Javier Montero-Pau
Long-term coexistence of rotifer cryptic species
Montero-Pau, Javier; Ramos-Rodríguez, Eloisa; Serra, Manuel; Gómez, Africa
Authors
Contributors
Dirk Steinke
Editor
Abstract
Despite their high morphological similarity, cryptic species often coexist in aquatic habitats presenting a challenge in the framework of niche differentiation theory and coexistence mechanisms. Here we use a rotifer species complex inhabiting highly unpredictable and fluctuating salt lakes to gain insights into the mechanisms involved in stable coexistence in cryptic species. We combined molecular barcoding surveys of planktonic populations and paleogenetic analysis of diapausing eggs to reconstruct the current and historical coexistence dynamics of two highly morphologically similar rotifer species, B. plicatilis and B. manjavacas. In addition, we carried out laboratory experiments using clones isolated from eight lakes where both species coexist to explore their clonal growth responses to salinity, a challenging, highly variable and unpredictable condition in Mediterranean salt lakes. We show that both species have co-occurred in a stable way in one lake, with population fluctuations in which no species was permanently excluded. The seasonal occurrence patterns of the plankton in two lakes agree with laboratory experiments showing that both species differ in their optimal salinity. These results suggest that stable species coexistence is mediated by differential responses to salinity and its fluctuating regime. We discuss the role of fluctuating salinity and a persistent diapausing egg banks as a mechanism for species coexistence in accordance with the 'storage effect'.
Citation
Montero-Pau, J., Ramos-Rodríguez, E., Serra, M., & Gómez, A. (2011). Long-term coexistence of rotifer cryptic species. PLoS ONE, 6(6), Article ARTN e21530. https://doi.org/10.1371/journal.pone.0021530
Journal Article Type | Article |
---|---|
Acceptance Date | May 31, 2011 |
Online Publication Date | Jun 28, 2011 |
Publication Date | May 28, 2011 |
Deposit Date | Nov 13, 2014 |
Publicly Available Date | Nov 13, 2014 |
Journal | PLoS ONE |
Print ISSN | 1932-6203 |
Publisher | Public Library of Science |
Peer Reviewed | Peer Reviewed |
Volume | 6 |
Issue | 6 |
Article Number | ARTN e21530 |
DOI | https://doi.org/10.1371/journal.pone.0021530 |
Keywords | Diapausing egg banks, Brachionus plicatilis, Morphological stasis, Resource competition, Iberian Peninsula, Species complex, Rotifera, Central Spain, Speciation, DNA |
Public URL | https://hull-repository.worktribe.com/output/462442 |
Publisher URL | http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0021530 |
Additional Information | Copy of article first published in PLoS ONE, 2011, v.6, issue 6 |
Contract Date | Nov 13, 2014 |
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Copyright Statement
© 2011 Montero-Pau et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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