Data from: Time-series analysis reveals genetic responses to intensive management of razorback sucker (Xyrauchen texanus)

  • Thomas F. Turner (Contributor)
  • Thomas E. Dowling (Contributor)
  • Brian Kesner (Contributor)
  • Deborah Adams (Contributor)
  • Evan W. Carson (Contributor)
  • Melody J. Saltzgiver (Contributor)
  • Paul C. Marsh (Contributor)



Time-series analysis is used widely in ecology to study complex phenomena, and may have considerable potential to clarify relationships of genetic and demographic processes in natural and exploited populations. We explored the utility of this approach to evaluate population responses to management in razorback sucker, a long-lived and fecund, but declining freshwater fish species. A core population in Lake Mohave (Arizona-Nevada, USA) has experienced no natural recruitment for decades, and is maintained by harvesting naturally produced larvae from the lake, rearing them in protective custody, and repatriating them at sizes less vulnerable to predation. Analyses of mtDNA and 15 microsatellites characterized for sequential larval cohorts collected over a 15-year time series revealed no changes in geographic structuring, but indicated significant increase in mtDNA diversity for the entire population over time. Likewise, ratios of annual effective breeders to annual census size (Nb/Na) increased significantly despite seven-fold reduction of Na. These results indicated that conservation actions diminished near-term extinction risk due to genetic factors, and should now focus on increasing numbers of fish in Lake Mohave to ameliorate longer-term risks. More generally, time series analysis permitted robust testing of trends in genetic diversity, despite low precision of some metrics.,mtDNA haplotype sequencesDNA sequences of each of the haplotypes identified in this study. This file, in conjunction with the haplotypes, can be used to estimate population genetic parameters.razorback sucker haplotype sequences.csvIndividual mtDNA haplotypesFor each individual, the first column provides field id number (including location and date), second column provides lab id (sorted by year), and the third column identifies the haplotype.mtDNA data 1 oct 13.csvIndividual microsatellite genotypesThe first line provides the header, sample ID and locus name. Each locus is named twice, once for each allele. The following lines provides the genotypes for each individual.microsat data 1 oct 13.csv,
Date made availableMar 1 2014

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