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Population genetic structure and temporal stability at the northern range boundary of the Greenside Darter (Etheostoma blennioides ).
| Content Provider | Semantic Scholar |
|---|---|
| Author | Beneteau, Courtney L. |
| Copyright Year | 2007 |
| Abstract | The greenside darter occurs in four major tributaries in Canada, which represent the northern boundary of the species distribution. This system provides the opportunity to observe population and temporal dynamics at the range-cdge of a species through connectivity and gene flow estimation among, and within-watersheds. To address these questions, I developed novel microsatellite DNA markers for the species. Using these markers, I found very little among-watershed migration, and identified the Ausable watershed as isolated and having reduced genetic diversity relative to the other watersheds, likely due to bottleneck effects. I found significant levels of temporal variation over a single year. The dramatic population abundance increase and distribution expansion in the Grand River greenside darter populations are hypothesized to be the result of multiple introductions based on high genetic diversity and anomalous population structure. This work demonstrates how genetic data provides unique insights into poorly understood population and conservation biology issues. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://scholar.uwindsor.ca/cgi/viewcontent.cgi?article=8011&context=etd |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
