Evolutionary Biology & Ecologyebe-Welcome.html
ebe homeebe-Welcome.html
 
PhD student, FNRS Research Fellow

phone: +32 (0)2 650 22 67

e-mail: hugo.darras@ulb.ac.be










Research interests



PhD research project

Social hybridogenesis in clonal ants of the Cataglyphis altisquamis group

Supervisor: Serge Aron


With a few rare exceptions, the vast majority of animals reproduce sexually. Some species have, however, evolved alternative modes of reproduction by shifting from classical bisexuality to unorthodox reproductive systems, like parthenogenesis, gynogenesis, or hybridogenesis. Under classical hybridogenesis, females of hybrid origin discard their paternal genome prior to meiosis and produce gametes carrying no paternally derived genes. Therefore, both the maternal and paternal genomes are expressed in their somatic tissues, while their germ line is purely maternal. Recently, we discovered a case of hybridogenesis at a social level in desert ant species of the Cataglyphis altisquamis group. Populations of these species consist of two interdependent and genetically distinct lineages. Queens mate exclusively with males from the alternative genetic lineage of their own and produce hybrid workers from the crossing of the two lineages. By contrast, males and new queens are produced asexually through parthenogenesis. As a consequence, only maternal genes are perpetuated across generations. This research project aims at studying the ultimate causes and proxies that shape social hybridogenesis in Cataglyphis ants.




Publications



Darras H, Aron S (2015) Introgression of mitochondrial DNA among lineages in a hybridogenetic ant. Biology Letters 11.

Darras H, Kuhn A, Aron S (2014) Genetic determination of female castes in a hybridogenetic desert ant. Journal of Evolutionary Biology 27, 2265–2271.

Darras H, Leniaud L, Aron S (2014) Large-scale distribution of hybridogenetic lineages in a Spanish desert ant. Proceedings of the Royal Society B 281, 2013.2396.

Eyer P-A, Leniaud L, Darras H, Aron S (2013) Hybridogenesis through thelytokous parthenogenesis in two Cataglyphis desert ants. Molecular Ecology 22, 947-955.

Leniaud L, Darras H, Boulay R, Aron S (2012) Social hybridogenesis in the clonal ant Cataglyphis hispanica. Current Biology 22, 1188-1193.




Communications



Darras H, Aron S (2014) Evolution of social hybridogenesis in Cataglyphis desert ants. XVII Congress of the IUSSI, Cairns.

Darras H, Leniaud L, Eyer P-A, Kuhn A, Aron S (2013) Social hybridogenesis in clonal ants of the Cataglyphis altisquamis group. Conférence Jacques- Monod, Recent Advances on the Evolution of Sex and Genetic Systems, Roscoff.

Darras H, Leniaud L, Eyer P-A, Aron S (2012) Social hybridogenesis in clonal ants of the Cataglyphis altisquamis group. 19th Benelux Congress of Zoology, Brussels.

Eyer P-A, Leniaud L, Darras H, Aron S (2012) Hybridogenesis through thelytokous parthenogenesis in two Cataglyphis desert ants. 5th European Meeting of the IUSSI. Montecatini Terme.

Aron S, Darras H, Leniaud L (2010) Extraordinary reproductive strategies in the ant Cataglyphis. XVI International Congress of the IUSSI, Copenhagen.

Leniaud L, Darras H, Aron S (2010) Comparative analysis and evolution of unusual mating systems in the ant genus Cataglyphis. XVI International Congress of the IUSSI, Copenhagen.




Educational background



  1. PhD in Evolutionary Biology (2011- today, Université Libre de Bruxelles, Belgium)

  2. Master of Science in Ecology, Biodiversity and Evolution (2011, AgroParisTech, France)

  3. Master of Engineering in Life sciences (2007-2011, AgroParisTech, France)







Webmaster  -  Copyright ebe 2016

 
  1. Hugo Darras

UNIVERSITE LIBRE DE BRUXELLEShttp://www.ulb.ac.be/
WELCOMEebe-Welcome.htmlebe-Welcome.htmlshapeimage_11_link_0
RESEARCHResearch.htmlResearch.htmlshapeimage_12_link_0
TEACHINGTeaching.htmlTeaching.htmlshapeimage_13_link_0
PEOPLEPeople.htmlPeople.htmlshapeimage_14_link_0
PUBLICATIONSPublications.htmlPublications.htmlshapeimage_15_link_0
SOFTWARESoftware.htmlSoftware.htmlshapeimage_16_link_0