HR: 1330h
AN: NB33Q-17    [Abstracts]
TI: Population genetic structure of the crayfish,Orconectes juvenilis, in central Kentucky
AU: * Ziemba, R
EM: ziemba@centre.edu
AF: Centre College, Department of Biology 600 West Walnut St., Danville, KY 40422 United States
AU: Reneer, D
EM: dvrene00@centre.edu
AF: Centre College, Department of Biology 600 West Walnut St., Danville, KY 40422 United States
AU: Buhay, J
EM: jenbuhay@hotmail.com
AF: Brigham Young University, Department of Integrative Biology 680 Widstoe Building, Provo, UT 84602 United States
AU: Crandall, K
EM: keith_crandall@byu.edu
AF: Brigham Young University, Department of Integrative Biology 680 Widstoe Building, Provo, UT 84602 United States
AB: Orconectes juvenilis is distributed throughout the Kentucky River basin and surrounding drainages. Little is known about the patterns of gene flow between populations of this species, but such information is critical for understanding patterns of diversification in the genus and in conservation planning for the group. We assessed sequence-level variation in the 16S region of mitochondrial DNA within and among fourteen populations of O. juvenilis. We also compared these data to sequences collected from two populations of O. cristavarius and one population of O. rusticus, two closely related species. The geographic distribution of haplotypes and patterns of mtDNA polymorphism are consistent with current isolation among some populations and suggest recent population growth, perhaps associated with geographic expansion. The data also suggest gene flow between morphologically divergent populations of O. juvenilis and O. cristavarius.
DE: 9350 North America
DE: 9810 New fields (not classifiable under other headings)
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly