Population structure and gene flow among anadromous arctic lamprey (Lethenteron camtschaticum) populations deduced from polymorphic microsatellite loci

Yuji Yamazaki*, Ryota Yokoyama, Terumi Nagai, Akira Goto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Information on migration ecology is important for effective conservation and management of fishery resources, particularly diadromous animals. We investigated the genetic population structure and gene flow pattern of anadromous Arctic lamprey Lethenteron camtschaticum by analyzing polymorphic microsatellite loci. Bayesian population structure analysis was used to estimate the existence of two genetically divergent ancestral sources and latitudinal gradual changes of their frequencies among the present populations. When hypotheses of historical migration models were tested using coalescent-based methods, the best model was found to be an n-island model assuming equal population size and reciprocal migration among all populations. These results suggest that L. camtschaticum has considerable ability to migrate long distances in the sea and has lower homing abilities. For resource management of L. camtschaticum, unconstrained gene flow across all populations should be maintained. The present findings might be beneficial for conservation and contribute the sustainable use of L. camtschaticum resource.

Original languageEnglish
Pages (from-to)43-52
Number of pages10
JournalEnvironmental Biology of Fishes
Volume97
Issue number1
DOIs
StatePublished - 2014/01

Keywords

  • Lamprey
  • Migration
  • N-island model
  • Population connectivity
  • Resource management

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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