Morphologically cryptic biological species within the liverwort Frullania asagrayana.

dc.contributor.author

Ramaiya, Megan

dc.contributor.author

Johnson, Matthew G

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Shaw, Blanka

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Heinrichs, Jochen

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Hentschel, Jörn

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von Konrat, Matt

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Davison, Paul G

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Shaw, A Jonathan

dc.coverage.spatial

United States

dc.date.accessioned

2011-06-21T17:27:37Z

dc.date.issued

2010-10

dc.description.abstract

UNLABELLED: PREMISE OF THE STUDY: The Frullania tamarisci complex includes eight Holarctic liverwort species. One of these, F. asagrayana, is distributed broadly throughout eastern North America from Canada to the Gulf Coast. Preliminary genetic data suggested that the species includes two groups of populations. This study was designed to test whether the two groups are reproductively isolated biological species. • METHODS: Eighty-eight samples from across the range of F. asagrayana, plus 73 samples from one population, were genotyped for 13 microsatellite loci. Sequences for two plastid loci and nrITS were obtained from 13 accessions. Genetic data were analyzed using coalescent models and Bayesian inference. • KEY RESULTS: Frullania asagrayana is sequence-invariant at the two plastid loci and ITS2, but two clear groups were resolved by microsatellites. The two groups are largely reproductively isolated, but there is a low level of gene flow from the southern to the northern group. No gene flow was detected in the other direction. A local population was heterogeneous but displayed strong genetic structure. • CONCLUSIONS: The genetic structure of F. asagrayana in eastern North America reflects morphologically cryptic differentiation between reproductively isolated groups of populations, near-panmixis within groups, and clonal propagation at local scales. Reproductive isolation between groups that are invariant at the level of nucleotide sequences shows that caution must be exercised in making taxonomic and evolutionary inferences from reciprocal monophyly (or lack thereof) between putative species.

dc.description.version

Version of Record

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/21616804

dc.identifier

ajb.1000171

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0002-9122

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https://hdl.handle.net/10161/4196

dc.language

eng

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en_US

dc.publisher

Wiley

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Am J Bot

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10.3732/ajb.1000171

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American Journal of Botany

dc.title

Morphologically cryptic biological species within the liverwort Frullania asagrayana.

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dc.type

Journal article

duke.contributor.orcid

Shaw, Blanka|0000-0001-8442-5409

duke.date.pubdate

2010-10-0

duke.description.issue

10

duke.description.volume

97

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/21616804

pubs.begin-page

1707

pubs.end-page

1718

pubs.issue

10

pubs.organisational-group

Biology

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Duke

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Staff

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Trinity College of Arts & Sciences

pubs.publication-status

Published

pubs.volume

97

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