These authors contributed equally.
Genital divergence in sympatric sister snails
Article first published online: 19 NOV 2012
© 2012 The Authors. Journal of Evolutionary Biology © 2012 European Society For Evolutionary Biology
Journal of Evolutionary Biology
Volume 26, Issue 1, pages 210–215, January 2013
How to Cite
Hollander, J., Smadja, C. M., Butlin, R. K. and Reid, D. G. (2013), Genital divergence in sympatric sister snails. Journal of Evolutionary Biology, 26: 210–215. doi: 10.1111/jeb.12029
- Issue published online: 13 DEC 2012
- Article first published online: 19 NOV 2012
- Manuscript Revised: 24 SEP 2012
- Manuscript Accepted: 24 SEP 2012
- Manuscript Received: 27 JUL 2012
- reproductive character displacement;
A pattern of greater divergence in mating traits between sister-species pairs with overlapping ranges than between allopatric species pairs is expected if reinforcement commonly contributes to speciation. Few large-scale comparative analyses have addressed this prediction, especially for genital form. Here, we show that penial morphology follows the predicted pattern in 40 robustly identified sister-species pairs in the marine gastropod subfamily Littorininae. Further work is needed to exclude other processes that may contribute to genital divergence between sympatric species, but the clear pattern we observe strongly suggests a role for genital form in reproductive isolation in this large clade.