Quantifying the spatiotemporal dynamics in a chorus frog (Pseudacris) hybrid zone over 30 years
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Engebretsen, Kristin N; Barrow, Lisa N; Rittmeyer, Eric N; Brown, Jeremy M; Moriarty Lemmon, Emily
Description
Although theory suggests that hybrid zones can move or change structure over time, studies supported by direct empirical evidence for these changes are relatively limited. We present a spatiotemporal genetic study of a hybrid zone between Pseudacris nigrita and P. fouquettei across the Pearl River between Louisiana and Mississippi. This hybrid zone was initially characterized in 1980 as a narrow and steep "tension zone," in which hybrid populations were inferior to parentals and were maintained...[Show more]
dc.contributor.author | Engebretsen, Kristin N | |
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dc.contributor.author | Barrow, Lisa N | |
dc.contributor.author | Rittmeyer, Eric N | |
dc.contributor.author | Brown, Jeremy M | |
dc.contributor.author | Moriarty Lemmon, Emily | |
dc.date.accessioned | 2016-09-19T23:50:35Z | |
dc.date.available | 2016-09-19T23:50:35Z | |
dc.identifier.uri | http://hdl.handle.net/1885/108915 | |
dc.description.abstract | Although theory suggests that hybrid zones can move or change structure over time, studies supported by direct empirical evidence for these changes are relatively limited. We present a spatiotemporal genetic study of a hybrid zone between Pseudacris nigrita and P. fouquettei across the Pearl River between Louisiana and Mississippi. This hybrid zone was initially characterized in 1980 as a narrow and steep "tension zone," in which hybrid populations were inferior to parentals and were maintained through a balance between selection and dispersal. We reanalyzed historical tissue samples and compared them to samples of recently collected individuals using microsatellites. Clinal analyses indicate that the cline has not shifted in roughly 30 years but has widened significantly. Anthropogenic and natural changes may have affected selective pressure or dispersal, and our results suggest that the zone may no longer best be described as a tension zone. To the best of our knowledge, this study provides the first evidence of significant widening of a hybrid cline but stasis of its center. Continued empirical study of dynamic hybrid zones will provide insight into the forces shaping their structure and the evolutionary potential they possess for the elimination or generation of species. | |
dc.description.sponsorship | This research was supported by DEB-1120516 to E. Moriarty Lemmon and start-up funds from the Louisiana State University College of Science and Department of Biological Sciences to J. M. Brown. | |
dc.format | 19 pages | |
dc.publisher | Wiley Open Access | |
dc.rights | http://www.sherpa.ac.uk/romeo/issn/2045-7758/ Author can archive publisher's version/PDF (Sherpa/Romeo as of 20/9/2016) | |
dc.source | Ecology and evolution | |
dc.subject | allozyme | |
dc.subject | pearl river | |
dc.subject | hybrid cline | |
dc.subject | hybridization | |
dc.subject | microsatellite | |
dc.title | Quantifying the spatiotemporal dynamics in a chorus frog (Pseudacris) hybrid zone over 30 years | |
dc.type | Journal article | |
local.identifier.citationvolume | 6 | |
dcterms.dateAccepted | 2016-05-16 | |
dc.date.issued | 2016-07 | |
local.publisher.url | http://www.wileyopenaccess.com/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Rittmeyer, Eric N., Division of Evolution, Ecology & Genetics, CMBE Research School of Biology, The Australian National University | |
local.identifier.essn | 2045-7758 | |
local.bibliographicCitation.issue | 14 | |
local.bibliographicCitation.startpage | 5013 | |
local.bibliographicCitation.lastpage | 5031 | |
local.identifier.doi | 10.1002/ece3.2232 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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