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Diapausing egg banks, lake size, and genetic diversity in the rotifer Brachionus plicatilis Müller (Rotifera, Monogononta)

Montero-Pau, Javier; Serra, Manuel; Gómez, Africa

Authors

Javier Montero-Pau

Manuel Serra

Abstract

Diapausing egg banks are reservoirs of ecological and genetic diversity in continental zooplankton. However, although habitat size has often been used as a proxy for population size, the relationship between the size of diapausing egg banks and genetic diversity has not been explicitly tested in zooplankton. We estimated the density and size of diapausing egg banks, habitat size and the genetic diversity of 14 populations of the rotifer Brachionus plicatilis in a endorheic basin in the SE Iberian Peninsula. The size of B. plicatilis diapausing egg banks ranged across eight orders of magnitude (from 257 to 4.9·1010 eggs). Despite the small geographical scale, populations were strongly structured genetically, but with no evidence of isolation by distance. Habitat size (lake area) was a better predictor of genetic diversity than the total diapausing egg bank size, but only for mtDNA haplotype diversity. However, as these results were driven by the strong effect of the largest lake in the database, they should be taken with caution. Our results suggest that large lakes could have a disproportionate effect on genetic diversity and that more work is needed to support the use of habitat size as a proxy of population size in rotifers.

Journal Article Type Article
Publication Date 2017-07
Journal Hydrobiologia
Print ISSN 0018-8158
Electronic ISSN 1573-5117
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 796
Issue 1
Pages 77-91
Institution Citation Montero-Pau, J., Serra, M., & Gómez, A. (2017). Diapausing egg banks, lake size, and genetic diversity in the rotifer Brachionus plicatilis Müller (Rotifera, Monogononta). Hydrobiologia, 796(1), (77-91). doi:10.1007/s10750-016-2833-4. ISSN 0018-8158
DOI https://doi.org/10.1007/s10750-016-2833-4
Keywords Genetic diversity; Zooplankton; Habitat size; Diapausing egg banks; Rotifera; Brachionus plicatilis
Publisher URL http://link.springer.com/article/10.1007/s10750-016-2833-4
Copyright Statement © The Author(s) 2016
Open Access
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Additional Information This is a copy of an open access article which has been published in: Hydrobiologia.

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Copyright Statement
© The Author(s) 2016
Open Access
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.




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