Genomic Assessment Of An Endemic Hawaiian Surgeonfish, Acanthurus Triostegus Sandvicensis, Reveals High Levels Of Connectivity And Fine-Scale Population Structure.

Details

• Journal Title:
  Coral Reefs
• Personal Author:
  Coleman, Richard R. ; Bowen, Brian W.
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research) ; Sea Grant
• Sea Grant Program:
  HAWAU (Hawaii Sea Grant)
• Description:
  The Hawaiian Archipelago has served as a natural laboratory to assess genetic connectivity patterns across a broad spectrum of taxonomic and ecological diversity. Almost all these studies were based on a few targeted loci, but technologies now allow us to assess population structure with genomic coverage and greater resolution. Here, we provide a SNP-based analysis for an endemic surgeonfish, Acanthurus triostegus sandvicensis (manini) across the Hawaiian Archipelago and adjacent Johnston Atoll (N = 461). Based on 3649 SNPs, manini showed population structure in the main Hawaiian Islands, but genetic homogeneity across most of the northwestern extent of the archipelago (overall FST = 0.033, P < 0.001). Net migration occurred from Johnston Atoll into Hawai‘i, providing further support for Johnston Atoll being a pathway for dispersal (or colonization) into Hawai′i. These results highlight the higher efficacy of genomic sequencing to characterize fine-scale patterns of connectivity relative to a targeted loci approach and, moving forward, may invoke a reassessment of past connectivity studies in a genomics framework.
• Keywords:
  Genetics Surgeonfishes
• Source:
  Coral Reefs, Early Access
• DOI:
  https://doi.org/10.1007/s00338-022-02257-4
• Document Type:
  Journal Article
• Funding:
  Grant no. NA18OAR4170076
• Place as Subject:
  Hawaii
• Rights Information:
  CC BY
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:b63f284b38236c607faac7911255dc5f444818f5595fdccc0d1a2b99c9a00674
• Download URL:
  https://repository.library.noaa.gov/view/noaa/41641/noaa_41641_DS1.pdf
• File Type:
  [PDF - 975.48 KB ]