Accessibility navigation


Transient microgeographic clines during B chromosome invasion

Camacho, J. P. M., Shaw, M., Cabrero, J., Bakkali, M., Ruíz-Estévez, M., Ruíz-Ruano, F. J., Martín-Blázquez,, R. and López-León, M. D. (2015) Transient microgeographic clines during B chromosome invasion. The American Naturalist, 186 (5). pp. 675-681. ISSN 0003-0147

[img] Text - Accepted Version
· Restricted to Repository staff only

578kB

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1086/683172

Abstract/Summary

The near-neutral model of B chromosome evolution predicts that the invasion of a new population should last some tens of generations, but the details on how it proceeds in real populations are mostly unknown. Trying to fill this gap, we analyze here a natural population of the grasshopper Eyprepocnemis plorans at three time points during the last 35 years. Our results show that B chromosome frequency increased significantly during this period, and that a cline observed in 1992 had disappeared in 2012 once B frequency reached an upper limit in all sites sampled. This indicates that, during B chromosome invasion, at microgeographic scale, transient clines for B frequency are formed at the invasion front. Computer simulation experiments showed that the pattern of change observed for genotypic frequencies is consistent with the existence of B chromosome drive through females and selection against individuals with high number of B chromosomes.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Agriculture, Policy and Development > Biodiversity, Crops and Agroecosystems Division > Crops Research Group
ID Code:42189
Uncontrolled Keywords:Red Queen Co-evolution Supplementary chromosomes B Chromosomes selfish genetic element
Publisher:The American Society of Naturalists

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation