
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