Social evolution; Parasites; Population genetics; Behaviour; Entomopathogenic fungi; Ants; Social insects; fungi; social behaviour; evolution
Purcell Jessica, Avril Amaury, Jaffuel Geoffrey, Bates Sarah, Chapuisat Michel (2014), Ant brood function as life preservers during floods, in PLoS ONE
, 9, e89211.
Rasmann Sergio, Buri Aline, Gallot-Lavallee Marie, Joaquim Jessica, Purcell Jessica, Pellissier Loic (2014), Differential allocation and deployment of direct and indirect defences by Vicia sepium along elevation gradients, in JOURNAL OF ECOLOGY
, 102(4), 930-938.
Brand N., Chapuisat M. (2014), Impact of helpers on colony productivity in a primitively eusocial bee, in Behavioral Ecology and Sociobiology
, 68, 291-298.
Chapuisat Michel (2014), Smells like queen since the Cretaceous, in Science
, 343(6168), 254-255.
Bruetsch Timothee, Chapuisat Michel (2014), Wood ants protect their brood with tree resin, in ANIMAL BEHAVIOUR
, 93, 157-161.
Purcell J., Chapuisat M. (2013), Bidirectional shifts in colony queen number in a socially polymorphic ant population, in Evolution
, 67, 1169-1180.
Reymond A., Purcell J., Cherix D., Guisan A., Pellissier L. (2013), Functional diversity decreases with temperature in high elevation ant fauna, in Ecological Entomology
, 38, 364-373.
Tragust S., Ugelvig L. V., Chapuisat M., Heinze J., Cremer S. (2013), Pupal cocoons affect sanitary brood care and limit fungal infections in ant colonies, in BMC Evolutionary Biology
, 13, 225.
Brand Nayuta, Chapuisat Michel (2012), Born to be bee, fed to be worker? The caste system of a primitively eusocial insect, in Frontiers in Zoology
, 9, 35.
Purcell Jessica, Brelsford Alan, Avilés Leticia (2012), Co-evolution between sociality and dispersal: The role of synergistic cooperative benefits, in Journal of Theoretical Biology
, 312(0), 44-54.
Reber A., Chapuisat M. (2012), Diversity, prevalence and virulence of fungal entomopathogens in colonies of the ant, in Insectes Sociaux
, 59, 231-239.
Purcell J., Brütsch T., Chapuisat M. (2012), Effects of the social environment on the survival and fungal resistance of ant brood, in Behavioral Ecology and Sociobiology
, 66, 467-474.
Reber A., Chapuisat M. (2012), No evidence for immune priming in ants exposed to a fungal pathogen, in Plos One
, 7(e35372), 1-6.
Purcell J., Vasconcellos-Neto J., Gonzaga M. O., Fletcher J. A., Aviles L. (2012), Spatio-Temporal Differentiation and Sociality in Spiders, in Plos One
, 7(e34592), 1-11.
Aviles L., Purcell Jessica (2012), The evolution of inbred social systems in spiders and other organisms: from short-term gains to long-term evolutionary dead ends?, in Advances in the Study of Behavior
, Volume 44, 99-133.
Purcell J., Chapuisat M. (2012), The influence of social structure on brood survival and development in a socially polymorphic ant: insights from a cross-fostering experiment, in Journal of Evolutionary Biology
, 25, 2288-2297.
Reber A., Meunier J., Chapuisat M. (2011), Flexible colony-founding strategies in a socially polymorphic ant, in Animal Behaviour
, 79(2), 467-472.
Purcell J. (2011), Geographic patterns in the distribution of social systems in terrestrial arthropods, in Biological Reviews
, 86(2), 475-491.
Abbot P. and 136 other authors including Chapuisat M. (2011), Inclusive fitness theory and eusociality, in Nature
, 471(7339), E1-E4.
Meunier J., Reber A., Chapuisat M. (2011), Queen acceptance in a socially polymorphic ant, in Animal Behaviour
, 81(1), 163-168.
Reber A., Purcell J., Buechel S. D., Buri P., Chapuisat M. (2011), The expression and impact of antifungal grooming in ants, in Journal of Evolutionary Biology
, 24(5), 954-964.
Castella G., Christe P., Chapuisat M. (2010), Covariation between colony social structure and immune defences of workers in the ant, in Insectes Sociaux
, 57(2), 233-238.
Keller L., Chapuisat M. (2010), Eusociality and cooperation, in Hildegard Kehrer-Sawatzki (ed.), John Wiley & Sons, Ltd, Chichester, 1-9.
Chapuisat M. (2010), Evolution: Plastic sociality in a sweat bee, in Current Biology
, 20(22), R977-R979.
Meunier J., Delaplace L., Chapuisat M. (2010), Reproductive conflicts and egg discrimination in a socially polymorphic ant, in Behavioral Ecology and Sociobiology
, 64(10), 1655-1663.
Chapuisat M. (2010), Social evolution: Sick ants face death alone, in Current Biology
, 20(3), R104-R105.
Brütsch Timothée, Felden Antoine, Reber Anabelle, Chapuisat Michel, Ant queens (Hymenoptera: Formicidae) are attracted to fungal pathogens during the initial stage of colony founding, in Myrmecological News
Purcell J., Brütsch T., Chapuisat M., Effects of the social environment on the survival and fungal resistance of ant brood, in Behavioral Ecology and Sociobiology
Galvez Dumas, Chapuisat Michel, Immune priming and pathogen resistance in ant queens, in Ecology and Evolution
Keller L., Chapuisat M., The evolution of eusociality, in Jonathan B. Losos (ed.), Princeton University Press, Princeton.
Social groups are vulnerable to parasites, because frequent social contacts and high genetic relatedness facilitate the spread and adaptation of parasites within groups. Hence, parasites can affect the evolution and organization of social groups, and may in particular select for more genetically diverse groups. Conversely, social life permits the evolution of collective behavioural defences and the emergence of novel group-level adaptations to resist parasites. This project focuses on the impact of entomopathogenic fungi on ant societies of various degrees of complexity and on the collective defences of ants against these fungi. We will use the socially polymorphic ant Formica selysi and its naturally occurring fungal parasites as a model system. This system is highly appropriate to study the relationship between parasites and social structure variation because single-queen colonies (with low genetic diversity) and multiple-queen colonies (with high genetic diversity) of F. selysi occur in the same population. Moreover, we have already identified three entomopathogenic fungi infecting F. selysi in nature, Metarhizium anisopliae, Beauveria bassiana and Paecilomyces lilacinus. We will combine field surveys and laboratory experiments to (1) investigate the prevalence and genetic diversity of these three entomopathogenic fungi in single- and multiple-queen colonies (2) assess the impact of M. anisopliae and B. bassiana on experimental groups of ant differing in diversity (varying genetic diversity, genotypic composition, body size distribution and past exposition to pathogens) (3) investigate the behavioural defences of ants against fungal pathogens, at both the individual and collective levels and (4) test if the exposition to fungal pathogens favours independent colony founding by multiple queens over solitary colony founding. These experiments will provide major insights into how fungal parasites and insect societies interact. In particular, they will reveal if parasites select for more diverse social groups, and shed light on novel modes of defences emerging at the group-level through collective action or social transfer of immunity. More generally, these results should contribute to a better understanding of the influence of parasites on the organisation and evolution of societies.