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dc.contributor.authorRuggeri, Paolo
dc.contributor.authorPasternak, E
dc.contributor.authorOkamura, B
dc.date.accessioned2020-04-29T11:21:05Z
dc.date.available2020-04-29T11:21:05Z
dc.date.issued2019-10-18
dc.date.submitted2020-04-03
dc.identifier.citationRuggeri, P, Pasternak, E, Okamura, B. To remain or leave: Dispersal variation and its genetic consequences in benthic freshwater invertebrates. Ecol Evol. 2019; 9: 12069– 12088. https://doi.org/10.1002/ece3.5656en_US
dc.identifier.issn2045-7758
dc.identifier.doi10.1002/ece3.5656
dc.identifier.urihttp://hdl.handle.net/10141/622723
dc.description.abstractVariation in dispersal capacity may influence population genetic variation and relatedness of freshwater animals thus demonstrating how life‐history traits influence patterns and processes that in turn influence biodiversity. The majority of studies have focused on the consequences of dispersal variation in taxa inhabiting riverine systems whose dendritic nature and upstream/downstream gradients facilitate characterizing populations along networks. We undertook extensive, large‐scale investigations of the impacts of hydrological connectivity on population genetic variation in two freshwater bryozoan species whose dispersive propagules (statoblasts) are either attached to surfaces (Fredericella sultana) or are released as buoyant stages (Cristatella mucedo) and that live primarily in either lotic (F. sultana) or lentic environments (C. mucedo). Describing population genetic structure in multiple sites characterized by varying degrees of hydrological connectivity within each of three (or four) UK regions enabled us to test the following hypotheses: (1) genetic diversity and gene flow will be more influenced by hydrological connectivity in populations of C. mucedo (because F. sultana dispersal stages are retained); (2) populations of F. sultana will be characterized by greater genetic divergence than those of C. mucedo (reflecting their relative dispersal capacities); and (3) genetic variation will be greatest in F. sultana (reflecting a propensity for genetic divergence as a result of its low dispersal potential). We found that hydrological connectivity enhanced genetic diversity and gene flow among C. mucedo populations but not in F. sultana while higher overall measures of clonal diversity and greater genetic divergence characterized populations of F. sultana. We suggest that genetic divergence over time within F. sultana populations reflects a general constraint of releasing propagules that might eventually be swept to sea when taxa inhabit running waters. In contrast, taxa that primarily inhabit lakes and ponds may colonize across hydrologically connected regions, establishing genetically related populations. Our study contributes more nuanced views about drivers of population genetic structures in passively dispersing freshwater invertebrates as outlined by the Monopolization Hypothesis (Acta Oecologica, 23, 2002, 121) by highlighting how a range of demographic and evolutionary processes reflect life‐history attributes of benthic colonial invertebrates (bryozoans) and cyclically parthenogenetic zooplankton. In addition, growing evidence that genetic divergence may commonly characterize populations of diverse groups of riverine taxa suggests that organisms inhabiting lotic systems may be particularly challenged by environmental change. Such change may predispose riverine populations to extinction as a result of genetic divergence combined with limited dispersal and gene flow.en_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.rightsopenAccessen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleTo remain or leave: Dispersal variation and its genetic consequences in benthic freshwater invertebratesen_US
dc.typeJournal Articleen_US
dc.identifier.eissn2045-7758
dc.identifier.journalEcology and Evolutionen_US
dc.identifier.volume9en_US
dc.identifier.issue21en_US
dc.identifier.startpage12069 - 12088en_US
pubs.organisational-group/Natural History Museum
pubs.organisational-group/Natural History Museum/Science Group
pubs.organisational-group/Natural History Museum/Science Group/Functional groups
pubs.organisational-group/Natural History Museum/Science Group/Functional groups/Research
pubs.organisational-group/Natural History Museum/Science Group/Functional groups/Research/LS Research
pubs.organisational-group/Natural History Museum/Science Group/Life Sciences
dc.embargoNot knownen_US
elements.import.authorRuggeri, Pen_US
elements.import.authorPasternak, Een_US
elements.import.authorOkamura, Ben_US
dc.description.nhm© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. The attached file is the published pdf.en_US
dc.description.nhmNHM Repository
dc.subject.nhmCristatella mucedoen_US
dc.subject.nhmdispersal abilityen_US
dc.subject.nhmFredericella sultanaen_US
dc.subject.nhmgene flowen_US
dc.subject.nhmhydrological connectivityen_US
dc.subject.nhmstatoblastsen_US
refterms.dateFOA2020-04-29T11:21:06Z


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