Research Institute of Environment, Agriculture and Fisheries, Osaka Prefecture

Long-term changes in water quality in the Seto Inland Sea, Japan: 53-year observations (1973–2025)

Abstract We analyzed 53 years (1973–2025) of water quality observations collected through the Fisheries Monitoring Program in the Seto Inland Sea (SIS), one of the longest-standing coastal monitoring efforts in Japan. Using climatological anomalies and non-parametric statistical...

Intraspecific diversity of fan-tailed brook lamprey (Lethenteron satoi) with its ecological and distributional notes

Abstract Lethenteron satoi is a species of brook lamprey recently described from a single river in the Ishikari River system, Hokkaido, Japan. To date, the species had been known only from the six specimens used in the original description, and its basic biological information re...