RRC ID 81763
Author Ayşe Haruka Oshima Açıkbaş, Haruhi Narisoko, Roger Huerlimann, Koki Nishitsuji, Noriyuki Satoh, James Davis Reimer, Timothy Ravasi
Title Fish and coral assemblages of a highly isolated oceanic island: The first eDNA survey of the Ogasawara Islands
Journal Environmental DNA
Abstract The Ogasawara Islands are a highly isolated oceanic archipelago in the Pacific Ocean that possess unique faunal and floral biodiversity with a high level of endemism. As historically more focus has been put on the terrestrial realm in examining diversification and evolutionary processes on oceanic islands, publicly accessible and spatially resolved data of marine reef ecosystems remain scarce. To address this issue, we conducted the first environmental DNA (eDNA) metabarcoding surveys of the actinopterygian (ray‐finned) and elasmobranch fishes and of Scleractinia coral assemblages in the waters of the Ogasawara Islands. We detected a total of 124 unique taxa of fish and 38 unique taxa of scleractinian corals. Overall, our eDNA results confirmed that the Ogasawara Islands host a rich variety of coral and fish fauna and underline the strength of eDNA surveys in rapidly obtaining targeted multi‐taxa data using seawater samples, requiring comparatively little effort and a lack of requirement for in situ taxonomic expertise. We anticipate that continued biomonitoring using eDNA with high sampling effort will add to and complement the body of knowledge regarding species distributions, invasive species, and biodiversity hotspots within oceanic archipelagos.
Volume 6
Published 2024-2-20
DOI 10.1002/edn3.509
Resource
GBIF Image Database of Fishes in the Kanagawa Prefectural Museum of Natural History Fish collection of the Kagoshima University Museum Fish Specimens of Graduate School of Bioresources Mie University Fish collection of National Museum of Nature and Science