Title:	Phylogeography of three snubnose darters (Percidae: subgenus Ulocentra) endemic to the southeastern U.S
Author(s):	Powers, Steven L.; Warren, Melvin L
Date:	2009
Source:	Copeia 2009:526-531.
Station ID:	JRNL--
Description:	The Yazoo Darter, Etheostoma raneyi (Percidae: subgenus Ulocentra), is a narrowly restricted endemic occurring in small tributaries in the Loessial Hills of the upper Yazoo River basin in northern Mississippi. The range of the species is shared between the Little Tallahatchie and adjacent upper Yocona rivers, but populations in the two rivers are separated by unsuitable habitat in the Mississippi Alluvial Plain. The Chickasaw Darter, Etheostoma cervus, and Firebelly Darter, E. pyrrhogaster, show analogous distributions in the Forked Deer and Obion rivers, respectively, of western Tennessee and Kentucky. Phylogenetic analyses of cyt b and control region mtDNA (1497 sites) data from E. raneyi (n = 12), E. cervus (n = 4), and E. pyrrhogaster (n = 5) recovered two clades of E. raneyi with high bootstrap and decay support that are congruent with localities of specimens from the Little Tallahatchie and Yocona drainages, respectively. Divergence between the clades of E. raneyi was 1.3% (SE = 0.3%). Within drainage divergence was 0.3% (SE = 0.1%) for the Little Tallahatchie clade and 0.1% (SE < 0.1%) for the Yocona clade. Etheostoma cervus and E. pyrrhogaster showed interspecific divergence of 1.3% (SE = 0.2%) and intraspecific divergence of 0.7% (SE = 0.2%) and 0.8% (SE = 0.2%), respectively. These results suggest isolation by vicariance as a mode of speciation in fishes restricted to the Upper Coastal Plain. Conservation action may be in order for E. raneyi as populations from the Little Tallahatchie and Yocona rivers should be treated as separate management units with the latter known from only five small streams, some of which are threatened by encroaching development.
	View and Print this Publication (1.15 MB)
Publication Notes:	We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information. This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain. Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS Webmaster, srswebmaster@fs.fed.us if you notice any errors which make this publication unuseable. You may send email to pubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)
	Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility