Abstracts (first author)

Poster 

Sexual conflict predicts the evolution of sexual dimorphism in a diverse avian family, the Penduline tits (Remizidae)

PDF

Author(s): Ball A, Van Dijk RE, Dorus S, Székely T

Summary:

Sexual selection is a potent evolutionary force that can cause the rapid diversification of morphological and behavioural traits. The Penduline tits (Remizidae) are a small passerine family distributed throughout Eurasia, Africa and North America which employ a diverse array of reproductive strategies. The European species (Remiz pendulinus) is highly promiscuous, with both males and females having up to 6 sequential mates in a single season. The pursuit of additional mating opportunities results in uni-parental care due to male and female nest desertion and, surprisingly common bi-parental desertion (up to 30%). The considerable variation in parental care conflict across this family led us to produce the first molecular phylogeny of the Remizidae family (13 species) so that the relationship between sexual dimorphism evolution and sexual conflict could be explored. As predicted by sexual selection theory we find that increased levels of conflict over care are associated with sexually dimorphic plumage traits. The relationship between parental investment and sexual selection is a key piller of sexual selection theory but the empirical examples of this in such closely related species are rare. To ascertain the drivers of this relationship is a key objective within evolutionary biology.



Contacts

Chairman: Octávio S. Paulo
Tel: 00 351 217500614 direct
Tel: 00 351 217500000 ext22359
Fax: 00 351 217500028
email: mail@eseb2013.com

Address

XIV Congress of the European Society for Evolutionary Biology

Organization Team
Department of Animal Biology (DBA)
Faculty of Sciences of the University of Lisbon
P-1749-016 Lisbon
Portugal

Website

Computational Biology & Population Genomics Group 
Close