|
|||||
|
|
Genetic transition between northern and southern populations of the estuarine isopod,Cyathura polita,and the discovery of a new species ofCyathura |
|
| Authors: | Celeste J Brown William D Burbanck Courtney T Hackney |
| Institution: | 1. Department of Genetics, University of Georgia, 30602, Athens, Georgia 2. Department of Biology, Emory University, 30322, Atlanta, Georgia 3. Department of Biological Sciences, University of North Carolina, 28403, Wilmington, North Carolina |
| Abstract: | Previous work on the genetics ofCyathura polita populations along the Atlantic coast indicated that northern and southern populations have diverged significantly. We used starch gel electrophoresis to study the transition between northern and southern populations for gene frequencies at four enzyme loci.Cyathura from three sites in the Carolinas were compared with those from representative populations in the north (Massachusetts) and south (Florida).Cyathura polita from the northern and southern populations were fixed for different alleles at three of the four loci assayed.C. polita from a population in North Carolina had the northern electromorph for two loci and were polymorphic at theEst locus for the northern and southern electromorphs, whileC. polita from a population in South Carolina had the southern electromorphs for two loci and were polymorphic at theMdh-1 locus for northern and southern electromorphs. Thus, there appears to be gene flow between the genetically differentiated populations in the north and south. One population ofCyathura from North Carolina had unique electromorphs at the four loci assayed and appears to be a new species. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |