Genetic isolation of an amphidromous goby species, Luciogobius ryukyuensis, highlights limited gene flow in small island populations.

ABSTRACT: Amphidromous fish could be transported to other habitats during the marine pelagic larval phase by ocean currents, but extent and mechanism of the larval dispersal is poorly known. Since island stream habitats are generally small and fragile, it is very important to understand the connectivity between streams and between islands from the perspective of biodiversity conservation. In the present study, we investigated the genetic connectivity among populations of an amphidromous goby species, Luciogobius ryukyuensis, on four islands (Okinawa, Kume, Ishigaki, and Iriomote) of the Ryukyu Archipelago, Japan. The genome-wide SNPs analyses revealed that the populations of L. ryukyuensis from the four islands are genetically distinguishable. This suggested that larval transport of this species bet

SUBMITTER: Maeda K 

PROVIDER: S-EPMC12234649 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature