DOI: 10.5061/dryad.1812sr2
title: Data from: Comprehensive evaluation of genetic population structure for anadromous river herring with single nucleotide polymorphism data

description: Anthropogenic activities are placing increasing pressure on many species,
 particularly those that rely on more than one ecosystem. River herring
 (alewife, Alosa pseudoharengus and blueback herring, A. aestivalis
 collectively) are anadromous fishes that reproduce in rivers and streams
 of eastern North America and migrate to the western Atlantic Ocean. Here,
 we use data from single nucleotide polymorphisms (SNPs) to provide a
 comprehensive analysis of population structure for both species of river
 herring throughout their native ranges. We sampled river herring spawning
 runs in rivers from Newfoundland to Florida, examining a total of 108
 locations, and genotyping over 8000 fish. We identified geographic
 population groupings (regional genetic groups) in each species, as well as
 significant genetic differentiation between most populations and rivers.
 Strong correlations between geographic and genetic distances (i.e.,
 isolation by distance) were found range-wide for both species, although
 the patterns were less consistent at smaller spatial scales. River herring
 are caught as bycatch in fisheries and estimating stock proportions in
 mixed fishery samples is important for management. We assessed the utility
 of the SNP datasets as reference baselines for genetic stock
 identification. Results indicated high accuracy of individual assignment
 (76–95%) to designated regional genetic groups, and some individual
 populations, as well as highly accurate estimates of mixing proportions
 for both species. This study is the first to evaluate genetic structure
 across the entire geographic range of these species and provides an
 important foundation for conservation and management planning. The SNP
 reference datasets will facilitate continued multi-lateral monitoring of
 bycatch, as well as ecological investigation to provide information about
 ocean dispersal patterns of these species.
description: Range-wide genetic
 baseline alewifeGenetic baseline for
 alewife. Provided in this file is the individual ID composed of the
 location code (indicated in Reid et al., 2018) and the individual sample
 number, followed by the single nucleotide polymorphisms (SNPs). These SNPs
 are characterized in Baetscher et al., (2017). It should be noted that
 this genetic baseline excludes the populations of Dresden Mills and Sewall
 pond as described in the materials and methods. For more information
 please contact John Carlos Garza carlos.garza@noaa.gov or Kerry Reid
 kerryreid13@gmail.comALE_ANAD_baseline_92_5517.csvRange-wide genetic baseline Blueback herringGenetic baseline for blueback herring. Provided in this file is the individual ID composed of the location code (indicated in Reid et al., 2018) and the individual sample number, followed by the single nucleotide polymorphisms (SNPs). These SNPs are characterized in Baetscher et al., (2017). It should be noted that this genetic baseline excludes the population of Dresden Mills as described in the materials and methods. For more information please contact John Carlos Garza carlos.garza@noaa.gov or Kerry Reid kerryreid13@gmail.comBBH_ANAD_baseline_95_2201.csv