Annuaire
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Personnel de recherche

M. Christophe Lucas

CNRS Research Scientist Manager of the chemical ecology platform

Coordonnées

Parc de Grandmont 37200 TOURS

Grandmont bâtiment I étage 1 bureau 1350

Tél
0247367372
Mail
christophe.lucas@univ-tours.fr
Site internet
https://www.researchgate.net/profile/Christophe_Lucas

Discipline(s)

Biologie des organismes, Biologie des populations et écologie

Discipline(s) enseignée(s)

Chemical communication in insects

Thèmes de recherche

Research fields: Chemical ecology, behavioral ecology, behavioral genetics, adaptation

Keywords: Chemical communication, genetic expression, behavior, polyethism, polyphenism, foraging gene, social conflict, reproduction, insect societies, invasive species.

Biological models: Social insects (termite, ant, wasp), earwig, drosophila, nasonia.

 

Research projects

My main research projects are to understand complex behaviors of insects and particularly of social insects. How environmental factors are pursued, analyzed and which behavioral responses are influenced? But also, how intra- and interspecific interactions could modify behaviors by changing gene expression? By using tools from chemical ecology and behavioral genetics, my own researches focus on social interactions and their adaptive impacts. So, my studies are based on insect behaviors (recognition, aggressiveness, foraging, parental care, sexual courtship) through the study of chemical communications and gene expression.

Pheidole pallidula hunting

Behaviors and genes expression are under several abiotic and biotic environmental factors which also include social environment. Chemical communication plays an important role in inter-individual interaction in insects and codifies part of the environmental and social information. To unravel communication mechanisms of insects and their evolutions, it is of primary importance to decrypt such chemical information. In more details, I explore questions on behavioral plasticity of insects and in particular in social insects: What are the chemical signals and the genes involved? How environmental factors play a role? What are the consequences of the different reproductives/castes on social organization in insect societies? How such systems are maintained and evolved?

In social insects, the caste system allow the main factor influencing behavioral plasticity is the caste system which is linked to social organization and raised several questions

R. flavipes in woods

Species studied

To answers such questions, I study several insect models like termites, ants, earwigs, wasps (solitary and social) and drosophila. They all presents specificity and possess different advantages for my researches. Social insects like termites and ants are organized in complex societies with several social interactions. Nevertheless, eusociality (true sociality) appeared independently in Isopteran (termites) and Hymenopteran (ants, bees and wasps) which gives to termites unique specificities. Concerning drosophila, it is the most studied insect model and its genome is known since a long time, which allow to dissect in details the genetic pathways of its communication system.

Pheidole pallidula soldiers and workers

Main methods

- Chemical analyze and identification: gas chromatography (GC), mass spectrometry (GC-MS/GC-TQ), thin layer chromatography (TLC), liquid chromatography (HPLC), chemical extraction (SPME, SBSE, SHS, DHS, DMDS)
- Genetic expression: quantitative RT-PCR, in situ, RNA interference
- Experimental behavior: video-tracking, cross-linked reproduction, cross-fostering

Termite biblio

Liens

Union Internationale pour l'Etude des Insectes Sociaux - Section Française
GDR d'écologie chimique
Canadian TV news on "foraging behaviour of Pheidole pallidula"

Activités / CV

Full CV (PDF in French)

Oct. 2010- CNRS Research Scientist (section 29)
University of Tours, France

2010 FNS Senio researcher
University of Lausanne, Suisse
Behavioral genetics in the ant Solenopsis invicta

2007-09 First assistant
University of Lausanne, Suisse (Supervisor: Laurent Keller)
Social structure and genetic expression in the ant Solenopsis invicta

2003-06 Post-doctoral researcher
University of Toronto, Canada (Supervisor: Marla B. Sokolowski)
Molecular mecanisms of the plasticity of social behaviors in the ant Pheidole pallidula

1998-2002 Doctorat ès sciences
University of Paris-Sud (Directors: Jean-Marc Jallon & Dominique Fresneau)
Chemical and behavioral bases of the recognition system in the ponerine ants (Pachycondyla)

Corps

Chargé de recherche CNRS

Informations complémentaires

Publications (short list)

(Full citations record can be found here)

Brossette L, Meunier J, Dupont S, Bagnères AG, Lucas C (2019)
Unbalanced biparental care during colony foundation in two subterranean termites
Ecology and Evolution 9 (1): 192-200

Lucas C, Brossette L, Lefloch L, Dupont S, Christidès JP, Bagnères AG (2018)
When predator odour makes groups stronger: effects on behavioral and chemical adaptations in two termite species
Entomological Ecology 43 (4): 513-524

Brossette L, Bagnères AG, Millot A, Blanchard S, Dupont S, Lucas C (2017)
Termites’ royal cradle: Does foundation success vary between two subterranean species?
Insectes Sociaux 64 (4): 515-523

Csata E*, Timuș N*, Witek M*, Casacci LP*, Lucas C, Bagnères AG, Sztencel-Jabłonka A, Barbero F, Bonelli S, Rákosy L, Markó B (2017)
Lock-picks: fungal infection facilitates the intrusion of strangers into ant colonies
Scientific Reports 7: 46323

Baudino S, Lucas C, Smadja C (2016)
Omics in chemical ecology, In: Chemical Ecology
Collective Eds. ISTE-Willey, ISBN: 978-1-84821-924-3, 117-137

Lucas C, Nicolas M, Keller L (2015)
Expression of foraging and Gp-9 are associated with social organization in the fire ant Solenopsis invicta
Insect Molecular Biology 24 (1): 93-104

Manfredini F, Lucas C, Nicolas M, Keller L, Shoemaker DW, Grozinger C (2014)
Molecular and social regulation of worker division of labor in fire ants
Molecular Ecology 23 (3): 660-672

Wong JWY*, Meunier J*, Lucas C, Kölliker M (2014)
Paternal signature in kin recognition cues of a social insect: Concealed in juveniles, revealed in adults
Proceedings of the Royal Society of London B: biological Sciences

Meunier J, Delémont O, Lucas C (2011)
Recognition in ants: social origin matters
PLoS ONE 6 (5): e19347

Lucas C, Sokolowski MB (2009)
Molecular basis for changes in behavioral state in ant social behaviors
Proceedings of the National Academy of Sciences 106 (15), 6351-6356

Krupp J, Kent C, Billeter JC, So T, Azanchi R, Smith BP, Schonfeld JA, Lucas C, Levine JD (2008)
Social experience modifies pheromone expression and mating behavior in male Drosophila melanogaster
Current Biology 18 (18), 1373-1383