Stability of genetic diversity in an intertidal goby population after exposure to tsunami disturbance

Shotaro Hirase, Minoru Ikeda, Shun Hayasaka, Wataru Iwasaki, Akihiro Kijima

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Massive tsunami disturbances have potentially detrimental effects on genetic diversity and effective population size of coastal marine species, and evaluating these effects can be useful for devising conservation strategies for coastal marine environments. Local populations of the intertidal goby Chaenogobius annularis, which are distributed on scattered rocky beaches of the Japanese Archipelago, show demographic independence without overlapping generations, making this an ideal species with which to study the effects of tsunami disturbance on genetic diversity. Some of these populations were affected by the tsunami of the 2011 off the Pacific coast of Tohoku Earthquake. Here, we investigated the change in genetic diversity of a local population of this species, which was located close to the epicenter of the earthquake, across the cohorts before and after the tsunami and evaluated the impact of the tsunami disturbance. Genetic diversity was maintained after the tsunami, and no change in the effective population size was observed. Our results suggest that the tsunami disturbance has had no marked impact on the genetic diversity of C.�annularis.

Original languageEnglish
Pages (from-to)1161-1167
Number of pages7
JournalMarine Ecology
Issue number5
Publication statusPublished - 2016 Oct 1


  • Chaenogobius annularis
  • Tohoku earthquake
  • effective population size
  • genetic diversity
  • tsunami disturbance

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology


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